Navigation Links
Sensing the infrared: Researchers improve IR detectors with single-walled carbon nanotubes
Date:5/23/2012

WASHINGTON, May 23Whether used in telescopes or optoelectronic communications, infrared detectors must be continuously cooled to avoid being overwhelmed by stray thermal radiation. Now, a team of researchers from Peking University, the Chinese Academy of Sciences, and Duke University (USA) is harnessing the remarkable properties of single-walled carbon nanotubes (SWNTs) to create highly sensitive, "uncooled" photovoltaic infrared detectors.

This new type of detector, which the team describes in a paper published today in the Optical Society's (OSA) open-access journal Optical Materials Express, may prove useful for industrial, military, manufacturing, optical communications, and scientific applications.

Carbon nanotubes are known for their outstanding mechanical, electrical, and optical properties. "They also are an ideal nanomaterial for infrared applications," says Sheng Wang, an associate professor in the Department of Electronics at Peking University in Beijing, China, and an author of the Optical Materials Express paper. "For starters, these nanotubes exhibit strong and broadband infrared light absorption, which can be tuned by selecting nanotubes of different diameters. Also, due to their high electron mobility, nanotubes react very rapidly on the order of picoseconds to infrared light." In comparison to traditional infrared detectors, which are based on semiconductors made of a mercury-cadmium-telluride alloy, the SWNTs are an order of magnitude more efficient, the researchers report.

The team's photovoltaic infrared detector is formed by aligning SWNT arrays on a silicon substrate. The nanotubes arrays are then placed between asymmetric palladium and scandium contacts. These two metals have properties that collectively create what is known as an Ohmic contact, a region in a semiconductor device that has very low electrical resistance, which helps make the detector operate more efficiently.

"Fab
'/>"/>

Contact: Angela Stark
astark@osa.org
202-416-1443
Optical Society of America
Source:Eurekalert  

Page: 1 2 3

Related biology technology :

1. Sensorin Raises Equity Financing to Launch Novel Industrial Sensing Venture
2. A revolutionary breakthrough in terahertz remote sensing
3. Novel electronic biosensing technology could facilitate new era of personalized medicine
4. A revolutionary breakthrough in terahertz remote sensing
5. Image Sensing Systems Announces First Quarter Financial Results
6. Biosensing tool to detect salmonella holds promise for preventing common food poisoning
7. Research at Rice University leads to nanotube-based device for communication, security, sensing
8. Understanding the science of solar-based energy: more researchers are better than one
9. Researchers decode viral process that prepares cells for HIV infection
10. Dartmouth researchers advance cellulosic ethanol production
11. Researchers develop new model for cystic fibrosis
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Sensing the infrared: Researchers improve IR detectors with single-walled carbon nanotubes
(Date:12/24/2014)... Dec. 23, 2014 Vermillion, Inc. (Nasdaq: ... gynecologic disease, announced today that investors including Oracle ... Fund LLC and several Vermillion directors have agreed ... of Vermillion,s common stock and warrants to purchase ... private placement.  Under the terms ...
(Date:12/22/2014)... (PRWEB) December 22, 2014 The ... global leader of technical training across the life sciences ... Data Management (SCDM) to provide the organization's members ... programs —providing access to the more than 350 sessions ... members with 10% off when registering for a ...
(Date:12/22/2014)... Calif. , Dec. 22, 2014  ( www.competitivehealth.com ... CoPatient, an online medical bill review and advocacy service, ... in the FREE WellCard Savings discount health services marketplace. ... bill that was more than they expected to pay. ... reduce health care costs, WellCard Savings is pleased to ...
(Date:12/19/2014)... Charm Sciences is pleased to announce that its ... M1 in raw commingled milk is the first lateral ... peer reviewed report of the validation by Technology and ... Fisheries Research (ILVO-T&V) has been published by the Taylor ... toxic aflatoxin and a known carcinogen, can be passed ...
Breaking Biology Technology:Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 2Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 3Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 4Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 5CfPIE Announces Partnership with the Society for Clinical Data Management 2CfPIE Announces Partnership with the Society for Clinical Data Management 3WellCard Savings Announces CoPatient Medical Bill Review Service for Members 2Charm Sciences Achieves Independent Validation of First 15 Minute Quantitative Screening Method for Aflatoxin M1 2
... William Heiser, Ph.D., Research ... Hercules, CA 94547, , ... We have found that the most ... distance and,microparticle size. Changing most other parameters, within a,broad range, ...
... A. Kimberley McAllister, Nina Tang, Lawrence C. Katz, and Donald ... Department of Neurobiology, Box 3209, Duke University Medical Center, , ... , Introduction ... cells and tissues of interest , remains a rate-limiting ...
... Katja Kapp, Werner Kunz, and Christoph G Grevelding,Institute for Genetics, Center of ... , Introduction ... parasitic helminths that cause bilharzia (schistosomiasis) , ... al.1997). , One focus of ...
Cached Biology Technology:Optimization of Biolistic Transformation Using the Helium-Driven PDS-1000/He System 2Optimization of Biolistic Transformation Using the Helium-Driven PDS-1000/He System 3Optimization of Biolistic Transformation Using the Helium-Driven PDS-1000/He System 4Optimization of Biolistic Transformation Using the Helium-Driven PDS-1000/He System 5Optimization of Biolistic Transformation Using the Helium-Driven PDS-1000/He System 6Optimization of Biolistic Transformation Using the Helium-Driven PDS-1000/He System 7Optimization of Biolistic Transformation Using the Helium-Driven PDS-1000/He System 8Optimization of Biolistic Transformation Using the Helium-Driven PDS-1000/He System 9Optimization of Biolistic Transformation Using the Helium-Driven PDS-1000/He System 10Optimization of Biolistic Transformation Using the Helium-Driven PDS-1000/He System 11Optimization of Biolistic Transformation Using the Helium-Driven PDS-1000/He System 12Optimization of Biolistic Transformation Using the Helium-Driven PDS-1000/He System 13Optimization of Biolistic Transformation Using the Helium-Driven PDS-1000/He System 14Optimization of Biolistic Transformation Using the Helium-Driven PDS-1000/He System 15Optimization of Biolistic Transformation Using the Helium-Driven PDS-1000/He System 16Optimization of Biolistic Transformation Using the Helium-Driven PDS-1000/He System 17Biolistic Transfection of Organotypic Brain Slices 2Biolistic Transfection of Organotypic Brain Slices 3Biolistic Transfection of Organotypic Brain Slices 4Biolistic Transfection of Organotypic Brain Slices 5Biolistic Transfection of Organotypic Brain Slices 6Biolistic Transfection of Organotypic Brain Slices 7Biolistic Transfection of Organotypic Brain Slices 8Biolistic Transfection of Organotypic Brain Slices 9Biolistic Transfection of Organotypic Brain Slices 10Biolistic Gene Transfer to Generate Transgenic Schistosomes, Rev A 2Biolistic Gene Transfer to Generate Transgenic Schistosomes, Rev A 3Biolistic Gene Transfer to Generate Transgenic Schistosomes, Rev A 4Biolistic Gene Transfer to Generate Transgenic Schistosomes, Rev A 5Biolistic Gene Transfer to Generate Transgenic Schistosomes, Rev A 6Biolistic Gene Transfer to Generate Transgenic Schistosomes, Rev A 7Biolistic Gene Transfer to Generate Transgenic Schistosomes, Rev A 8Biolistic Gene Transfer to Generate Transgenic Schistosomes, Rev A 9
(Date:12/10/2014)... -- You,ve been here before: you desperately need to sign ... site key or the answer to your secret question. What,s ... Today, Hoyos Labs , a digital infrastructure ... put an end to the frustration that comes with usernames, ... leverages a user,s smartphone to acquire his or her biometrics ...
(Date:12/10/2014)... Research and Markets ( http://www.researchandmarkets.com/research/xclcvw/biometrics_market ... "Biometrics Market in Japan 2014-2018" report to ... The integration of biometrics and ... and upgradation of the driver,s license is one ... Besides the aforementioned projects, biometrics is being used ...
(Date:12/4/2014)... Fla. , Dec. 3, 2014  Crossmatch™, ... today announced that its DigitalPersona ® Pro ... readers have been deployed throughout First Bank branch ... South Carolina and Virginia. First ... Southern Pines, North Carolina , ...
Breaking Biology News(10 mins):The Password is Finally Dead: Launch of 1U Mobile App Eliminates Need for All Usernames and Passwords 2The Password is Finally Dead: Launch of 1U Mobile App Eliminates Need for All Usernames and Passwords 3Biometrics Market in Japan 2014-2018: Key Vendors are DDS, Fujitsu, Hitachi and NEC 2First Bank Partners with Crossmatch to Increase Log In Security 2First Bank Partners with Crossmatch to Increase Log In Security 3
... launched a collaborative project to develop and evaluate new ... AvecNet is a five year, 12 million project ... the European Union,s Seventh Framework programme. Because malaria ... to combating the disease. Wide scale use of ...
... and the United Kingdom have been awarded funding ... process of biological photosynthesis. The U.S. National Science ... Sciences Research Council (BBSRC) collaborated in issuing these ... to use sunlight and carbon dioxide to produce ...
... a resident in Medical Genetics in the Department of ... Medical Center, in Stanford Calif., was honored as the ... Foundation Clinical Genetics Fellowship in Biochemical Genetics at the ... Canada. The objective of the Genzyme/ACMG Foundation Award ...
Cached Biology News:€12 million ($16.9 million) project to develop new tools for malaria control 2NSF announces new awards that will investigate more efficient ways to harvest sunlight 2NSF announces new awards that will investigate more efficient ways to harvest sunlight 3NSF announces new awards that will investigate more efficient ways to harvest sunlight 4
KAI 1 (G-2)...
Anti-Mouse Valpha 2 TCR, Purified (Clone B20.1) (rat IgG2a)...
Anti-OSMR Monoclonal Antibody Research Focus: cytokine/growth factor Storage: 4C Shipping Temperature: 4C...
... Yeast Cells are designed for use with ... cerevisiae strain MaV203 contains deletions in the ... with GAL4-based two-hybrid systems. The strain also ... of ProQuest bait and prey vectors. MaV203 ...
Biology Products: