Podcasts about nanowires

Part 2 of this intriguing discussion continues with Michael Barnard and Vincent Pluvinage discussing battery technologies and their future.They navigate the competitive landscape, comparing Vincent's unique approach to other industry players and emphasizing the role of safety and cost reduction in advancing battery tech. Key aspects of supply chain localization and scaling up production for affordability and efficiency are also explored.Battery Tech Comparisons: The segment kicks off with a comparison of OneD Battery Sciences' technology to major industry announcements. Vincent shares his insights on the potential impact on EVs and the importance of practical applicability.Safety and Cost: Safety, a critical element in battery production, is the next point of discussion. The duo talks about the need for cost-effective and safe batteries for OEMs like GM, considering the financial implications of recalls.Manufacturing and Scaling: The conversation concludes on the note of manufacturing process innovation and scaling production. Vincent highlights how leveraging existing technologies and adjacent supply chains can lead to significant advancements in EV battery production.

In this engaging episode, host Michael Barnard welcomes Vincent Pluvinage, the physicist, inventor, and CEO of OneD Battery Sciences, discussing his diverse background, love for physics, and the path that led him to become involved in silicon-based batteries.From his initial work in designing chips for programmable hearing aids to meeting influential figures like Andy Grove and David Packard, Vincent shares his unique journey.The conversation delves into the development and potential of OneD Battery Sciences' groundbreaking battery technology, specifically the use of silicon nanowires, which promises to revolutionize the industry with the potential for low-cost manufacturing at scale.The discussion also touches on color perception, the complexity of electrochemistry, and the challenges of modeling larger batteries.Additional topics include the distinct characteristics and challenges of EV batteries compared to smaller consumer batteries, trade secrets in the battery industry, the importance of managing heat in EV batteries, and the complexities of different critical minerals in battery supply chains.

Join us for an insightful conversation with Dan Shapiro, a PhD candidate at Duke University's Chilkoti Lab and a Yale iGEM alumnus, as we explore the fascinating world of cellular biology research. Discover how Dan's work on protein nanowires and temporal compartmentalization in cells is paving the way for new discoveries and innovations in biomaterials and drug delivery. Plus, hear about his journey from undergraduate research to publishing a paper for Nature!

Dr. Ariyana Love joins me to discuss the fact that governments around the world are committing DEMOCIDE by pushing, and in many cases mandating the bioweapon shots on their citizens; A transhumanist bioweapon masquerading as a vax which contains GMO parasites, nanowires and dangerous toxic metals. Ariyana's site: https://ambassadorlove.wordpress.com/ WATCH this episode HERE: https://www.bitchute.com/video/lzAxx4LK9GRJ/

In today's podcast, we are presenting Guido Pickert, Head of IR of Aixtron SE. Guido provides a quick update on the Q2-2022 Financial Results Highlights Q2/22 Income Statement Balance Sheet Cash-Flow Statement Key Developments in End-Markets Guidance FY22 ---------------------------- ▶️ Visit us: https://seat11a.com/ ---------------------------- Company Profile: AIXTRON SE is a leading provider of deposition equipment to the semiconductor industry. The Company was founded in 1983 and is headquartered in Herzogenrath (near Aachen), Germany, with subsidiaries and sales offices in Asia, United States and in Europe. AIXTRON´s technology solutions are used by a diverse range of customers worldwide to build advanced components for electronic and opto-electronic applications based on compound or organic semiconductor materials. Such components are used in a broad range of innovative applications, technologies and industries. These include Laser and LED applications, display technologies, data transmission, SiC and GaN power management and conversion, communication, signaling and lighting as well as a range of other leading-edge applications. AIXTRON supplies its customers with both material deposition systems for high volume manufacturing and small-scale systems for Research & Development (“R&D”) or pilot production. Demand for AIXTRON's products is driven by further increasing processing speed, increased requirements for energy efficiency and the necessity to reduce the cost of ownership for current and emerging power- and optoelectronic components. The ability of AIXTRON's products to deposit thin material films precisely, enables manufacturers to improve performance, yield and quality in the fabrication process of advanced power- and optoelectronic devices. AIXTRON's product range includes customer-specific systems capable of depositing material films on a diverse range of different substrate sizes and materials. The deposition technologies for opto and power electronics include Metal-Organic Chemical Vapor Deposition (MOCVD) for the deposition of compound materials to produce for instance Lasers, LEDs, GaN and SiC power electronics or other optoelectronic components. PECVD is being employed for the deposition of complex Carbon Nanostructures (Carbon Nanotubes, Nanowires or Graphene). For organic electronics applications including Organic Light Emitting Diodes (OLEDs), APEVA offers the thin film deposition technologies Polymer Vapor Phase Deposition (PVPD) and Organic Vapor Phase Deposition (OVPD). For further information on AIXTRON (FSE: AIXA, ISIN DE000A0WMPJ6) please visit our website at: www.aixtron.com Other videos: Elevator Pitches: https://seat11a.com/media-type/elevator-pitch/ Company Presentations: https://seat11a.com/media-type/presentation/ Financial Results: https://seat11a.com/media-type/financials/ The Big Conversations: https://seat11a.com/media-type/conversation/ ESG Topics: https://seat11a.com/media-type/esg/ Product Highlights: https://seat11a.com/media-type/products/ Disclaimer: This publication is just for informational purposes only! it is not considered to give any investment advice! You agree to www.seat11a.com/legal/ and www.seat11a.com/imprint/

