Navigation Links
Friction force differences could offer a new means for sorting and assembling nanotubes
Date:9/15/2009

rce is needed to move them."

The combined theoretical and experimental study was supported by the U.S. Department of Energy. Other institutions contributing to the project include the International Centre for Theoretical Physics, International School for Advanced Studies and CNR Democritos Laboratory all in Trieste, Italy and the University of Hamburg in Germany. The paper was published in advance online on September 13 by the journal Nature Materials.

Carbon nanotubes have exceptional thermal, mechanical and electrical properties that have generated considerable interest since they were first reported in 1991. Though friction has been studied before in nanotubes, this research is the first to provide detailed information about the frictional forces at work in both the longitudinal and transverse directions when the tubes interact with an AFM tip.

Friction is one of the oldest problems in physics and one of the most important to everyday life. It is estimated that the losses in the U.S. economy due to friction total about 6 percent of the gross national product. Friction is even more important to micro-electromechanical systems (MEMS) and nanoscale devices because these smaller systems are more affected by surface forces than large systems.

"As systems become smaller and smaller, it becomes more important to understand how to address friction," said Riedo. "Surface forces can prevent micro and nano systems from operating at all."

Experimentally, the researchers scanned an atomic force microscope tip longitudinally along a series of multiwalled carbon nanotubes held stationary on a substrate. They also conducted a series of similar scans in the transverse direction. The researchers applied a consistent force on the AFM tip in both scanning directions, and relied on powerful Van der Waals forces to hold tubes in place on the substrate.

"When you scan a nanotube transversely, you are probing s
'/>"/>

Contact: John Toon
jtoon@gatech.edu
404-894-6986
Georgia Institute of Technology Research News
Source:Eurekalert  

Page: 1 2 3 4

Related biology technology :

1. Heavier hydrogen on the atomic scale reduces friction
2. Liko Introduces Two Additions to Its Stat Family of Low Friction Sheets
3. Models present new view of nanoscale friction
4. Roche Joins Forces With Enon Tabernacle Baptist Church to Provide Free Hepatitis C Testing to the Community
5. Cephalon Reinforces Important Prescribing and Dosing Information for FENTORA
6. European Expert Consortium Combines Forces to Develop a Novel Pandemic Influenza Vaccine
7. New force-fluorescence device measures motion previously undetectable
8. Empire Genomics and Reprogenetics Join Forces to Improve Preimplantation Genetic Diagnosis (PGD)
9. ForceLogix, Innovex Win Sales Operational Performance Award
10. Neurocrine Announces Work Force Restructuring
11. Workforce Alliance Concludes Three-Year Biotech Training Program
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Friction force differences could offer a new means for sorting and assembling nanotubes
(Date:8/31/2015)... Aug. 31, 2015  US-Australian drug discovery company, ... today confirmed its comprehensive scientific review has identified ... in areas of unmet patient need. Novogen is ... preclinical projects prior to entering into Phase 1 ... Acting Chief Executive Officer, Iain Ross ...
(Date:8/31/2015)... 31, 2015 Trimb Healthcare AB ("Trimb") today ... YouMedical Group BV ("YouMedical"), a Dutch OTC company with ... sales of approximately EUR 16 million, with solid growth ... "Our ambition is to build a leading international OTC ... that goal. YouMedical gives us a stronger North European ...
(Date:8/31/2015)... ... , ... Proove Biosciences, Inc. is a finalist for the Outstanding Tech Company ... Now in its 22nd year, this premier awards event celebrates the best in Orange ... around the world. The OC Tech Alliance will announce all winners at a gala ...
(Date:8/28/2015)... ... August 28, 2015 , ... ... presented two studies at the International Spine Intervention Society’ s 23rd ... through to August 1st, 2015. With a focus on evidence-based research and clinical ...
Breaking Biology Technology:Novogen Announces The Outcome Of A Comprehensive Science Review 2Novogen Announces The Outcome Of A Comprehensive Science Review 3Novogen Announces The Outcome Of A Comprehensive Science Review 4Novogen Announces The Outcome Of A Comprehensive Science Review 5Novogen Announces The Outcome Of A Comprehensive Science Review 6Proove Biosciences, Inc. Named a Finalist for 22nd OC Tech Alliance High-Tech Awards for Company of the Year 2Proove Biosciences, Inc. Named a Finalist for 22nd OC Tech Alliance High-Tech Awards for Company of the Year 3Proove Biosciences, Inc. Named a Finalist for 22nd OC Tech Alliance High-Tech Awards for Company of the Year 4Proove Biosciences Presents New Research Study at the International Spine Intervention Society’s Annual Scientific Meeting 2Proove Biosciences Presents New Research Study at the International Spine Intervention Society’s Annual Scientific Meeting 3Proove Biosciences Presents New Research Study at the International Spine Intervention Society’s Annual Scientific Meeting 4
... in Spanish . Tecnalia Research & ... within the VII Framework Programme `Sporte2. The project will provide ... people, such as sports halls and other leisure facilities. This ... energy in its three dimensions: generation, interchange with the energy ...
... Jan. 5, 2011 International energy pricing agency Argus ... into US and Canadian wood chip pricing complements Argus ... European biomass indexation. " Argus understands the ... be at the forefront, providing transparency to emerging biomass markets," ...
... 2011 ViroPharma Incorporated (Nasdaq: VPHM ) today ... ViroPharma, will present at the 29th Annual J.P. Morgan Healthcare ... January 12, 2011.  The conference is being held at the ... presentations will be webcast live for investors through www.viropharma.com ...
Cached Biology Technology:Tecnalia leads the integration of energy efficiency in sports facilities 2Argus Launches North American Wood Chip Price Assessments 2ViroPharma to Participate in the 29th Annual J.P. Morgan Healthcare Conference 2
(Date:8/12/2015)... 12, 2015 As the digital ... innovation and advanced biometrics technology is accelerating beyond expectations.  ... rely on using their credit cards, the digital currency, ... for payment services led by companies in the space ... Google, Inc. (NASDAQ: GOOG ), Apple Inc. (NASDAQ: ...
(Date:8/11/2015)... , August 11, 2015 Today, ZUK ... Already received as well as expected revenues in 2015 that relate ... FPC,s communicated revenue guidance of approximately 2,200 MSEK for 2015. ... is a prominent smartphone manufacturer in ... ZUK selected FPC1 155 for ...
(Date:8/6/2015)... 2015  Today, U.S. Congressman Mike Honda ... to learn firsthand how Silicon Valley technologies can ... a world leader in multi-factor identity management and ... federal agencies and commercial organizations achieve new levels ... "The vast majority of network breaches can be ...
Breaking Biology News(10 mins):Digital Wallet Devices & Mobile Payment Management Services Gain a Distinct Advantage in the Digital Payment Evolution as Demand Continues to Grow 2Digital Wallet Devices & Mobile Payment Management Services Gain a Distinct Advantage in the Digital Payment Evolution as Demand Continues to Grow 3Digital Wallet Devices & Mobile Payment Management Services Gain a Distinct Advantage in the Digital Payment Evolution as Demand Continues to Grow 4Digital Wallet Devices & Mobile Payment Management Services Gain a Distinct Advantage in the Digital Payment Evolution as Demand Continues to Grow 5Digital Wallet Devices & Mobile Payment Management Services Gain a Distinct Advantage in the Digital Payment Evolution as Demand Continues to Grow 6FPC's Touch Fingerprint Sensor FPC1155 in ZUK's Smartphone Z1 2Rep. Honda to Visit Crossmatch in Redwood City 2
... Wash.There really is a balance of nature, but as accepted ... Washington State University researchers writing in the journal Nature ... typical of organic farms work better at fighting pests and ... pests and their natural enemies in potatoes and found organic ...
... co-led by scientists from the University of Michigan have discovered ... are associated with increased risk of type 2 diabetes, bringing ... on a string of DNA where one of the "letters," ... DNA, any two people will have the same letter. The ...
... before the dawn of agriculture, people may have caused the planet ... used to roam modern-day Russia and North America, but are now ... a hand in wiping them out. A new study, accepted for ... American Geophysical Union (AGU), argues that this die-off had the side ...
Cached Biology News:'Balanced' ecosystems seen in organic ag better at controlling pests 2New variants found that indicate a predisposition to type 2 diabetes 2Man-made global warming started with ancient hunters 2Man-made global warming started with ancient hunters 3
... Kits are designed for ultra-sensitive detection ... or PVDF membranes. Since all necessary ... primary antibodies), the WesternBreeze Kits save ... protocol and getting your final results. ...
Carbonate-Bicarbonate Buffer Capsules. For use in coating ELISA plates. Dissolve contents of 1 capsule in 100 ml deionized water to yield 0.05 M carbonate-bicarbonate buffer, pH 9.6....
... Adhesion Molecule The L1CAM ... involved in three distinct conditions: 1) HSAS ... MASA (mental retardation, aphasia, shuffling gait, adductus ... Immunogen: Homogenous suspension of ...
...
Biology Products: