Navigation Links
New spectroscopy method could lead to better optical devices
Date:3/5/2013

PROVIDENCE, R.I. [Brown University] A multi-university research team has used a new spectroscopic method to gain a key insight into how light is emitted from layered nanomaterials and other thin films.

The technique, called energy-momentum spectroscopy, enables researchers to look at the light emerging from a thin film and determine whether it is coming from emitters oriented along the plane of the film or from emitters oriented perpendicular to the film. Knowing the orientations of emitters could help engineers make better use of thin-film materials in optical devices like LEDs or solar cells.

The research, published online on March 3 in Nature Nanotechnology, was a collaborative effort of Brown University, Case Western Reserve University, Columbia University, and the University of CaliforniaSanta Barbara.

The new technique takes advantage of a fundamental property of thin films: interference. Interference effects can be seen in the rainbow colors visible on the surface of soap bubbles or oil slicks. Scientists can analyze how light constructively and destructively interferes at different angles to draw conclusions about the film itself how thick it is, for example. This new technique takes that kind of analysis one step further for light-emitting thin films.

"The key difference in our technique is we're looking at the energy as well as the angle and polarization at which light is emitted," said Rashid Zia, assistant professor of engineering at Brown University and one of the study's lead authors. "We can relate these different angles to distinct orientations of emitters in the film. At some angles and polarizations, we see only the light emission from in-plane emitters, while at other angles and polarizations we see only light originating from out-of-plane emitters."

The researchers demonstrated their technique on two important thin-film materials, molybdenum disulfide (MoS2) and PTCDA. Each represents
'/>"/>

Contact: Kevin Stacey
kevin_stacey@brown.edu
401-863-3766
Brown University
Source:Eurekalert  

0

GOOD

Page: 1 2 3

Related biology technology :

1. Chemical Imaging Spectroscopy is the Focus for Pittcon 2013 Waters Symposium
2. Elsevier Announces the Launch of a New Journal: Methods in Oceanography
3. Rigaku Publishes EDXRF Method for Iron in Ore Materials
4. Rigaku Announces Method for Quantitative Elemental Analysis of Low-Alloy Steel with the Rigaku ZSX Primus III+ WDXRF Spectrometer
5. University of Colorado Cancer Center Study Shows the Preferred Feeding Method is not the Medically Best in Malnourished Pediatric Cancer Patients
6. Rigaku publishes new WDXRF Application: Determination of Metals in Copper Concentrate by Advanced Correction Method for Fused Beads
7. Unusual Method on How to Get Rid of Bed Bugs Without Pesticides Has Been Released To The Public, MyCleaningProducts.com Explains
8. Rigku Publishes New Method for Quantitative Analysis of Cast Iron Using the ZSX Primus III+
9. Rigaku Publishes method for Determination of Sulfur in Bio-gasoline
10. Kitware to Develop Novel Neuroimage Processing Methods for Traumatic Brain Injury
11. What Is The Best Flea Control Method? MyCleaningProducts.com Exposes The Truth
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New spectroscopy method could lead to better optical devices
(Date:5/23/2013)... Z Trim Holdings, Inc. (OTC Markets: ZTHO), ... of industries, announced that Chef Erin Ryan ... year,s National Restaurant Association ("NRA") NRA Show, which was ... Research Chefs Association.  Chef Ryan spoke on the subject ... and the Ugly," joining four other prestigious panelists including: ...
(Date:5/23/2013)... , May 23, 2013 Pressure BioSciences, ... that the Company will host a teleconference to discuss ... a business update. The teleconference information is provided below: ... a.m. Eastern Daylight Time (EDT) Dial-in: (800) ... (302) 607-2001 (Int,l) Passcode: VS22823 For those ...
(Date:5/23/2013)... 2013 Pusan National University Yangsan Hospital, ... and contract research company focused on research and ... today a publication reporting the induction of functional ... and immunotherapeutic vaccinia JX-594 (pexastimogene devacirepvec; Jennerex Inc.). ... the May 15 th , 2013 issue of ...
(Date:5/23/2013)... Bed bugs already cost Alton Housing Authority thousands. And as ... from kmov.com suggested that the said office might need to ... be of help, My Cleaning Products gave tips how to ... service. , The report, which was posted on May ... $35,000 for bed bug elimination, My Cleaning Products shared. ...
Breaking Biology Technology:Z Trim's Chef Erin Ryan sits on Expert Panel at NRA Show 2Z Trim's Chef Erin Ryan sits on Expert Panel at NRA Show 3Pressure BioSciences, Inc. to Discuss First Quarter 2013 Financial Results and Provide Business Update 2Pusan National University Announces Science Translational Medicine Publication Highlighting Landmark Demonstration of Functional Anti-Cancer Antibody Induction in Patients Following JX-594 Treatment 2Pusan National University Announces Science Translational Medicine Publication Highlighting Landmark Demonstration of Functional Anti-Cancer Antibody Induction in Patients Following JX-594 Treatment 3Bed Bug Exterminator Service Could Cost AHA $250K, My Cleaning Products Gives Tips How to Save Apartments from Costly Bed Bug Treatment 2
... rate, we wont have enough power in 15 years, according ... a 2.5 percent growth rate, if we dont build more ... lights on in 15 years, especially in this state, said ... Ph.D, assistant professor of engineering physics at the University of ...
... and executives are reporting that there are early indications ... of 2003, which provides the necessary first steps for ... Haroldson, chief technology officer for CUNA Mutual Group said, ... regularly with technology vendors, and over the last year ...
... is experiencing problems with the SoBIG.F e-mail virus ... spread. This virus and others, which have ravaged computers ... has affected the e-mail operations for all users. UW-Madison ... at the height of the virus problem. , ,The ...
Cached Biology Technology:Software Company Tackles Energy Shortage Issues 2IT Spending to Increase in Second Half of 2003 2IT Spending to Increase in Second Half of 2003 3IT Spending to Increase in Second Half of 2003 4IT Spending to Increase in Second Half of 2003 5UW-Madison Battles Prolific Computer Virus 2
(Date:5/23/2013)... more than 284 million tons of cargo, transit the Panama ... fees for the Panama Canal Authority. Each time a ship ... used from Gatun Lake, which is also a source of ... , However, the advent of very large "super" cargo ... sea, has demanded change. The Panama Canal is being expanded ...
(Date:5/23/2013)... cancer patients unnecessarily undergo surgery or harsh treatments ... slow-growing and aggressive forms of the disease. Researchers ... Medical Institutes are developing technology that allows patients ... relatively mild treatments or take drastic measures. , ... an associate professor of biomedical engineering at Case ...
(Date:5/23/2013)... in Neuron , the team reveal the interplay ... work funded by the Wellcome Trust and BBSRC. ... stimuli we improve our perceptual abilities. While these changes ... can also affect the fidelity of that response. ... Neuroscience explains: "When you communicate with others, you can ...
Breaking Biology News(10 mins):Reforestation study shows trade-offs between water, carbon and timber 2Reforestation study shows trade-offs between water, carbon and timber 3Using big data to identify prostate cancers and best treatments 2Using big data to identify prostate cancers and best treatments 3
... have made a surprising discovery: phagocytosis depends more on ... implications for immunology, vaccine development and drug delivery, is ... Academy of Sciences by Samir Mitragotri, a UCSB professor ... The paper will be published in print on March ...
... on the path of realizing the promise of embryonic stem ... issue of Cell, the researchers have discovered unique molecular imprints ... the cells' rare ability to form almost any body cell ... that control embryonic development and probably coordinate their activity in ...
... And, at least for mice, it's one that is best made ... designed help scientists understand the brain chemicals that guide mate selection, ... a male mouse alone or a male mouse with a female. ... females. , "Our data suggest that female mice may use, or ...
Cached Biology News:Novel molecular 'signature' marks DNA of embryonic stem cells 2Novel molecular 'signature' marks DNA of embryonic stem cells 3When mice choose mates, experience counts 2
GLP-compliant, CLIA-certified DNA sequencing service. ASQ and SQA certified quality assurance staff. Auditors welcome....
Sequencing and primer design rolled into one. Just give us your clone and a reference sequence, and we'll do the rest. Single-strand or double-strand coverage. Guaranteed results....
... polyclonal antibody to human XAB2 (amino terminus) ... identified through its interaction with XPA. Immunoprecipitation ... of XAB2 interacts with the transcription-coupled repair-specific ... with RNA polymerase II. Microinjection experiments with ...
... microplate coating using advanced automated high throughput microplate processing equipment ... can also accommodate virtually any lot size of the following ... 8 and 12 well strips, ... 384 well microplate, ...
Biology Products: