Podcasts about nanomechanics

Innovation technologique Liliane Bettencourt (2022-2023) - Lydéric BocquetCollège de FranceAnnée 2022-2023Colloque - La nanofluidique à la croisée des chemins : New Approaches in Nanofluidics: Carbon Nanotubes Mechanical ResonatorsI will present our work in the direction of combining mechanical resonator and nanofluidic channel with a carbon nanotube.First, I will discuss how mechanical resonators will allow to answer, experimentally, open questions in the nanofluidic community about the structure of water, the phase diagram and the mechanism behind the fast flow observed in carbon nanotube. Second, I will show that SU8 microfluidic allows to combine antagonist worlds of fluidics (ambient pressure) and mechanics (secondary vacuum). Such devices can sustain large water pressure up to 5 bars and do not degrade over time. Porosity of SU8 is equal or better to PDMS, the standard in fluidics. Moving to carbon nanotube nanomechanical resonators, I will show that they exhibit exquisite mass sensitivity down to 70 yg, even at room temperature. This feature is observed in several devices, making it a reliable asset. I will discuss the limitations to the sensitivity in terms of thermomechanical noise, frequency fluctuations, etc.Finally, I will demonstrate that electrons in carbon nanotubes can distinguish water adsorbed on the surface of the nanotube from water confined inside the nanotube.Again, this feature is reproducible in several devices and independent of the metallicity of the nanotube.Adrien NouryAdrien Noury received his PhD in Physics (Photonics and Material Sciences) in 2014 from Univ. Paris Sud, on carbon nanotubes hybrid photonics. He then joined the group of Adrian Bachtold in ICFO Barcelona to work on quantum electromechanics with graphene drums, and later Helium superfluids on nanotube mechanical resonator. Since 2017 he is CNRS researcher in L2C, Montpellier, where he started and led the Nanomechanics group. His research focuses on harnessing the exceptional sensitivity of nanotube mechanical resonators in order to adress challenging questions in Physics.

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.09.17.302380v1?rss=1 Authors: Kiss, B., Kis, Z., Palyi, B., Kellermayer, M. Abstract: SARS-CoV-2, the virus responsible for the current COVID-19 pandemic, displays a corona-shaped layer of spikes which play fundamental role in the infection process. Recent structural data suggest that the spikes possess orientational freedom and the ribonucleoproteins segregate into basketlike structures. How these structural features regulate the dynamic and mechanical behavior of the native virion, however, remain unknown. By imaging and mechanically manipulating individual, native SARS-CoV-2 virions with atomic force microscopy, here we show that their surface displays a dynamic brush owing to the flexibility and rapid motion of the spikes. The virions are highly compliant and able to recover from drastic mechanical perturbations. Their global structure is remarkably temperature resistant, but the virion surface becomes progressively denuded of spikes upon thermal exposure. Thus, both the infectivity and thermal sensitivity of SARS-CoV-2 rely on the dynamics and the mechanics of the virus. Copy rights belong to original authors. Visit the link for more info

The Sunday Project 15th 7th 12Tommy Boy's Greatest Beat Mix / DJ 3DTriple Threat / Z3 Mc'sJohnny the Fox / Tricky TUltimate III Dub / Ultimate IIITerminator / Kid FrostSon Of Beat Street / Jazzy JCrystal Fuzion  / DebonaireB Boy Breakdown / Dextrous Numerics Apocalypse / DiamondBack Kid feat. LeeroyDigital Baroque / KalsonSuperCruse / Dr SiakDoloami / SebastiAnAmundsen Journey / WeltwirtschaftDextrous Numerics / Nanomechanics EP Promo Spot ( Divine Disorder )NanomechanicsSolar FlareAndroid Awakening Thanks to All the Crew At Divine Disorder Records Loneliness / TomcraftWe Want Your SoulSnake Blood / LeftfieldEnergy Tech / LektroiDInvasion Of Mars / DBSThe Planet / WCWCScam / Debonaire Vs J DoubleBlue Monday / New OrderE=MC2 / BADDownload Here

Schuette, C (Free University of Berlin) Wednesday 28 March 2007, 09:00-09:45