Podcasts about nanostructures

Tyndall National Institute, based at University College Cork, welcomes a cutting-edge quantum light source as part of QuanTour, a groundbreaking European science outreach project. This unique project, which is in anticipation of the UNESCO International Year of Quantum Science and Technology 2025, aims to inspire the public and shed light on the future of quantum communication. The QuanTour initiative will see the specially built quantum light source travel to 12 leading research laboratories across Europe, highlighting the groundbreaking research in quantum physics. Tyndall will serve as the Irish host, joining institutions from Germany, Austria, Italy, Switzerland, Spain, France, England, Scotland, the Netherlands, Denmark, Sweden, and Poland. Tyndall (and its QCEC Centre for Quantum Computer Engineering) is at the forefront of quantum research, working on cutting-edge projects in quantum communication, quantum computing, and quantum sensing. These new technologies have the potential to revolutionise fields such as data security, computing power, and precise measurement techniques. Tyndall's participation in this international project highlights its strong position in the global scientific community, supporting its reputation as a key player in quantum technologies. One way to address these challenges is to utilise semiconductor quantum dots to create individual particles of light, known as photons, together with other exotic states of light, such as entangled photons. The QuanTour project illustrates the critical role quantum communication will play in securing future global data networks. Today's fibre-optic communications, which connect cities and countries, rely on traditional data transmission methods. However, the future lies in quantum communication, which uses photons to transmit information securely based on the principles of quantum physics. The QuanTour project also underlines the relevance of exploiting single photonic technologies for achieving computational advantage with quantum computers over traditional computation with classical chips. A high-intensity source of identical photons is key to achieve that. Dr. Emanuele Pelucchi, Head of Epitaxy and Physics of Nanostructures at Tyndall, said: "I am proud of being part of this initiative, which also importantly and playfully symbolically marks 100 years of "quantum". Quantour highlights the relevance that quantum technologies bear to our future and 100 years of endeavours and successes. At Tyndall we are doing our part developing unique site-controlled photon sources which are relevantly contributing to the challenges quantum technologies present." QuanTour is a project of the German Physical Society (DPG), organised by Dr Doris Reiter (TU Dortmund University, and Dr Tobias Heindel (TU Berlin University).

Let's go nano with fascinating fast facts about nanoscience, a deep dive into nanoscale structures in living things, a question about nanotechnology, some history of quantum dots, and a nano activity for you to try yourself at home.   Presented by Jenny Lynch and Matilda Sercombe. Written and produced by Jenny Lynch. Music by Purple Planet Music. Sound effects by Pixabay.   https://www.creativescience.com.au   Episode content: 00:00 Introduction and fast facts 03:10 Nanostructures in living things 05:13 What are some examples of nanotechnology 07:12 History of quantum dots 08:58 Bubble colours activity You will need bubble mix, a small dish, and a round bubble wand.

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2023.02.09.527812v1?rss=1 Authors: Clavet-Fournier, V., Lee, C., Wegner, W., Brose, N., Rhee, J., Willig, K. I. Abstract: Synapses, specialized contact sites between neurons, are the fundamental elements of neuronal information transfer. Synaptic plasticity is related to changes in synaptic morphology and the number of neurotransmitter receptors, and thought to underlie learning and memory. However, it is not clear how these structural and functional changes are connected. We utilized time-lapse super-resolution STED microscopy to visualize structural changes of the synaptic nano-organization of the postsynaptic scaffolding protein PSD95, the presynaptic scaffolding protein Bassoon, and the GluA2 subunit of AMPA receptors by chemically induced long-term potentiation (cLTP) at the level of single synapses. We found that the nano-organization of all three proteins undergoes an increase in complexity and size after cLTP induction. The increase was largely synchronous, peaking at ~60 min after stimulation. Therefore, both the size and complexity of single pre- and post-synaptic nanostructures serve as substrates for adjusting and determining synaptic strength. Copy rights belong to original authors. Visit the link for more info Podcast created by Paper Player, LLC

Welcome to the next episode of the Personalized Medicine Podcast. In this episode, our host Aradhana sat down for a conversation with Dr Ali Aghebat Rafat, Scientist at Tilibit Nanosystems. Aradhana and Ali discussed DNA nanostructures, DNA self-assembly, barcoding, biochips and their potential applications in Personalized Medicine.Tune in to this episode to learn more about: ◦ Tilibit Nanosystems and their mission ◦ Application areas of DNA origami in diagnostics ◦ What is DNA Paint ◦ A day in a life of a start-up scientist ◦ Role of nucleic acid nanostructures in Personalized Medicine ◦ The outlook on the future of DNA origami technology

In this episode of the “Stories from the NNI” podcast, Sharon Glotzer, the Anthony C. Lembke Department Chair of Chemical Engineering at the University of Michigan, Ann Arbor, discusses her research on how to build crystal nanostructures from self-assembling nanoparticles and the role of entropy in ordering nanoparticles into these nanocrystal structures.   If you would like to learn more about nanotechnology, go to nano.gov or email us at info@nnco.nano.gov. Closed captioning is provided on our YouTube channel. For this episode, go to: https://youtu.be/VE1CICHdW1U CREDITS Special thanks to:  Sharon GlotzerUniversity of Michigan, Ann Arbor Produced by:Andrew Pomeroy Music:  Inspirational Outlook by Scott Holmes  https://freemusicarchive.org/music/Sc...https://creativecommons.org/licenses/... Any opinions, findings, conclusions, or recommendations expressed in this podcast are those of the guest and do not necessarily reflect the views of the National Nanotechnology Coordination Office or United States Government. Additionally, mention of trade names or commercial products does not constitute endorsement or recommendation by any of the aforementioned parties. Any mention of commercial products, processes, or services cannot be construed as an endorsement or recommendation.