In this episode of the “Stories from the NNI” podcast, Michael Filler, Associate Professor and the Traylor Faculty Fellow in the School of Chemical and Biomolecular Engineering at Georgia Tech, describes how his team is growing nanowires to create functional devices for on-demand nanoelectronics. 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/z_pOTJ6xGhc CREDITS Special thanks to:  Michael FillerGeorgia Tech 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.

Friday, June 17th, The Stew Peters Show brings you a jaw dropping episode to kick off your weekend! James Otto joins to discuss what his and Dr. Brian Artis' findings are on the deep state's next new bioweapon is, and how it is linked to Shellfish venom! Dr. Aryiana Love joins to back up Dr. Jane Ruby's findings on tissue scaffolding technology and microspheres used on vaccinated people. Mike Lindell has been CANCELED by Walmart. He joins to discuss his next steps, and how we fight the Globalist agenda on free speech! TR Sartor joins to discuss what Virginia parents might face if the school board passes a mixed-gender curriculum. Watch this new show NOW at StewPeters.com! Watch this new show NOW at StewPeters.com! Get Dr. Zelenko's Anti-Shedding Treatment, NOW AVAILABLE FOR KIDS: http://zStackProtocol.com Go Ad-Free, Get Exclusive Content, Become a Premium user: https://redvoicemedia.com/premium Follow Stew on Gab: https://gab.com/RealStewPeters See all of Stew's content at https://StewPeters.TV Watch full episodes here: https://redvoicemedia.net/stew-full-shows Check out Stew's store: http://StewPeters.shop Support our efforts to keep truth alive: https://www.redvoicemedia.com/support-red-voice-media/ Don't forget to also check out The Stew Peters Show's NEW sponsor at DominanceOnDemand.com for help on increasing your mental & physical strength to battle the deep-state's KRYPTONITE plot on Americans! Prepare for the future! Go to Heavensharvest.com and stock up on essentials that last!

In this episode of the “Stories from the NNI” podcast, Lisa Friedersdorf, Director of the National Nanotechnology Coordination Office, speaks with Beth Stadler, Professor and Associate Head of Electrical and Computer Engineering at the University of Minnesota, about her work using magnetic nanowires to label cells, with potential applications in cancer treatment. 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/fiuAikVsumY CREDITS Special thanks to:  Beth StadlerUniversity of Minnesota 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.

Thanks for coming out and thanks to Squirrel Hill Sports Bar for hosting. The beats are all original made from ~2015 to early 2022. If you didn't make it, thank the magic of the internet for this recording. Enjoy!! Show was March 26, 2022, and was called New Kids on the Block. Organized and thrown by Slayd Productions & GLO Productions, as well as Konverge Entertainment on visuals. Tracks: 0:00 Kashmerik - ID (Mobb Deep - Survival of the Fittest acapella) 3:00 Kashmerik - Wildin' [Wump Collective] {2022 Remastered Version} 6:00 Kashmerik - ID (2Pac - Changes acapella) {Mastered by Nanowires} 9:00 Kashmerik - ID [Forthcoming on Vibrate Awake] {Mastered by Comisar} (Pop, Lock and Drop It acapella) 11:45 Kashmerik - In Strew Mental [Batik Records] 13:15 T.I. - What You Know (Kashmerik Flip VIP) 16:00 Kashmerik - Neon Nights {2022 Remastered Version} (Frank White - Ride Out acapella) 18:00 Kashmerik - War Dub 20:00 Kashmerik - Prophedelic 21:30 MIMS - This Is Why I'm Hot (Kashmerik Flip) 24:45 Mos Def - Beef (Kashmerik Flip) 26:30 Kashmerik - Smoke Sesh (Lloyd Banks, Eminem & 50 Cent - You Don't Know acapella) 29:00 Kashmerik - ID 31:15 Kashmerik - Dirt Devil 33:33 Kashmerik - ID (Notorious B.I.G. - Think Big acapella) 36:00 Kashmerik - ID 38:15 Marvin Gaye - I Heard It Through the Grapevine (Kashmerik Flip) 41:15 Kashmerik - ID (Fetty Wap - Trap Queen acapella and Three 6 Mafia feat Chamillionaire - Doe Boy Fresh acapella) 44:15 Kashmerik - ID 46:00 Kashmerik - ID 48:30 Kashmerik - ID (Three 6 Mafia feat Chamillionaire - Doe Boy Fresh acapella) 52:00 Kashmerik - ID (Nas - The World Is Yours acapella) 54:00 Kashmerik - Sad Space Panda (50 Cent ft. Olivia - Candy Shop acapella) 56:45 Kashmerik - Spacezilla [Batik Records] 58:00 Kashmerik - Soul Splatter (2Pac - Troublesome acapella) 1:00:00 Kashmerik - ID

In today's video, we are presenting Guido Pickert, Head of IR of Aixtron SE. Guido provides a quick update on the FY-2021 Financial Results FY21-Highlights Income Statement Balance Sheet Cash-Flow Statement Guidance 2022 24-Months Development Revenue Analysis EU-Taxonomy & ESG ---------------------------- ▶️ Visit us: https://seat11a.com/ ---------------------------- Company Profile: AIXTRON SE is a leading provider of deposition equipment to the semiconductor industry. The Company was founded in 1983 and is headquartered in Herzogenrath (near Aachen), Germany, with subsidiaries and sales offices in Asia, United States and in Europe. AIXTRON´s technology solutions are used by a diverse range of customers worldwide to build advanced components for electronic and opto-electronic applications based on compound or organic semiconductor materials. Such components are used in a broad range of innovative applications, technologies and industries. These include Laser and LED applications, display technologies, data transmission, SiC and GaN power management and conversion, communication, signaling and lighting as well as a range of other leading-edge applications. AIXTRON supplies its customers with both material deposition systems for high volume manufacturing and small-scale systems for Research & Development (“R&D”) or pilot production. Demand for AIXTRON's products is driven by further increasing processing speed, increased requirements for energy efficiency and the necessity to reduce the cost of ownership for current and emerging power- and optoelectronic components. The ability of AIXTRON's products to deposit thin material films precisely, enables manufacturers to improve performance, yield and quality in the fabrication process of advanced power- and optoelectronic devices. AIXTRON's product range includes customer-specific systems capable of depositing material films on a diverse range of different substrate sizes and materials. The deposition technologies for opto and power electronics include Metal-Organic Chemical Vapor Deposition (MOCVD) for the deposition of compound materials to produce for instance Lasers, LEDs, GaN and SiC power electronics or other optoelectronic components. PECVD is being employed for the deposition of complex Carbon Nanostructures (Carbon Nanotubes, Nanowires or Graphene). ---------------------------- ▶️ Visit us: https://seat11a.com/ ---------------------------- ▶️ Other videos: Elevator Pitches: https://seat11a.com/media-type/elevator-pitch/ Company Presentations: https://seat11a.com/media-type/presentation/ Financial Results: https://seat11a.com/media-type/financials/ The Big Conversations: https://seat11a.com/media-type/conversation/ ESG Topics: https://seat11a.com/media-type/esg/ Product Highlights: https://seat11a.com/media-type/products/ ----------------------------- ▶️ About seat11a: Seat11a is the next-generation roadshow for listed companies. We democratize financial intelligence by offering listed companies an investor video platform to address their message to Institutional and Professional Investors anywhere, anytime. ----------------------------- ▶️ For business inquiries: info@seat11a.com ----------------------------- Disclaimer: This publication is just for informational purposes only! it is not considered to give any investment advice! You agree to www.seat11a.com/legal/ and www.seat11a.com/imprint/

Composed by Casimir Galiszewski Mixed By Casimir Galiszewski Mastered by Casimir Galiszewski, Sam Simpson at Batik Records, Devin Kroes, Nanowires, and Chris Comisar. @batik-records @devinkroesmusic @nanowiresofficial @comisar Tracks: Kashmerik-ID Kashmerik-ID (Mastered by Devin Kroes) Kashmerik-ID Kashmerik-Wildin' {WUMP Collective} (2022 Remastered Version) Kashmerik-ID (Mastered by Nanowires) Kashmerik-In Strew Mental {Batik Records} Kashmerik-ID {Forthcoming on Subciety} (Mastered By Comisar) Kashmerik-ID Kashmerik-Perceptive (2022 Remastered Version) Kashmerik-ID (Mastered by Devin Kroes) Kashmerik-ID Kashmerik-ID Kashmerik-ID Mos Def-Beef(Kashmerik Flip) (2022 Remastered Version) Kashmerik-Miss You (2022 Remastered Version) Kashmerik-ID (Mastered by Devin Kroes) Kashmerik-Sad Space Panda (2022 Remastered Version) Kashmerik-ID Kashmerik-Spacezilla {Batik Records} Kashmerik-ID Marvin Gaye-I Heard It Through The Grapevine (Kashmerik Flip) (2022 Remastered Version) Kashmerik-ID {Forthcoming on VibrateAwake} T.I.-What You Know (Kashmerik Flip VIP) (2022 Remastered Version) Kashmerik-Soul Splatter (2022 Remastered Version) Kashmerik-ID Mixed 2022 - 02 - 19 Thanks for listening

Episode 508: Merry Christmas! Sorry for the bad audio. Brett is in NH and about to visit Boston. Andrew likes living in horse country. The "science" of weighted blankets. VR mini-golf and ping-pong. Q-amom. What does "based" even mean? Andrew ruins his back. Puke rants about taxes, Andrew rants about Puke's rant. Fearful people are the most dangerous. Twice stolen burritos in Columbus.

0:00 Harvard scientist 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 ▶️ Join Our Social Network: https://brighteon.social/@HealthRanger ▶️ Check In Stock Products at: https://PrepWithMike.com

0:00 Harvard scientist 27:38 Vaccines 36:28 Israel 41:22 Bombshell Stories 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 ▶️ Join Our Social Network: https://brighteon.social/@HealthRanger ▶️ Check In Stock Products at: https://PrepWithMike.com

Welcome to seat11a, in today's podcast we are presenting Guido Pickert, IR of AIXTRON SE. Guido will present the financial results of Q3-2021 Watch the podcast here: https://seat11a.com/title/aixtron-pickert-financialsq32021/ Company Profile AIXTRON SE is a leading provider of deposition equipment to the semiconductor industry. The Company was founded in 1983 and is headquartered in Herzogenrath (near Aachen), Germany, with subsidiaries and sales offices in Asia, United States and in Europe. AIXTRON´s technology solutions are used by a diverse range of customers worldwide to build advanced components for electronic and opto-electronic applications based on compound or organic semiconductor materials. Such components are used in a broad range of innovative applications, technologies and industries. These include Laser and LED applications, display technologies, data transmission, SiC and GaN power management and conversion, communication, signaling and lighting as well as a range of other leading-edge applications. AIXTRON supplies its customers with both material deposition systems for high volume manufacturing and small-scale systems for Research & Development (“R&D”) or pilot production. Demand for AIXTRON's products is driven by further increasing processing speed, increased requirements for energy efficiency and the necessity to reduce the cost of ownership for current and emerging power- and optoelectronic components. The ability of AIXTRON's products to deposit thin material films precisely, enables manufacturers to improve performance, yield and quality in the fabrication process of advanced power- and optoelectronic devices. AIXTRON's product range includes customer-specific systems capable of depositing material films on a diverse range of different substrate sizes and materials. The deposition technologies for opto and power electronics include Metal-Organic Chemical Vapor Deposition (MOCVD) for the deposition of compound materials to produce for instance Lasers, LEDs, GaN and SiC power electronics or other optoelectronic components. PECVD is being employed for the deposition of complex Carbon Nanostructures (Carbon Nanotubes, Nanowires or Graphene). For organic electronics applications including Organic Light Emitting Diodes (OLEDs), APEVA offers the thin film deposition technologies Polymer Vapor Phase Deposition (PVPD) and Organic Vapor Phase Deposition (OVPD). For further information on AIXTRON (FSE: AIXA, ISIN DE000A0WMPJ6) please visit our website at: www.aixtron.com ✅ T&C: this publication is just for informational purposes only – it is not considered to give any investment advice! You agree to www.seat11a.com/legal/ and www.seat11a.com/imprint/

Learn about a bacterial electric grid; traits females have evolved to avoid harassment; and why tea leaves sink.  There's a bacterial electric grid beneath our feet by Grant Currin  Hidden bacterial hairs power nature's “electric grid.” (2021, September). EurekAlert! https://www.eurekalert.org/news-releases/927031  Gu, Y., Srikanth, V., Salazar-Morales, A. I., Jain, R., O'Brien, J. P., Yi, S. M., Soni, R. K., Samatey, F. A., Yalcin, S. E., & Malvankar, N. S. (2021). Structure of Geobacter pili reveals secretory rather than nanowire behaviour. Nature, 597(7876), 430–434. https://doi.org/10.1038/s41586-021-03857-w  Specktor, B. (2020, September 18). Scientists find “secret molecule” that allows bacteria to exhale electricity. Livescience.com; Live Science. https://www.livescience.com/electron-breathing-geobacter-microbes.html  ‌Basic Biology of Oral Microbes. (2015). Atlas of Oral Microbiology, 1–14. https://doi.org/10.1016/b978-0-12-802234-4.00001-x  Many females have evolved traits to avoid harassment by Cameron Duke Berlin, S. (2021, August 30). Female Octopuses Throw Debris at Unwanted Mates Who Pester Them, Study Shows. Newsweek; Newsweek. https://www.newsweek.com/female-octopuses-throw-debris-unwanted-mates-who-pester-them-study-shows-1624345 Feldblum, Joseph T., Wroblewski, Emily E., Rudicell, Rebecca S., Hahn, Beatrice H., Paiva, T., Cetinkaya-Rundel, M., Pusey, Anne E., & Gilby, Ian C. (2014). Sexually Coercive Male Chimpanzees Sire More Offspring. Current Biology, 24(23), 2855–2860. https://doi.org/10.1016/j.cub.2014.10.039 Female hummingbirds avoid harassment by looking as flashy as males. (2021). Female hummingbirds avoid harassment by looking as flashy as males. Phys.org. https://phys.org/news/2021-08-female-hummingbirds-flashy-males.html  Godfrey-Smith, P., Scheel, D., Chancellor, S., Linquist, S., & Lawrence, M. (2021). In the Line of Fire: Debris Throwing by Wild Octopuses. https://doi.org/10.1101/2021.08.18.456805  Hosken, D. J., Alonzo, S., & Wedell, N. (2016). Why aren't signals of female quality more common? Exeter.ac.uk. https://doi.org/http://hdl.handle.net/10871/19606 Male-like ornamentation in female hummingbirds results from social harassment rather than sexual selection. (2021). Current Biology. https://doi.org/10.1016/j.cub.2021.07.043 Power Play. (2018). National Wildlife Federation. https://www.nwf.org/Magazines/National-Wildlife/2018/Oct-Nov/Animals/Animal-Aggression Wielgus, R. B., & Bunnell, F. L. (1994). Sexual Segregation and Female Grizzly Bear Avoidance of Males. The Journal of Wildlife Management, 58(3), 405. https://doi.org/10.2307/3809310 Why do tea leaves sink? by Ashley Hamer originally aired June 10, 2018 https://omny.fm/shows/curiosity-daily/the-cutest-kind-of-puppy-rural-happiness-and-the-s  James Norwood Pratt. (2010, August 16). The Ancient and Best Way to Brew Loose-Leaf Tea. The Atlantic. https://www.theatlantic.com/health/archive/2010/08/the-ancient-and-best-way-to-brew-loose-leaf-tea/61479/  Inglis-Arkell, E. (2014, May 6). Why Do Your Tea Leaves Move To The Middle Of The Cup? Gizmodo. https://gizmodo.com/why-do-your-tea-leaves-move-to-the-middle-of-the-cup-1572125743  Ouellette, J. (2016). The Strange Physics of Tea Leaves Floating Upstream. Nautilus. https://nautil.us/blog/the-strange-physics-of-tea-leaves-floating-upstream  Follow Curiosity Daily on your favorite podcast app to learn something new every day withCody Gough andAshley Hamer. Still curious? Get exclusive science shows, nature documentaries, and more real-life entertainment on discovery+! Go to https://discoveryplus.com/curiosity to start your 7-day free trial. discovery+ is currently only available for US subscribers. See omnystudio.com/listener for privacy information.

TWiM explores the use of a bacterial protein to make highly conductive microbial nanowires, and how modulin proteins seed the formation of amyloid, a key component of S. aureus biofilms. Subscribe to TWiM (free) on Apple Podcasts, Google Podcasts, Android, RSS, or by email. Become a patron of TWiM. Links for this episode Amyloid formation for S. aureus biofilms (eLife) Highly conductive microbial nanowires (Nat Chem Biol) Uncovering Nature’s electronics (Nature) Activating Nature’s electrical grid (Bioeng) Bacteria that exhale electricity (SyFyWire) Microbial transistors (TWiM 14) TWiM Listener survey Send your microbiology questions and comments (email or recorded audio) to twim@microbe.tv  

IFE Distinguished Visitor Lecture, recorded 24 May 2018 at QUT

Gemma Reguera discusses her studies of Geobacter pili, which transfers electrons to iron oxide and other minerals, and can be used for new biotech applications. Host: Julie Wolf  Subscribe (free) on Apple Podcasts, Google Podcasts, Android, RSS, or by email. Also available on the ASM Podcast Network app. Julie’s Biggest Takeaways: Geobacter sulferreducans, a bacterium that “breathes” rust, is the lab representative of the genus Geobacter that dump electrons onto rust. These specialized microbes use minerals like manganese oxide and iron oxide (also known as rust) for respiration in both terrestrial and aquatic sediments. Although many species are strict anaerobes, a few species can grow under microaerophilic conditions, in which the bacteria will respire the oxygen to eliminate its toxic effects on the cell. Iron oxide respiration relies on the Geobacter pili, a simple structure composed of a single peptide repeat. The pili concentrate on one side of the bacterial cell, where they connect the cell with the iron oxide to release the electrons that have been accumulating. The pili immediately depolymerize and retract, shedding the mineral before returning into the cell. Mass-producing pilin subunits in E. coli took a bit of trouble shooting, but now Reguera and her colleagues can make them on a much larger scale, which bodes well for expanding tests into electronic applications. Commercialization grants address the “valley of death,” the chasm between the technologies developed at the bench and the scale of production necessary for industrialization. Geobacter can bind and reduce many minerals using their pili, including uranium and other toxic heavy metals like lead and cobalt. Using Geobacter pili in agricultural soils or aquaculture waters may help remove these contaminants and improve the health of these ecosystems. Featured Quotes: “I remember when I started as a microbiology student, I think I underappreciated the role that electrons and the movement of electrons play in microbiology.” “There is absolutely not a single process in living organisms that is not energized by the movement of electrons.” “The Earth didn’t have oxygen for the first 2 billion years, if not longer - and there was life! On Earth! Those early organisms were really great at finding minerals, metals, just about anything other than oxygen to dump their electrons, continue to grow, and to colonize the Earth.” “When you start comparing the structure and the amino acid composition of this subunit to any other known bacterial pilins, you really see 2 remarkable changes: one of them is the pilin of Geobacter is very small. the second is that little stick has aromatic amino acids. When the sticks come together to make the filament, they cluster very close to each other and create like a staircase for the electrons to move fast. It’s like a magic combination in which you have the right structural reduction and the right amino acids to really fit like a puzzle to create paths for electrons.” “What has always motivated me is learning something new.” Links for This Episode: Gemma Reguera lab website Gemma Reguera interview on “People Behind the Science” HOM: Thirty-Second Annual Meeting of the Society of American Bacteriologists HOM: Barney Cohen: An Appreciation (Bacteriological Reviews memorial)

Host: Jeff Fox with special guests, Gemma Reguera and Geoffrey Gadd. Gemma Reguera of Michigan State University in East Lansing and Geoffrey Gadd of the University of Dundee in Scotland talk with Jeff Fox about their efforts, to probe some of the electrical properties of materials produced naturally by specific microorganisms. Thus, Geobacter bacteria make protein filaments, called pili, that act as nanowires, transporting 1 billion electrons per second, according to Reguera and her collaborators. Analytic evidence suggests that the electrons move along these proteins by a thermally activated, multistep hopping mechanism, enabling these bacteria to draw electrons from the extracellular milieu. Meanwhile, the fungus Neurospora crassa can transform manganese into a mineral composite with favorable electrochemical properties. The fungal cells produce filaments that take up manganese, which after heat treatment forms structures that have electrochemical properties that are suitable for use in supercapacitors or lithium-ion batteries. The carbonized fungal biomass-mineral composite has excellent cycling stability and retains more than 90% capacity after 200 cycles, according to Gadd and his collaborators. This story was featured in the June 2016 issue of Microbe Magazine. Subscribe to MMP (free) on iTunes, Stitcher, Android, RSS, or by email. You can also listen on your mobile device with the Microbeworld app. Send your microbiology questions and comments (email or audio file) to jfox@asmusa.org Tweet me your questions about this episode or just say hi!

Llamas treat diarrhea, and jetpacks take off in New Zealand, by Ian Woolf. Chard Core interviews David Faber of Deep Space Industries about mining in space, Laingchen Zhu presents his 3 Minute Thesis on Nanowires. Produced and presented by Ian Woolf

Lund, R (Bristol) Tuesday 21 May 2013, 14:10-14:30

Optical microscopy is widely used to visualize small structures that can not be seen by the unaided human eye. On the nanoscale, however, the diffraction limit prevents conventional microscopy from studying materials with the required spatial resolution. This work reports on tip-enhanced near-field optical microscopy (TENOM), a technique that allows for nanoscale optical imaging with high detection sensitivity. It exploits the locally enhanced optical fields at a laser illuminated metal tip that acts as an optical antenna. The main aims of this work are to develop a better understanding of the signal enhancement mechanisms in TENOM and to apply the technique to different 1D semiconducting nanostructures, namely single-walled carbon nanotubes (SWCNTs) and cadmium selenide nanowires (CdSe NWs). In the first part, the angular distribution of photoluminescence (PL) emission from SWCNTs with and without the optical antenna is studied by imaging the back focal plane of the microscope objective. Using model calculations, it is shown that the PL of SWCNTs on a dielectric substrate can be described as emission from a single in-plane point dipole despite the quasi 1D structure of the nanotubes. The signal enhancement due to the antenna is connected to a substantial redistribution of the angular emission. A procedure for the individual quantification of the excitation and radiation rate enhancement factors is developed and applied to the experimental data. In the second part, nanoscale optical imaging of CdSe NWs using TENOM is presented for the first time. Spectrally resolved imaging reveals different band gaps for different NWs and variations of the PL energy and intensity along single NWs with energy gradients up to 1 meV/nm. Even bundled NWs can be spatially resolved by their PL and Raman signals. The third part reports on the angular and spectral emission properties of CdSe NWs and the tip-induced changes in a TENOM measurement. In contrast to SWCNTs, two perpendicularly oriented point dipoles are required to describe the angular intensity distribution of PL emission from CdSe NWs sufficiently. Again, tip-induced signal enhancement is accompanied by a spatial redistribution of the emission. The theoretical description is more complex than in the case of SWCNTs, because different radiating dipole orientations in the NW have to be taken into account that can interact with the tip. Finally, investigations of the tip-sample distance dependence of PL and Raman scattering are presented and discussed.

Nanowires growing in real time. Each nanowire is roughly 400 atoms wide.

Solution-based self-assembly of quasi-one-dimensional semiconductor nanostructures (nanowires) from quasi-zero-dimensional (quantum dots) colloidal nanocrystal building blocks has proven itself as a powerful and flexible preparation technique. Polycrystalline CdTe nanowires self-assembled from light-emitting thiol-capped CdTe nanocrystals are the focus of this Feature Article. These nanowires represent an interesting model system for quantum dot solids, where electronic coupling between the individual nanocrystals can be optically accessed and controlled. We provide a literature-based summary of the formation mechanism and the morphology-related aspects of self-assembled CdTe nanowires, and highlight several fundamental and application-related optical properties of these nanostructures. These include fundamental aspects of polarization anisotropies in photoluminescence excitation and emission, the electronic coupling between individual semiconductor nanocrystals constituting the nanowires, and more applied, waveguiding properties of CdTe nanowire bundles and anti-Stokes photoluminescence in a prototypical structure of co-axial nanowires. The optical properties of self-assembled CdTe nanowires considered here render them potential candidates for photonic nanoscale devices.

On episode #14 of the podcast This Week in Microbiology, Stanley, Margaret, Michael and Elio review how the fungus Cryptococcus escapes from macrophages, and electrical conductivity in nanowires formed by the bacterium Geobacter.

Martin Hohmann-Marriott speaks at the the 2010 Otago Energy Research Centre Symposium. Held November 24, 2010.

This presentation discusses the consequences of Alloy Disorder in unstrained strained AlGaAs nanowiresRelationship between dispersion relationship and transmission in perfectly ordered wiresBand folding in Si nanowiresTranmisison in disordered wires – relationship to an approximate bandstructreReminder of the origin of bandstructure and bandstructure engineeringLocalization of wavefunctionsLearning Objectives:Alloy wires are NOT smooth“Conduction band edge” flucatuates locallyDispersion changes Transmission and Density of states show localization effects

This presentation discusses the consequences of Alloy Disorder in unstrained strained AlGaAs nanowiresRelationship between dispersion relationship and transmission in perfectly ordered wiresBand folding in Si nanowiresTranmisison in disordered wires – relationship to an approximate bandstructreReminder of the origin of bandstructure and bandstructure engineeringLocalization of wavefunctionsLearning Objectives:Alloy wires are NOT smooth“Conduction band edge” flucatuates locallyDispersion changes Transmission and Density of states show localization effects

Space probe Galileo by Lachlan WhatmoreQuantum cryptography by Amy BullenNews by Ian Woolf, - Superconductors, - Nanowires - Counting FishPresented by Amy BullenProduced by Lachlan Whatmore

What is a quantum dot? What is a nanowire? What is a nanotube? Why are these interesting and what are their potential applications? How are they made? This presentation is intended to begin to answer these questions while introducing some fundamental concepts such as wave-particle duality, quantum confinement, the electronic structure of solids, and the relationship between size and properties in nanomaterials.