Navigation Links
Exotic behavior when mechanical devices reach the nanoscale
Date:5/15/2011

Most mechanical resonators damp (slow down) in a well-understood linear manner, but ground-breaking work by Prof. Adrian Bachtold and his research group at the Catalan Institute of Nanotechnology has shown that resonators formed from nanoscale graphene and carbon nanotubes exhibit nonlinear damping, opening up exciting possibilities for super-sensitive detectors of force or mass.

In an article to be published in Nature Nanotechnology (DOI - 10.1038/NNANO.2011.71), Prof. Bachtold and his co-researchers describe how they formed nano-scale resonators by suspending tiny graphene sheets or carbon nanotubes and clamping them at each end. These devices, similar to guitar strings, can be set to vibrate at very specific frequencies.

In all mechanical resonators studied to date, from large objects several metres in size down to tiny components just a few tens of nanometers in length, damping has always been observed to occur in a highly predictable, linear manner. However Prof. Bachtolds research demonstrates that this linear damping paradigm breaks down for resonators with critical dimensions on the atomic scale. Of particular importance they have shown that the damping is strongly nonlinear for resonators based on nanotubes and graphene, a characteristic that facilitates amplification of signals and dramatic improvements in sensitivity.

The finding has profound consequences. Damping is central to the physics of nanoelectromechanical resonators, lying at the core of quantum and sensing experiments. Therefore many predictions that have been made for nanoscale electro-mechanical devices now need to be revisited when considering nanotube and graphene resonators.

This new insight into the dynamics of nano-scale resonators will also enable dramatic improvements in the performance of numerous devices. Already the Prof. Bachtolds group has achieved a new record in quality factor for graphene resonators and ultra-weak force sensing with a nanotube resonator.

The work is particularly timely because an increasing number of research groups around the world with diverse backgrounds are choosing to study nanotube/graphene resonators, which have a number of uniquely useful properties.


'/>"/>

Contact: Ana de la Osa
ana.delaosa@cn.cat
34-935-814-963
Institut Catal de Nanotecnologia
Source:Eurekalert

Related biology technology :

1. New study confirms exotic electric properties of graphene
2. Netsmart Technologies CMHC/MIS Behavioral Health Software Passes ARRA Certification Tests
3. M-3 Information, a Leader in Expert Behavioral Health Solutions, Launches M3Clinician.com
4. Expanding drug development horizons: Receptor behaviors observed in living cell membranes
5. Expanding drug development horizons: Receptor behaviors observed in living cell membranes
6. BioBehavioral Diagnostics Company to Present at Biotech Showcase™ 2011
7. New Preclinical Data Confirm Naurexs Novel Antidepressant GLYX-13 Appears Free of the Behavioral Impairment and Abuse Potential Seen With Ketamine
8. Building a smaller, lighter future: Understanding polymer behaviors below 1 nanometer
9. Ph.D. study of behavior of semiconductor crystals of size less than 100 nanometers
10. ORNL scientists reveal battery behavior at the nanoscale
11. Charitable behavior found in bacteria
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/20/2017)... For today, Stock-Callers.com redirects investors, attention to Biotechnology, ... research aimed at treating diseases and medical conditions. Under evaluation ... (NASDAQ: KERX), Kite Pharma Inc. (NASDAQ: KITE), and ZIOPHARM Oncology ... complimentary research reports on these stocks now at: ... http://stock-callers.com/registration Biostage ...
(Date:4/19/2017)... ... April 19, 2017 , ... Nobilis Therapeutics ... Company Seeks to Leverage Clinical Data in its Upcoming Post Traumatic Stress Disorder Trial ... an 81 patient clinical trial assessing efficacy of its NBTX-001, a xenon-based therapeutic in ...
(Date:4/19/2017)... Calif. , April 19, 2017  As ... Drug Abuse and Heroin Summit ,  Proove® Biosciences, ... study analyzing genetics, environmental, and lifestyle factors to ... from the University of Southern California (USC), the ... , and Proove publish results showing that Proove ...
(Date:4/18/2017)... ... April 18, 2017 , ... ... Channel Partners 2017 Next-Gen Solution Provider. , Channel Partners program recognizes IT and ... their vision, innovation, and advocacy of the channel during transition and convergence. CallTower ...
Breaking Biology Technology:
(Date:3/27/2017)... 27, 2017  Catholic Health Services (CHS) has ... Society (HIMSS) Analytics for achieving Stage 6 on ... . In addition, CHS previously earned a place ... an electronic medical record (EMR). "HIMSS ... of EMR usage in an outpatient setting.  This ...
(Date:3/23/2017)... , March 23, 2017 The report "Gesture Recognition ... Biometric), Industry, and Geography - Global Forecast to 2022", published by MarketsandMarkets, the ... a CAGR of 29.63% between 2017 and 2022. ... ... ...
(Date:3/22/2017)... YORK , March 21, 2017 ... Marketing Cloud used by retailers such as 1-800-Flowers ... its platform — Product Recommendations and Replenishment. Using Optimove,s ... give more personalized product and replenishment recommendations to ... but also on predictions of customer intent drawn ...
Breaking Biology News(10 mins):