신소재공학과

행사일 20170824 

학과 정기 세미나 안내



■ 제 목: 콜로이덜과 에너지 재료의 구면수차 보정 액상 전자현미경

            (Aberration-corrected liquid electron microscopy of colloidal and energy materials)      

            
■ 연 사: 육종민 교수 (KAIST 신소재공학과)

 

■ 일 시: 8월 29일 (화) 16:00

 

■ 장 소: 응용공학동 (W1) 1층 영상강의실

  

 Abstract : Liquid phase transmission electron microscopy (TEM) has solved many questions in biochemistry, materials science, environmental science, and catalysis. Such observations could greatly benefit from high-resolution offered by aberration-corrected TEMs. However the relatively thick SiN windows necessary to encapsulate the liquid under vacuum and even the liquid trapped between the windows degrades the TEM resolution and signal-to-noise ratio.   Thus, most of critical events are still vague due to the lack of ability to study specimen in liquid with atomic resolution. Here, we introduce a new type of liquid cell using graphene sheets to encase colloidal growth solution for in-situ high-resolution TEM (HR-TEM) imaging. The flexibility, mechanical strength and impermeability of graphene allow for the solution to remain liquid within the TEM vacuum while Pt nanoparticles grow and combine under the influence of the electron beam. We demonstrate in-situ observations of the growth, dynamics, and three-dimensional structures of individual colloidal nanocrystals by using graphene liquid cell TEM. I further show in-situ HR-TEM of lithiation process for diverse anode materials, which are not achievable with any other current methods.

No. Subject Author Date Views
Notice 9/26 (Tue) 이태우 교수 (서울대학교) ADMINI 2017.09.22 13
Notice 2017 신소재공학과 가을학기 정기세미나 ADMINI 2017.09.08 142
234 9/19 (Tue) 이상민 의원 (국회의원) ADMINI 2017.09.15 53
233 9/12 (Tue) Monika Fleischer(Eberhard Karls University Tübingen) ADMINI 2017.09.14 27
232 9/12 (Tue) 유필진 교수 (성균관대학교) ADMINI 2017.09.08 63
231 9/11 (Mon) 조원준 박사 (Lawrence Berkeley National Lab, Berkeley) ADMINI 2017.09.06 78
230 9/13 (Wed) 유인경 박사 (SAIT) ADMINI 2017.09.06 75
» 8/24 (Tue) 육종민 교수 (KAIST 신소재공학과) ADMINI 2017.08.24 226
228 6/16 (Fri) 안복엽 박사 (Harvard University) ADMINI 2017.06.13 858
227 6/12 (Mon) Prof. C. Suryanarayana (University of Central Florida) ADMINI 2017.06.05 295
226 6/2 (fri) Robert M. Ulfig (CAMECA Instruments Inc) ADMINI 2017.06.01 322
225 6/5 (Mon) Dr. Aron Varga/Dr. Andriy Lotnyk ADMINI 2017.05.30 340
224 5/30 (Tue) 고창현 교수 (숙명여자대학교) ADMINI 2017.05.26 399
223 5/23 (Tue) 하돈형 교수 (중앙대학교 융합공학부) ADMINI 2017.05.19 330
222 5/16 (Tue) 조은선 교수 (카이스트 생명화학공학과) ADMINI 2017.05.10 356
221 5/2 (Tue) 이승우 교수 (성균관대학교) ADMINI 2017.04.28 345
220 4/25 (Tue) 최형섭 교수 (서울과학기술대학교) ADMINI 2017.04.20 298
219 4/11 (Tue) 최경숙 교수 (을지대학교 의과대학) ADMINI 2017.04.07 315
218 4/4 (Tue) 장은주 마스터 (삼성전자 종합기술원) ADMINI 2017.03.31 361
217 3/28 (Tue) 임원빈 교수 (전남대학교) ADMINI 2017.03.24 330