Navigation Links
'Radio wave cooling' offers new twist on laser cooling
Date:9/14/2007

Visible and ultraviolet laser light has been used for years to cool trapped atomsand more recently larger objectsby reducing the extent of their thermal motion. Now, applying a different form of radiation for a similar purpose, physicists at the National Institute of Standards and Technology (NIST) have used radio waves to dampen the motion of a miniature mechanical oscillator containing more than a quadrillion atoms, a cooling technique that may open a new window into the quantum world using smaller and simpler equipment.

Described in a forthcoming issue of Physical Review Letters,* this demonstration of radio-frequency (RF) cooling of a relatively large object may offer a new tool for exploring the elusive boundary where the familiar rules of the everyday, macroscale world give way to the bizarre quantum behavior seen in the smallest particles of matter and light. There may be technology applications as well: the RF circuit could be made small enough to be incorporated on a chip with tiny oscillators, a focus of intensive research for use in sensors to detect, for example, molecular forces.

The NIST experiments used an RF circuit to cool a 200 x 14 x 1,500 micrometer silicon cantilevera tiny diving board affixed at one end to a chip and similar to the tuning forks used in quartz crystal watchesvibrating at 7,000 cycles per second, its natural resonant frequency. Scientists cooled it from room temperature (about 23 degrees C, or 73 degrees F) to -228 C (-379 F). Other research groups have used optical techniques to chill micro-cantilevers to lower temperatures, but the RF technique may be more practical in some cases, because the equipment is smaller and easier to fabricate and integrate into cryogenic systems. By extending the RF method to higher frequencies at cryogenic temperatures, scientists hope eventually to cool a cantilever to its ground state near absolute zero (-273 C or -460 F) , where it would be essentially motionless and quan
'/>"/>

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. The DIG System Nonradioactive Automated High-Throughput In Situ Hybridization: a Powerful Tool for Functional Genomics Research
2. The DIG System Nonradioactive and Highly Sensitive Detection of Nucleic Acids
3. A simple method to sequence from bacterial colonies using [a-33P] radiolabeled ddNTPs and Thermo Sequenase
4. Development of Radioligand Binding Assays for the Motilin Receptor Using ScreenReady Targets.
5. Georgia healthcare system to install GEs radio frequency ID
6. See how they run: Radio ads and Google
7. TomoTherapys 100th radiology system reaches public sector
8. Satellite radio can promote your national brand
9. Radiology advance points way to non-invasive brain-cancer treatment
10. Madison music featured on Internet radio station
11. Motorolas iRadio beams music through your cell phone
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/1/2015)... ... 01, 2015 , ... Leading CEOs, CSOs, CMOs, and heads ... join prominent academics and key investors for Neuro Advance Boston, October 14, 2015 ... , Neuro Advance Boston focuses on the latest developments and opportunities in ...
(Date:9/1/2015)... ... September 01, 2015 , ... Research conducted by ... Angeles, Boston University School of Medicine, Frederick National Laboratory for Cancer Research, and ... first multidisciplinary Open Access journal. , Christopher Ryan PhD, of Synedgen, and ...
(Date:8/31/2015)... ... August 31, 2015 , ... In recent years, biodegradable plastics ... low carbon footprints and compostability. These properties can help in limiting the degradation ... basis of applications, the market for biodegradable plastics can be broadly segmented into ...
(Date:8/31/2015)... Research and Markets ( http://www.researchandmarkets.com/research/cbgl72/middle_east_and ) has announced the ... Sensors Market - Growth, Trends & Forecasts (2014-2020)" ... Middle East & Africa Biomedical Sensors ... a CAGR of 3.26% over the period 2014-2020 ... are adaptable to the genetic formulation of each individual. ...
Breaking Biology Technology:Neuro Advance Boston Brings Together Leading Neuroscience Experts on October 14 at Harvard Medical School 2Synedgen’s Director for Pharmaceutical Manufacturing Publishes New Research 2Synedgen’s Director for Pharmaceutical Manufacturing Publishes New Research 3Biodegradable Plastics Market Growing at 10.8% CAGR to 2020 2Biodegradable Plastics Market Growing at 10.8% CAGR to 2020 3Biodegradable Plastics Market Growing at 10.8% CAGR to 2020 4Biodegradable Plastics Market Growing at 10.8% CAGR to 2020 5Middle East & Africa Biomedical Sensors Market Report 2015 - Growth, Trends & Forecasts to 2020 2
... , , , 7.6.4 Long PCR , ... as desired with every temperature , command, enables a , ... , With Long PCR, this function can be used ... elongation. , , ...
... , , , , , ... set of conditions that can be applied to all PCR amplifications. For ... used, the annealing temperatures , of the PCRs can differ ... stringent annealing temperature is a prerequisite for reliable results , ...
... , , , , ... fragment using the PCR* are an everyday occurrence in the lab. For example, , ... which hinder, , or even prevent, further analyses (cycle ... of the PCR result. In such cases, PCR , ...
Cached Biology Technology:PCR Optimization 2PCR Optimization 3Using Gradient PCR to determine the optimum annealing temperature. 2
(Date:8/12/2015)... , Aug. 12, 2015   MedNet Solutions ... the entire spectrum of clinical research, is proud to ... the company,s comprehensive SaaS-based eClinical technology platform, has led ... the first two quarters of 2015.   Q2 2015 ... largest quarters measured by contract value sold in the ...
(Date:8/10/2015)... BOSTON and TELTOW, Germany ... SensoMotoric Instruments (SMI), a world leader in Eye ... the completion of its OEM Eye Tracking Platform for ... Eye Tracking Platform contains reference designs for seamless integration ... kiosk systems, virtual reality HMDs and augmented reality smart ...
(Date:8/5/2015)... , August 5, 2015 According ... Access Management Market by Software, Services, Vertical (BFSI, Airport, IT ... Geography - Global Forecast to 2020", published by MarketsandMarkets, ... Market globally into various segments. The global PIAM Market ... to $546.2 Million by 2019, at a CAGR of ...
Breaking Biology News(10 mins):MedNet Solutions Experiences Explosive Corporate Growth 2SMI Completes OEM Eye Tracking Platform to Cover All Consumer Displays 2SMI Completes OEM Eye Tracking Platform to Cover All Consumer Displays 3Physical Identity and Access Management Market Worth $546.2 Million by 2019 2Physical Identity and Access Management Market Worth $546.2 Million by 2019 3Physical Identity and Access Management Market Worth $546.2 Million by 2019 4
... acetyl CoA carboxylase 2,or ACC2, appears to turn the ... in part why the animals can eat more and ... Medicine,researchers.,The report that appears online today in the Proceedings ... cells in these mice bred to lack ACC2," said ...
... University,of California, San Diego have invented a process ... of specialized cells being sought as possible,treatments for ... and Shu Chien, UCSD bioengineering professors, and Christopher,J. ... in a paper published in the February issue ...
... have discovered a way to overcome one of the ... kill normal cells in the,process of eradicating cancer cells.,In ... of the Proceedings of the,National Academy of Sciences (PNAS), ... into a specially designed,virus. The virus eradicated prostate cancer ...
Cached Biology News:Lack of enzyme turns fat cells into fat burners 2Priming embryonic stem cells to fulfill their promise 2Priming embryonic stem cells to fulfill their promise 3Columbia research lifts major hurdle to gene therapy for cancer 2