关于卢青博士学术报告的通知

报告题目：Creating Active Inorganic Nanostructures via Solution and Thin FilmSelf-assembly of Block Copolymers for a Multitude of Applications 报告人：卢青（Jennifer_Lu） 地点：教八107 时间：2006年10月23日（周一）上午9:00-10:00 欢迎光临！ 浙江大学化学系 附1 卢青博士简介： Jennifer Lu will join the School of Engineering at the University of California,Merced campus, in Jan. 2007. For the past two years, her research work has beenfocused on using bottom-up self-assembly techniques to synthesize nanostructures.Her work in producing highly ordered nanostructures including carbon nanotubes hasbeen well received in the research community and resulted in numerous publicationsand conference presentations. Recently, she has pioneered a straightforward methodof generating a silver nanotextured surface that exhibits uniform and greatlyenhanced Raman scattering for biomolecule identification and sensing. Prior tothat, she played a variety of important roles in product research and developmentat IBM and Agilent. She has filed 36 patent applications and 16 of these havebeen granted. She has also published almost a dozen of papers on nanosynthesis. She received her M.S. and Ph.D. from the Center of Macromolecular Science andEngineering at the University of Michigan, MS in Materials Science and Engineeringfrom Drexel University and BS in Materials Science and Engineering from ShanghaiUniversity. Her research will be focused on nanofabrication, particularly in employingself-assembly concepts to control and scale nanostructures. Because of the greatpotential impact of nanotechnology, burgeoning efforts in synthesis ofnanomaterials and development of new devices that utilize their unique propertieshave been sprouted. However, these efforts have achieved limited success to datelargely due to the lack of precise control of properties and placement ofnanostructures. Developing robust synthesis methods to generate well-defined anddefect-free nanostructures is critical for understanding their physical propertiesand the key for bringing nanotechnology into fruition. This research program willaddress the challenge of synthesizing nanostructures with precise control ofproperties and location. This includes (1) developing synthetic methods forfabricating highly ordered inorganic nanostructures; (2) conducting systematicresearch to gain detailed understanding of synthesis mechanisms; (3)characterizing the properties of such nanostructures and (4) exploring theirpotential applications in optoelectronic and biological sensing devices. 附2 报告摘要： Nanostructures such as carbon nanotubes and semiconducting nanowires offer greattechnological promise due to their remarkable properties. The lack of rationalsynthesis methods to fabricate these 1D nanostructures with desirable andconsistent properties at predefined locations prevents realizing their highlytouted properties. In this talk, I will present methods for producing a variety ofhighly ordered catalytically active transition metal nanostructures, ranging fromsingle metallic nanoclusters of Fe, Co, Ni and Au to bimetallic nanoparticles suchas Ni/Fe with uniform and tunable size and spacing, using self-assembled blockcopolymer templates. These nanostructures have been demonstrated to be excellentcatalyst systems for the synthesis of carbon nanotubes and silicon nanowires. Highquality, small diameter carbon nanotubes and silicon nanowires with narrow sizedistribution have been successfully produced. Since this block copolymer templateapproach is fully compatible with conventional top-down photolithography,spatially selective growth of carbon nanotubes and silicon nanowires on surfacesor carbon nanotubes suspended across trenches have been obtained using standardsemiconductor processing techniques. The ability of block copolymer templates tocontrol catalysts at the nano-, micro- and macro-scales enables controllablesynthesis, facilitates fundamental studies of growth mechanisms and thoroughinvestigation of their properties, and also paves a pathway for commercializationof devices based on these 1D nanobuilding blocks. Examples of electronic andbiological applications harnessed by this method will be described. Besides creating well-defined, highly ordered and discretecatalytically active metal-containing nanostructures, nanotextured Ag and Ausurfaces have also been generated by using self-assembled inorganic blockcopolymer thin films. Greatly enhanced and uniform Raman scattering has beenobserved on the nanotextured Ag surfaces. This simple and straightforward methodfor producing SERS (surface enhanced Raman scattering) active substrates offers apromising method of fabricating SERS active sensor chips. SPR(surface plasmonresonance) on a nanotextured Au surface is highly angular sensitive suggesting itspotential application for SPR based biodetection. Future proposed research directions will be discussed during the talk