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11月4日加州大学卢青教授报告会

报告题目:Creating New Energy Transduction Material Platforms

开始时间:2015-11-04 13:30

报告地点:实验一楼 第一会议室

人:加州大学Merced分校 卢青教授

报告人介绍:Jennifer Lu is one of the first three faculty members who established the Materials Science and Engineering program at UC Merced ‐‐ Californiaʹs newest research university. Prior to joining UC Merced, she acquired ten years industry experience at IBM and Agilent Technologies. She holds 20 patents related to device fabrication, and consistently publishes her work in high impact factor journals. She was a recipient of the DARPA Young Investigator award. She was an invited participant in the Frontiers of Science and Engineering workshop cosponsored by NAE, NAS, and the Brazilian Academy of Sciences. She serves as the Center Director for Merced NAnomaterials Center for Energy and Sensing (MACES) sponsored by NASA.

报告介绍:Creating New Energy Transduction Material Platforms  Jennifer Lu University of Californiaat Merced The main research theme of Prof. Lus functional nanomaterial lab is to rationally design, synthesize and fabricate highperformance transducer material platforms for energy conversion, storage, artificial intelligence and life science. In this talk, she will discuss the following three research thrusts.Her lab has designed consistent and reproducible 3D carbon scaffolds that can maintain their porous architecture during down-stream processes (e.g. acid treatment and surface functionalization) for maximum mass and electron transport. Currently new surface functionalization strategies are being developed for green energy storage (e.g. aqueous-based batteries for load leveling) and for green energy conversion (e.g. electrocatalysis of the oxygen reduction reaction, a key process for polymer electrolyte membrane fuel cells). Her lab has revealed a new sub-molecular switch, a dibenzocyclooctadiene (DBCOD), a hinge, which consists of a flexible eightmembered ring connecting two rigid phenyl rings. Like proteins, it can undergo a conformational change from twistboat to chair, using a lowenergy stimulus such as near infrared. We have demonstrated that a polymer system that contains a small amount of DBCODs without any processing optimization exhibits an anomalous giant thermal contraction. This thermal contraction value isabout 10 times greater than the second best reported system. The discovery of this new submolecular switch opens a pathway to create low-thermal expansion polymers and enable the development of low-energy driven micro- and nano-actuators. It also offers a means for thermal waste harvesting.