MLの皆様
東工大の竹内一将と申します。
東工大・大岡山キャンパスにて、下記セミナーを開催いたします。
ご関心をお持ちの方々のご来聴を歓迎いたします。
Date: Nov. 30 (Thu) 11:00-12:30
Place: Room 239, Main Bldg., Ookayama Campus, Tokyo Tech
東工大・大岡山キャンパス・本館239号室
Speaker:
Prof. Ivan I. Smalyukh (Univ. Colorado, Boulder)
Title:
Electrically Controlled Dynamics of Knotted Director Fields and Defects
in Liquid Crystals
Abstract:
Active colloids and liquid crystals are capable of locally converting
the macroscopically-supplied energy into directional motion and promise
a host of new applications, ranging from drug delivery to cargo
transport at the mesoscale. In this presentation, I will discuss how
knotted fields and defects in liquid crystals can locally transform
electric energy to translational motion and allow for the transport of
cargo along directions dependent on frequency of the applied electric
field. By combining polarized optical video microscopy and numerical
modeling that reproduces both the equilibrium structures of solitons and
their temporal evolution in applied fields, we uncover the physical
underpinnings behind this reconfigurable motion and study how it depends
on the structure and topology of defects. In my lecture I will show
that, unexpectedly, the directional motion of the studied defects with
and without the cargo arises mainly from the asymmetry in rotational
dynamics of molecular ordering in liquid crystal, rather than from the
asymmetry of fluid flows, as in conventional active soft matter systems.
※英語によるセミナーとなります。 / Seminar will be given in English.
※会場へのアクセスはこちらをご覧ください。/ Access
http://info.phys.sci.titech.ac.jp/access.html
http://info.phys.sci.titech.ac.jp/english/trave_info.html
※当研究室のセミナー情報はこちらでご覧になれます。/ Seminar info
http://lab.kaztake.org/data/seminar/html/index-j.html
http://lab.kaztake.org/data/seminar/html/index.html