Subscribe to our free daily newsletters
. 24/7 Space News .




Subscribe to our free daily newsletters



CARBON WORLDS
BESSY 2 experiment shows 3D graphene properties are tuneable
by Staff Writers
Berlin, Germany (SPX) May 30, 2017


SEM-images of 3-D graphene with different pore size (a,b,c, scale = 1um) are shown. Optical properties (d,e,f) change with pore size. Credit Nature Communications: 10.1038/ncomms14885

Carbon is a very versatile element. It not only forms diamonds, graphite, and coal, but can also take a planar form as a hexagonal matrix - graphene. This material, consisting of only a single atomic layer, possesses many extreme properties. It is highly conductive, optically transparent, and is mechanically flexible as well as able to withstand loads.

Andre Geim and Konstantin Novoselov received the 2010 Nobel Prize in Physics for the discovery of this exotic form of carbon. And just recently, a Japanese team has been successful in stacking two-dimensional graphene layers in a three-dimensional architecture with nanometre-sized pores.

A research team operated by a group at Sapienza University in Rome has now for the first time made a detailed investigation of the optical properties of 3D graphene at BESSY II. The team was able to ascertain from the data how charge density oscillations, known as plasmons, propagate in three-dimensional graphene. In doing so, they determined that these plasmons follow the same physical laws as 2D graphene.

However, the frequency of the plasmons in 3D graphene can be very precisely controlled, either by introducing atomic impurities (doping), by the size of the nanopores, or by attaching specific molecules in certain ways to the graphene.

In this way, the novel material might also lend itself to manufacturing specific chemical sensors, as the authors write in Nature Communications. In addition, the new material is interesting as an electrode material for employment in solar cells.

Advantages provided by the IRIS beamline
The researchers used the IRIS beamline at the BESSY II synchrotron source in Berlin to their advantage for their investigations. Broad-band infrared is available there, which especially facilitates spectroscopic analysis of novel materials using terahertz radiation.

"A special operating mode of the BESSY II storage ring called low-alpha allowed us to measure the optical conductivity of three-dimensional graphene with a particularly high signal-to-noise ratio.

This is hardly possible with standard methods, especially in the terahertz region. However, it is exactly this region that is important for observing critical physical properties", says Dr. Ulrich Schade, head of the group at the infrared beamline.

Published in Nature Communications (2017): "Terahertz and mid-infrared plasmons in three-dimensional nanoporous graphene"; Fausto D'Apuzzo, Alba R. Piacenti, Flavio Giorgianni, Marta Autore, Mariangela Cestelli Guidi,Augusto Marcelli, Ulrich Schade, Yoshikazu Ito, Mingwei Chen and Stefano Lupi

CARBON WORLDS
Laser-induced graphene kills bacteria, resists biofouling
Houston TX (SPX) May 26, 2017
Scientists at Rice University and Ben-Gurion University of the Negev (BGU) have discovered that laser-induced graphene (LIG) is a highly effective anti-fouling material and, when electrified, bacteria zapper. LIG is a spongy version of graphene, the single-atom layer of carbon atoms. The Rice lab of chemist James Tour developed it three years ago by burning partway through an inexpensive p ... read more

Related Links
Helmholtz-Zentrum Berlin fur Materialien und Energie
Carbon Worlds - where graphite, diamond, amorphous, fullerenes meet


Thanks for being here;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.

SpaceDaily Contributor
$5 Billed Once


credit card or paypal
SpaceDaily Monthly Supporter
$5 Billed Monthly


paypal only

Comment using your Disqus, Facebook, Google or Twitter login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle

CARBON WORLDS
First Year of BEAM Demo Offers Valuable Data on Expandable Habitats

NASA honors Kennedy's space vision on 100th birthday

Conch shells may inspire better helmets, body armor

MIT researchers engineer shape-shifting food

CARBON WORLDS
Dream Chaser Spacecraft Passes Major Milestone

Dragon Spacecraft Prepared to Resupply International Space Station

NASA's Space Launch System Engine Testing Heats Up

Successful launch puts New Zealand in space race

CARBON WORLDS
Halos discovered on Mars widen time frame for potential life

Student-Made Mars Rover Concepts Lift Off

Illinois Company Among Hundreds Supporting NASA Mission to Mars

Preparations Continue Before Driving into 'Perseverance Valley'

CARBON WORLDS
California Woman Charged for Trying to Hand Over Sensitive Space Tech to China

A cabin on the moon? China hones the lunar lifestyle

China tests 'Lunar Palace' as it eyes moon mission

China to conduct several manned space flights around 2020

CARBON WORLDS
Leading Global Air And Space Law Group Joins Reed Smith

New Horizons for Alexander Gerst

Government space program spending reaches 62B dollars in 2016

New Target Date for Second Iridium NEXT Launch

CARBON WORLDS
Camera on NASA's Lunar Orbiter survived 2014 meteoroid hit

Strathclyde-led research develops world's highest gain high-power laser amplifier

Atomic structure of irradiated materials is more akin to liquid than glass

Using light to rearrange macroscopic structures

CARBON WORLDS
Viable Spores, DNA Fragments Discovery at ISS Justifies Biosphere's Expansion

Russia thinks microorganisms may be living outside the space station

The race to trace TRAPPIST-1h

Water forms superstructure around DNA, new study shows

CARBON WORLDS
A whole new Jupiter with first science results from Juno

First results from Juno show cyclones and massive magnetism

Jupiters complex transient auroras

NASA's Juno probe forces 'rethink' on Jupiter




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News






The content herein, unless otherwise known to be public domain, are Copyright 1995-2017 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement