Navigation Links
Rice researchers take molecule's temperature
Date:12/13/2010

You can touch a functioning light bulb and know right away that it's hot. Ouch! But you can't touch a single molecule and get the same feedback.

Rice University researchers say they have the next best thing -- a way to determine the temperature of a molecule or flowing electrons by using Raman spectroscopy combined with an optical antenna.

A new paper from the lab of Douglas Natelson, a Rice professor of physics and astronomy, details a technique that measures the temperature of molecules set between two gold nanowires and heated either by current applied to the wires or laser light. The paper was published this week in the online edition of Nature Nanotechnology.

Natelson, postdoctoral research associate Dan Ward and their colleagues found that while measuring heat at the nanoscale can be much more complicated than taking the temperature of macro objects, it can be done with a level of accuracy that will be of interest to the molecular electronics community or anyone who wants to know how heating and dissipation work at very small scales.

"When you get down to making small electronic devices or tiny junctions, you have to worry about how energy ends up in the form of heat," Natelson said. "In the case of macroscopic objects, like the filament in a light bulb, you can attach a thermocouple -- a thermometer -- and measure it." When light bulbs get hot, they also glow. "If you look at the spectrum of the light coming out, you can figure out how hot it is," he said.

That's an over-simplified version of what Natelson and Ward are doing. One can't see the glow of a molecule. However, the researchers can send in light as a probe and detect the wavelength of the light that molecule is returning when heated. "In Raman scattering, you send in light that interacts with your target. When it comes back, it will either have more energy than you put in, or the same, or less. And we can see that and figure out the effective
'/>"/>

Contact: David Ruth
druth@rice.edu
713-348-6327
Rice University
Source:Eurekalert

Page: 1 2 3

Related biology technology :

1. Understanding the science of solar-based energy: more researchers are better than one
2. Researchers decode viral process that prepares cells for HIV infection
3. Dartmouth researchers advance cellulosic ethanol production
4. Researchers develop new model for cystic fibrosis
5. Use it or lose it? Researchers investigate the dispensability of our DNA
6. Sigma-Aldrich and the University of Illinois Offer New Boronic Acid Surrogates to Researchers Worldwide Through Licensing Agreement
7. Researchers write protein nanoarrays using a fountain pen and electric fields
8. Researchers show how to stamp nanodevices with rubber molds
9. The Lancets New Online Medical Journal Helps Clinicians and Medical Researchers Find Practice-Changing Evidence Quickly and Easily
10. Ultrafast lasers give CU-Boulder researchers a snapshot of electrons in action
11. VAP(R) Cholesterol Test Helps Researchers Identify Treatment Effects of Combination Therapy
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/22/2014)... and HONG KONG , ... rare disease therapeutics enterprise, announced today that rare disease ... company as vice president, research. Dr. McKew brings more ... key leadership positions at the National Institutes of Health, ... acquisition by Wyeth). Dr. McKew will lead aTyr,s efforts to ...
(Date:10/20/2014)... GUELPH, ON , Oct. 20, 2014 /PRNewswire/ - BIOREM Inc. ... totalling $1.7 million which brings Q3 orders to $5.8 million and ... odour control projects in North America and ... "We continue to bid new projects at record levels," said ... values were higher at the end of Q3 than they have ...
(Date:10/20/2014)... October 20, 2014 Earle ... LLC, announced today that Ellen Teplitzky, an experienced ... for the pharmaceutical industry, has joined the firm ... its legal services practice. NDA Partners provides ... witness and testimony, to top law firms and ...
(Date:10/19/2014)... The Asia-Pacific Bromine Market report defines ... analysis and forecast of revenue. , Browse through ... report, to get an idea of the in-depth ... the segmentation in the Asia-Pacific bromine market, and ... , http://www.micromarketmonitor.com/market/asia-pacific-bromine-6741503144.html , Bromine is a ...
Breaking Biology Technology:aTyr Pharma Appoints John C. McKew, Ph.D., as Vice President, Research 2aTyr Pharma Appoints John C. McKew, Ph.D., as Vice President, Research 3NDA Partners Appoints Ellen Teplitzky, JD as Director of its Legal Services Practice 2The Asia-Pacific Bromine Market is estimated to grow to $4,080.1 million by 2018 - New Report by MicroMarket Monitor 2The Asia-Pacific Bromine Market is estimated to grow to $4,080.1 million by 2018 - New Report by MicroMarket Monitor 3
... , CALGARY and BLENHEIM, Ontario, Nov. 24 Dow AgroSciences ... Seeds, a division of Thompsons Limited of Blenheim, Ontario. The ... seeds business as the company anticipates the introduction of ... AgroSciences Herbicide Tolerant Trait Technology in corn in 2012. The ...
... , SHANGHAI, Nov. 24 ... Trademark Office (PTO) has allowed the patent application for,its ... NOD technology is a highly efficient approach ... oral delivery of drugs,otherwise administered as injections. NOD technology ...
... , , Primary efficacy endpoint has ... recurrent endometrial cancer, , QUEBEC CITY, Nov. 24 /PRNewswire-FirstCall/ - ... "Company"), a global biopharmaceutical company focused on endocrine therapy and ... study with its targeted cytotoxic peptide conjugate, AEZS-108 (formerly AN-152), ...
Cached Biology Technology:Dow AgroSciences Canada Announces Agreement to Acquire Hyland Seeds 2Dow AgroSciences Canada Announces Agreement to Acquire Hyland Seeds 3AEterna Zentaris Announces Positive Results for Phase 2 Study with LHRH-Receptor Targeted Cytotoxic Conjugate AEZS-108 in Endometrial Cancer 2AEterna Zentaris Announces Positive Results for Phase 2 Study with LHRH-Receptor Targeted Cytotoxic Conjugate AEZS-108 in Endometrial Cancer 3AEterna Zentaris Announces Positive Results for Phase 2 Study with LHRH-Receptor Targeted Cytotoxic Conjugate AEZS-108 in Endometrial Cancer 4
(Date:10/18/2014)... October 2014 Psychological stress and stress-related psychiatric disorders ... diseases, but the molecular mechanisms underlying this ... contribute to the development of targeted preventive ... these devastating diseases. This work is presented ... in Berlin., Now an international group of ...
(Date:10/17/2014)... the University of Copenhagen have shown for the first ... of Cystic fibrosis patients, giving them the opportunity to ... chronic infections. , The study also discovered the bacterial ... patients was halted or slowed down by the immune ... the oxygen and helped "suffocate" the bacteria, forcing the ...
(Date:10/16/2014)... on how the bowel lining develops and, in the ... starts. , The researchers produced evidence that stem cells ... are a feature of the bowel lining, and believe ... a controversial finding as scientists are still divided on ... Dr Chin Wee Tan and Professor Tony Burgess from ...
Breaking Biology News(10 mins):Researchers find why depression and aging linked to increased disease risk 2Scientists opens black box on bacterial growth in cystic fibrosis lung infection 2Cryptic clues drive new theory of bowel cancer development 2
... Today sees the launch of Ensembl Plants ... research by the European Molecular Biology Laboratory,s ... Cold Spring Harbor Laboratory, USA. Ensembl Plants allows ... of genome-scale experiments in different plant species. By ...
... good, more must be better, right? Wrong! New research published ... shows that vitamin A plays a crucial role in energy ... has a complex negative effect on our bodies. This is ... supplements containing added vitamin A make an overdose more possible ...
... calorie intake or glance over nutritional information on food packages, ... Dr. Susan Nelson, a veterinarian and assistant professor of clinical ... to follow when feeding your pet to ensure that it ... cat and dog food packages contain nutritional information, Nelson said. ...
Cached Biology News:New portal for plant genomics will support research into improved crops 2Too much of a good thing? Scientists explain cellular effects of vitamin A overdose and deficiency 2Owners should count calories for obese pets, consider several factors for good health 2Owners should count calories for obese pets, consider several factors for good health 3
... I, Wild Type Liquid. In 100 ... 200 µM EDTA, 20% glycerol, pH 7.9. AVOID ... is a monomeric protein of 765 amino acids ... relaxation of both positive and negative supercoiled DNAs ...
Request Info...
... in a 3'-> 5' direction from a ... of single-stranded DNA. Under defined reaction conditions, ... a uniform rate yielding predictable and reproducible ... of deoxyribonucleotides by Exonuclease III is dependent ...
... an endoribonuclease, the RNA strand of ... origin, e.g. that of phage FX174, ... x poly(dT). RNase H produces ribonucleotides ... no activity is detected with polyribonucleotides ...
Biology Products: