Navigation Links
Sandia researchers construct carbon nanotube device that can detect colors of the rainbow
Date:4/30/2009

r nanodetector was orders of magnitude more sensitive, down to about 40 W/m2about 3 percent of the density of sunshine reaching the ground. "Because the dye is so close to the nanotube, a little change turns into a big signal on the device," says Zhou.

The research is in its second year of internal Sandia funding and is based on Lonard's collaboration with the University of Wisconsin to explain the theoretical mechanism of carbon nanotube light detection. Lonard literally wrote the book on carbon nanotubesThe Physics of Carbon Nanotubes, published September 2008.

Lonard says the project draws upon Sandia's expertise in both materials physics and materials chemistry. He and Wong laid the groundwork with their theoretical research, with Wong completing the first-principles calculations that supported the hypothesis of how the chromophores were arranged on the nanotubes and how the chromophore isomerizations affected electronic properties of the devices.

To construct the device, Zhou and Krafcik first had to create a tiny transistor made from a single carbon nanotube. They deposited carbon nanotubes on a silicon wafer and then used photolithography to define electrical patterns to make contacts.

The final piece came from Vance and Zifer, who synthesized molecules to create three types of chromophores that respond to either the red, green, or orange bands of the visible spectrum. Zhou immersed the wafer in the dye solution and waited a few minutes while the chromophores attached themselves to the nanotubes.

The team reached their goal of detecting visible light faster than they expectedthey thought the entire first year of the project would be spent testing UV light. Now, they are looking to increase the efficiency by creating a device with multiple nanotubes.

"Detection is now limited to about 3 percent of sunlight, which isn't bad compared with a commercially available digital camera," says Zhou. "I hope to a
'/>"/>

Contact: Mike Janes
mejanes@sandia.gov
925-294-2447
DOE/Sandia National Laboratories
Source:Eurekalert  

Page: 1 2 3

Related biology technology :

1. Researchers improve ability to write and store information on electronic devices
2. Long-awaited international ethical guidelines for biobank researchers
3. CU researchers shed light on light-emitting nanodevice
4. Stevens researchers provide new information about mass spectrometry
5. Researchers measure carbon nanotube interaction
6. Researchers underscore limitations of genetic ancestry tests
7. ASU researchers improve memory devices using nanotech
8. UD researchers race ahead with latest spintronics achievement
9. Researchers outline structure of largest nonvirus particle ever crystallized
10. Ames Laboratory researchers solve fuel-cell membrane structure conundrum
11. Researchers use magnetism to target cells to animal arteries
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Sandia researchers construct carbon nanotube device that can detect colors of the rainbow
(Date:8/21/2014)... 21, 2014 On Wednesday of last week ... use Redox Signaling molecules, became available for purchase in Australia ... "The way that RENU 28 works is, if you think ... of the rate of cellular renewal within your body. If ... of that rate of cellular renewal. What RENU 28 does ...
(Date:8/20/2014)... of patented university inventions licensed to biotechnology firms ... commercialization. To open these roadblocks, the researchers suggest ... the discovery stage could lead to faster commercialization ... derived from discoveries made in university laboratories and ... during clinical trials, which have a high failure ...
(Date:8/20/2014)... time, chemists have succeeded in measuring vibrational motion of ... study reveals how vibration of a single molecule differs ... The study was performed at the University of California, ... of Jyvskyl works as a visiting fellow under professor ... The second team was lead by Professor Eric O. ...
(Date:8/20/2014)... High performance computing (HPC) will ... complete climate and Earth system model to address ... , Eight national laboratories, including Lawrence Livermore ... for Atmospheric Research, four academic institutions and one ... national laboratories include Argonne, Brookhaven, Lawrence Berkeley, Los ...
Breaking Biology Technology:RENU 28 Skin Care Now Available in Australia and New Zealand 2Early bottlenecks in developing biopharmaceutical products delay commercialization 2Early bottlenecks in developing biopharmaceutical products delay commercialization 3Seeing a molecule breathe 2New Project Is the ACME of Addressing Climate Change 2New Project Is the ACME of Addressing Climate Change 3
... GeneGo, Inc., the leading systems biology tools company, ... curated pathway maps from GeneGo, Inc. for their ... www.millipore.com/pathways , the tool links Millipore,s cutting edge ... bioinformatics content to related biological pathways. These maps ...
... company Pharmaxis,(ASX: PXS; Nasdaq: PXSL ) today ... senior management team in the position of Chief Medical ... pharmacovigilance and,medical affairs. Clinical Operations will continue to ... Dr Fox has more than 15 ...
... Sirion Therapeutics, Inc., a privately held ophthalmic-focused biopharmaceutical ... an agreement with Advanced Vision Research, Inc. (AVR) ... AVR,s new MacuTrition(R) oral retinal nutritional supplement and ... gland therapy. AVR is a privately held ophthalmic ...
Cached Biology Technology:Millipore Launches an Interactive Biological Pathway Tool Using GeneGo's Manually Curated Pathway Maps 2Millipore Launches an Interactive Biological Pathway Tool Using GeneGo's Manually Curated Pathway Maps 3Pharmaxis Builds Senior Management Team 2Sirion Therapeutics Partners With Advanced Vision Research (TheraTears(R)) to Promote Products for Retinal and Meibomian Gland Health 2Sirion Therapeutics Partners With Advanced Vision Research (TheraTears(R)) to Promote Products for Retinal and Meibomian Gland Health 3
(Date:8/20/2014)... VALLEY, Calif., August 19, 2014 -- Bay Area Lyme ... diagnose and simple to cure, applauds new research published ... journal Ticks and Tick-borne Diseases . The ... Northwest California are active throughout the year, making the ... by researchers at California Department of Public Health (CDPH) ...
(Date:8/20/2014)... Ore. -- When are athletes who have suffered concussions ... Oregon study has found that high school athletes who ... 60 days experience a significant regression in their abilities ... The regression, as seen in changes in their balance ... 19 athletes. Ten of the 12 had returned to ...
(Date:8/20/2014)... During the past few years, Virginia Tech,s Wu Feng ... Microsoft grant from the "Computing in the Cloud" program, ... a $6 million award from the Air Force on ... from NSF and the National Institutes of Health on ... wove together the "parallel computing" aspects from each grant, ...
Breaking Biology News(10 mins):Lyme disease risk is year-round in Northwest California, according to new study 2Lyme disease risk is year-round in Northwest California, according to new study 3Recovery reversal seen in Oregon study of returning concussed athletes 2Recovery reversal seen in Oregon study of returning concussed athletes 3The internet was delivered to the masses; parallel computing is not far behind 2The internet was delivered to the masses; parallel computing is not far behind 3The internet was delivered to the masses; parallel computing is not far behind 4
... also available in Chinese on EurekAlert! Chinese ... scientists have published new research that improves the survival and ... Hsiao Chang Chan, from the Chinese University of Hong Kong, ... differentiation has led to a variety of breakthroughs as stem ...
... and alcohol serve as gateway drugs, which people use ... to cocaine and other illicit substances; this progression is ... in Science Translational Medicine by Amir Levine, ... at Columbia University Medical Center provides the first molecular ...
... want to get a jump on the latest news in ... Graduate Student Research Day set for Nov. 9, 2011. ... an opportunity for the best and brightest graduate students to ... Students from Stevens Institute of Technology, Rutgers University ...
Cached Biology News:Reprogramming stem cells to a more basic form results in more effective transplant, study shows 2Nicotine primes brain for cocaine use: Molecular basis of gateway sequence of drug use 2NJIT grad students display work at 7th annual Research Day on Nov. 9 2
... monoclonal [198C679.2.1] to Presenilin 2 Alzheimer's ... of the disease carry mutations in the ... precursor protein (APP). These disease-linked mutations result ... of amyloid-beta (main component of amyloid deposits ...
Human Presenilin-2 NTF Affinity Purified Polyclonal Ab...
5-bromo-2'-deoxyuridine (BrdU) Cell Biology Cell Proliferation Bromodeoxyuridine (BrdU) and Related Products...
2'-Fluorine-CTP (2'-F-CTP) is readily incorporated into transcripts by T7 and SP6 R&DNA™ Polymerase and is available separately....
Biology Products: