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 5/21 (Tue) Emeritus Prof. Joong Keun Park (Dept. of MSE, KAIST) ADMINI 2019.05.17 13
Notice Regular 5/17 (Tue) Prof. Su-Hyun Gong (Dept. of Physics, Korea Univ.) ADMINI 2019.05.10 167
Notice Special 5/7 (Tue) Prof. Dr. -ing. Dierk Raabe (MPIE) ADMINI 2019.04.30 111
Notice Regular 4/30 (Tue) Prof. Min Hyuk Park (School of MSE, Pusan National Univ.) ADMINI 2019.04.25 299
Notice Regular 4/23 (Tue) Prof. Seungwu Han (Dept. of MSE, SNU) ADMINI 2019.04.19 123
Notice Regular 4/9 (Tue) Prof. Ji Young Jo (GIST, School of MSE) ADMINI 2019.04.05 142
Notice Regular 4/2 (Tue) Prof. Li Oi Lun (Dept. of MSE, Pusan National Univ.) ADMINI 2019.03.29 177
256 Regular 3/27 (Tue) Prof. Seungbum Hong (KAIST MSE) ADMINI 2018.03.26 657
255 Regular 3/20 (Tue) Prof. Jung In-Ho (Seoul National University, MSE) ADMINI 2018.03.20 578
254 Regular 3/13 (Tue) Prof. Jong-Beom Baek (School of Energy and Chemical Engineering, UNIST) ADMINI 2018.03.13 542
253 Regular 3/6 (Tue) Prof. Seok-Young Ryu (KAIST CS) ADMINI 2018.03.05 444
252 Regular 2/27 (Tue) Dr. Jin-Woo Han (NASA) ADMINI 2018.02.27 518
251 Special 2/20 (Tue) Dr. Jae Beom Jang (Sungkyunkwan Univ) ADMINI 2018.02.19 489
250 Special 2/8 (Thu) Prof. Pei-Chen Su (Nanyang Technological University) file ADMINI 2018.02.05 521
249 Special 2/13 (Tue) Prof. Sungkyu Kim (Northwestern Univ) ADMINI 2018.01.31 546
248 Special 1/9 (Tue) Dr. Choon Won Byeon, ETRI ADMINI 2018.01.09 546
247 12/23 (Sat) Prof. Liangbing (Bing) Hu/Univ. of Maryland file ADMINI 2017.12.22 559
246 Regular 11/28 (Tue) Dr. Woo-Jin Lee (Ministry of Science and ICT.) ADMINI 2017.11.24 1214
245 Special 11/24 (Fri) Takashi NOGUCH (University of the Ryukyus) ADMINI 2017.11.23 890
244 Special 11/21 (Tue) Dr. Young Ki Lee (ETRI) file ADMINI 2017.11.20 1052
243 Special 11/22 (Wed) Prof. Sung Hoon Kang (Johns Hopkins University) file ADMINI 2017.11.20 1285
242 Regular 11/21 (Tue) Dr. Byoung Koun Min, (KIST) ADMINI 2017.11.17 1478
241 Special 11/13 (Mon) Dr. Hans Aage Hiuler (Danish Power System) ADMINI 2017.11.10 1698
240 Special 11/13 (Mon) Prof. Jens Oluf Jensen (Technical University of Denmark) ADMINI 2017.11.10 792
239 Regular 11/14 (Tue) Prof. Jae-Byum Chang (Sungkyunkwan Univ) ADMINI 2017.11.10 759
238 Regular 11/7 (Tue) Prof. Su-Mi Hur (Chonnam National University) ADMINI 2017.11.05 612
237 Regular 10/31 (Tue) Director Jang Sae Young (Samsung Electronics) ADMINI 2017.10.26 621
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