Path: EDN Asia >> News Centre >> Medical >> Graphene paves way for nanoparticle imaging system
Medical Share print

Graphene paves way for nanoparticle imaging system

27 Jul 2015  | R. Colin Johnson

Share this page with your friends

"The atomic structure of the quantum dots including their shape, surface facets and internal defects are critical parameters to tuning their properties. Our method could be used to determine the structural properties of quantum dots and thus improve their design for applications including photonics," Ercius said.

Ercius' group's next step at LBNL will be to use a faster 400 frames-per-second camera to more accurately construct 3D models over the 2nm accuracy they have today, eventually producing the atomic-scale accuracy desired by nanoparticle designers.

Peter Ercius

Peter Ercius with the TEAM I electron microscope at the Molecular Foundry's National Center for Electron Microscopy. (Source: Roy Kaltschmidt/LBNL)

"Our next step is to push the technique to locate all of the atoms in a single element used in a particle. New cameras now installed on our TEM allow 10-times faster acquisition and higher quality pictures which should allow us to reach this goal," Ercius told us. "We also plan to explore how large of a particle we can reconstruct."

Eventually, the technique could be used to assemble complete electronic and photonic materials and even complete devices, using a bottom-up method that marries different components by encoding the surfaces of each nanoparticle so they snap-together automatically.

SINGLE was invented by a multi-institutional team of researchers funded by the U.S. Department of Energy at LBNL. Also contributing to the work was Berkeley Lab director Paul Alvisatos at the Molecular Foundry and director of the Kavli Energy NanoScience Institute at Berkeley (Kavli ENSI). Other contributors include Professor Jungwon Park of Harvard University, Professor Hans Elmlund of Australia's Monash University, along with post-doc and doctoral candidates Jong Min Yuk, David Limmer, Qian Chen, Kwanpyo Kim, Sang Hoon Han, David Weitz and Alex Zettl.

 First Page Previous Page 1 • 2

Want to more of this to be delivered to you for FREE?

Subscribe to EDN Asia alerts and receive the latest design ideas and product news in your inbox.

Got to make sure you're not a robot. Please enter the code displayed on the right.

Time to activate your subscription - it's easy!

We have sent an activate request to your registerd e-email. Simply click on the link to activate your subscription.

We're doing this to protect your privacy and ensure you successfully receive your e-mail alerts.

Add New Comment
Visitor (To avoid code verification, simply login or register with us. It is fast and free!)
*Verify code:
Tech Impact

Regional Roundup
Control this smart glass with the blink of an eye
K-Glass 2 detects users' eye movements to point the cursor to recognise computer icons or objects in the Internet, and uses winks for commands. The researchers call this interface the "i-Mouse."

GlobalFoundries extends grants to Singapore students
ARM, Tencent Games team up to improve mobile gaming

News | Products | Design Features | Regional Roundup | Tech Impact