Navigation Links
New research could mean faster computers and better mobile phones
Date:5/14/2012

Graphene and carbon nanotubes could improve the electronics used in computers and mobile phones, reveals new research from the University of Gothenburg, Sweden.

Carbon nanotubes and graphene are both made up of carbon and have unique properties. Graphene comprises an atom-thick layer of carbon atoms, while carbon nanotubes can be likened to a graphene sheet that has been rolled up to form a tube.

"If you stretch a graphene sheet from end to end the thin layer can oscillate at a basic frequency of getting on for a billion times a second," says researcher Anders Nordenfelt. "This is the same frequency range used by radios, mobile phones and computers."

Possible to weigh DNA molecules

It is hoped that the limited size and weight of these new carbon materials could further reduce both the size and power consumption of our electronic circuits.

In addition to new applications in electronics, research is under way into how graphene can be used to weigh extremely small objects such as DNA molecules.

Self-oscillating nanowires

The high mechanical resonance frequencies mean that carbon nanotubes and graphene can pick up radio signals.

"The question is whether they can also be used to produce this type of signal in a controlled and effective way," says Anders Nordenfelt. "This assumes that they themselves are not driven by an oscillating signal that, in turn, needs to be produced by something else."

In his research Anders Nordenfelt carried out a mathematical analysis to demonstrate that it is possible to connect the nanowire with a fairly simple electronic circuit, and at the same time to apply a magnetic field and thus get the nanowire to self-oscillate mechanically.

"At the same time we're converting a direct current to an alternating current with the same frequency as the mechanical oscillation," says Anders Nordenfelt.

Harmonics a way of reaching even higher frequencies

In addition to their own keynote, all mechanical strings have harmonics that, for example, give different musical instruments their own particular sound.

"An unexpected and very interesting result is that the method I've proposed can be used to get the nanowire to self-oscillate in one of its harmonics," says Anders Nordenfelt. "You can change the harmonic by altering the size of one or more of the electronic components."

In principle, there are an infinite number of harmonics with unlimited high frequencies, but there are practical limitations.

A long-held research dream is to produce signals in the terahertz range, with trillions of oscillations per second.

This area is particularly interesting as it lies on the boundary between microwaves and infrared radiation that, to date, has been the subject of relatively little research. It is an area that has been too fast for electronic circuits, but too slow for optical circuits.

"We can't get these really high frequencies with my method as things stand, but it could be something for the future," says Anders Nordenfelt.


'/>"/>

Contact: Anders Nordenfelt
anders.nordenfelt@physics.gu.se
46-072-311-6035
University of Gothenburg
Source:Eurekalert  

Related biology technology :

1. Functional Circulation LLC Receives Grand Challenges Explorations Grant for Groundbreaking Research in Global Health and Development
2. Syngenta and Devgen enter insect control research partnership
3. In metallic glasses, researchers find a few new atomic structures
4. Genomic Health and OncoMed Announce Strategic Alliance for Biomarker Research and Discovery Using Next Generation Sequencing
5. Barrow researchers unravel illusion
6. Research breakthrough takes supercomputing out of the lab
7. AMRI Launches SMARTSOURCING™ For Contract Manufacturing and Research Services
8. Roche Launches 454 Sequencing Assays for High Sensitivity Genetic Variant Detection in Leukemia Samples to Drive Blood Cancer Research Worldwide
9. Researchers Find Potential Link Between Drinking Alcohol And Breast Cancer
10. GenScript Rush Gene Synthesis - Driving Molecular Biology Research Faster
11. Phigenics Research Challenges Accuracy Of Conventional Legionella Testing Protocol
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New research could mean faster computers and better mobile phones
(Date:5/26/2016)... READING, England , May 26, ... ), a leading global provider of clinical, commercial ... healthcare organisations and TranScrip ( http://www.transcrip-partners.com ), a ... the product lifecycle, today announced the extension of ...      (Logo: http://photos.prnewswire.com/prnh/20141208/720248 ) ...
(Date:5/26/2016)... ... 26, 2016 , ... Kinder Scientific (KinderScientific.com), a leading animal ... the Company for the future. Kinder Scientific announces restructured ownership and additional ... appointed Chairman of the Board, Curtis D. Kinghorn has been appointed CEO/President and ...
(Date:5/25/2016)... ... May 25, 2016 , ... The ... fracture-specific plating options designed to address fractures of the distal tibia and fibula. ... The Acumed Ankle Plating System 3 is composed of seven plate families that ...
(Date:5/25/2016)... ... May 25, 2016 , ... WEDI, the nation’s leading authority on the use ... W. Stellar has been named by the WEDI Board of Directors as WEDI’s president ... executive leader with more than 35 years of experience in healthcare, association management and ...
Breaking Biology Technology:
(Date:3/15/2016)... 2016 Yissum Research Development Company of ... of the Hebrew University, announced today the formation of ... of various human biological indicators. Neteera Technologies has completed ... private investors. ... of electromagnetic emissions from sweat ducts, enables reliable and ...
(Date:3/14/2016)... HANOVER , Allemagne, March 14, 2016 /PRNewswire/ ... http://www.apimages.com ) - --> - ... ) - --> ... les solutions biométriques, fournit de nouveaux lecteurs d,empreintes ... lecteur LF10 de DERMALOG sera utilisé pour produire ...
(Date:3/11/2016)... --> --> ... Recognition Market by Technology (Pattern Recognition), by Component (Hardware, ... Type (On-Premises and Cloud), by Industry Vertical and by ... the global market is expected to grow from USD ... 2020, at a CAGR of 19.1%. , ...
Breaking Biology News(10 mins):