Prof. Sin-Doo Lee
School of Electrical Engineering, Seoul National University
Liquid crystals (LCs) have been widely used for a variety of the electro-optic applications including many optical components and displays due to the large birefringence, the simplicity in device design, and high transmittance together with the electrical controllability at low voltages. Among them, the LC displays have been the leading commercial products ranging from high-definition television sets to smart phones in the worldwide market. Beyond the display applications, the elasticity and the fluidity inherent to the LC will lead to new areas of research at a mesoscopic level in nano- and bio-technologies when combined with other functional materials. For example, self-assembled mesoscopic structures in confined geometries not only bridge a nanoworld to a microworld but also provide a scientific route to new research areas on mesoscopic scales.In this talk, I will first discuss the underling physical concepts behind the LC science and technology and typical electro-optic applications within the framework of the elasticity and the structural orders. From microwires made of colloidal particles, directed along periodic wrinkling patterns of reactive mesogens, to lipid bilayers mimicking cell membranes and an artificial iris with spoke patterns of a human eye, I will describe the fascinating and unique features of the LCs that may not be limited to the optical and electro-optical applications.
Sin-Doo Lee is a professor of School of Electrical Engineering at Seoul National University, Korea. He received his BS and MS degrees in solid-state physics from Seoul National University, Korea in 1980 and 1982, respectively, and his Ph.D. degree in liquid crystal physics from Brandeis University, USA in 1988. Prof. Lee is one of the leading interdisciplinary scientists in physics, optics, and device engineering of soft matters such as liquid crystals, organic semiconductors, polymers, colloids, and biomembranes. He has authored more than 330 scientific publications and delivered over 360 conference presentations. Among his scientific and technical achievements with high reputation worldwide, the most significant contribution to the display technologies is the invention of a new class of the vertical alignment mode which has led to the advent of high-performance liquid crystal displays ranging from monitors to high-definition TVs. Prof. Lee’s achievements in soft matter science and technology have been recognized by many of distinguished members of professional societies including International Liquid Crystal Society, American Physical Society, Optical Society of America, Society for Information Displays (SID), and Society for Photonics and Instrumentation Engineers (SPIE). He has been served as a general chair/co-chair, an organizing committee chair, and a member of the program committee of major scientific societies including OSA, SPIE, and SID since early 90's. He is currently a Fellow of OSA, SPIE, and SID.