In this episode of the Nano Entrepreneurship Network podcast, Vinayak Dravid, the Abraham Harris Professor of Materials Science and Engineering at Northwestern University and founder of a company called MFNS (Multi-Functional Nano-Structures for Environment, Energy, and Biomedicine), describes how his company is developing a cost-effective and deployable technology that uses multifunctional nanostructures to remove pollutants from the environment. If you would like to learn more about nanotechnology, go to nano.gov or email us at info@nnco.nano.gov. Closed captioning is provided on our YouTube channel. For this episode, go to: https://youtu.be/10fMqxUS4hE CREDITS Special thanks to:  Vinayak DravidNorthwestern University Music:  Teamwork by Scott Holmes  https://freemusicarchive.org/music/Sc...https://creativecommons.org/licenses/... Produced by:  Andrew Pomeroy   Any opinions, findings, conclusions, or recommendations expressed in this podcast are those of the guest and do not necessarily reflect the views of the National Nanotechnology Coordination Office or United States Government. Additionally, mention of trade names or commercial products does not constitute endorsement or recommendation by any of the aforementioned parties. Any mention of commercial products, processes, or services cannot be construed as an endorsement or recommendation.

In this episode of the “Nano Matters” podcast, Xia Hong, Associate Professor in the Department of Physics and Astronomy at the University of Nebraska-Lincoln, describes how she and her team are creating and studying complex oxide nanostructures and interfaces for advanced electronics. If you would like to learn more about nanotechnology, go to nano.gov or email us at info@nnco.nano.gov. Closed captioning is provided on our YouTube channel. For this episode, go to: https://youtu.be/GXWWSG3dTQg CREDITS Special thanks to:  Xia HongUniversity of Nebraska-Lincoln Produced by:Andrew Pomeroy Music:  Inspirational Outlook by Scott Holmes  https://freemusicarchive.org/music/Sc...https://creativecommons.org/licenses/... Any opinions, findings, conclusions, or recommendations expressed in this podcast are those of the guest and do not necessarily reflect the views of the National Nanotechnology Coordination Office or United States Government. Additionally, mention of trade names or commercial products does not constitute endorsement or recommendation by any of the aforementioned parties. Any mention of commercial products, processes, or services cannot be construed as an endorsement or recommendation.

In this episode of the “Stories from the NNI” podcast, Xia Hong, Associate Professor of Physics and Astronomy at the University of Nebraska-Lincoln, discusses her work investigating the properties of complex oxide nanostructures and interfaces. If you would like to learn more about nanotechnology, go to nano.gov or email us at info@nnco.nano.gov. Closed captioning is provided on our YouTube channel. For this episode, go to: https://youtu.be/T8TRjBxKnSw CREDITS Special thanks to:  Xia HongUniversity of Nebraska-Lincoln Produced by:Andrew Pomeroy Music:  Inspirational Outlook by Scott Holmes  https://freemusicarchive.org/music/Sc...https://creativecommons.org/licenses/... Any opinions, findings, conclusions, or recommendations expressed in this podcast are those of the guest and do not necessarily reflect the views of the National Nanotechnology Coordination Office or United States Government. Additionally, mention of trade names or commercial products does not constitute endorsement or recommendation by any of the aforementioned parties. Any mention of commercial products, processes, or services cannot be construed as an endorsement or recommendation.

うってぃ、部品、ブカの3人でやばい論文、仁科記念賞について話しました。以下の Show Notes は簡易版です。完全版はこちら。1:44 部品2:04 脳内超伝導Possible Superconductivity in the Brain (arXiv: 1812.05602)Ep. 13でも話してます22:50 ブラジル産グラファイト超伝導Identification of a possible superconducting transition above room temperature in natural graphite crystals※グラファイトは黒炭じゃなくて黒鉛です42:42 金銀ナノ粒子超伝導Evidence for Superconductivity at Ambient Temperature and Pressure in Nanostructures田中昭二 酸化物超伝導体の先駆的研究55:31 高圧室温超伝導をめぐる論争On the ac magnetic susceptibility of a room temperature superconductor: anatomy of a probable scientific fraud (arXiv: 2110.12854)Physica C に載った論文現在取り下げられていて読めないRoom-temperature superconductivity in a carbonaceous sulfur hydride | Nature昨年話題になった高圧での室温超伝導の論文。Ep. 13でも話していますh指数 - WikipediaBreakthrough or bust? Claim of room-temperature superconductivity draws fireCriticism of room temperature superconductor ‘temporarily removed' from journal収録後に出た上記の続報1:08:57 うってぃ1:09:30 373K 謎物質超伝導373 K Superconductors373k-superconductors.com1:18:44 電気抵抗実質ゼロ超高周波工学研究室該当の論文?プレスリリース｜関西大学本物の関大のプレスリリース。1:27:56 石油王の道楽論文(?)Ferroelectric properties of Sr doped hydroxyapatite bioceramics for biotechnological applicationsFerroelectric properties of Ce doped hydroxyapatite nanoceramicsJ. F. Scott, Ferroelectrics go bananas誘電体やる人は必読の論文！James F. Scott - Wikipedia1:43:41 ブカ1:43:47 Superconductors.orgSuperconductors.org1:54:00 バイポーラロン超伝導Polarons and Bipolarons in High-Tc Superconductors and Related Materials (Amazon)Sir N. F. Mott らによるテキストブックFrom SrTiO3 to Cuprates and Back to SrTiO3: A Way Along Alex Müller's Scientific CareerLight Bipolarons Stabilized by Peierls Electron-Phonon Coupling銅酸化物高温超伝導体の電子状態の定説が覆る ～一次元的な動きの重ね合わせをコンプトン散乱で初観測～（プレスリリース） — SPring-8 Web Site「銅酸化物超伝導は一次元の Peierls タイプ相互作用に基いた電子状態の bipolaron に由来」Buhin and Buka, Interaxion Podcast, (2021)2:08:43 仁科記念賞仁科記念賞 - 公益財団法人仁科記念財団『ハーバード流“NO”と言わせない交渉術』お知らせ出演して頂ける方、感想などお待ちしております。 #interaxion

