报告人：Prof. Linan An (安立楠)，Department of Materials Science and Engineering, University of Central Florida, Orlando, Florida, USA
报告地点：主楼十层小松报告厅
报告时间：6月24日上午8：30
报告题目： Polymer-derived ceramics and their applications for high-temperature sensors
Abstract: Recently, polymer-derived ceramics (PDCs), a new class of materials synthesized by thermal decomposition of polymeric precursors, have received extensive attentions due to their unique processing, structure and properties. Unlike traditional polycrystalline ceramics prepared by powder-metallurgy process, PDCs possess a unique heterogeneous nano-domain structure, which consists of an amorphous matrix and dispersed carbon nano-clusters. Such a structure confers many unique properties to the materials, including excellent thermal stability, high-temperature semiconducting behavior, anomalous piezoresistivity and piezodielectricity. The direct chemical-to-ceramic process of PDCs enables multi-scaled material manipulations. The process also makes PDCs compatible with many microfabrication techniques. One of important applications of PDCs is to make micro-sensors that can be used for turbine engines, nuclear reactors, and coal-gasification units, where the harsh environments (e.g. high temperatures, high pressures, corrosive species, and sometime radiations) prevented the use of currently available sensing technology. Such sensors are a key to further improving the efficiencyfety and reducing the pollution of the systems. In this presentation, I will briefly present current state of the research on material design, structure, properties and sensor application of PDCs.
Bio: Dr. An is currently a professor in Department of Materials Science and Engineering at the University of Central Florida. He received his Ph.D. from Lehigh University in 1996. Prior to joining UCF, he was post-doc at Cornell University and University of Colorado at Boulder. Dr. An’s research focuses on field-assisted material processing and manufacturing, nanomaterials and nanocomposites, polymer-derived ceramics, high-temperature sensors and energy materials and devices. He pioneered research in functional properties and sensor applications of polymer-derived ceramics. Dr. An’s research has been financially supported by NSF, DOE, DOD, NASA, Air Force, Florida State and private companies. He has authored/coauthored more than 160 journal papers, with total citation > 4000 and h-index = 32. Dr. An received several awards including Wang Kuan-Cheng Foundation Award, and Changjiang Endowed Professorship. Dr. An served as an associate editor, member of editorial board, and reviewer for numerical journals in his fields.
（联系人：张景德）