关于南达科他矿业理工学院朱正涛博士来我院作报告的通知

发布日期:2019-06-24 作者:    编辑:吴婷    来源:

应物理科学与技术学院兰伟副教授的邀请,南达科他矿业理工学院朱正涛博士将来访我院并做报告,届时欢迎广大师生参加!

题目:Soft, Spongy, and Conductive Materials as Highly Sensitive Strain/Pressure Sensors for Human Motion Monitoring

主讲人:Dr. Zhengtao Zhu

时间:20197110:00

地点:格致楼3016

摘要:Wearable systems consisted of conformable and lightweight biomedical/strain sensors, power sources, and wireless modules have broad application potentials in human motion monitoring, medical, human-machine interface, safety, and soft-robotics.  Our research in this area focuses on combination of conductive nanofibers/polymers and soft scaffold materials (such as elastomers and hydrogels) to design multi-component and multi-functional composite materials. In this talk, I presentour recent workon soft, spongy, and conductive materials as highly sensitive strain/pressure sensors for wearable human motion monitoring.  Three-dimensional (3D) conductive sponge is assembled by freeze-drying of shortened electrospun nanofibers of polyacrylonitrile (PAN), polyimide (PI), and carbon.  The sponge composed of these electrospun nanofibers is ultralight with hierarchical pores; under compressive strain, the resistance change of the 3D conductive sponge shows highsensitivity and stability over a wide range of compressive strain.  Highly flexible and compressible conductive sponge is also prepared by one-step dip coating the commercial melamine sponge (MS) in an aqueous dispersion of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS).  Due to the interconnected porous structure of MS, the conductive PEDOT:PSS@MS has high compressibility and stable piezoresistive response at the compressive strain up to 80%, as well as good reproducibility over 1000 cycles.  Versatile pressure sensors fabricated using these conductive sponges are attached to the different parts of human body; the capabilities of these devices to detect a variety of human motions including speaking, finger bending, elbow bending, and walking are evaluated.  Furthermore, prototype tactile sensory array based on these pressure sensors is demonstrated.

主讲人简介:朱正涛博士现任职于南达科他矿业理工学院(South Dakota School of Mines and Technology)。朱博士分别于1992年和1995年取得复旦大学高分子材料的学士和硕士学位,于2002年在美国纽约州立大学(the State University of New York at Binghamton)取得材料化学博士学位,之后在康奈尔大学(Cornell University, 2002-2004)和伊利诺伊大学厄巴纳-香槟分校(University of Illinois at Urbana-Champaign, 2004-2006)从事博士后研究。朱博士于2006年开始在南达科他矿业理工学院任助理教授,并于2012年进升具有终身教职资质的副教授(Tenured Associate Professor)主要的研究方向是纳米材料和器件在能源的转换和储存,柔性电子器件,化学传感器等方面的应用,共发表论文60余篇,相关研究获得美国自然科学基金,美国航天局,美国化学会等机构的资金支持。