Nanotechnology Now

Our NanoNews Digest Sponsors


Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > New Research Optimizes Application of Carbon Nanotubes

Abstract:
Iranian researchers made more practical the usage of carbon nanotubes in intelligent nanostructures by carrying out new researches on them.

New Research Optimizes Application of Carbon Nanotubes

Iran | Posted on July 3rd, 2010

Studies have been made in recent few years on the transverse vibrations of carbon nanotubes which improve their performance considerably by using Euler-Bernoulli and Timoshenko beam models. However, none of the said models considered the geometric form of the cylindrical shell of carbon nanotubes.

The result of this research has various applications in producing nano-drills, nano-sensors, nano-resonators, and intelligent nano-structures.

"In this research, the effect of nano scale on the free vibrations has been studied by applying Euler-Bernoulli beam, Timoshenko beam, and Donnell cylindrical shell theories. Therefore, all models have been considered to simulate carbon nanotubes and to use mechanical theories in continuous environments," Dr Qorbanpour, one of the researchers at the Institute of Nanoscience and Nanotechnology of University of Kashan, told the Iran Nanotechnology Initiative Council.

"We first collected references and studied them to obtain equations of motion for Euler-Bernoulli beam model, Timoshenko beam models, and Donnell cylindrical shell model. Then we solved the equations by considering the effect of nano scale, Van der Waals forces between the inner and outer carbon nanotubes for double-walled carbon nanotubes in equations of motion, and buckling modes by applying the boundary conditions of the simple fulcrum as sine functions," he added, noting, "Next, we calculated the natural frequencies. In the end, we compared the theories of Euler-Bernoulli beam, Timoshenko beam, and Donnell cylindrical shell."

The research result shows that contrary to Euler-Bernoulli beam theory, Timoshenko beam theory has included the effects of the shear stress and rotary inertia momentum. Such effects are more important for carbon nanotubes with high wavenumber.

####

For more information, please click here

Copyright © FARS

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 News Press

News and information

Oxford Instruments and Dresden High Magnetic Field Laboratory collaborate to develop HTS magnet technology components for high field superconducting magnet systems June 29th, 2016

Texas A&M Chemist Says Trapped Electrons To Blame For Lack Of Battery Efficiency: Forget mousetraps — today’s scientists will get the cheese if they manage to build a better battery June 28th, 2016

Building a smart cardiac patch: 'Bionic' cardiac patch could one day monitor and respond to cardiac problems June 28th, 2016

New, better way to build circuits for world's first useful quantum computers June 28th, 2016

Academic/Education

JPK’s NanoWizard® AFM and ForceRobot® systems are being used in the field of medical diagnostics in the Supersensitive Molecular Layer Laboratory of POSTECH in Korea June 21st, 2016

Weizmann Institute of Science Presents: Weizmann Wonder Wander - 4G - is Online June 21st, 2016

NanoLabNL boosts quality of research facilities as Dutch Toekomstfonds invests firmly June 10th, 2016

The Institute for Transfusion Medicine at the University Hospital of Duisburg-Essen in Germany uses the ZetaView from Particle Metrix to quantify extracellular vesicles June 7th, 2016

Nanotubes/Buckyballs/Fullerenes

Nanotubes' 'stuffing' as is: A scientist from the Lomonosov Moscow State University studied the types of carbon nanotubes' 'stuffing' June 2nd, 2016

Programmable materials find strength in molecular repetition May 23rd, 2016

Nanotubes are beacons in cancer-imaging technique: Rice University researchers use spectral triangulation to pinpoint location of tumors May 21st, 2016

Unveiling the electron's motion in a carbon nanocoil: Development of a precise resistivity measurement system for quasi-one-dimensional nanomaterials using a focused ion beam May 16th, 2016

Sensors

Researchers discover new chemical sensing technique: Technique allows sharper detail -- and more information -- with near infrared light June 24th, 2016

Artificial synapse rivals biological ones in energy consumption June 21st, 2016

A new form of hybrid photodetectors with quantum dots and graphene June 19th, 2016

Drum beats from a one atom thick graphite membrane June 15th, 2016

Announcements

Oxford Instruments and Dresden High Magnetic Field Laboratory collaborate to develop HTS magnet technology components for high field superconducting magnet systems June 29th, 2016

Texas A&M Chemist Says Trapped Electrons To Blame For Lack Of Battery Efficiency: Forget mousetraps — today’s scientists will get the cheese if they manage to build a better battery June 28th, 2016

Building a smart cardiac patch: 'Bionic' cardiac patch could one day monitor and respond to cardiac problems June 28th, 2016

New, better way to build circuits for world's first useful quantum computers June 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