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




Subscribe to our free daily newsletters



CARBON WORLDS
Flourine lends white graphene new qualities
by Brooks Hays
Washington (UPI) Jul 14, 2017


With just a bit of fluorine, white graphene becomes a wide-bandgap semiconductor with magnetic properties. The new material could be used in electronics designed to perform under extreme conditions.

White graphene is a two-dimensional atomic sheet of hexagonal boron nitride. Its hexagonal structure is similar to that of regular graphene, but the atomic layer is made up of boron nitride, a combination of boron and nitrogen atoms, instead of carbon.

Although graphene is more chemically and electrically stable than graphene, allowing it to function under more extreme circumstances, like in space.

But the material is typically employed as an insulator, not a semi-conductor.

"Boron nitride is a stable insulator and commercially very useful as a protective coating, even in cosmetics, because it absorbs ultraviolet light," Pulickel Ajayan, a material scientist at Rice University, said in a news release. "There has been a lot of effort to try to modify its electronic structure, but we didn't think it could become both a semiconductor and a magnetic material."

By adding a small amount of fluorine, scientists at Rice were able to decrease white graphene's bandgap enough to turn the material into a semiconductor. Bandgap describes the amount of energy required to generate an electric current.

"We saw that the gap decreases at about 5 percent fluorination," said Rice postdoctoral researcher Chandra Sekhar Tiwary.

"Controlling the precise fluorination is something we need to work on," Tiwary said. "We can get ranges but we don't have perfect control yet. Because the material is atomically thin, one atom less or more changes quite a bit."

Scientists hope further tests will enable them to fine tune the fluorination.

Surprisingly, researchers also found the addition of fluorine altered the spin of electrons in the material's nitrogen atoms, lending white graphene magnetic properties.

"We see angle-oriented spins, which are very unconventional for 2-D materials," said Rice graduate student Sruthi Radhakrishnan.

Researchers described the new material in the journal Science Advances.

Scientists in England recently used white graphene to create a tiny, low-energy sensor.

CARBON WORLDS
Clemson researchers illuminate the field of microscopy with nanoparticle 'buckyswitch'
Clemson SC (SPX) Jul 14, 2017
Visualizing biological cells under a microscope was just made clearer, thanks to research conducted by graduate student Yifei Jiang and principal investigator Jason McNeill of Clemson University's department of chemistry. With the help of Rhonda Powell and Terri Bruce of Clemson's Light Imaging Facility, the team was able to develop a nanoparticle "switch" that fluoresces to sharpen the re ... read more

Related Links
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
Counting calories in space

As the world embraces space, the 50 year old Outer Space Treaty needs adaptation

Dutch project tests floating cities to seek more space

Creating Trends in Space: An Interview with NanoRacks CEO Jeffrey Manber

CARBON WORLDS
Aerojet Rocketdyne tests Advanced Electric Propulsion System

After two delays, SpaceX launches broadband satellite for IntelSat

Spiky ferrofluid thrusters can move satellites

Hypersonic Travel Possibility Heats Up Massively After New Material Discovery

CARBON WORLDS
Mars surface 'more uninhabitable' than thought: study

Mars Rover Opportunity continuing science campaign at Perseverance Valley

The Niagara Falls of Mars once flowed with lava

Russian Devices for ExoMars Mission to Be Ready in Fall 2017

CARBON WORLDS
China develops sea launches to boost space commerce

Chinese satellite Zhongxing-9A enters preset orbit

Chinese Space Program: From Setback, to Manned Flights, to the Moon

Chinese Rocket Fizzles Out, Puts Other Launches on Hold

CARBON WORLDS
Iridium Poised to Make Global Maritime Distress and Safety System History

100M Pound boost for UK space sector

HTS Capacity Lease Revenues to Reach More Than $6 Billion by 2025

SES Transfers Capacity from AMC-9 Satellite Following Significant Anomaly

CARBON WORLDS
Sorting complicated knots

Nature-inspired material uses liquid reinforcement

News laser design offers more inexpensive multi-color output

Chemistry discovery yields 3-D table-top objects crafted from light

CARBON WORLDS
Gulf of Mexico tube worm is one of the longest-living animals in the world

Big, shape-shifting animals from the dawn of time

Hidden Stars May Make Planets Appear Smaller

Astronomers Track the Birth of a 'Super-Earth'

CARBON WORLDS
Juno Completes Flyby over Jupiter's Great Red Spot

NASA spacecraft to fly over Jupiter's Great Red Spot

New Mysteries Surround New Horizons' Next Flyby Target

Mid-infrared images from the Subaru telescope extend Juno spacecraft discoveries




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