Navigation Links
NIST's 'nanotubes on a chip' may simplify optical power measurements
Date:1/25/2013

The National Institute of Standards and Technology (NIST) has demonstrated a novel chip-scale instrument made of carbon nanotubes that may simplify absolute measurements of laser power, especially the light signals transmitted by optical fibers in telecommunications networks.

The prototype device, a miniature version of an instrument called a cryogenic radiometer, is a silicon chip topped with circular mats of carbon nanotubes standing on end.* The mini-radiometer builds on NIST's previous work using nanotubes, the world's darkest known substance, to make an ultraefficient, highly accurate optical power detector,** and advances NIST's ability to measure laser power delivered through fiber for calibration customers.***

"This is our play for leadership in laser power measurements," project leader John Lehman says. "This is arguably the coolest thing we've done with carbon nanotubes. They're not just black, but they also have the temperature properties needed to make components like electrical heaters truly multifunctional."

NIST and other national metrology institutes around the world measure laser power by tracing it to fundamental electrical units. Radiometers absorb energy from light and convert it to heat. Then the electrical power needed to cause the same temperature increase is measured. NIST researchers found that the mini-radiometer accurately measures both laser power (brought to it by an optical fiber) and the equivalent electrical power within the limitations of the imperfect experimental setup. The tests were performed at a temperature of 3.9 K, using light at the telecom wavelength of 1550 nanometers.

The tiny circular forests of tall, thin nanotubes called VANTAs ("vertically aligned nanotube arrays") have several desirable properties. Most importantly, they uniformly absorb light over a broad range of wavelengths and their electrical resistance depends on temperature. The versatile nanotubes perform three dif
'/>"/>

Contact: Laura Ost
laura.ost@nist.gov
303-497-4880
National Institute of Standards and Technology (NIST)
Source:Eurekalert  

Page: 1 2

Related biology technology :

1. Karyopharm Therapeutics Announces Oral Presentation at the American College of Rheumatology (ACR) on the use of Selective Inhibitors of Nuclear Export (SINE) CRM1 Antagonists in preclinical models of Systemic Lupus Erythematosus (SLE)
2. New biosensor benefits from melding of carbon nanotubes, DNA
3. Scientists solve mystery of colorful armchair nanotubes
4. Perfect nanotubes shine brightest
5. Carbon nanotubes can double growth of cell cultures important in industry
6. Sensing the infrared: Researchers improve IR detectors with single-walled carbon nanotubes
7. Unzipped carbon nanotubes could help energize fuel cells and batteries, Stanford scientists say
8. Stanford engineers perfecting carbon nanotubes for highly energy-efficient computing
9. Strengthening fragile forests of carbon nanotubes for new MEMS applications
10. Low-resistance connections facilitate multi-walled carbon nanotubes for interconnects
11. USC scientists clone carbon nanotubes to unlock their potential for use in electronics
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
NIST's 'nanotubes on a chip' may simplify optical power measurements
(Date:5/21/2015)...  Prima Biomed Ltd. (NASDAQ: PBMD ) a ... a leader in the development of immunotherapeutic products for ... CVac data from the Phase II CAN-003 ovarian cancer ... clinically meaningful improvement in Overall Survival ("OS") over standard ... In the group of second remission patients (n=20), the ...
(Date:5/21/2015)... , May 21, 2015 ... inner feelings - and those of others. Being able ... senses. Analyze and read people to anticipate their thoughts ... your deepest emotions and feelings to create unique abstract ... of responsive games. Get inside a first-person-shooter as it ...
(Date:5/21/2015)... 21, 2015  CytRx Corporation (NASDAQ: CYTR ... in oncology, today announced positive updated results from ... for the treatment of unresectable glioblastoma multiforme (GBM), ... multisite trial is designed to investigate the preliminary ... tumors have progressed following prior treatment with surgery, ...
(Date:5/21/2015)... /PRNewswire/ - RepliCel Life Sciences Inc. (TSX.V: RP) ... focused on the development of autologous cell therapies, ... International Society for Cellular Therapy (ISCT) on RepliCel,s ... in a Phase 1/2 clinical trial.  The presentation, ... 5:30 PM to 7:00 PM local time, will ...
Breaking Biology Technology:Correction Continues after Big Move - BrokerBank Securities, Inc. 25 Days to Meet ARGUS - The World's First Contactless Emotions Scanner 2CytRx Reports Positive Updated Phase 2 Aldoxorubicin Clinical Trial Results in Glioblastoma Multiforme (Brain Cancer) 2CytRx Reports Positive Updated Phase 2 Aldoxorubicin Clinical Trial Results in Glioblastoma Multiforme (Brain Cancer) 3CytRx Reports Positive Updated Phase 2 Aldoxorubicin Clinical Trial Results in Glioblastoma Multiforme (Brain Cancer) 4CytRx Reports Positive Updated Phase 2 Aldoxorubicin Clinical Trial Results in Glioblastoma Multiforme (Brain Cancer) 5CytRx Reports Positive Updated Phase 2 Aldoxorubicin Clinical Trial Results in Glioblastoma Multiforme (Brain Cancer) 6CytRx Reports Positive Updated Phase 2 Aldoxorubicin Clinical Trial Results in Glioblastoma Multiforme (Brain Cancer) 7RepliCel to Present Unique Autologous Cell Treatment for Achilles Tendinosis at International Society for Cellular Therapy Conference 2RepliCel to Present Unique Autologous Cell Treatment for Achilles Tendinosis at International Society for Cellular Therapy Conference 3
... BioMarin Pharmaceutical,Inc. (Nasdaq: BMRN ) announced ... for the Riquent(R) Phase 3 ASPEN trial, the ... of the trial is,futile. BioMarin and partner ... unblind the data and evaluate all of the ...
... announced a vibrant new addition today to their dynamic ... Maine, was unanimously elected by the Board to fill ... successful biotechnology professional with 20 years of experience in ... career accomplishments that include establishing and launching successful business ...
... IdeasProject.com, Nokia,s new website, which provides innovative ways to interact with ... , ... San Francisco, CA (PRWEB) February 12, 2009 ... of genetic testing service 23andme, says that as we further our ...
Cached Biology Technology:Results of First Interim Efficacy Analysis for Riquent Phase 3 ASPEN Trial: Continuation of the Trial is Futile 2Results of First Interim Efficacy Analysis for Riquent Phase 3 ASPEN Trial: Continuation of the Trial is Futile 3SenesTech, Inc. Appoints Susan Airhart to Board of Directors 2Famed IT Investor and Director of 23andme Esther Dyson Identifies on IdeasProject.com Genetic Information as an Extremely Disruptive Force 2Famed IT Investor and Director of 23andme Esther Dyson Identifies on IdeasProject.com Genetic Information as an Extremely Disruptive Force 3
(Date:5/19/2015)... Fingerprint Cards (FPC) has received an ... and FPC1035 from one if its module partners. Deliveries are ... 2015 and the sensors will be used by smartphone manufacturers ... 2015 hereby amount to 740 MSEK to date. In addition ... and a number of smaller orders not separately communicated amounting ...
(Date:5/19/2015)... 19, 2015 Research ... addition of the  "Genetic Testing Market Outlook ... http://photos.prnewswire.com/prnh/20130307/600769) , ,A recent report, Genetic Testing ... of the current and future genetic testing ... their working principles and types are covered ...
(Date:5/14/2015)... , May 14, 2015 Research and Markets ... of the "Fingerprint Sensors Market in Smart Mobile ... This report believes that 2014 was a watershed year ... Apple,s introduction of ,Apple Pay,. Apple gave fingerprint sensors ... mobile payment service. Fingerprint sensors are a must-have feature ...
Breaking Biology News(10 mins):Fingerprint Cards Receives Touch Fingerprint Sensor Order of SEK 230 Million and Raises Revenue Guidance for 2015 2Global Genetic Testing Market Outlook 2018 2Global Smart Mobile Devices Fingerprint Sensors Market 2015-2019: Key Vendors are Authentec, Validity Sensors, Fingerprint Cards, Next Biometrics Group. IDEX, and Qualcomm 2
... (August 28, 2013) In the United States there are ... undiagnosed because for some athletes, the fear of being benched ... no objective test available to accurately diagnose concussions on the ... set out to change that. , A team led ...
... over time and die. In many organs, like the small ... function by replacing old cells with new ones. Learning ... understand exactly how our organs are built, and why some ... New work from Carnegie,s Alexis Marianes and Allan Spradling used ...
... taller people also tend to be slightly smarter is due ... both traits and taller people are more likely than average ... study led by the University of Colorado Boulder. ... the connection between being taller and being smarter, both traits ...
Cached Biology News:Combating concussions 2Combating concussions 3Why are some cells more cancer prone? 2CU study relies on twins and their parents to understand height-IQ connection 2CU study relies on twins and their parents to understand height-IQ connection 3
...
... T7 Phage Capture Plate is a 96-well ELISA-compatible ... the T7 Tail Fiber Monoclonal Antibody is immobilized ... The antibody specifically recognizes the tail fiber protein ... has a capacity of 10 9 phage ...
... TRAPeze RT Telomerase Detection Kit ... vitro assay for the fluorometric ... of telomerase activity. It incorporates ... assay and adds the ability ...
... The expertise that made the original Gene Pulser ... system available has been applied in the Gene ... The modular design of the Gene Pulser II ... accessory that has the widest range of settings ...
Biology Products: