Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Revisiting quantum effects in MEMS: New calculations shows that the influence of quantum effects on the operating conditions of nanodevices has, until now, been overestimated

Abstract:
Micro- and nano-electromechanical devices, referred to as MEMS and NEMS, are ubiquitous. These nanoscale machines with movable parts are used, for example, to trigger cars' airbags following a shock. They can also be found in smartphones, allowing them to detect how to adequately display the screen for the viewer. The trouble is that, as their size decreases, forces typically experienced at the quantum level start to matter in these nanodevices. Mexican physicists have studied the mechanical and electrical stability of MEMS and NEMS, depending on the plate thickness and the nature of the material used. The results have now been published in EPJ B by Raul Esquivel-Sirvent and Rafael Perez-Pascual from the National Autonomous University of Mexico, in Mexico City.

Revisiting quantum effects in MEMS: New calculations shows that the influence of quantum effects on the operating conditions of nanodevices has, until now, been overestimated

Heidelberg, Germany and New York, NY | Posted on November 15th, 2013

Forces of quantum origin become important at the scale of these devices shrinks; this is particularly true for the so-called Casimir force. This force leads to van der Waals interactions, which represent the sum of all intra-molecular interactions. These include attractions and repulsions between atoms, molecules, and surfaces, as well as other intermolecular forces, and are caused by correlations in the fluctuating polarisations of nearby particles.

To investigate the stability of nanodevices, Esquivel-Sirvent and his colleague used the classical calculation of the Casimir force, referred to as the Lifshitz formula, combined with the theory of stability of micro- and nanoscale machines.

In this study, the authors show that previous works overestimated the operating conditions of the devices by not taking into account this Casimir/van der Waals effect.

In addition, they demonstrate that the stability of these devices under the Casimir force changes depending on the nature and thickness of the metal coatings used. It also depends on the variation of concentration of the free charges in the silicon used, which changes with doping levels.

####

For more information, please click here

Contacts:
Franziska Hornig
tel. +49 6221 4878414

Copyright © Springer

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related Links

Reference:

Related News Press

News and information

Electric-car battery materials could harm key soil bacteria February 11th, 2016

Creating a color printer that uses a colorless, non-toxic ink inspired by nature February 11th, 2016

SLAC X-ray laser turns crystal imperfections into better images of important biomolecules: New method could remove major obstacles to studying structures of complex biological machines February 11th, 2016

Nanoparticle reduces targeted cancer drug's toxicity February 11th, 2016

NEMS

Nano-photonics meets nano-mechanics: Controlling on-chip nano-optics by graphene nano-opto-mechanics January 22nd, 2016

Mechanical quanta see the light January 20th, 2016

Nanodevices at one-hundredth the cost: New techniques for building microelectromechanical systems show promise December 20th, 2015

Nano-mechanical study offers new assessment of silicon for next-gen batteries September 25th, 2015

MEMS

Vesper Collaborates with GLOBALFOUNDRIES to Deliver First Piezoelectric MEMS Microphones: Acoustic sensing company works with top foundry to support mass-market consumer products January 21st, 2016

MEMS & Sensors Industry Group Previews “Internet of MEMS & Sensors” at CES 2016 -- Global industry association invites CE OEMS/integrators to conference track on January 7 January 6th, 2016

SITRI and Accelink Announce Cooperative Agreement on Opto-Electronic Communication December 31st, 2015

Nanodevices at one-hundredth the cost: New techniques for building microelectromechanical systems show promise December 20th, 2015

Discoveries

Research reveals carbon films can give microchips energy storage capability: International team from Drexel University and Paul Sabatier University reveals versatility of carbon films February 11th, 2016

Canadian Scientists Develop Innovative Protein Test for Zika February 11th, 2016

Creating a color printer that uses a colorless, non-toxic ink inspired by nature February 11th, 2016

SLAC X-ray laser turns crystal imperfections into better images of important biomolecules: New method could remove major obstacles to studying structures of complex biological machines February 11th, 2016

Announcements

Research reveals carbon films can give microchips energy storage capability: International team from Drexel University and Paul Sabatier University reveals versatility of carbon films February 11th, 2016

Creating a color printer that uses a colorless, non-toxic ink inspired by nature February 11th, 2016

SLAC X-ray laser turns crystal imperfections into better images of important biomolecules: New method could remove major obstacles to studying structures of complex biological machines February 11th, 2016

Nanoparticle reduces targeted cancer drug's toxicity February 11th, 2016

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers

Canadian Scientists Develop Innovative Protein Test for Zika February 11th, 2016

Electric-car battery materials could harm key soil bacteria February 11th, 2016

Creating a color printer that uses a colorless, non-toxic ink inspired by nature February 11th, 2016

SLAC X-ray laser turns crystal imperfections into better images of important biomolecules: New method could remove major obstacles to studying structures of complex biological machines February 11th, 2016

Quantum nanoscience

Nanoscale cavity strongly links quantum particles: Single photons can quickly modify individual electrons embedded in a semiconductor chip and vice versa February 8th, 2016

The iron stepping stones to better wearable tech without semiconductors February 8th, 2016

Spin dynamics in an atomically thin semi-conductor February 1st, 2016

New record in nanoelectronics at ultralow temperatures January 28th, 2016

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







Car Brands
Buy website traffic