Navigation Links
True properties of carbon nanotubes measured
Date:8/15/2008

EVANSTON, Ill. --- For more than 15 years, carbon nanotubes (CNTs) have been the flagship material of nanotechnology. Researchers have conceived applications for nanotubes ranging from microelectronic devices to cancer therapy. Their atomic structure should, in theory, give them mechanical and electrical properties far superior to most common materials.

Unfortunately, theory and experiments have failed to converge on the true mechanical properties of CNTs. Researchers at Northwestern University recently made the first experimental measurements of the mechanical properties of carbon nanotubes that directly correspond to the theoretical predictions.

Carbon nanotubes are cylindrical structures usually less than 30 nanometers in diameter and several microns long. Their small size makes them very strong but at the same time quite difficult to test individually; as a result, experiments typically deviate widely from predictions based on quantum mechanics.

"Imaging and measurement resolutions as well as atomic structural ambiguities (defects) obscured the results of most experiments and provided unreliable mechanical predictions," said Horacio Espinosa, a professor of mechanical engineering at Northwestern's McCormick School of Engineering and Applied Science.

Espinosa and his group at Northwestern have resolved these issues using a nanoscale material testing system based on microelectromechanical system (MEMS) technology. This system allows electronic measurements of load and displacement during a test, which is performed inside a transmission electron microscope to provide real-time atomic imaging.

"This method removes all ambiguity from testing results," Espinosa said. "We can be certain of all the quantities we have measured, and the results match quantum mechanics predictions very well."

Espinosa collaborated with George Schatz, Morrison Professor of Chemistry in Northwestern's Weinberg College of Arts and
'/>"/>

Contact: Megan Fellman
fellman@northwestern.edu
847-491-3115
Northwestern University
Source:Eurekalert

Page: 1 2 3

Related biology technology :

1. Study reveals principles behind stability and electronic properties of gold nanoclusters
2. Eniva VIBE(R) Nutraceutical Tested at Linus Pauling Micronutrient Research Institute and Found to Possess DNA Protective Properties
3. Physicists discover how fundamental particles lose track of quantum mechanical properties
4. NIST imaging system maps nanomechanical properties
5. Understanding of actuator properties of carbon nanotubes bring micro machines closer
6. New Oral MEK Inhibitor, RDEA119, Shows Favorable Anti-Tumor Properties
7. Isis Awarded $1.5 Million NIH Grant to Improve Chemical Properties of RNAi-Based Therapeutics
8. Carbon Nanoprobes, Inc Announces Production Agreement With Leading MEMS Foundry
9. A phonon floodgate in monolayer carbon
10. Carbon hoofprint: Cows supplemented with rbST reduce agricultures environmental impact
11. LLNL researchers peer into water in carbon nanotubes
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/19/2014)... --Research and Markets ( http://www.researchandmarkets.com/research/fhh9rj/technology ) ... Innovations in Smart Fabrics (Technical Insights)" report ... http://photos.prnewswire.com/prnh/20130307/600769 The Research Service titled ... assessment on technological advancements and market for Smart ... 1. The Smart Fabrics market is expected to ...
(Date:12/19/2014)... CAMBRIDGE, MA (PRWEB) December 18, 2014 ... adults in the United States suffer from one or ... arthritis, asthma, or cancer. Medication can address some of ... to daily activities that many sufferers face. While implanted ... surgery and stimulate the whole nerve, which can induce ...
(Date:12/19/2014)... , Dec. 18, 2014  Decision Resources Group ... dental biomaterial market will grow moderately through 2023 as ... and growing awareness of dental biomaterials all spur procedure ... such as China and ... bring dental procedures within reach for a larger proportion ...
(Date:12/17/2014)... Based on the revenues gained from surgical imaging ... by four major players contributing to approximately 74% ... GE Healthcare (U.K.), Siemens AG (Germany), Philips (Netherlands), ... Copy at http://www.marketsandmarkets.com/Market-Reports/surgical-imaging-market-210534462.html , The leading ... its strong product portfolio, which includes its flagship ...
Breaking Biology Technology:Technology Innovations in Smart Fabrics (Technical Insights) 2Draper Wins GSK Funding for Smaller, Smarter Implantable Devices 2Asia Pacific Dental Biomaterial Market Will Grow Strongly Through 2023 2Asia Pacific Dental Biomaterial Market Will Grow Strongly Through 2023 3Global Refurbished Surgical Imaging Market by Product & Application is Estimated to Reach $1.25 Billion by 2019 - New Research Report by MarketsandMarkets 2Global Refurbished Surgical Imaging Market by Product & Application is Estimated to Reach $1.25 Billion by 2019 - New Research Report by MarketsandMarkets 3Global Refurbished Surgical Imaging Market by Product & Application is Estimated to Reach $1.25 Billion by 2019 - New Research Report by MarketsandMarkets 4
... Leveraging the benefits of silicone technology for healthcare ... Feb. 2 Polymer Science, Inc. will introduce ... MD&M West (booth 1646) from February 10-12 in ... the medical market for innovative skin contact applications, ...
... highlight its 20 years of experience as a leader ... ) is offering free microbial identification testing , ... eligible attendees visiting the Microtest exhibit, #828, at MD&M ... wide range of laboratory testing and validation services - ...
... /PRNewswire-FirstCall/ - BioSyntech, Inc. (TSX: BSY), a biotechnology ... announced that it has completed enrolment for the ... BST-CarGel(R). The Company achieved its planned objective of ... "We are grateful to the distinguished group of ...
Cached Biology Technology:Polymer Science Releases New Silicone Gel Adhesive Products for MD&M West 2Microtest Labs Offers Free Microbial Identification Testing, Free Shipping on Other Tests, to MD&M West Attendees 2BioSyntech Achieves Enrolment Goal for Pivotal Trial of BST-CarGel(R), its Cartilage Repair Device 2BioSyntech Achieves Enrolment Goal for Pivotal Trial of BST-CarGel(R), its Cartilage Repair Device 3
(Date:12/19/2014)... DUBLIN , Dec. 18, 2014 Research ... announced the addition of the "iPhone 5S ... Technology Report" report to their offering. ... Following the acquisition of AuthenTec in July 2012, ... iPhone 5S. It is currently the only device ...
(Date:12/19/2014)... LAS VEGAS , Dec. 18, 2014   ... platform built for the post-password and Internet of Things ... additional seed funding. The venture round was led by ... Pantera Capital, Rimrock Venture Partners, VegasTechFund, and others.  LaunchKey ... the new funding to expand its team and bring ...
(Date:12/17/2014)... Dec. 15, 2014  HITLAB SM announced ... (GCP) audit to confirm its adherence to current ... accomplishment enables HITLAB to conduct regulated smart device ... principles for patient safety and research quality. ... access, quality, and delivery with innovative technology," said ...
Breaking Biology News(10 mins):iPhone 5S Fingerprint Sensor - Apple/AuthenTec TMDR92 & Sapphire - Technology Report 2LaunchKey Raises $3 Million in Additional Funding Led by Metamorphic Ventures 2LaunchKey Raises $3 Million in Additional Funding Led by Metamorphic Ventures 3HITLAB Completes GCP Audit for FDA Smart Device & App Compliance 2
... (June 26, 2013)Should women take calcium and vitamin D ... opinions are strong. But now, an analysis from the ... the supplement sideat least for women taking hormones after ... Menopause , the journal of The North American Menopause ...
... women affects an estimated 516,000 women worldwide, of which ... Europe. Until now, lung cancers occurring in women have ... numerous studies have highlighted different characteristics of lung cancer ... III in France aim to compare clinical, pathological and ...
... Researchers at Columbia University Medical Center (CUMC) have demonstrated ... of a signaling pathway that leads to cognitive decline ... model of Alzheimer,s, suggest that inhibiting this protein could ... with the disease. The study was published this month ...
Cached Biology News:Calcium and vitamin D help hormones help bones 2Study identifies protein that contributes to cognitive decline in Alzheimer's 2
...
Standard 2" and 3" Fiberboard Boxes can be sold separately or with 16, 25, 36, 49, 64, 81 or 100 cell dividers. Fiberboard boxes can also be ordered with corresponding freezer racks...
Whole blood is collected from mice (Swiss Webster, 8-10 weeks old,either sex) and processed within 45 minutes of collection. The complement is then filtered and pooled on ice, bottled and stored at -...
... Immunogen : Recombinant human ... 5mg/ml BSA, 0.15M NaCl, 0.05% ... of glycerol to 30% Quality ... on acid extracts of murine ...
Biology Products: