Podcasts about optical tweezers

Do you prefer multistory episodes, single story episodes, or a mix? Let us know! In this episode of Discover Daily, host Sienna dives into a big development in laser technology from China. Scientists at Hunan Normal University have created the world's most powerful "sound laser," a device that emits focused beams of sound particles (phonons) instead of light. This phonon laser boasts unprecedented power, durability, and unique properties that could revolutionize fields such as medical imaging, deep-sea exploration, and security scanning.Sienna explores the operational mechanism of this innovative sound laser, which combines optical and mechanical principles to achieve its remarkable performance. By trapping and amplifying sound waves within a reflective cavity using a levitated silica microbead, the device produces a laser-like beam of phonons that is ten times more powerful than previous phonon lasers and can operate continuously for over an hour.The potential applications of this breakthrough are vast, ranging from more precise and less invasive medical diagnostic techniques to enhanced underwater communication and navigation systems. Sienna also discusses the significance of this development coming from China, highlighting the country's growing prowess in advanced scientific research and the importance of international collaboration in driving technological progress forward.Perplexity is the fastest and most powerful way to search the web. Perplexity crawls the web and curates the most relevant and up-to-date sources (from academic papers to Reddit threads) to create the perfect response to any question or topic you're interested in. Take the world's knowledge with you anywhere. Available on iOS and Android Join our growing Discord community for the latest updates and exclusive content. Follow us on: Instagram Threads X (Twitter) YouTube Linkedin

Piere Rodriguez-Aliaga, PhD, is a young investigator whose current HD research is funded by the Hereditary Disease Foundation. He is using a new Nobel Prize-winning technology called Optical Tweezers to study one huntingtin molecule at a time, which allows access to structural information about pathogenic and non-pathogenic huntingtin variants with unprecedented detail. Please visit the Hereditary Disease Foundation website for more information.

In the latest episode of Hypot-enthuse, Malcolm and Maymana speak with Dr Lia Li, Research Fellow in the Department of Physics and Astronomy and CEO of Zero Point Motion ltd about her varied career so far - including work with lazers, optical sensors, science communication and entrepreneurship, and why you're never going to get a real lightsaber. Find out more on her website at https://www.yingliali.com/ or on twitter at @optolia. Hypot-enthuse is a podcast from the Faculty of Mathematical & Physical Sciences at UCL. Each episode features a lighthearted chat with a notable academic, and will examine exciting science topics making news around the world.

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.09.06.285353v1?rss=1 Authors: Li, X., Song, X., Li, Y., Li, M., Wang, H. Abstract: Optical tweezers is a powerful tool in the study of membrane tension. Comparing to pulling out an entire membrane tether at one time, the step-like method is more efficient because multiple relaxation curves can be obtained from one membrane tether. However, there is few proper models that describe relaxation curves to characterize mechanical properties of cell membrane. Here we established a model to describe the relaxation curve of HeLa cells based on the relationship between membrane tether diameter and tensions. We obtained effective viscosities and static tensions by fitting relaxation curves to our model. We noticed the delicate structure of relaxation curves contains information of cell skeleton changes and protein diffusion. Our study paved a novel pathway to characterize the dynamics and mechanics of cell membrane. Copy rights belong to original authors. Visit the link for more info

Over the last few years, optical tweezers have been capturing the attention of the quantum world. Recent experiments pushed the ball forward by extending this trapping technique alkaline-earth atoms (atoms with two, rather than one, valence electrons). We talk to Alexandre Cooper about those state-of-the-art results. A. Cooper et al, Alkaline-Earth Atoms in Optical Tweezers, PRX 8, 041055 (2018) (paper, preprint) J. P. Covey et al, 2000-Times Repeated Imaging of Strontium Atoms in Clock-Magic Tweezer Arrays, PRL 122, 173201 (2019) (paper, preprint)

08.04.2019 Optical Tweezers Shedding Light On Life’s Molecules, One At A Time Recent advances have led to the new field of single molecule biophysics. Single-molecule techniques record characteristics that are otherwise obscured by traditional approaches, revealing the behavior of individual biomolecules. Prominent among the new techniques is ‘optical tweezers,’ which uses radiation pressure from a laser to manipulate tiny objects, noninvasively, under the microscope. Dr. Arthur Ashkin (Bell Labs) received the 2018 Nobel Prize in Physics for the invention of optical tweezers, and for its biological applications. This talk highlights some of those biological applications, illustrating the power of this technology to help scientists understand the key molecules of life. Speakers Steven M. Block, The Stanford W. Ascherman, M.D., Professor and Professor of Applied Physics and of Biology, Stanford University

Why don't you get thrown backwards when you switch on your torch? Kerstin Gpfrich made her way to the Nanophotonics Centre in Cambridge to find out from Dr. Anna Lombardi. The answer to Matt's question may blow you away... Like this podcast? Please help us by supporting the Naked Scientists

The Physics Department celebrated the International Year of Light with its luminescence festival. Here is one of the talks, from Niels Kjaergaard who works in the Centre for Quantum Science. Niels talks about manipulating groups of atoms, dividing them, the patterns they make etc.

The Physics Department celebrated the International Year of Light with its luminescence festival. Here is one of the talks, from Eyal Schwartz. Eyal talks about discovering other planets and just how hard that can be; the techniques and tools scientists use to track down exo-planets.

Ons DNA verandert voortdurend doordat genen beschadigen door omgevingsfactoren als chemische verontreiniging en zonlicht. Elk van deze veranderingen kan de vorming van kanker veroorzaken. Het is dus belangrijk om te begrijpen hoe ons lichaam omgaat met gevaarlijke genetische veranderingen. Candelli ontwikkelde met zijn collega’s een nieuwe technologie om DNA-herstelprocessen beter en efficiënter te bestuderen. Met deze technologie toont Andrea Candelli voor het eerst hoe een eiwit dat een belangrijke genetische oorzaak is voor borstkanker is betrokken bij het herstel van DNA. Dit eiwit reguleert namelijk belangrijke stappen in het reparatiemechanisme van DNA. Promotor: prof.dr.ir. G.J.L. Wuite, prof.dr.ir. E.J.G. Peterman Faculteit: Faculteit der Exacte Wetenschappen. Datum: 30-05-2013

Ons DNA verandert voortdurend doordat genen beschadigen door omgevingsfactoren als chemische verontreiniging en zonlicht. Elk van deze veranderingen kan de vorming van kanker veroorzaken. Het is dus belangrijk om te begrijpen hoe ons lichaam omgaat met gevaarlijke genetische veranderingen. Candelli ontwikkelde met zijn collega's een nieuwe technologie om DNA-herstelprocessen beter en efficiënter te bestuderen. Met deze technologie toont Andrea Candelli voor het eerst hoe een eiwit dat een belangrijke genetische oorzaak is voor borstkanker is betrokken bij het herstel van DNA. Dit eiwit reguleert namelijk belangrijke stappen in het reparatiemechanisme van DNA. Promotor: prof.dr.ir. G.J.L. Wuite, prof.dr.ir. E.J.G. Peterman Faculteit: Faculteit der Exacte Wetenschappen. Datum: 30-05-2013

Hosts: Ed Brown, Dr. Shayne Joseph, Penny Dumsday, Lucas Randall. Topics covered: Research linking HRT to cancer contains many faults, rising carbon dioxide levels are affecting fish brains, multicellular life evolves in a laboratory. Scientists create the world's smallest ear, experts divided about adding leap seconds, the Tasmanian Tiger is definitely extinct.

Enhanced Audio PodcastAired date: 11/15/2006 3:00:00 PM Eastern Time

Enhanced Video PodcastAired date: 11/15/2006 3:00:00 PM Eastern Time