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:7/28/2014)... The global market for biotechnology is ... to a new study by Grand View Research, Inc. ... effective vaccines and drugs in an attempt to improve ... expected to drive market demand over the next six ... via the use of genetically engineered seeds is expected ...
(Date:7/28/2014)... , July 28, 2014 Research and ... Particle Size Analysis Market 2014-2018" report to their offering. ... Particle size analysis is a technique used to determine the ... or liquid. It is crucial to analyze the size of ... Therefore, particle size analysis is performed to determine the behavior ...
(Date:7/25/2014)... 26, 2014 "Ischemic Stroke and ... provides data on the Ischemic Stroke and Cerebral ... information and data relating to the clinical trials ... full global Ischemic Stroke Research Report 2014 at: ... of the trial numbers and their recruitment status ...
(Date:7/25/2014)... by researchers from the University of Leicester has ... unlocking the potential to create new materials using ... been published in the prestigious academic journal ... technique to examine in rich detail the structure ... containing an acetylene molecule and a single helium ...
Breaking Biology Technology:Global Biotechnology Market Worth $604.40 Billion by 2020: Grand View Research, Inc 2Global Biotechnology Market Worth $604.40 Billion by 2020: Grand View Research, Inc 3Global Biotechnology Market Worth $604.40 Billion by 2020: Grand View Research, Inc 4Global Particle Size Analysis Market 2014-2018 2Ischemic Stroke and Cerebral Stroke Global Clinical Trials Review H2, 2014: MarketResearchReports.Biz 2Ischemic Stroke and Cerebral Stroke Global Clinical Trials Review H2, 2014: MarketResearchReports.Biz 3Breakthrough laser experiment reveals liquid-like motion of atoms in an ultra-cold cluster 2Breakthrough laser experiment reveals liquid-like motion of atoms in an ultra-cold cluster 3
... Fang-Fang Wu, Xuemei He, and David R Nau, Bio-Rad Laboratories, Inc., ... Introduction , ... that can be used for the efficient purification ... variety of expression systems. , The synthesis of IMAC ...
... , , ... is one of the key regulatory enzymes , of ... of phosphoenolpyruvate (PEP) to pyruvate and the phosphorylation of ADP , ... aerobic and anaerobic energy metabolism , in invertebrates, regulation ...
... important intracellular signals involved in the, ... factors.The discovery of a phosphatidylinositol, ... the inositol ring uncovered a new pathway ... Phosphoinositide 3-kinase has been purified to, ...
Cached Biology Technology:Rapid Method Development With the BioLogic DuoFlow Chromatography System for the Purification of His-Tagged Proteins 2Rapid Method Development With the BioLogic DuoFlow Chromatography System for the Purification of His-Tagged Proteins 3Rapid Method Development With the BioLogic DuoFlow Chromatography System for the Purification of His-Tagged Proteins 4Purification of Two Isoforms of Pyruvate Kinase from Nordic Krill Using an UNO Q1 Column, Rev A 2Purification of Phosphoinositide 3-Kinase With UNO Columns 2
(Date:7/28/2014)... Eight of the top 10 U.S. cities that have ... public inconveniences as frequent road closures, overwhelmed storm drains ... a new NOAA technical report. , This nuisance flooding, ... three U.S. coasts, between 300 and 925 percent since ... Nuisance Flood Frequency Changes around the United States, also ...
(Date:7/28/2014)... identified areas of the Earth that are high priorities ... Europe is particularly vulnerable, as it has the lowest ... of any continent in ,refugia, areas of biological ... remain relatively constant during times of great environmental change. ... in Scandinavia and Scotland. , The biggest refugia ...
(Date:7/28/2014)... Rice University researchers are using magnetic beads and DNA ... be used as microscale models for polymer macromolecules. , ... as theory in the 1950s, can be made as ... of interest to materials scientists who study the basic ... chemical and biomolecular engineer Sibani Lisa Biswal and graduate ...
Breaking Biology News(10 mins):NOAA: 'Nuisance flooding' an increasing problem as coastal sea levels rise 2NOAA: 'Nuisance flooding' an increasing problem as coastal sea levels rise 3Study finds Europe's habitat and wildlife is vulnerable to climate change 2Seeing is bead-lieving 2
... and Drug Administration approved a drug called BiDil as ... claiming in a press release that this was a ... Science, Politics and Big Business Re-create Race in the ... Kirkland & Ellis Professor at Northwestern University School of ...
... responses are some of the most studied behaviors by ... sensory information. The ability to evade predators plays a ... explore their environment to find food, find mates and ... to avoid predators, thereby increasing their chances for survival. ...
... over Niagara Falls. Pollution from fires in Ontario, Canada ... being measured by NASA,s Aqua satellite. One instrument ... two views of the pollution from the fires in ... flies onboard NASA,s Aqua and Terra satellites. MODIS has ...
Cached Biology News:Divided by race 2Elusive prey 2NASA measures wildfire pollution pour over Niagara Falls 2
Form: Ready to use Applications: ELISA...
Form: Ready to use Applications: ELISA...
ANTI S. GROUP AG:H...
Recorder REC-111 single-channel, 1. Category: Chromatography Systems & Accessories, Systems....
Biology Products: