Navigation Links
Infrared vision lets researchers see through -- and into -- multiple layers of graphene
Date:11/21/2013

BUFFALO, N.Y. It's not X-ray vision, but you could call it infrared vision.

A University at Buffalo-led research team has developed a technique for "seeing through" a stack of graphene sheets to identify and describe the electronic properties of each individual sheet even when the sheets are covering each other up.

The method involves shooting a beam of infrared light at the stack, and measuring how the light wave's direction of oscillation changes as it bounces off the layers within.

To explain further: When a magnetic field is applied and increased, different types of graphene alter the direction of oscillation, or polarization, in different ways. A graphene layer stacked neatly on top of another will have a different effect on polarization than a graphene layer that is messily stacked.

"By measuring the polarization of reflected light from graphene in a magnetic field and using new analysis techniques, we have developed an ultrasensitive fingerprinting tool that is capable of identifying and characterizing different graphene multilayers," said John Cerne, PhD, UB associate professor of physics, who led the project.

The technique allows the researchers to examine dozens of individual layers within a stack.

Graphene, a nanomaterial that consists of a single layer of carbon atoms, has generated huge interest due to its remarkable fundamental properties and technological applications. It's lightweight but also one of the world's strongest materials. So incredible are its characteristics that it garnered a Nobel Prize in Physics in 2010 for two scientists who pioneered its study.

Cerne's new research looks at graphene's electronic properties, which change as sheets of the material are stacked on top of one another. The findings appeared Nov. 5 in Scientific Reports, an online, open-access journal produced by the publishers of Nature.

Cerne's collaborators included colleagues from UB and the U.S. Naval Research Laboratory.

So, why don't all graphene layers affect the polarization of light the same way?

Cerne says the answer lies in the fact that different layers absorb and emit light in different ways.

The study showed that absorption and emission patterns change when a magnetic field is applied, which means that scientists can turn the polarization of light on and off either by applying a magnetic field to graphene layers or, more quickly, by applying a voltage that sends electrons flowing through the graphene.

"Applying a voltage would allow for fast modulation, which opens up the possibility for new optical devices using graphene for communications, imaging and signal processing," said first author Chase T. Ellis, a former graduate research assistant at UB and current postdoctoral fellow at the Naval Research Laboratory.


'/>"/>

Contact: Charlotte Hsu
chsu22@buffalo.edu
716-645-4655
University at Buffalo
Source:Eurekalert  

Related biology technology :

1. Ben-Gurion University awarded $6.5 million grant to develop nano thin infrared night vision glasses
2. New device hides, on cue, from infrared cameras
3. Sensing the infrared: Researchers improve IR detectors with single-walled carbon nanotubes
4. New nano-material combinations produce leap in infrared technology
5. RXi Pharmaceuticals Announces the Start of Their First Phase 2 Study with RXI-109 for Treatment of Hypertrophic Scars in Conjunction with Scar Revision Surgery
6. TrueVision Announces TrueGuide™ Computer-Guided Surgery System for Cataract Surgery
7. Genera Energy Featured on Public Television’s “This American Land”
8. Terascala Advances Its Vision of Optimizing High-Performance Computing Workflows for Faster Time to Results
9. Rudolf Kingslake Medal Awarded by SPIE for TNO Paper on Color Image Fusion for Night-Vision Applications
10. Curemark CEO To Deliver Keynote Address at the BioScience Vision Summit
11. MRIGlobal Engages Industry Expert in Expansion of Molecular Diagnostic Division
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Infrared vision lets researchers see through -- and into -- multiple layers of graphene
(Date:3/22/2017)... 2017  Ascendis Pharma A/S (Nasdaq: ASND), a ... to address significant unmet medical needs in rare ... year ended December 31, 2016. ... as we broadened our pipeline and pursued our ... company with an initial focus on endocrinology," said ...
(Date:3/22/2017)... 22, 2017 The global chronic ... research report by Transparency Market Research (TMR). The top ... and AbbVie Inc., accounted for a share of only ... in this market are focusing aggressively on mergers, acquisitions, ... is likely to lead to market consolidation in the ...
(Date:3/22/2017)... ... March 21, 2017 , ... Premier executive recruitment firm, ... Science Search Firm by Hunt Scanlon Media. , Hunt Scanlon Media is ... most widely referenced global news source in the human capital sector. , “It is ...
(Date:3/22/2017)... , ... March 21, 2017 , ... The Conference Forum ... (CMO Summit) to be held on May 10-11, 2017, at the Colonnade Hotel in ... specifically for Chief Medical Officer peer-to-peer learning, benchmarking and support. , “The Chief Medical ...
Breaking Biology Technology:
(Date:3/2/2017)... Summary This report provides all the ... interests and activities since 2010. ... Read the full report: http://www.reportlinker.com/p03605615-summary/view-report.html ... report provides an in-depth insight into the partnering activity of ... On demand company reports are prepared upon purchase to ensure ...
(Date:3/2/2017)... Australia , March 2, 2017 Australian ... Ltd (ASX: CYP), has signed an agreement with ... from the Monash Biomedicine Discovery Institute and Department of ... to conduct a further preclinical study to support the ... treatment of asthma.  Asthma is a ...
(Date:2/28/2017)... -- News solutions for biometrics, bag drop and New ... At ... 16 March, Materna will present its complete end-to-end passenger journey, ... a real benefit for passengers. To accelerate the whole passenger ... point solutions to take passengers through the complete integrated process ...
Breaking Biology News(10 mins):