Researchers measure carbon nanotube i... ( LIVERMORE Calif. Carbon nanotubes h...)

Researchers measure carbon nanotube interaction

Date:10/16/2007

LIVERMORE, Calif. Carbon nanotubes have been employed for a variety of uses including composite materials, biosensors, nano-electronic circuits and membranes.

While they have proven useful for these purposes, no one really knows much about whats going on at the molecular level. For example, how do nanotubes and chemical functional groups interact with each other on the atomic scale" Answering this question could lead to improvements in future nano devices.

In a quest to find the answer, researchers for the first time have been able to measure a specific interaction for a single functional group with carbon nanotubes using chemical force microscopy a nanoscale technique that measures interaction forces using tiny spring-like sensors. Functional groups are the smallest specific group of atoms within a molecule that determine the characteristic chemical reactions of that molecule.

A recent report by a team of Lawrence Livermore National Laboratory researchers and colleagues found that the interaction strength does not follow conventional trends of increasing polarity or repelling water. Instead, it depends on the intricate electronic interactions between the nanotube and the functional group.

This work pushes chemical force microscopy into a new territory, said Aleksandr Noy, lead author of the paper that appears in the Oct. 14 online issue of the journal, Nature Nanotechnology.

Understanding the interactions between carbon nanotubes (CNTs) and individual chemical functional groups is necessary for the engineering of future generations of sensors and nano devices that will rely on single-molecule coupling between components. Carbon nanotubes are extremely small, which makes it particularly difficult to measure the adhesion force of an individual molecule at the carbon nanotube surface. In the past, researchers had to rely on modeling, indirect measurements and large microscale tests.

But the Livermore team w
'/>"/>

Contact: Anne Stark
stark8@llnl.gov
925-422-9799
DOE/Lawrence Livermore National Laboratory
Source:Eurekalert

0

GOOD

Page: 1 2
Related biology technology :

1. Tapping hidden assets: Wisconsin researchers who can create jobs
2. National Academies induct five UW researchers
3. Wisconsin researchers defend stem cell company
4. NimbleGen partners with leading researchers
5. Medical College researchers win federal grants
6. Researchers say scientific reporting needs more perspective, less hype
7. Congress passes bill to ease researchers collaboration worries
8. Researchers report development of embryonic stem cells without destroying embryo
9. New digs for UW AIDS researchers
10. Medical College researchers receive new grants to enhance discovery of heart-protecting anesthetics
11. Cloning ban too broad, stem-cell researchers argue

Post Your Comments:

(Date:2/8/2010)... Solutions (HDS) is pleased to announce that it has hired Lisa ... experts. Ms. Wichman joins HDS as an Account Manager and will focus ... AnalyticsPRO Division as the Manager of that group Omaha, NE. , ... ... (HDS) is pleased to announce the hiring of a new Account ...

(Date:2/5/2010)... has passed as fact among historians, journalists and politicians, ... the floor of the U.S. Congress: British forces used ... , But that claim has never been fully ... a historian at Colgate University. According to Douglas,s research, ... of Modern History , no such incident ever occurred. ...

(Date:2/5/2010)... Spanish . , Scientists at the ... for the first time different antioxidant compounds from foods ... herb called Teucrium polium. They have used two new ... have enabled them to identify and quantify a great ... , Functional foods such as olive oil, honey, walnuts ...

(Date:2/5/2010)... team of chemists from the University of Valencia (UV) ... an amphora found among remains at Lixus, in Morocco, ... fragments inside the 2,000-year-old vessel, which could be fragments ... group of archaeologists from the UV discovered a sealed ... founded by the Phoenicians near Larache, in Morocco. Since ...

Breaking Biology Technology:Healthcare Data Solutions Announces Expansion of its Healthcare Customer Solutions Team With Two Key Additions 2 Healthcare Data Solutions Announces Expansion of its Healthcare Customer Solutions Team With Two Key Additions 3 Despite claims, UK did not gas Iraqis in the 1920s, new research finds 2 Despite claims, UK did not gas Iraqis in the 1920s, new research finds 3 Despite claims, UK did not gas Iraqis in the 1920s, new research finds 4 New antioxidant compounds have been identified in foods such as olive oil, honey and nuts 2 Chemical analyses uncover secrets of an ancient amphora 2

[0] Healthcare Data Solutions Announces Expansion of its Healthcare Customer Solutions Team With Two Key Additions [0] Despite claims, UK did not gas Iraqis in the 1920s, new research finds [0] New antioxidant compounds have been identified in foods such as olive oil, honey and nuts [0] Chemical analyses uncover secrets of an ancient amphora

... March 25 David Koos, Chairman and CEO of ... BMSN), told the editors of The Wall Street Transcript, ... is an excellent possibility that the company "would have ... alliances and contracts "with companies engaged either in cryogenic ...

... Shire plc (LSE: SHP, NASDAQ:, SHPGY ), ... and Accounts in respect of the year ended December ... previously announced unaudited full,year 2008 results, prepared in accordance ... earnings announcement on February 19,2009. , ...

... 25 InNexus Biotechnology Inc., (OTC Bulletin Board: IXSBF; ... company commercializing the next generation of monoclonal antibodies based ... to announce that the Company has entered into a ... aggregate amount of up to USD$2.5 million. The loan ...

Bio-Matrix Scientific Group CEO Tells Wall Street Transcript That 'Positive Cash Flow' Is Possible in '09; New Stem Cell Banking Facility Is Growth Vehicle Over the Next Two Years, Says CEO in Exclusive News Interview Publication of Shire plc's Annual Report 2008 InNexus Biotechnology Announces a Loan Facility of up to USD$2.5 Million

(Date:2/7/2010)... Cancer Institute (NCI) have found that the prevalence of ... women without a personal history of breast cancer is ... of developing breast cancer in women who are at ... survey are published in the February issue of ... the American Association for Cancer Research. , The ...

(Date:2/7/2010)... habitat types can help maintain more stable butterfly populations ... published today (8 February 2010) in the journal ... scientists from the Centre for Ecology & Hydrology, Butterfly ... how we might design landscapes better to help conserve ... data (from satellite images) to collect information on the ...

(Date:2/7/2010)... announced today (7 Feb) they have identified for the ... humans. The team analyzed more than 500,000 genetic variations ... which are located near a gene called TERC. ... today by researchers from the University of Leicester and ... the Netherlands, was funded by The Wellcome Trust and ...

Breaking Biology News(10 mins):Few women take tamoxifen to prevent breast cancer 2 Conservation from space: Landscape diversity helps to conserve insects 2 Scientists identify first genetic variant linked to biological aging in humans 2 Indoor Tanning Association Fights Back Against Media Hype over Tanning Beds 53159 1 Indoor Tanning Association Fights Back Against Media Hype over Tanning Beds 53159 2 American Academy of Dermatology Commends Reclassification of Tanning Beds as Carcinogenic 53154 1 American Academy of Dermatology Commends Reclassification of Tanning Beds as Carcinogenic 53154 2 American Academy of Dermatology Commends Reclassification of Tanning Beds as Carcinogenic 53154 3 HPV Infection May Be Linked to Poor Head and Neck Cancer Survival Rates in African Americans 53150 1 HPV Infection May Be Linked to Poor Head and Neck Cancer Survival Rates in African Americans 53150 2 HPV Infection May Be Linked to Poor Head and Neck Cancer Survival Rates in African Americans 53150 3 HPV Infection May Be Linked to Poor Head and Neck Cancer Survival Rates in African Americans 53150 4

[0] Few women take tamoxifen to prevent breast cancer [0] Conservation from space: Landscape diversity helps to conserve insects [0] Scientists identify first genetic variant linked to biological aging in humans

... turn back the biological clock and extend their lifespan ... report. , Their study, published online this month in ... the old notion of a tradeoff between reproduction and ... that "the more you reproduce, the shorter you,re going ...

... exercise seems to reduce anger expression in overweight but ... study on the topic looked at 208 typically sedentary ... afterschool aerobic exercise program or maintained their usual inactive ... common anger expressions such as slamming doors and hitting, ...

... is probably the largest contaminant of our body. That ... humans has not been proven convincingly. The current Editorial ... Technology reflects on this and concludes that this ... to take measures to reduce our exposure from ...

Other Biology News:Old flies can become young moms 2 Exercise helps overweight children reduce anger expression 2 Mineral oil contamination in humans: A health problem? 2

Old flies can become young moms Exercise helps overweight children reduce anger expression Mineral oil contamination in humans: A health problem?

... Block is an anodized aluminum, solvent-resistant block ... to provide efficient thermal transfer to samples ... of the HT96 Isothermal Block replaces Cat. ... design allowing for compatibility with robotic applications. ...

...

Biology Products:

HT96 Isothermal Block from Novagen LABQUAKE from Barnstead Thermolyne Suramin, Sodium Salt from Calbiochem Microtiter Wells from Bethyl Laboratories

Researchers measure carbon nanotube i...( LIVERMORE Calif. Carbon nanotubes h...)