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
289 Regular [공지] 2012년 봄학기 신소재공학과 정기세미나 안내 file Administrator 2012.02.13 14456
288 Regular [공지] 2011년 가을학기 신소재공학과 정기세미나 안내 file Administrator 2011.11.04 15351
287 Special [WCU-FS 사업단 세미나] 6/7 (화) 조정대 박사 (한국기계연구원) Administrator 2011.11.04 13679
286 Special [WCU-FS 사업단 세미나] 6/29 (수) 16:00 Prof. Digby D. Macdonald (Pennsylvania State University) Administrator 2011.11.04 10529
285 Special [WCU 세미나] 5/12 (목) 16:00 윤웅찬 교수 (부산대학교 화학과) Administrator 2011.11.04 9019
284 Special [Special Seminar] 9/30(Fri) Mark Ediger (University of Wisconsin-Madison / Department of Chemistry) ADMINI 2016.09.30 1367
283 Special [Special Seminar] 8/23(Tue) Prof. Ji Hwan Kim (MIT) ADMINI 2016.08.22 1990
282 Special [Special Seminar] 6/8(Wed) Prof. Sunghwan Lee (Dept. of Mechanical Engineering, Baylor University) file ADMINI 2016.05.25 1828
281 Special [Special Seminar] 6/15(Wed) Prof. Chanho Pak (GIST) ADMINI 2016.06.10 2033
280 Special [Special Seminar] 12/23(Wed), Dr. Jaejin Kim (Chemical Sciences and Engineering Division, Argonne National Laboratory) ADMINI 2016.12.16 1631
279 Special [Special Seminar] 11/16(Wed), Dr. Seung-Kyun Kang (Dept. of MSE, University of Illinois at Urbana-Champaign) ADMINI 2016.11.16 1475
278 Special [Special Seminar] 10/19(Wed), Prof. Wei-Chuan Shih (Departments of Electrical & Computer Engineering, University of Houston) ADMINI 2016.10.18 1408
277 Special [Special Seminar] 10/11(Tue), Prof. Leon Abelmann (KIST Europe) ADMINI 2016.10.07 1283
276 Special [KINC 세미나] 5/11 (수) 16:00 이관형 박사 (Department of Mechanical Engineering, Columbia University) Administrator 2011.11.04 9670
275 Special [KI 목요세미나] 9/22 (목) 16:00 정희태 교수 (KAIST 생명화학공학과) Administrator 2011.11.04 8910
274 Special [KI 목요세미나] 1/6 (목) 11:00 민범기 교수 (KAIST 기계공학전공) Administrator 2011.11.04 8110
273 Special [KCC Open Seminar] 3/23 (수) 12:00 김필한 교수 (KAIST 나노과학기술대학원) Administrator 2011.11.04 9411
272 Special [KCC Open Seminar] 2/23 (수) 12:00 최민기 교수 (KAIST 생명화학공학과) Administrator 2011.11.04 9323
271 Regular 9/8(Tue) Prof. Suk-Joong L. Kang (Dept. of MSE, KAIST) TeamLeader 2015.09.02 2844
270 Special 9/7 (금) Prof. Thomas P. Russell ( University of Massachusetts) Administrator 2012.08.30 7082
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