Navigation Links
Researchers putting a freeze on oscillator vibrations
Date:6/17/2009

University of Oregon physicists have successfully landed a one-two punch on a tiny glass sphere, refrigerating it in liquid helium and then dosing its perimeter with a laser beam, to bring its naturally occurring mechanical vibrations to a near standstill.

The findings, published in Nature Physics, could boost advances in information processing that exploits special quantum properties and in precision-measurements for nanotechnology. The ability to freeze mechanical fluctuations, or vibrations, with a laser in so-called optomechanical oscillators, also opens a window on the little-explored transition between quantum and classical physics, said principal investigator Hailin Wang.

Wang, a member of the Oregon Center for Optics and a professor in the UO physics department, and his doctoral student Young-Shin Park performed the research under grants from the National Science Foundation and Army Research Laboratory through the Oregon Nanoscience and Microtechnologies Institute (ONAMI).

In nanotechnology, understanding phonons -- vibrations that carry energy -- is becoming increasingly important. For their project, Wang and Park purposely manufactured a deformed silica microsphere about 30 microns in diameter, about the size of a human hair.

A combination of cryogenic pre-cooling of the sphere to 1.4 Kelvin (minus 457.15 degrees Fahrenheit) and hitting the sphere's outer surface with a laser allowed researchers to extract energy from the mechanical oscillator and lower the level of phonon excitations to near 40 quanta. Ultimately, Wang said, the goal is to reduce that level, known as the average phonon occupation, to one quantum.

"Our goal is to get to and work with the quantum mechanical ground state in which there is very little excitation or displacement," Wang said. Reaching one quantum would require a temperature just a few thousandths of a degree from absolute zero (minus 459.67 degrees Fahrenheit).


'/>"/>

Contact: Jim Barlow
jebarlow@uoregon.edu
541-346-3481
University of Oregon
Source:Eurekalert  

Page: 1

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:
Researchers putting a freeze on oscillator vibrations
(Date:1/14/2014)... (PRWEB) January 14, 2014 Histogen, Inc., ... products of cells grown under simulated embryonic conditions, today ... agreement with Suneva Medical, Inc. for physician-dispensed aesthetic products ... , This agreement is an amendment to the ...
(Date:1/14/2014)... New York, NY (PRWEB) January 14, 2014 ... coverage of Alliqua, Inc. (OTCQB: ALQA). Alliqua is an ... products to serve the wound care market. , Free ... Alliqua was restructured with a seasoned management team and ...
(Date:1/14/2014)... 14, 2014 iLab Solutions, the leader in ... new Director of Product Strategy. In this role, Michelle will ... sub-teams to guide in the development of iLab products. Her ... maximum possible benefit to the scientific community by offering the ...
(Date:1/14/2014)... January 14, 2014 Global Record ... innovative information technology solutions for patients, physicians, the ... stakeholders, announced today the signing of a three-year ... and Drug Administration (FDA). This initiative is ...
Breaking Biology Technology:Histogen and Suneva Medical Expand License for Cell Conditioned Media-based Aesthetic Products Internationally 2Histogen and Suneva Medical Expand License for Cell Conditioned Media-based Aesthetic Products Internationally 3EquitiesIQ Initiates Coverage of Alliqua, Inc. 2EquitiesIQ Initiates Coverage of Alliqua, Inc. 3iLab Solutions Announces Michelle Detwiler as the New Director of Product Strategy 2Global Record Systems Announces Research Collaboration Agreement with FDA to Create a Novel “Big Data” Paradigm for Collection of Patient Safety and Outcomes Information 2
... Highlighted by Cinryze(TM) [C1 Inhibitor (human)] Commercial Launch --EXTON, Pa., ... reported today its financial results for the fourth quarter and ... include:Operational: , , , ... Inc. (Lev) in October 2008; , ...
... Feb. 24 Mach One Corporation (Pink Sheets: MNCN), ... purchase of Ceres Organic Harvest, Inc. an organic grain ... feed and dairy industries. Ceres Organic Harvest had 2008 ... the stock of Ceres for $8 million in a ...
... (USA) Inc ("MINDSET") a company privately held by MPM ... received a Notice of Allowance in Europe related to ... for the prevention and treatment of memory loss. Drugs ... been approved for the treatment of type II diabetes ...
Cached Biology Technology:ViroPharma Incorporated Reports Fourth Quarter and Full Year 2008 Financial Results 2ViroPharma Incorporated Reports Fourth Quarter and Full Year 2008 Financial Results 3ViroPharma Incorporated Reports Fourth Quarter and Full Year 2008 Financial Results 4ViroPharma Incorporated Reports Fourth Quarter and Full Year 2008 Financial Results 5ViroPharma Incorporated Reports Fourth Quarter and Full Year 2008 Financial Results 6ViroPharma Incorporated Reports Fourth Quarter and Full Year 2008 Financial Results 7ViroPharma Incorporated Reports Fourth Quarter and Full Year 2008 Financial Results 8ViroPharma Incorporated Reports Fourth Quarter and Full Year 2008 Financial Results 9ViroPharma Incorporated Reports Fourth Quarter and Full Year 2008 Financial Results 10ViroPharma Incorporated Reports Fourth Quarter and Full Year 2008 Financial Results 11ViroPharma Incorporated Reports Fourth Quarter and Full Year 2008 Financial Results 12Mach One Corporation Completes Acquisition of Ceres Organic Harvest, Inc. 2Mindset BioPharmaceuticals (USA) Inc Obtains Notice of Allowance for European Patent Related to Use of Insulin Sensitizers in Senile Dementia, Dementia and Memory Loss 2Mindset BioPharmaceuticals (USA) Inc Obtains Notice of Allowance for European Patent Related to Use of Insulin Sensitizers in Senile Dementia, Dementia and Memory Loss 3
(Date:4/16/2014)... The "brush border" a densely packed array of ... the cells that line our intestines., Vanderbilt University researchers ... structure, which is critical for absorbing nutrients and defending ... journal Cell , reveal a role for adhesion ...
(Date:4/16/2014)... thoughts and feelings are the result of neurons talking ... of the conversations might not be all that private. Brain ... even participating in, some of those discussions. But a new ... part of the time specifically, when the neurons get ...
(Date:4/16/2014)... to conquer the world? Surprisingly, bacteria also face this ... now shown how these organisms should decide how best ... subtilis is quite adaptable. It moves about in ... Alternatively, it can stick to an underlying substrate. Actually, ...
Breaking Biology News(10 mins):Vanderbilt researchers discover how intestinal cells build nutrient-absorbing surface 2Vanderbilt researchers discover how intestinal cells build nutrient-absorbing surface 3Eavesdropping on brain cell chatter 2Eavesdropping on brain cell chatter 3Theoretical biophysics: Adventurous bacteria 2
... German . , Tobias Brgmann and his colleagues from the ... for their experiments, which is a type of light sensor. At ... the cell membrane. When stimulated with blue light, this channel opens, ... in the cell membrane,s pressure, which stimulates cardiac muscle cells to ...
... towards the poles almost everywhere in the world, except ... and snails Steffen Kiel and Sven Nielsen at the ... pattern originated at the end of the last ice ... created a mosaic landscape of countless islands, bays and ...
... rich in walnuts and walnut oil may prepare the body ... Penn State researchers who looked at how these foods, which ... stress., Previous studies have shown that omega-3 fatty acids -- ... seeds -- can reduce low density lipoproteins (LDL) -- bad ...
Cached Biology News:Bonn researchers use light to make the heart stumble 2Disappearing glaciers enhanced biodiversity 2Walnuts, walnut oil, improve reaction to stress 2Walnuts, walnut oil, improve reaction to stress 3
Request Info...
... Source: E. coli containing a clone of ... Description: Topoisomerase II alters the topological state ... helix through a transient break which generates a ... of its double-stranded DNA passage mechanism, the enzyme ...
Request Info...
Shake 'n' Stack Oven - New Model (includes 10 bottle capacity rotisserie, adjustable feet, drip tray, manual PLUS Shaker Platform)...
Biology Products: