Navigation Links
Rice physicists discover ultrasensitive microwave detector
Date:12/8/2010

HOUSTON -- (Dec. 8, 2010) -- Physicists from Rice University and Princeton University have discovered how to use one of the information technology industry's mainstay materials -- gallium arsenide semiconductors -- as an ultrasensitive microwave detector that could be suitable for next-generation computers. The discovery comes at a time when computer chip engineers are racing both to add nanophotonic devices directly to microchips and to boost processor speeds beyond 10 gigahertz (GHz).

"Tunable photon-detection technology in the microwave range is not well-developed," said Rice physicist Rui-Rui Du, the study's lead author. "Single-photon detectors based on superconductors in the 10-GHz to 100-GHz range are available, but their resonance frequency has been difficult to tune. Our findings suggest that tunable single-photon detection may be within reach with ultrapure gallium arsenide."

The study, which is available online and due to appear in print this week in Physical Review Letters, is the latest result from a long-term collaboration between Du and Princeton University physicist Loren Pfeiffer, whose group produces the world's purest samples of gallium arsenide. For the new study, Rice graduate student Yanhua Dai cooled one of Pfeiffer's ultrapure samples to below 4 degrees Kelvin -- the temperature of liquid helium. She then bombarded the sample with microwaves while applying a weak magnetic field -- approximately the same strength as that of a refrigerator magnet. Du and Dai were surprised to find that microwaves of a specific wavelength resonated strongly with the cooled sample. They also found they could use the magnet to tune this resonance to specific microwave frequencies.

Du said previous experiments have typically measured weak resonance effects from microwaves. "A signal level of 1 percent is a common measurement. In our case, the change was a thousand times that much."

While the team does not yet understa
'/>"/>

Contact: Jade Boyd
jadeboyd@rice.edu
713-348-6778
Rice University
Source:Eurekalert

Page: 1 2

Related biology technology :

1. UC Riverside physicists pave the way for graphene-based spin computer
2. UBC, Max Planck formalize partnership among worlds top quantum physicists
3. Physicists capture first images of atomic spin
4. U-M physicists create first atomic-scale map of quantum dots
5. Physicists at UC Santa Barbara make discovery in quantum mechanics
6. NYU physicists find way to explore microscopic systems through holographic video
7. Nanophysicists find unexpected magnetic effect
8. Physicists discover important step for making light crystals
9. U of T physicists squeeze light to quantum limit
10. McGill physicists find a new state of matter in a transistor
11. Integrated Medical Systems Technology Recognized as Qualified Therapeutic Discovery
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/27/2015)... 27, 2015 HUYA Bioscience International (HUYA) today announced ... Japan Society of HTLV-1, held this week at the ... of the Society is to promote research on HTLV-1 ... medical technology and research related to these fields to ... "HUYA is proud to support this prestigious conference," said ...
(Date:8/27/2015)... ... August 27, 2015 , ... Inc. Magazine released its annual list ... as number 1,361 in growth for the three years through 2014. Being named to ... privately held organizations in the country. , “We are thrilled to make the ...
(Date:8/27/2015)... 27, 2015 In response to recent ... and The US Postal Service to no longer ... ,select agents, by the CDC, Marken reaffirmed today ... sensitive shipments. Marken uses its flexible ... and certified personnel to ensure the safe and ...
(Date:8/26/2015)... ... August 26, 2015 , ... MediVet ... a second US laboratory is to open in Manhattan, Kansas in early October, ... and long-term growth of research and development through collaboration with researchers from Kansas ...
Breaking Biology Technology:HUYA Bioscience International Sponsors Japan Society Of HTLV-1 Annual Meeting 2HUYA Bioscience International Sponsors Japan Society Of HTLV-1 Annual Meeting 3HUYA Bioscience International Sponsors Japan Society Of HTLV-1 Annual Meeting 4iLab Solutions Named to 2015 Inc. 5000 List 2iLab Solutions Named to 2015 Inc. 5000 List 3Marken Ensures Safe Transportation Of Select Agents And Toxins 2MediVet Biologics Animal Health Secures Additional Laboratory Facility in Manhattan, Kansas 2MediVet Biologics Animal Health Secures Additional Laboratory Facility in Manhattan, Kansas 3
... ... ... Writers Association named medical writer, Rita Buckley, Writer/Owner of medical writing firm ... received the awards for The Lehman Series Expert Panel on Weight Loss Surgery, published ...
... the ability of researchers to examine biological specimens, ... recent advances in X-ray diffraction methods have helped ... While significant progress has been made in ... techniques rely on fluorescent labeling technologies, which prohibit ...
... BioMed Realty Trust, Inc. (NYSE: BMR ) today announced that its ... per share of common stock, representing a 7.1% increase over the company,s first quarter ... annualized dividend of $0.60 per common share. , ... BioMed also announced that its board of directors has declared a dividend ...
Cached Biology Technology:Medical Writer Rita Buckley Wins Awards for Excellence in Medical Communication 2Medical Writer Rita Buckley Wins Awards for Excellence in Medical Communication 3Researchers use X-ray diffraction microscope to reveal 3-D internal structure of whole cell 2Researchers use X-ray diffraction microscope to reveal 3-D internal structure of whole cell 3BioMed Realty Trust Declares Second Quarter 2010 Common Stock and Preferred Stock Dividends 2BioMed Realty Trust Declares Second Quarter 2010 Common Stock and Preferred Stock Dividends 3
(Date:7/31/2015)... de 2015 La 10 th International Conference ... de BGI del 22 al 25 de octubre de 2015 en ... año, la conferencia celebra su décimo aniversario. Desde su inauguración ... de las reuniones anuales más influyentes del mundo en el ... dinámicas, entusiastas y mejores a nivel científico. ...
(Date:7/31/2015)... 2015 The 10 th International Conference on ... October 22-25, 2015, in Shenzhen , ... celebrating its 10 th anniversary this year. Since its inauguration ... influential annual meetings in the ,omics, fields, and is one ... ICG-10 focuses on recent breakthroughs and advances in ...
(Date:7/27/2015)... ANGELES , July 27, 2015   ... evidence- and experience-based clinical improvement solutions, today announced ... solution is now available on Android smartphones and ... inpatient and post-care organizations can use ZynxCarebook to ... same patient,s condition, streamline care transitions to other ...
Breaking Biology News(10 mins):La 10th International Conference on Genomics (ICG-10) se llevará a cabo en octubre 2La 10th International Conference on Genomics (ICG-10) se llevará a cabo en octubre 3The 10th International Conference on Genomics (ICG-10) to Open in October 2Zynx Health Adds Android Device Support to ZynxCarebook Solution 2Zynx Health Adds Android Device Support to ZynxCarebook Solution 3
... HOUSTON African-American adults living closer to a fast food ... who lived further away from fast food, according to researchers ... this association was particularly strong among those with a lower ... American Journal of Public Health indicates higher BMI ...
... endothelium, the cellular layer lining the body,s blood ... hundred nanometers in thickness, this super-tenuous structure routinely ... compression to create a unique and highly dynamic ... tissues from the body,s circulatory system. It,s ...
... has discovered an ancient extinct creature with ,scissor hand-like, claws ... his favourite movie star. The 505 million year ... which is a distant ancestor of lobsters and scorpions, was ... as Edward Scissorhands - a movie about an artificial man ...
Cached Biology News:Body mass index of low income African-Americans linked to proximity of fast food restaurants 2Body mass index of low income African-Americans linked to proximity of fast food restaurants 3Endothelium, heal thyself 2Endothelium, heal thyself 3Endothelium, heal thyself 4Actor Johnny Depp immortalized in ancient fossil find 2