Subscribe free to our newsletters via your
. Military Space News .




NANO TECH
Stunning image of smallest possible 5 rings
by Staff Writers
Warwick UK (SPX) May 29, 2012


Olympicene - Scientists have created and imaged the smallest possible five-ringed structure. A collaboration between the Royal Society of Chemistry (RSC), the University of Warwick and IBM Research - Zurich has allowed the scientists to bring a single molecule to life in a using a combination of clever synthetic chemistry and state-of-the-art imaging techniques.

Scientists have created and imaged the smallest possible five-ringed structure - about 100,000 times thinner than a human hair - and you'll probably recognise its shape. A collaboration between the Royal Society of Chemistry (RSC), the University of Warwick and IBM Research - Zurich has allowed the scientists to bring a single molecule to life in a picture, using a combination of clever synthetic chemistry and state-of-the-art imaging techniques.

The scientists decided to make and visualise olympicene whose five-ringed structure was entered on ChemSpider, the RSC's free online chemical database of over 26 million records two years ago.

"When doodling in a planning meeting, it occurred to me that a molecular structure with three hexagonal rings above two others would make for an interesting synthetic challenge," said Professor Graham Richards CBE, RSC Council member.

"I wondered: could someone actually make it, and produce an image of the actual molecule?"

Chemists at the University of Warwick, Dr David Fox and Anish Mistry, used some clever synthetic organic chemistry - the modern molecule designer's toolbox - to build olympicene.

"Alongside the scientific challenge involved in creating olympicene in a laboratory, there's some serious practical reasons for working with molecules like this," said Dr Fox.

"The compound is related to single-layer graphite, also known as graphene, and is one of a number of related compounds which potentially have interesting electronic and optical properties.

"For example these types of molecules may offer great potential for the next generation of solar cells and high-tech lighting sources such as LEDs."

A first glimpse of the molecule's structure was obtained by Dr Giovanni Costantini and Ben Moreton at Warwick using scanning tunnelling microscopy. A higher resolution technique was however needed to unravel its atomic-level anatomy.

To truly bring olympicene to life, the Physics of Nanoscale Systems Group at IBM Research - Zurich in Switzerland analysed the chemical structure of olympicene with unprecedented resolution using a complex technique known as noncontact atomic force microscopy. Using the technique IBM scientists imaged a single olympicene molecule just 1.2 nanometres in width, about 100,000 times thinner than a human hair.

"The key to achieving atomic resolution was an atomically sharp and defined tip apex as well as the very high stability of the system," explains IBM scientist Dr. Leo Gross. "We prepared our tip by deliberately picking up single atoms and molecules and showed that it is the foremost tip atom or molecule that governs the contrast and resolution of our AFM measurements."

This technique was first published in the journal of Science back in August 2009. The chemical recipes for making olympicene, along with a whole range of other molecules, are posted on the ChemSpider Synthetic Pages (CSSP), where scientists can record and share the best ways to do specific reactions. Video supporting this story reports is available here.

.


Related Links
University of Warwick
Nano Technology News From SpaceMart.com
Computer Chip Architecture, Technology and Manufacture






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

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








NANO TECH
Quantum dots appear safe in pioneering study on primates
Buffalo NY (SPX) May 24, 2012
A pioneering study to gauge the toxicity of quantum dots in primates has found the tiny crystals to be safe over a one-year period, a hopeful outcome for doctors and scientists seeking new ways to battle diseases like cancer through nanomedicine. In the study, scientists found that four rhesus monkeys injected with cadmium-selenide quantum dots remained in normal health over 90 days. Blood ... read more


NANO TECH
Rafael seeks to boost range of Iron Dome

Lockheed Martin Delivers Core Structure for Fourth SBIRS Satellite

NATO activates missile shield, reaches out to Russia

NATO activates missile shield despite Russian anger

NANO TECH
Pakistan tests nuclear-capable missile

Taiwan deploys anti-China missiles: report

Rafael seeks missile shield for helicopters

S. Korea 'to spend $2 bn' on hundreds of missiles

NANO TECH
US drones kill 9 militants in Pakistan: officials

AeroVironment Introduces Digital Wasp AE Small Unmanned Aircraft System

A new imaging system produces 3D models of monuments using unmanned aircraft

US drone strike kills eight in Pakistan: officials

NANO TECH
Researchers Improve Fast-Moving Mobile Networks

Second AEHF Military Communications Satellite Launched

Fourth Boeing-built WGS Satellite Accepted by USAF

Raytheon to Continue Supporting Coalition Forces' Information-Sharing Computer Network

NANO TECH
Congress to spend more on tanks than US military wants

Pre-qualified modular app ready platform gets apps promptly to the battlefield

Raytheon awarded $57.8 million Phalanx contract

ARL-led program enables new manufacturing processes for ballistic protection

NANO TECH
Treatment of Vietnam vets 'a national shame': Obama

$3B in training deals for European firms

Canadian military shakeup to save costs

S. Korea says to pick weapons suppliers in October

NANO TECH
Commentary: Alarm bells in the U.S.

Obama's Memorial Day message: troops are coming home

China cancels high-level military visit to Japan

Outside View: America's future

NANO TECH
First direct observation of oriented attachment in nanocrystal growth

Stunning image of smallest possible 5 rings

Sensing the infrared: Researchers improve IR detectors with single-walled carbon nanotubes

Quantum dots appear safe in pioneering study on primates




The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal 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. 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