Take a few seconds to leave us a review. It really helps! https://apple.co/2RIsbZ2 if you do it and send us proof, we'll give you a shoutout on the show.(0:49) - Nanostructured Shields: MIT, CalTech, and ETH Zurich researchers have developed a new lightweight material capable of providing more stopping power than kevlar on a per mass basis. Furthermore, they were able to use the Buckingham-pi theorem - an analytical method used to measure how much material a meteor can excavate from a planet - to create a framework for assessing the impact absorption effectiveness of new nanostructured materials. (10:55) - Balloon Detection of Venus Earthquakes: Much of what we know about the inner workings of planet earth comes from our analysis of seismic activity but it's not that easy to do the same on other planets with inhospitable surface conditions like Venus. So how can we work around this problem? According to NASA JPL and some students from CalTech, balloons are the answer! The team was able to prove that weather balloons with barometers (instruments that gauge pressure differences) could detect earthquakes miles away. (16:00) - Increasing OLED Efficiency: OLED screens are becoming the standard for phones, TVs, and monitors; however, about 80% of the light produced by these screens actually ends up trapped inside the devices leading to drastic decreases in overall efficiency. Researchers from University of Michigan have found a way to liberate ~20% of the trapped light by making some modifications to the electrodes on either side of the light emitters and using an index-matching fluid to prevent light getting trapped by the outer glass layer.

0:00 Intro 10:52 Insane Headlines 32:46 Collapse 43:13 Liberty 50:18 COVID-19 57:28 Cybernetics To read more about Self-assembled magnetic nanomaterials, visit: https://onlinelibrary.wiley.com/doi/10.1002/agt2.18 For more updates, visit: http://www.brighteon.com/channel/hrreport NaturalNews videos would not be possible without you, as always we remain passionately dedicated to our mission of educating people all over the world on the subject of natural healing remedies and personal liberty (food freedom, medical freedom, the freedom of speech, etc.). Together, we're helping create a better world, with more honest food labeling, reduced chemical contamination, the avoidance of toxic heavy metals and vastly increased scientific transparency. ▶️ Every dollar you spend at the Health Ranger Store goes toward helping us achieve important science and content goals for humanity: https://www.healthrangerstore.com/ ▶️ Sign Up For Our Newsletter: https://www.naturalnews.com/Readerregistration.html ▶️ Brighteon: https://www.brighteon.com/channels/hrreport ▶️ Download our app: https://www.naturalnews.com/App ▶️ Join Our Social Network: https://brighteon.social/@HealthRanger ▶️ Check In Stock Products at: https://PrepWithMike.com

Dr. Lexi Walls is a biochemist, not a prophet—though, admittedly, it can sometimes be hard to tell the difference.Six years ago, when Lexi started researching coronaviruses, they were an understudied and poorly understood class of viruses. When Lexi wrote about the “tremendous pandemic potential of coronaviruses” in December 2019, no one realized that the seeds of the COVID-19 pandemic had already been sown. When Lexi completed her doctoral dissertation that same month on the structure of coronavirus spike proteins, she couldn’t have imagined how large those spike proteins soon would loom in our public consciousness, and in our efforts to develop effective vaccines against COVID-19.In this episode, Lexi joins Jocelyn and Bradley to share the surreal experience of doing “basic” research that turned out to have swift, profound, and far-reaching applications. She explains how the use of cryo-electron microscopy enabled her to characterize the structure of coronavirus spike proteins in great detail, and why this is so important for understanding how these viruses infect cells, how our immune system recognizes and responds to them, and how the emergence of variants could affect the course of the pandemic. She also explains the differences between mRNA vaccines and vector vaccines, as well as how these compare to more traditional types of vaccines. Finally, Lexi shares exciting news about a COVID vaccine she and her colleagues have developed using synthetic protein nanocages (!), and the friends discuss the future of pan-virus vaccines that might make us better prepared for the next pandemic.Follow Lexi on Twitter @coronalexington, and learn more about her amazing work at the links below!https://www.grad.uw.edu/lexi-walls/https://scienceinseattle.com/2020/03/18/dr-lexi-walls-talks-coronaviruses-and-cryo-em/https://youtu.be/e1YEyPX-PqwThe Veesler Lab:https://faculty.washington.edu/dveesler/https://twitter.com/veeslerlabDesigned Protein Nanoparticle Vaccine:https://www.cell.com/cell/fulltext/S0092-8674(20)31450-1Further Reading:“Multitude of coronavirus variants found in the US — but the threat is unclear” (Ewen Callaway, Nature): https://www.nature.com/articles/d41586-021-00564-4“What Do Vaccine Efficacy Numbers Actually Mean?” (Carl Zimmer and Keith Collins, The New York Times): https://www.nytimes.com/interactive/2021/03/03/science/vaccine-efficacy-coronavirus.html“Here’s Why Johnson & Johnson’s Vaccine Only Requires One Dose” (Emily Mullin, Medium): https://coronavirus.medium.com/how-does-johnson-johnsons-vaccine-work-a17524d85edd“Variant-proof vaccines — invest now for the next pandemic” (Dennis R. Burton and Eric J. Topol, Nature): https://www.nature.com/articles/d41586-021-00340-4“Self-assembly: From Nanowaffles to Nanostructures!”: https://funsizephysics.com/from-nanowaffles-to-nanostructures/ “Forming Nanostructures: Froot Loops, Legos, and Self-assembly”: https://funsizephysics.com/froot-loops-legos-self-assembly/Related episodes:What’s so “basic” about basic research? (Discussion): https://podcasts.apple.com/us/podcast/12-discussion-whats-so-basic-about-basic-research/id1471423633?i=1000448570255Everyone Has Herpes (Lisa Poppe): https://podcasts.apple.com/us/podcast/8-lisa-poppe-everyone-has-herpes/id1471423633?i=1000446370166Pandemic: A Letter from the Past (Gregg Mitman): https://podcasts.apple.com/us/podcast/40-gregg-mitman-pandemic-a-letter-from-the-past/id1471423633?i=1000470227078Beyond Bat Soup (Dorothy Tovar): https://podcasts.apple.com/us/podcast/44-dorothy-tovar-beyond-bat-soup/id1471423633?i=1000473039535Hindsight --> Insight --> Foresight (Nidhi Gupta): https://podcasts.apple.com/us/podcast/74-nidhi-gupta-hindsight-insight-foresight/id1471423633?i=1000505283002Big Little Life (Hannah Gavin): https://podcasts.apple.com/us/podcast/78-hannah-gavin-big-little-life/id1471423633?i=1000510524624Go Small or Go Home! (Axel Enders): https://podcasts.apple.com/us/podcast/16-axel-enders-go-small-or-go-home/id1471423633?i=1000452081082

http://paleo.cc/paluxy/hammer2b.jpg https://www.historicmysteries.com/the-london-hammer/https://www.dailymail.co.uk/sciencetech/article-1096959/Mystery-century-old-Swiss-watch-discovered-ancient-tomb-sealed-400-years.htmlhttps://www.ancient-origins.net/unexplained-phenomena/ancient-nanostructures-found-ural-mountains-are-out-place-and-time-002046

Self-assembly is a ubiquitous process in the natural world that leads to the formation of the DNA double helix, the creation of cell membranes, and to many other structures.   Scientists and engineers have been working to design new molecules that assemble themselves in water for the purpose of making nanostructures for biomedical applications such as […]

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.09.14.289330v1?rss=1 Authors: Vinje, J., Guadagno, N. A., Progida, C., Sikorski, P. Abstract: Cells in their natural environment are embedded in a complex surrounding consisting of biochemical and biomechanical cues directing cell properties and cell behaviour. Nonetheless, in vitro cell studies are typically performed on flat surfaces, with clear differences from the more complex situation cells experience in vivo. To increase the physiological relevance of these studies, a number of advanced cellular substrates for in vitro studies have been applied. One of these approaches include flat surfaces decorated with vertically aligned nanostructures. In this work, we explore how U2OS cells are affected by arrays of polymer nanopillars fabricated on flat glass surfaces. We focus on describing changes to the organisation of the actin cytoskeleton and in the location, number and shape of focal adhesions. From our findings we identify that the cells can be categorised into different regimes based on their spreading and adhesion behaviour on nanopillars. A quantitative analysis suggests that cells seeded on dense nanopillar arrays are suspended on top of the pillars with focal adhesions forming closer to the cell periphery compared to flat surfaces or sparse pillar arrays. Copy rights belong to original authors. Visit the link for more info

No Expresso dessa semana, o Tiago Conti fala sobre um dos principais dispositivos que nos cercam e impactam a nossa vida, os SENSORES! Ouça sobre a construção básica dessa tecnologia, sua multidisciplinaridade e muito mais. Ficou com alguma dúvida? Gostaria de ouvir sobre um tema específico? Entre em contato conosco em: E-mail: contato@cafecomnano.com Twitter: twitter.com/cafecomnano Instagram: instagram.com/cafecomnano/ Facebook: facebook.com/cafecomnano/ Membros nesse programa: Pauta e narração do expresso: Tiago Conti – instagram.com/conti.tiago/ Comentários finais: William Leonel - twitter.com/wl_leonel Fontes utilizadas na construção desse programa: 1) Chemical Sensors - An Introduction for Scientists and Engineers; Peter Gründler, Springer, 2006. 2) Functional Thin Films and Nanostructures for Sensors - Synthesis, Physics, and Applications; Anis Zribi e Jeffrey Fortin, Springer 2009. --- This episode is sponsored by · Anchor: The easiest way to make a podcast. https://anchor.fm/app --- Send in a voice message: https://anchor.fm/cafecomnano/message Support this podcast: https://anchor.fm/cafecomnano/support

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.08.21.262139v1?rss=1 Authors: Li, R., Chen, H., Choi, J. H. Abstract: Architectured materials exhibit negative Poisson's ratios and possess enhanced mechanical properties compared with regular materials. Their auxetic behaviors emerge from periodic cellular structures rather than chemistry. The majority of such metamaterials are constructed by top-down approaches and macroscopic with unit cells of microns or larger. On the other extreme, there are molecular-scale auxetics including naturally-occurring crystals which are not designable. There is a gap from few nanometers to microns, which may be filled by bottom-up biomolecular self-assembly. Here we demonstrate two-dimensional (2D) auxetic nanostructures using DNA origami. Structural deformation experiments are performed by strand displacement and complemented by mechanical deformation studies using coarse-grained molecular dynamics (MD) simulations. We find that the auxetic properties of DNA nanostructures are mostly defined by geometrical designs, yet materials' chemistry also plays a role. From elasticity theory, we introduce a set of design principles for auxetic DNA materials which should be useful for diverse applications. Copy rights belong to original authors. Visit the link for more info

Professor Zhiyong Fan is a Professor in the Department of Electronic and Computer Engineering and head of the Functional and Advanced Nanostructures (FAN) Laboratory at the Hong Kong University of Science and Technology, and he joins the show to discuss the development of a new bionic eye that would enable robots and people with blindness to see. In this episode, you'll learn: What is anatomically different about cephalopod eyes that makes them superior even to human eyes Why it has been so challenging to design spherical or hemispherical light sensors How the bionic eye being developed could be self-powered, with no need for an external energy supply Why “superhuman” vision might not actually be something people want Fan's initial inspiration for his current work stemmed from something that's a source of inspiration for many: sci-fi films. In particular, he was amazed by the idea of creating a sophisticated artificial eye structure that could function like the human eye. He explains that all of the current technology utilizing light sensing materials are restricted by flat rather than spherical substrates…that is, until about 2016 when Fan had the idea to use a porous hemispherical template to host light sensing material to form an artificial retina. This template is filled with semi-conductive nanowires which form a 3D array in a way that allows them to stand vertically inside the template and point toward the center of the sphere. The result? A structure very similar to that of the human retina.  Fan goes on to explain the next step in the creation of this aptly named “bionic eye,” the details of the processes which have led to the current product, how a bionic eye of this sort would work, the potential ways in which this technology could be further developed, and the feasibility of developing a bionic eye that can be fully implanted into a human eye socket. Interested in learning more? Tune in and check out https://eezfan.home.ece.ust.hk/. Available on Apple Podcasts: apple.co/2Os0myK

Episode Description:Johns Hopkins Applied Physics Laboratory new building 201 will host cutting edge research paving the way to new technologies. CannonDesign solved complex engineering and architectural building design challenges to deliver this state of the art research facility. Tune in and see how these two organizations collaborated for a truly stunning and technologically advanced building critical to providing solutions to our nation’s most challenging research, engineering, and analytical problems. Building Description:260,000 gsf interdisciplinary research facility that will provide the Research and Exploratory Development Department (REDD) with flexible open laboratories, and core laboratories in a highly collaborative open workplace environment. REDD’s interdisciplinary programs include Multifunctional Materials and Nanostructures, Experimental and Computational Physics, Microelectronics and Microsystems, and Mechanical and Electrical Engineering. Core Labs include THZ and Quantum Mechanics Optics Labs, MBE and MTS Labs, a Dry Lab, an Imaging Suite, NMR’s, and a Metal Shop. Also included are Open Labs for Biological and Health Sciences programs with flanking support labs for Microbiology, Molecular Biology, Biochemistry, Analytical Instrumentation, and Sequencing Labs, as well as Virology, Tissue Culture, Environmental Chambers, Mass Specs, and Radioisotopes. The building has additional amenities including a large auditorium capable of hosting town hall type meetings and delivering presentations. The building is expected to be occupied early 2020. Project Highlights: 260,000 gross square feet IECC 2015, LEED Silver (Pending) -167,000 CFM total 100% OA lab supply; lab AHU’s have fan arrays for partial redundancy -200,000 CFM total building supply air; every AHU with energy recovery -180,000 CFM total (150,000 CFM + 30,000 CFM) N+1 high plume laboratory exhaust fan array - 225,000 CFM engineered smoke control system for the atrium. - 18,000 MBH high efficiency condensing HHW plant with N+1 boiler not included in total - 1,280 ton CHW plant with N+1 chiller not included in total - Laboratory equipment process cooling system.

The most preferable mode of drugs administration is via the oral route but physiological barriers such as pH, enzymatic degradation etc. limit the absolute use of this route. Herein lies the importance of nanotechnology having a wide range of applications in the field of nano-medicine, particularly in drug delivery systems. The exclusive properties particularly small size and high surface area (which can be modified as required), exhibited by these nanoparticlesrender these structures more suitable for the purpose of drug delivery. Various nanostructures, like liposomes, dendrimers, mesoporous silica nanoparticles, etc. have been designed for the said purpose. These nanostructures have several advantages over traditional administration of medicine. Apart from overcoming the pharmacokinetic and pharmacodynamics limitations of many potential therapeutic molecules, they may also be useful for advanced drug delivery purposes like targeted drug delivery, controlled release, enhanced permeability and retention (EPR) effect. In this review, we attempt to describe an up-to-date knowledge on various strategically devised nanostructures to overcome the problems related to oral drug administration. Ghosh S, Ghosh S, Sil PC. Role of nanostructures in improvising oral medicine. Toxicol Rep. 2019;6:358–368. Published 2019 Apr 15. doi:10.1016/j.toxrep.2019.04.004. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Sections of the Abstract, Introduction, Oral Administration and Nanostructures, and Conclusion are presented in the Podcast. Access the full-text article here: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6502743/

Interferometric lithography (IL) has been used for many years in semiconductor nanofabrication, but has been little used for molecular nanopatterning. We have found that in combination with self-assembled monolayers as resists, it provides a very simple and rapid means to fabricate nanostructured metals, oxides, polymers and biomolecules over areas as large as 1 sq. cm. An introduction to the methodology that we use in this video.

Nanophotonics is one great path into our future since it renders possible to build e.g. absorber, emitter or amplifier on a scale of a few dozen nanometers. To use this effectively we will have to understand firstly the resonances of plasmons and secondly the interaction of electromagnetic waves with complex media. Here on the one hand we can model light as waves and describe what is happening for the different frequencies of monochromatic light waves. We have to model the evolution in air or in more complex media. On the other hand - taking the more particle centered point of view - we can try to model the reaction of the photons to certain stimuli. The modelling is still in progress and explored in many different ways. The main focus of our guest Claire Scheid who is working on nanophotonics is to solve the corresponding partial differential equations numerically. It is challenging that the nanoscale-photons have to be visible in a discretization for a makro domain. So one needs special ideas to have a geometrical description for changing properties of the material. Even on the fastest available computers it is still the bottleneck to make these computations fast and precise enough. A special property which has to be reflected in the model is the delay in response of a photon to incoming light waves - also depending on the frequency of the light (which is connected to its velocity- also known as dispersion). So an equation for the the evolution of the electron polarization must be added to the standard model (which is the Maxwell system). One can say that the model for the permeability has to take into account the whole history of the process. Mathematically this is done through a convolution operator in the equation. There is also the possibility to explain the same phenomenon in the frequency space as well. In general the work in this field is possible only in good cooperation and interdisciplinary interaction with physicists - which also makes it especially interesting. Since 2009 Claire Scheid works at INRIA méditerranée in Sophia-Antipolis as part of the Nachos-Team and is teaching at the university of Nice as a member of the Laboratoire Dieudonné. She did her studies at the Ecole Normale Superieure in Lyon and later in Paris VI (Université Pierre et Marie Curie). For her PhD she changed to Grenoble and spent two years as Postdoc at the university in Oslo (Norway). Literature and additional material R. Léger, J. Viquerat, C. Durochat, C. Scheid and S. Lanteri: A parallel non-confoming multi-element DGTD method for the simulation of electromagnetic wave interaction with metallic nanoparticles, J. Comput. Appl. Math. Vol 270, p. 330-342, 2014. S. Descombes, C. Durochat, S. Lanteri, L. Moya, C. Scheid, J. Viquerat: Recent advances on a DGTD method for time-domain electromagnetism, Photonics and Nanostructures, Volume 11, issue 4, 291-302, 2013. K. Busch, M. König, J. Niegemann: Discontinuous Galerkin methods in nanophotonics, Laser and Photonics Reviews, 5, pp. 1–37, 2011.

Nanophotonics is one great path into our future since it renders possible to build e.g. absorber, emitter or amplifier on a scale of a few dozen nanometers. To use this effectively we will have to understand firstly the resonances of plasmons and secondly the interaction of electromagnetic waves with complex media. Here on the one hand we can model light as waves and describe what is happening for the different frequencies of monochromatic light waves. We have to model the evolution in air or in more complex media. On the other hand - taking the more particle centered point of view - we can try to model the reaction of the photons to certain stimuli. The modelling is still in progress and explored in many different ways. The main focus of our guest Claire Scheid who is working on nanophotonics is to solve the corresponding partial differential equations numerically. It is challenging that the nanoscale-photons have to be visible in a discretization for a makro domain. So one needs special ideas to have a geometrical description for changing properties of the material. Even on the fastest available computers it is still the bottleneck to make these computations fast and precise enough. A special property which has to be reflected in the model is the delay in response of a photon to incoming light waves - also depending on the frequency of the light (which is connected to its velocity- also known as dispersion). So an equation for the the evolution of the electron polarization must be added to the standard model (which is the Maxwell system). One can say that the model for the permeability has to take into account the whole history of the process. Mathematically this is done through a convolution operator in the equation. There is also the possibility to explain the same phenomenon in the frequency space as well. In general the work in this field is possible only in good cooperation and interdisciplinary interaction with physicists - which also makes it especially interesting. Since 2009 Claire Scheid works at INRIA méditerranée in Sophia-Antipolis as part of the Nachos-Team and is teaching at the university of Nice as a member of the Laboratoire Dieudonné. She did her studies at the Ecole Normale Superieure in Lyon and later in Paris VI (Université Pierre et Marie Curie). For her PhD she changed to Grenoble and spent two years as Postdoc at the university in Oslo (Norway). Literature and additional material R. Léger, J. Viquerat, C. Durochat, C. Scheid and S. Lanteri: A parallel non-confoming multi-element DGTD method for the simulation of electromagnetic wave interaction with metallic nanoparticles, J. Comput. Appl. Math. Vol 270, p. 330-342, 2014. S. Descombes, C. Durochat, S. Lanteri, L. Moya, C. Scheid, J. Viquerat: Recent advances on a DGTD method for time-domain electromagnetism, Photonics and Nanostructures, Volume 11, issue 4, 291-302, 2013. K. Busch, M. König, J. Niegemann: Discontinuous Galerkin methods in nanophotonics, Laser and Photonics Reviews, 5, pp. 1–37, 2011.

Hybrid solar cells based on nanoparticulate TiO2, dye and poly(3-hexylthiophene) are a common benchmark in the field of solid-state dye-sensitized solar cells. One-dimensionally nanostructured titanium dioxide is expected to enhance power-conversion efficiency (PCE) due to a high surface area combined with a direct path for electrons from the active interface to the back electrode. However, current devices do not meet those expectations and cannot surpass their mesoporous counterparts. This work approaches the problem by detailed investigation of diverse nanostructures on a nanoscale by advanced transmission electron microscopy (TEM). Anodized TiO2 nanotubes are analyzed concerning their crystallinity. An unexpectedly large grain size is found, and its implication is shown by corresponding solar cell characteristics which feature an above-average fill factor. Quasi-single crystalline rutile nanowires are grown hydrothermally, and a peculiar defect structure consisting of free internal surfaces is revealed. A growth model based on Coulombic repulsion and steric hindrance is developed to explain the resulting V-shaped defect cascade. The influence of the defects on solar cell performance is investigated and interpreted by a combination of TEM, electronic device characterization and photoluminescence spectroscopy, including lifetime measurements. A specific annealing treatment is proposed to counter the defects, suppressing several loss mechanisms and resulting in an improvement of PCEs by 35 %. Simultaneously, a process is developed to streamline electron-tomographic reconstruction of complex nanoparticles. Its suitability is demonstrated by the reconstruction of a gold nanostar and a number of iron-based particles distributed on few-layered graphene.

Wed, 28 May 2014 12:00:00 +0100 https://edoc.ub.uni-muenchen.de/17034/ https://edoc.ub.uni-muenchen.de/17034/1/Schreiber_Robert.pdf Schreiber, Robert ddc:530, ddc:500, Fakultät für Physik

Organic nanostructures are employed in various nonlinear optical applications including novel IR mode-locked fiber lasers, all-optical switching, and 3D updateable holographic display technology. This presentation will focus on our advances in this area including, 1. Sources: Using fiber taper based carbon nanotube saturable absorber, we have demonstrated an all-fiber thulium-doped wavelength mode-locked laser operating near 2 µm with over 50nm tuning range. 2. All-optical switching: Liquids such as CCl4, CS2, and organic solutions in liquid core optical fiber (LCOF) offer an effective platform to study nonlinear optical phenomena, e.g. Raman scattering, four-wave mixing and supercontinuum generation. In these devices the long interaction length is combined with a strong field confinement to enable extremely low power operation. Our observation of all-optical switching using inverse Raman scattering in LCOF with > 20dB contrast at a time scale < 5ps will be described. 3. 3D holographic display: The use of organics and nanostructures in holographic updateable 3D display will be summarized.

Stephen Euin Cobb (author and futurist) is today's speaker. Various Nanotechnology Topics: Nanotechnology in Furniture; Nano-particles are shown to kill the HIV virus using bee venom; assembling and dissembling nano-structures composed of DNA using a "programmable assembly" method has been demonstrated by nano-encrypting Morse code messages; gold nano-rods split water into hydrogen and oxygen when exposed to sunlight. Hosted by Stephen Euin Cobb, this is the April 3, 2013 episode of The Future And You. [Running time: 19 minutes]  Stephen Euin Cobb is an author, futurist, magazine writer and host of the award-winning podcast The Future And You. A contributing editor for Space and Time Magazine; he is also a regular contributor for Robot, H+, Grim Couture and Port Iris magazines; and he spent three years as a columnist and contributing editor for Jim Baen's Universe Magazine. He is an artist, essayist, game designer, transhumanist, and is on the Advisory Board of The Lifeboat Foundation. His novels include Bones Burnt Black, Plague at Redhook and Skinbrain.

