Junqiao Wu of the Materials Sciences Division and Sefaattin Tongay (pictured) led an international team of researchers at the Molecular Foundry in thediscovery of rhenium disulfide, a unique new semiconductor that behaves electronically as if it were a 2D monolayer even as a 3D bulk material. This not only makes it possible to study 2D physics with easy-to-make 3D crystals, it opens the door to a variety of 2D electronic applications with a 3D material, including super-lubricants, solar cells and the fledgling technology of valleytronics. Other members of the team included Hasan Sahin, Changhyun Ko, Alex Luce, Wen Fan, Kai Liu, Jian Zhou, Ying-Sheng Huang, Ching-Hwa Ho, Jinyuan Yan, Frank Ogletree, Shaul Aloni, Jie Ji, Shushen Li, Jingbo Li and F. M. Peeters. More>
Posts Tagged ‘Materials Sciences Division’
Jim Schuck (right) and Bruce Cohen (left), of the Materials Sciences Division, led a study at the Moleculer Foundry that revealed surprising new rules for creating ultra-bright, ultra-small nanoprobes for imaging single proteins. These new rules enabled the Foundry team to create light-emitting crystals less than 10 nanometers in diameter that should be a big asset for biological imaging, especially deep-tissue optical imaging of neurons in the brain. Other members of this research team included Daniel Gargas (center right), Emory Chan (center left), Alexis Ostrowski, Shaul Aloni, Virginia Altoe, Edward Barnard, Babak Sanii, Jeffrey Urban and Delia Milliron. More>
March is Women’s History Month and the Lab is hosting two events to celebrate the occasion. On Friday, Mimoza Ristova, a visiting scholar in the Materials Sciences Division, will give a presentation on famed two-time Noble-prize winning scientist Marie Curie, at 2 p.m. in the Building 66 Auditorium. On Monday, March 17, the Diversity & Inclusion Council and Women’s Scientists and Engineers council provide a free screening of the film “Top Secret Rosies: The Female Computers of World War II” at noon in the Building 50 Auditorium. The film chronicles a group of women mathematicians who helped win the war and usher in the modern computer age. RSVP here if you would like to watch the film remotely.
The flip of a light switch — a nano-scale light switch — may some day dramatically boost the speed of data transmission, from streaming movies to accelerating the most data-intense computation. Today, information flow in a computer is based on electrical pulses. But if an electrical signal could instead control a light switch, the “ones and zeros” that give data meaning could race through computer circuits at ten times the current speed. A ten-fold increase in speed would mean a similar spike in the volume of information that can be processed. Research on this nano-scale light switch is being conducted by Berkeley Lab materials scientist Feng Wang, as part of his UC Berkeley Bakar Fellowship. More>
Peidong Yang, a chemist and nanomaterials authority who holds joint appointments with the Materials Sciences Division, UC Berkeley and the Kavli Energy NanoSciences Institute, led the discovery of a highly promising new class of nanocatalysts for fuel cells and water-alkali electrolyzers. Consisting of hollow platinum/nickel dodecahedron nanoframes, these nanocatalysts already exceed the activity target DOE set for 2017 by an order of magnitude. Also contributing to this research, done in collaboration with Argonne National Lab, were Vojislav Stamenkovic, Chen Chen, Yijin Kang, Ziyang Huo, Zhongwei Zhu, Wenyu Huang, Huolin Xin, Joshua Snyder, Dongguo Li, Jeffrey Herron, Manos Mavrikakis, Miaofang Chi, Karren More, Yadong Li, Nenad Markovic and Gabor Somorjai. More>
Jian Liu of the Materials Sciences Division, and Yi-De Chuang and Jinghua Guo of the Advanced Light Source, were part of a team that discovered a key to controlling the electronic and magnetic properties of Mott materials — metal oxides that can be induced to transition between electrically conductive and insulating phases. Mott materials hold great promise for future transistors and memories that feature higher energy efficiencies and faster switching speeds than today’s devices, a prospect that has been dubbed “Mottronics.” Other members of the discovery team were Jak Chakhalian, a University of Arkansas physicist who led this research, plus Mehdi Kargarian, Mikhail Kareev, Ben Gray, Phil Ryan, Alejandro Cruz, Nadeem Tahir, James Rondinelli, John Freeland and Gregory Fiete. More>
Elad Gross (right), of the Chemical Sciences Division, working at the Advanced Light Source with Dean Toste (left) and Kavli Energy NanoSciences Institute member Gabor Somorjai, demonstrated the first technique that allows the catalytic reactivity inside a microreactor to be mapped in high resolution from start-to-finish. Through a combination of in situ infrared micro-spectroscopy and in situ x-ray absorption microspectroscopy, the technique provides a better understanding of the chemistry behind the catalytic reactions and may reveal opportunities for optimizing catalytic performances. This holds promise for more effective and efficient synthesis of pharmaceutical drugs and other flow reactor products. Also working on this study were Xing-Zhong Shu, Selim Alayoglu, Hans Bechtel and Michael Martin. More>
“Ballistic transport” sounds like a blast into the future. And it is. By fabricating strips of carbon only one-atom thick and less than 15 atoms wide, researchers aim to create molecular-scale nanoribbons capable of carrying information thousands of times faster than is possible today. Materials scientist Felix Fischer — a member of the Kavli Energy NanoSciences Institute at Berkeley — is using his support from UC Berkeley’s Bakar Fellows Program to develop a totally new and extraordinarily precise way to create nanoribbons. More>
In an effort to go beyond the CVs of some of the Materials Sciences Division’s most interesting personalities, Alice Muller will host live conversations with MSD researchers. She will talk with guests about their personal history, research, inspiration, mentors, motivations, and more. Her first guests will be Delia Milliron (left) and Anna Llordes, who have helped develop smart window technology. The event takes place Friday, Feb. 21, at 4 p.m. in Building 67-3111.
A material that prevents marine life from sticking to the bottom of ships has been identified a surprising replacement for the only inherently flammable component of today’s lithium-ion batteries: the electrolyte. The work not only paves the way for developing a new generation lithium-ion battery that doesn’t spontaneously combust at high temperatures, but also has the potential to renew consumer confidence in a technology that has attracted significant concern. A Berkeley Lab team led by materials scientist Nitash Balsara is working with researchers at the University of North Carolina on this research. More>