Navigation Links
'Amplified' nanotubes may power the future
Date:7/14/2011

of following through when he joined the lab five years ago. "When I first heard about Rice University, it was because of Rick Smalley and carbon nanotubes," said Orbaek, a native of Ireland. "He had a large global presence with regard to nanotechnology, and that reached me.

"So I was delighted to come here and find I'd be working on nanotube growth that was related to Smalley's work."

Orbaek said he hasn't strayed far from Barron's original direction, which involved chemically attaching an iron/cobalt catalyst to the ends of nanotubes and then fine-tuning the temperature and environment in which amplification could occur.

"My group, with Smalley and Tour's group, demonstrated you could do this -- but in the first demonstration, we got only one tube to grow out of hundreds or thousands," Barron said. Subsequent experiments raised the yield, but tube growth was minimal. In other attempts, the catalyst would literally eat -- or "etch" -- the nanotubes, he said.

Refining the process has taken years, but the payoff is clear because up to 90 percent of the nanotubes in a batch can now be amplified to significant lengths, Barron said. The latest experiments focused on single-walled carbon nanotubes of various chiralities, but the researchers feel the results would be as great, and probably even better, with a batch of pristine armchairs.

The key was finding the right balance of temperatures, pressures, reaction times and catalyst ratios to promote growth and retard etching, Barron said. While initial growth took place at 1,000 degrees Celsius, the researchers found the amplification step required lowering the temperature by 200 degrees, in addition to adjusting the chemistry to maximize the yield.

"What we're getting to is that sweet spot where most of the nanotubes grow and none of them etch," Barron said.

Wade Adams, director of Rice's Richard E. Smalley Institute for Nanoscale Science and Technology and pri
'/>"/>

Contact: David Ruth
druth@rice.edu
713-348-6327
Rice University
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Better viewing through fluorescent nanotubes when peering into innards of a mouse
2. Researchers create functioning synapse using carbon nanotubes
3. Metallic molecules to nanotubes: Spread out!
4. Directed self-assembly of vertical nanotubes for biosensors, logic, nano-biofuel cells
5. Tests show bright future for gadonanotubes in stem cell tracking
6. The effects of hydrogen on growing carbon nanotubes
7. Nanotubes pass acid test
8. Carbon nanotubes form ultrasensitive biosensor to detect proteins
9. Carbon nanotubes boost cancer-fighting cells
10. Carbon nanotubes show promise for high-speed genetic sequencing
11. Combining nanotubes and antibodies for breast cancer search and destroy missions
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/27/2015)...   Zynx Health ™, the market leader ... today announced that its ZynxCarebook ™ mobile ... smartphones and tablets. With this expansion, care team ... ZynxCarebook to securely exchange messages and share assessments ... to other care settings, and improve clinical outcomes ...
(Date:7/21/2015)... July 21, 2015 Passwords have proven ... in the recent U.S. Office of Personnel Management ... the infosec conundrum, but developers and end-users are ... address this dilemma, Biometrics-as-a-Service provider HYPR Corp. announced ... SDK for third party integration. ...
(Date:7/9/2015)... , July 07, 2015 ... the addition of the "Biometrics for Banking; ... 2015-2020" report to their offering. ... contributor to this growth and the forecast is ... in revenue for companies involved in delivering biometric ...
Breaking Biology News(10 mins):Zynx Health Adds Android Device Support to ZynxCarebook Solution 2Zynx Health Adds Android Device Support to ZynxCarebook Solution 3HYPR Corp. Launches Industry First Biometric Tokenization Platform 2HYPR Corp. Launches Industry First Biometric Tokenization Platform 3HYPR Corp. Launches Industry First Biometric Tokenization Platform 4Global Banking Biometrics Market 2015-2020 - Market & Technology Analysis, Adoption Strategies and Forecasts 2Global Banking Biometrics Market 2015-2020 - Market & Technology Analysis, Adoption Strategies and Forecasts 3
... Global plant productivity that once was on the rise with ... the decline because of regional drought according to a new ... a measure of the rate of the photosynthesis process that ... water to sugar, oxygen and eventually plant tissue. Compared with ...
... Skeletal muscles combust both lipids and carbohydrates during exercise. ... muscles as well as glucose extracted from the blood. ... represents an important model tissue for studying the intracellular ... This is important because it is known that the ...
... release is available in Spanish . ... Chesapeake Bay tributary revealed troublesome levels of nitrogen and ... U.S. Department of Agriculture (USDA) scientists and their cooperators. ... and their collaborators conducted the study as part of ...
Cached Biology News:Drought drives decade-long decline in plant growth 2New molecular signaling cascade increases glucose uptake 2CEAP study examines nitrogen, copper levels in Bay watershed 2
(Date:8/5/2015)... ... August 05, 2015 , ... ... announces the launch of an updated corporate identity, including new company name, logo ... (MTI) in 2009. The company moved into a new, joint facility in 2014 ...
(Date:8/4/2015)... , Aug. 4, 2015 Trigemina, Inc., a ... non-narcotic, nasally delivered, analgesic drug products, announced today that ... the position of chief medical officer. Dr. Kori brings ... much of which has been focused in the neuroscience ... add Dr. Kori to our clinical team given his ...
(Date:8/4/2015)... ... , ... On August 4, 2015, the White House will host a Demo ... United States to talk about their experiences with innovation and present their big ideas. ... the attendees. , One of the day’s aims is to grow the innovation economy, ...
(Date:8/3/2015)... 2015 At the 11th hour, ... waved the shortfall of Jude Liversage,s campaign ... the first time.      (Photo: http://photos.prnewswire.com/prnh/20150803/254228 ... ) The Selective Dorsal Rhizotomy (SDR) procedure ... carry out his wish to kick a ball around ...
Breaking Biology Technology:MTI-GlobalStem Announces Updated Company Identity and Website 2MTI-GlobalStem Announces Updated Company Identity and Website 3Trigemina Appoints Dr. Shashi Kori to the Position of Chief Medical Officer 2Trigemina Appoints Dr. Shashi Kori to the Position of Chief Medical Officer 3White House Invites uBiome CEO Jessica Richman to First-Ever Startup Demo Day 2Cerebral Palsy Operation by The Portland Hospital Allows a Boy to Stand Properly for the First Time 2Cerebral Palsy Operation by The Portland Hospital Allows a Boy to Stand Properly for the First Time 3
... Agreement With L-1 Identity Solutions for the Purchase... -- PARIS, September 20, 2010 ... ... --> ... s = ,; var first_result; // Results are keyed by longUrl, so we need to grab the ...
... Sept. 17 /PRNewswire-FirstCall/ - Neuro-Biotech Corp. (PINKSHEETS: MRES) (OTCQB: ... President and CEO. Mr Barry Somervail comments ... direction during the summer of 2010, I stayed on ... to facilitate the transition process, and now that this ...
... and Dr. J.B. Jupiter Explore the Power of Virtual... -- LEUVEN, Belgium and BOSTON, September 17, 2010 ... ... if (typeof(lpUnit)==,undefined,) var lpUnit=,PRN,; --> ... = function(data) { var s = ,; var first_result; // Results are keyed by longUrl, so we ...
Cached Biology Technology:Safran Enters Into a Definitive Agreement With L-1 Identity Solutions for the Purchase of L-1 Biometrics and ID Management Solutions Businesses 2Safran Enters Into a Definitive Agreement With L-1 Identity Solutions for the Purchase of L-1 Biometrics and ID Management Solutions Businesses 3Safran Enters Into a Definitive Agreement With L-1 Identity Solutions for the Purchase of L-1 Biometrics and ID Management Solutions Businesses 4Safran Enters Into a Definitive Agreement With L-1 Identity Solutions for the Purchase of L-1 Biometrics and ID Management Solutions Businesses 5Safran Enters Into a Definitive Agreement With L-1 Identity Solutions for the Purchase of L-1 Biometrics and ID Management Solutions Businesses 6Safran Enters Into a Definitive Agreement With L-1 Identity Solutions for the Purchase of L-1 Biometrics and ID Management Solutions Businesses 7Safran Enters Into a Definitive Agreement With L-1 Identity Solutions for the Purchase of L-1 Biometrics and ID Management Solutions Businesses 8Safran Enters Into a Definitive Agreement With L-1 Identity Solutions for the Purchase of L-1 Biometrics and ID Management Solutions Businesses 9Safran Enters Into a Definitive Agreement With L-1 Identity Solutions for the Purchase of L-1 Biometrics and ID Management Solutions Businesses 10Safran Enters Into a Definitive Agreement With L-1 Identity Solutions for the Purchase of L-1 Biometrics and ID Management Solutions Businesses 11Safran Enters Into a Definitive Agreement With L-1 Identity Solutions for the Purchase of L-1 Biometrics and ID Management Solutions Businesses 12Mr Claude Poulin nominated as President and CEO of Neuro-Biotech Corp. 2Materialise and Dr. J.B. Jupiter Explore the Power of Virtual Surgical Planning in Correcting Compound Wrist Fractures 2Materialise and Dr. J.B. Jupiter Explore the Power of Virtual Surgical Planning in Correcting Compound Wrist Fractures 3Materialise and Dr. J.B. Jupiter Explore the Power of Virtual Surgical Planning in Correcting Compound Wrist Fractures 4Materialise and Dr. J.B. Jupiter Explore the Power of Virtual Surgical Planning in Correcting Compound Wrist Fractures 5Materialise and Dr. J.B. Jupiter Explore the Power of Virtual Surgical Planning in Correcting Compound Wrist Fractures 6Materialise and Dr. J.B. Jupiter Explore the Power of Virtual Surgical Planning in Correcting Compound Wrist Fractures 7
... Leptin is a proteohormone with a molecular weight of ... the ob gene and produced by adipocytes [1,2]. ... the regulation of body weight [1-3]. In the ... both men and women [4]. A relationship between ...
... this kit are prepared with pure chemicals ... Mitochondria Isolation Kit is designed to isolating ... and easy way. One kit is consisted ... (enriching mitochondria from 10 20 g ...
... endotoxin-free plasmid DNA preparations are prepared ... quantities from 1mg to multi-gram scales. ... customer needs, and glycerol stocks are ... Transformation, clonal selection (Clonal selection includes ...
... polypeptide hormones which belong to the ... TGF- superfamily is a large group ... many aspects of development, reproductive function ... incude TGF-s, bone morphogenetic proteins, growth ...
Biology Products: