Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > Press > Student’s Discovery Advances Nanotech Research

Materials science graduate student Muge Acik has been working with graphene, a single sheet of carbon that exhibits unique electronic and mechanical properties.
Materials science graduate student Muge Acik has been working with graphene, a single sheet of carbon that exhibits unique electronic and mechanical properties.

Abstract:
Enhanced, Ultra-Thin Sheets of Carbon Hold Promise in Sensor Applications

Student’s Discovery Advances Nanotech Research

Richardson, TX | Posted on October 7th, 2010

A UT Dallas graduate student's surprising research results could ultimately lead to high-performance nanoelectronics applications such as electron emitters, thermal-infrared night-vision sensors and solar absorbers for harvesting sunlight.

Materials science graduate student Muge Acik has been working with graphene, a single sheet of carbon that exhibits unique electronic and mechanical properties, making it a candidate to eventually replace silicon in applications like ultrafast transistors.

Making real-world devices from graphene, however, depends upon controlling the edges of graphene sheets, which often dictate the material's electronic properties. Simply adding oxygen atoms at the edges may turn graphene into an insulator.

Performing her experimental work on graphene oxide (GO) in Dr. Yves Chabal's Laboratory for Surface and Nanostructure Modification, Acik discovered a new infrared absorption mechanism when GO is annealed to about 850°C to remove most oxygen. The result was a very special arrangement of oxygen atoms at the edges. This stable configuration fosters the electronic conduction or emission necessary for device operation and for electron emitters.

Moreover, "this new phenomenon opens the door to tailoring giant infrared absorption at different spectral positions by modifying the nature of the edge termination," she and her co-investigators concluded. And that opens the door to employing graphene in a number of nanoelectronic applications in which infrared absorption is important, such as night-vision sensors and sunlight-harvesting solar absorbers.

"This work is a good example where the contribution from theory has been critical, as provided by Dr. G. Lee, a postdoctoral fellow working under the supervision of Dr. Kyeongjae ‘KJ' Cho," said Chabal, head of materials science and engineering and holder of the Texas Instruments Distinguished University Chair in Nanoelectronics. "The theory provided a detailed understanding of this new phenomenon that would have remained puzzling on its own."

Cho added that "this experimental finding is consistent with an earlier theoretical prediction of the metallic state of graphene edge oxide published in Physical Review in 2009."

The team's results recently appeared in the journal Nature Materials in an article titled "Unusual Infrared Absorption Mechanism in Thermally Reduced Graphene Oxide."

This absorption is a new phenomenon that's unique to graphene, according to Chabal in an article that appeared in nanotechweb.org, noting that the potential applications are very exciting.

"The effect cannot be explained by simple infrared absorption mechanisms and can only happen if free, mobile electrons are induced in reduced graphene oxide - something that has never been observed before," the article concluded.

The research was funded by the Semiconductor Research Corp.'s Nanotechnology Research Initiative and by Texas Instruments. The work was done in collaboration with Cecilia Mattevi and Manish Chhowalla at Rutgers University. A synopsis of the Nature Materials article is featured under Nano Focus here.

####

For more information, please click here

Contacts:
Media Contact: David Moore, UT Dallas, (972) 883-4183,

Office of Media Relations, UT Dallas, (972) 883-2155,

Copyright © University of Texas at Dallas

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

The Hiden EQP Plasma Diagnostic with on-board MCA July 22nd, 2014

Bruker Awarded Fourth PeakForce Tapping Patent: AFM Mode Uniquely Combines Highest Resolution Imaging and Material Property Mapping July 22nd, 2014

NIST shows ultrasonically propelled nanorods spin dizzyingly fast July 22nd, 2014

Penn Study: Understanding Graphene’s Electrical Properties on an Atomic Level July 22nd, 2014

Possible Futures

IBM Announces $3 Billion Research Initiative to Tackle Chip Grand Challenges for Cloud and Big Data Systems: Scientists and engineers to push limits of silicon technology to 7 nanometers and below and create post-silicon future July 10th, 2014

Virus structure inspires novel understanding of onion-like carbon nanoparticles April 10th, 2014

Local girl does good March 22nd, 2014

Surface Characteristics Influence Cellular Growth on Semiconductor Material March 12th, 2014

Academic/Education

Haydale Announces Collaboration Agreement with Swansea University’s Welsh Centre for Printing and Coatings (WCPC) July 12th, 2014

STFC takes delivery of the 100th Hitachi Tabletop SEM in the UK July 3rd, 2014

Innovation Management and the Emergence of the Nanobiotechnology Industry July 1st, 2014

Albany NanoCollege Faculty Member Selected as Editor-in-Chief of the Prestigious Journal of Electronic Materials July 1st, 2014

Chip Technology

Nanometrics Announces Upcoming Investor Events July 22nd, 2014

Penn Study: Understanding Graphene’s Electrical Properties on an Atomic Level July 22nd, 2014

NUS scientists use low cost technique to improve properties and functions of nanomaterials: By 'drawing' micropatterns on nanomaterials using a focused laser beam, scientists could modify properties of nanomaterials for effective applications in photonic and optoelectric applicat July 22nd, 2014

Oregon chemists eye improved thin films with metal substitution: Solution-based inorganic process could drive more efficient electronics and solar devices July 21st, 2014

Sensors

Tiny laser sensor heightens bomb detection sensitivity July 19th, 2014

Iranian Scientists Use Nanosensors to Achieve Best Limit for Early Cancer Diagnosis July 19th, 2014

Rice nanophotonics experts create powerful molecular sensor: Sensor amplifies optical signature of single molecules about 100 billion times July 15th, 2014

University of Illinois researchers demonstrate novel, tunable nanoantennas July 14th, 2014

Nanoelectronics

3-D nanostructure could benefit nanoelectronics, gas storage: Rice U. researchers predict functional advantages of 3-D boron nitride July 15th, 2014

IBM Announces $3 Billion Research Initiative to Tackle Chip Grand Challenges for Cloud and Big Data Systems: Scientists and engineers to push limits of silicon technology to 7 nanometers and below and create post-silicon future July 10th, 2014

Carbodeon enables 20 percent increase in polymer thermal filler conductivity with 0.03 wt.% nanodiamond additive at a lower cost than with traditional fillers: Improved materials and processes enable nanodiamond cost reductions of up to 70 percent for electronics and LED app July 9th, 2014

Nanotechnology that will impact the Security & Defense sectors to be discussed at NanoSD2014 conference July 8th, 2014

Discoveries

NIST shows ultrasonically propelled nanorods spin dizzyingly fast July 22nd, 2014

Penn Study: Understanding Graphene’s Electrical Properties on an Atomic Level July 22nd, 2014

NUS scientists use low cost technique to improve properties and functions of nanomaterials: By 'drawing' micropatterns on nanomaterials using a focused laser beam, scientists could modify properties of nanomaterials for effective applications in photonic and optoelectric applicat July 22nd, 2014

Oregon chemists eye improved thin films with metal substitution: Solution-based inorganic process could drive more efficient electronics and solar devices July 21st, 2014

Announcements

Nanometrics Announces Upcoming Investor Events July 22nd, 2014

Bruker Awarded Fourth PeakForce Tapping Patent: AFM Mode Uniquely Combines Highest Resolution Imaging and Material Property Mapping July 22nd, 2014

NIST shows ultrasonically propelled nanorods spin dizzyingly fast July 22nd, 2014

Penn Study: Understanding Graphene’s Electrical Properties on an Atomic Level July 22nd, 2014

Energy

Oregon chemists eye improved thin films with metal substitution: Solution-based inorganic process could drive more efficient electronics and solar devices July 21st, 2014

Steam from the sun: New spongelike structure converts solar energy into steam July 21st, 2014

3-D nanostructure could benefit nanoelectronics, gas storage: Rice U. researchers predict functional advantages of 3-D boron nitride July 15th, 2014

Nanotechnology that will impact the Security & Defense sectors to be discussed at NanoSD2014 conference July 8th, 2014

Solar/Photovoltaic

Steam from the sun: New spongelike structure converts solar energy into steam July 21st, 2014

Making dreams come true: Making graphene from plastic? July 2nd, 2014

Shrinky Dinks close the gap for nanowires July 1st, 2014

New Study Raises Possibility of Production of P-Type Solar Cells July 1st, 2014

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More














ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







© Copyright 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE