신소재공학과

Seminar

Extra Form
Date 20181120

MSE Regular Seminar



■ Title :  Biomimetic functional hydrogels with anisotropic structures 

           

■ Speaker :  Prof. Youn Soo Kim (Department of MSE, POSTECH)  

 

■ Date and Time :  11/20 (Tue) 16:00

 

■ Venue :  Applied Engineering Building (W1) 1st Floor, Multimedia Seminar Room

 

 Host :  Prof. Hyuck-Mo Lee  

  

 Abstract :  

 

 

 

Scheme 1.  Schematic representation of the preparation of anisotropic hydrogel

containing cofacially oriented 2D materials.

 

The development of muscle-like hydrogel actuators that can convert chemical energies into large, quick, and unidirectional motions is one of the long-standing research topics in materials sciences. Various hydrogel actuators have been developed so far, however, their actuation has inherent limitation in efficiency, because of their primitive actuation mechanism simply relying on the volume changes through the swelling and deswelling of gel networks. In addition, the volume changes are usually isotropic and not suitable to produce anisotropic motion. These limitations could be overcome through the imitation of mechanisms shown in Nature’s living creatures, offering an enormous potential for the development of functional soft materials that may improve our life.  As represented by muscular tissues, some biological tissues are composed of numerous nanoscopic subunits that are assembled into anisotropically oriented structures extending over a macroscopic size regime.  Such hierarchical structures are the origin of the excellent biological functions, and their reproduction in artificial systems is a great challenge. To address this challenge, we have recently developed polymer networks with 'single-crystal-like' structural order, where 2D-shaped inorganic materials were employed as constituents. This 3D network of this hydrogel is composed of a stimuli-responsive polymer, so that the polarity and dynamics of the gel matrix are abruptly changed in response to external stimuli, which causes the switching of the intensity of the ‘embedded electrostatics’. Thereby, it produces quick and anisotropic deformation of the hydrogel. In this presentation, their unprecedented functions originating from anisotropic structures will be discussed.


(1) Y.S. Kim, M. Liu, Y. Ishida, Y. Ebina, M. Osada, T. Sasaki, T. Hikima, M. Takata, T. Aida, Nature Mat. 201514, 1002.

(2) Sano, K.; Kim, Y. S.; Ishida, Y.; Ebina, Y.; Sasaki, T.; Hikima, T.; Takata, M.; Aida, T. Nature Commun. 20167, 12559.

(3) Kim, Y. S.; Tamate, R.; Akimoto, A. M.; Yoshida, R. Mater. Horiz. 20164, 38.


List of Articles
No. Category Subject Author Date Views
Notice Regular 03/26 (Tue) Prof. Jae-Byum Chang (KAIST MSE) ADMINI 2019.03.22 9
Notice Regular 03/19 (Tue) Dr. YangKoo Cho (Korea Research Institute of Standard and Science) ADMINI 2019.03.18 95
Notice Regular 3/12 (Tue) Prof. Chang Dong Yoo (KAIST EE) ADMINI 2019.03.12 93
Notice Regular 2/26 (Tue) Dr. Hye-Young Kim (Senior Venture Association) ADMINI 2019.02.22 201
Notice Special 1/28 (Mon) Prof. Yongjin Lee (Shanghai Tech Univ.) ADMINI 2019.01.23 518
Notice Regular 12/4 (Tue) Prof. Doo Seok Jeong (Hanyang Univ., Department of MSE) ADMINI 2018.11.30 864
Notice Regular 11/27 (Tue) Prof. Seong-Jun Jeong (Soongsil Univ.) ADMINI 2018.11.26 709
249 Special 2/13 (Tue) Prof. Sungkyu Kim (Northwestern Univ) ADMINI 2018.01.31 540
248 Special 1/9 (Tue) Dr. Choon Won Byeon, ETRI ADMINI 2018.01.09 540
247 12/23 (Sat) Prof. Liangbing (Bing) Hu/Univ. of Maryland file ADMINI 2017.12.22 552
246 Regular 11/28 (Tue) Dr. Woo-Jin Lee (Ministry of Science and ICT.) ADMINI 2017.11.24 1203
245 Special 11/24 (Fri) Takashi NOGUCH (University of the Ryukyus) ADMINI 2017.11.23 878
244 Special 11/21 (Tue) Dr. Young Ki Lee (ETRI) file ADMINI 2017.11.20 1044
243 Special 11/22 (Wed) Prof. Sung Hoon Kang (Johns Hopkins University) file ADMINI 2017.11.20 1280
242 Regular 11/21 (Tue) Dr. Byoung Koun Min, (KIST) ADMINI 2017.11.17 1456
241 Special 11/13 (Mon) Dr. Hans Aage Hiuler (Danish Power System) ADMINI 2017.11.10 1524
240 Special 11/13 (Mon) Prof. Jens Oluf Jensen (Technical University of Denmark) ADMINI 2017.11.10 786
239 Regular 11/14 (Tue) Prof. Jae-Byum Chang (Sungkyunkwan Univ) ADMINI 2017.11.10 755
238 Regular 11/7 (Tue) Prof. Su-Mi Hur (Chonnam National University) ADMINI 2017.11.05 603
237 Regular 10/31 (Tue) Director Jang Sae Young (Samsung Electronics) ADMINI 2017.10.26 616
236 Special 11/6 (Mon) Prof. Redouane Borsali (Grenoble Alpes University) ADMINI 2017.10.26 773
235 Special 11/6 ~ 7 Prof. Erik Luijten (Northwestern University) file ADMINI 2017.10.25 642
234 Special 10/23 ~ 24 Prof. Paul C. McIntyre (Stanford University) file ADMINI 2017.10.25 566
233 Regular 10/24 (Tue) Prof. Sun-Jae Kim (Sejong, Univ) ADMINI 2017.10.20 1006
232 Special 10/19 (Thu) Prof. Sang Cheol, Jung (Suncheon University) ADMINI 2017.10.18 1328
231 Regular 10/10 (Tue) Dr. Joo Choi (POSCO) ADMINI 2017.09.29 2253
230 Regular 9/26 (Tue) Prof. Tae-Woo Lee (Seoul National University) ADMINI 2017.09.22 1484
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