신소재공학과

행사일 20160930 

▣ 특 별 세 미 나 ▣

 

- 제 목Control of molecular orientation, thermal stability, and photochemical stability in vapor-deposited organic glasses

 

- 연 사: Mark Ediger (University of Wisconsin-Madison / Department of Chemistry)

 

- 일 시: 2016 9 30(오후 4

 

- 장 소: 응용공학동 (W1) 1 영상강의실

 

- 추 천김상욱 교수


- 초 록We have used physical vapor deposition and the mobility of glassy surfaces to prepare what are likely the most stable glasses on the planet.(1) These materials have the properties expected for million-year-old glasses, including high density and high mechanical moduli.(2) Surprisingly, these glasses melt like crystals, with a constant velocity transformation front.(3) In addition, they resist photochemical degradation better than liquid-cooled glasses. Molecular orientation in vapordeposited glasses can be highly anisotropic.(4) These properties all depend systematically on the substrate temperature during deposition and can be measured efficiently with high throughput spectroscopic ellipsometry.(5)

 

The interesting properties of vapor-deposited glasses arise from the high mobility of glass surfaces. During deposition, molecules near the free surface have the opportunity to sample many different packing arrangements. This mechanism allows the molecular orientation in vapor-deposited glasses to be predicted from molecular dynamics computer simulations(4, 6) and could be useful for optimizing the performance of organic light emitting diodes (OLEDs).

No. Subject Author Date Views
Notice 10/10 (Tue) 최 주 원장 (POSCO) ADMINI 2017.09.29 249
Notice 2017 신소재공학과 가을학기 정기세미나 ADMINI 2017.09.08 455
217 3/28 (Tue) 임원빈 교수 (전남대학교) ADMINI 2017.03.24 374
216 3/21 (Tue) 박상덕 교수 (서울대학교) ADMINI 2017.03.20 394
215 3/14 (Tue) 김화년 박사 (LG) ADMINI 2017.03.11 392
214 3/7(화) 박중근, 이정용 교수님 기념강연 ADMINI 2017.03.02 410
213 02/28 (화) 스티브 박 교수 (카이스트 신소재공학과) ADMINI 2017.02.24 495
212 02/20 (월) 특별세미나 안내, 황철성 교수 (서울대) ADMINI 2017.02.14 443
211 02/08 (수) 특별 세미나 안내, 강용호 박사, UC Santa Barbara ADMINI 2017.02.02 614
210 12/23(금) 특별세미나 안내, 김재진 박사님(Chemical Sciences and Engineering Division, Argonne National Laboratory) ADMINI 2016.12.16 538
209 12/13(화) 송재용 박사 (한국표준과학연구원) ADMINI 2016.12.12 576
208 12/6 (화) 엄광섭 교수 (GIST 신소재공학부) ADMINI 2016.12.02 514
207 11/16(수) 특별 세미나 안내, 강승균 박사 (Dept. of MSE, University of Illinois at Urbana-Champaign) ADMINI 2016.11.16 463
206 11/15 (화) 전상은 교수 (경북대학교 신소재공학과) ADMINI 2016.11.14 606
205 11/8(화) Dr. Nikolai Tsvetkov (EEWS, KAIST) ADMINI 2016.11.07 509
204 11/1 (화) 고승환 교수 (서울대학교 기계공학과) ADMINI 2016.11.01 605
203 10/19(수) 특별 세미나 안내 Prof. Wei-Chuan Shih (Departments of Electrical & Computer Engineering, University of Houston) ADMINI 2016.10.18 444
202 10/18(화) 가와사키 메구미 교수 (한양대학교 신소재공학부) ADMINI 2016.10.17 560
201 10/11(화) 특별 세미나 안내 (Prof. Leon Abelmann, KIST Europe) ADMINI 2016.10.07 492
200 10/4(화) 노준석 교수 (포항공과대학교 기계공학과/화학공학과) ADMINI 2016.10.04 530
199 10/4(화) KAIST Self-Assembly Symposium 2016 file ADMINI 2016.09.30 541
» 9/30(금) 특별세미나 안내 (Mark Ediger, University of Wisconsin-Madison / Department of Chemistry) ADMINI 2016.09.30 451