Tue, 26 Mar 2013 12:00:00 +0100 https://edoc.ub.uni-muenchen.de/16811/ https://edoc.ub.uni-muenchen.de/16811/1/Mandlmeier_Benjamin.pdf Mandlmeier, Benjamin ddc:540, ddc:500, Fakultät für Chemie und Pharmazie

Wilson, M (Durham University) Friday 22 March 2013, 11:50-12:40

Dr. Wang's research interests are ultra-low energy magnetization switching, electron tunneling in ferromagnet/insulator/ferromagnet structures, spin-dependent transport in semiconductors nano-fabrication, and superconductivity. Presented February 8, 2012.

Solar cells generate clean electricity from sunlight. However, they remain significantly more expensive than other, less environmentally-friendly, energy generation technologies. Although the emergence of thin-film solar cells, low-cost alternatives to the prevailing crystalline silicon solar cells, has been a significant advance in photovoltaic technology, these devices typically suffer from low absorption. If this absorption could be enhanced, it would enable an increase in power conversion efficiency and hence a reduction in cost/kW of generating capacity. This is the motivation of the work presented in this doctoral thesis. Metallic nanostructures are used to trap light within the semiconductor film in organic solar cells. By increasing the optical path length, the probability that photons are absorbed before exiting the film is increased. A novel process is developed to fabricate nanostructured metallic electrode organic solar cells. These devices feature a nanovoid array interface between the metallic electrode and the semiconduc- tor film. Absorption enhancements over conventional, planar architectures as high as 45% are demonstrated. This light-trapping is found to be largely enabled by localized void plasmons. The experimental investigations are supported by finite element simulations of absorption in solar cells, which display very good agreement with experimental results. It is found that light trapped in organic solar cell architectures is very efficiently absorbed by the organic film - in- creases in the exciton generation rate per unit volume of semiconductor material of up to 17% are observed. The simulation routine is additionally used to compare and contrast common plasmonic architectures in organic solar cells. The role of the metallic nanostructure geometry on the dominant light-trapping mechanism is assessed for various size domains and optimum architectures are identified. When implemented according to the findings of this thesis, light- trapping will have the potential to vastly increase the efficiency and hence decrease the price of thin-film solar cells.

Molecules are always in motion, but how can we tell what is going on if we can't see them? Learn what the modeling of these motions can tell us about the structures and properties of nanoscale materials.

Mon, 11 Jul 2011 12:00:00 +0100 https://edoc.ub.uni-muenchen.de/14207/ https://edoc.ub.uni-muenchen.de/14207/1/Bornemann_Sven.pdf Bornemann, Sven ddc:540, ddc:500, F

Tue, 28 Jun 2011 12:00:00 +0100 https://edoc.ub.uni-muenchen.de/13205/ https://edoc.ub.uni-muenchen.de/13205/1/Szeifert_Johann.pdf Szeifert, Johann ddc:540, ddc:500, Fakultät für

Low-dimensional assemblies, where order and organization follow supramolecular principles, have assumed remarkable importance due to their outstanding physical and/or chemical properties. An easy method to produce tailored functional materials combines self-assembly and Langmuir-Blodgett assembly. In this talk Petra Rudolf illustrates how this new approach allows the deposition of graphene on a variety of substrates.

Four presenters of new medical technologies are today's featured guests. Benjamin Rhymer (a Registered Cardiovascular Invasive Specialist with the Cath Lab) describes how surgeries are performed inside the human heart without opening the chest using manipulation devices mounted on the end of long flexible catheters; he also discusses intravascular ultrasound cameras, and fluoroscopy. Laura Goldberg and Michelle Mekscer (of the Pathology Department at Aiken Regional Medical Centers Laboratory) describe how removed tissues are being examined microscopically in real time by specialists hundreds of miles away by sending live images from the microscope in the operating room to the specialist through the Internet. Doctor Chad Leverett (Associate Professor of Chemistry at USCA who is also a nanotechnology scientist working with the USC Nano Center in Columbia SC) describes his and the university's work in nanotechnology: including nanosensors, nanostructures and nanotechnology in medicine. He also explains the uses and technology of an infrared optical spectrometer which provides an instantaneous readout on a laptop computer of a sample's complete chemical and molecular composition. Hosted by Stephen Euin Cobb, this is the November 10, 2010 episode of The Future And You. [Running time: 32 minutes] These interviews were taped from the exhibition floor of the 2010  Business, Innovation and Technology Expo which was held on the campus of the University of South Carolina on July 17 2010.

This presentation discusses disorder in AlGaAs unstrained systems in bulk. Bandstructure of an ideal simple unit cellWhat happens when there is disorder?Concept of a supercellBand folding in a supercellBand extraction from the concept of approximate bandstructureComparison of alloy disorder with the virtual crystal approximationConfiguration noise, concentration noiseHow large does an alloy supercell have to be? When does the “bulk” condition occur?Learning Objectives:Bandedges and bandgaps are influenced by: Placement / configuration disorderConcentration noise Clustering System size is very important “bulk” starts at 100,000 atoms=> Nanostructures are not “bulk” => like quantum dots, nanowires, and quantum wells vary locally

This presentation discusses disorder in AlGaAs unstrained systems in bulk. Bandstructure of an ideal simple unit cellWhat happens when there is disorder?Concept of a supercellBand folding in a supercellBand extraction from the concept of approximate bandstructureComparison of alloy disorder with the virtual crystal approximationConfiguration noise, concentration noiseHow large does an alloy supercell have to be? When does the “bulk” condition occur?Learning Objectives:Bandedges and bandgaps are influenced by: Placement / configuration disorderConcentration noise Clustering System size is very important “bulk” starts at 100,000 atoms=> Nanostructures are not “bulk” => like quantum dots, nanowires, and quantum wells vary locally

Tue, 20 Jul 2010 12:00:00 +0100 https://edoc.ub.uni-muenchen.de/11819/ https://edoc.ub.uni-muenchen.de/11819/1/Lebold_Timo.pdf Lebold, Timo ddc:540, ddc:500, Fakultät für Chemie und Pharmazie

Subhash Mahajan from the Ira A. Fulton School of Engineering, Arizona State University, presents a lecture on "Self-Assembled Nanostructures in Mixed III-V and Group III Nitride Layers and Their Influence on Electronic and Optical Properties." His research covers two thematic areas: structure-property relationships in functional materials and deformation behavior of solids.

Dr. Datta is Thomas Duncan Distinguished Professor of Electrical and Computer Engineering at Purdue University. His research interests are: Physics of Nanostructures with emphasis on Electronic Transport including Spin Electronics, Molecular Conduction, Nanoscale Device Physics and Mesoscopic Superconductivity. Presented April 17, 2009.

There is much current excitement about the interesting advances in science and the unusual physical properties of carbon nanostructures, particularly carbon nanotubes and graphene, which are both of great interest at the present time.  A brief review will be given of the physical underpinnings of carbon nanostructures that were developed over the past 60 years, starting with the electronic structure and physical properties of graphene and graphite, and then moving to graphite intercalation compounds which contained the first carbon nanostructures to be studied experimentally.  Liquid carbon studies were precursors to the fullerene family of nanostructures and vapor grown carbon fibers were precursors to carbon nanotubes.  Particular emphasis is given to the recent developments in our understanding of the photophysics of carbon nanotubes and graphene, with perspectives on future research directions for these fields and applications that are emerging. Speaker:  Mildred Dresselhaus, MIT

There is much current excitement about the interesting advances in science and the unusual physical properties of carbon nanostructures, particularly carbon nanotubes and graphene, which are both of great interest at the present time.  A brief review will be given of the physical underpinnings of carbon nanostructures that were developed over the past 60 years, starting with the electronic structure and physical properties of graphene and graphite, and then moving to graphite intercalation compounds which contained the first carbon nanostructures to be studied experimentally.  Liquid carbon studies were precursors to the fullerene family of nanostructures and vapor grown carbon fibers were precursors to carbon nanotubes.  Particular emphasis is given to the recent developments in our understanding of the photophysics of carbon nanotubes and graphene, with perspectives on future research directions for these fields and applications that are emerging. Speaker:  Mildred Dresselhaus, MIT

This work focuses on the investigation of overgrowth phenomena in InAs/GaAs nanostructures using synchrotron radiation. Surface-sensitive grazing incidence small angle x-ray scattering (GISAXS) and grazing incidence diffraction (GID) are applied to study shape, strain, and interdiffusion in self-organised grown nanostructures. The technique of anomalous x-ray diffraction at the weak (200) superstructure reflection enhances the chemical sensitivity of the measurements. For the investigation of (partially) buried nanostructures finite-element simulations (FEM) have been performed. The following sample systems were investigated: ((1)) Free-standing and buried InGaAs quantum dots: Free-standing In(x)Ga(1-x)As islands grown on GaAs (001) by molecular beam epitaxy (MBE) with a nominal concentration of x=0.5 have been investigated. Contrast variation close to the K edge of As by anomalous GID at the (200) superstructure reflection is used for a direct determination of the InAs concentration as a function of the lateral strain in the quantum dots (QDs). The evaluation of intensity mappings recorded in reciprocal space close to the (200) reflection together with atomic force micrographs (AFM) allows to attribute the strain and the InAs concentration to a certain height in the quantum dots. Thereby, a three-dimensional model of the strain and interdiffusion profile of the InGaAs QDs can be reconstructed. A discussion of measurements taken on buried InGaAs QDs and free-standing islands grown on the strain modulated surface of a buried QD layer shows the limits of this technique. ((2)) InGaAs quantum rings: The formation of nanoscopic InGaAs ring structures on a GaAs (001) substrate takes place when InAs quantum dots, grown by Stranski-Krastanov self-organisation, are covered by a thin layer of GaAs. The shape transformation into rings is governed by strain, diffusion and surface tension, quantities which are of importance to understand magneto-optical and electronic applications of the rings. GISAXS and GID is applied to characterise morphology and structural properties such as strain and chemical composition of the rings in three dimensions. From GISAXS the shape is found to be of circular symmetry with an outer radius of 26nm, a height of 1.5nm, and a hole in the middle, in good agreement with AFM measurements. The most surprising results are obtained from intensity mappings in reciprocal space close to the (220) and (2-20) reflection done in surface sensitive GID geometry. From a comparison of the intensity maps with FEM model calculations the InGaAs interdiffusion profile in the ring is determined. It strongly depends on the crystallographic orientation. In the ring a maximum InAs concentration of more than 80% along [1-10] is found while along [110] it is below 20%. This is explained by the preferred diffusion of In along [1-10]. ((3)) Quantum wires formed by cleaved edge overgrowth: Quantum wires (QWRs) fabricated by the cleaved edge overgrowth (CEO) technique use tensile strain to confine the charge carriers to one dimension. The cleaved edge of a pseudomorphically strained In0.1Al0.9As/Al0.33Ga0.67As superlattice (SL) is overgrown by a GaAs layer of 10nm thickness. The lateral charge carrier localisation in the overgrown layer is induced by the periodic strain modulation of the SL. Using GID this strain state of the system is determined. The strain modulation due to the overgrown superlattice occurs only within 3micron of the total wafer thickness of 150micron. The GID technique allows for a clear separation of the strain modulation in the cap layer and the superlattice underneath. It can be proved that the strain modulation in the GaAs cap layer is not of compositional origin but purely elastic with an average lattice parameter change of (0.8+-0.1)% with respect to relaxed GaAs. The strain profile obtained is confirmed by FEM model calculations.

Tue, 24 Jul 2001 12:00:00 +0100 https://edoc.ub.uni-muenchen.de/2367/ https://edoc.ub.uni-muenchen.de/2367/1/Soennichsen_Carsten.pdf Sönnichsen, Carsten ddc:530, ddc:500, Fakultät für Physik