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 12/5 (Tue) Prof. George Crabtree (Argonne National Laboratory) ADMINI 2017.12.02 170
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213 02/28 (화) 스티브 박 교수 (카이스트 신소재공학과) ADMINI 2017.02.24 676
212 02/20 (월) 특별세미나 안내, 황철성 교수 (서울대) ADMINI 2017.02.14 589
211 02/08 (수) 특별 세미나 안내, 강용호 박사, UC Santa Barbara ADMINI 2017.02.02 860
210 12/23(금) 특별세미나 안내, 김재진 박사님(Chemical Sciences and Engineering Division, Argonne National Laboratory) ADMINI 2016.12.16 707
209 12/13(화) 송재용 박사 (한국표준과학연구원) ADMINI 2016.12.12 761
208 12/6 (화) 엄광섭 교수 (GIST 신소재공학부) ADMINI 2016.12.02 655
207 11/16(수) 특별 세미나 안내, 강승균 박사 (Dept. of MSE, University of Illinois at Urbana-Champaign) ADMINI 2016.11.16 605
206 11/15 (화) 전상은 교수 (경북대학교 신소재공학과) ADMINI 2016.11.14 808
205 11/8(화) Dr. Nikolai Tsvetkov (EEWS, KAIST) ADMINI 2016.11.07 640
204 11/1 (화) 고승환 교수 (서울대학교 기계공학과) ADMINI 2016.11.01 742
203 10/19(수) 특별 세미나 안내 Prof. Wei-Chuan Shih (Departments of Electrical & Computer Engineering, University of Houston) ADMINI 2016.10.18 582
202 10/18(화) 가와사키 메구미 교수 (한양대학교 신소재공학부) ADMINI 2016.10.17 739
201 10/11(화) 특별 세미나 안내 (Prof. Leon Abelmann, KIST Europe) ADMINI 2016.10.07 614
200 10/4(화) 노준석 교수 (포항공과대학교 기계공학과/화학공학과) ADMINI 2016.10.04 666
199 10/4(화) KAIST Self-Assembly Symposium 2016 file ADMINI 2016.09.30 719
» 9/30(금) 특별세미나 안내 (Mark Ediger, University of Wisconsin-Madison / Department of Chemistry) ADMINI 2016.09.30 609
197 9/27(화) 신성태 교수 (고려대학교 세종캠퍼스 디스플레이•반도체물리학과) ADMINI 2016.09.23 777
196 9/20(화) 한상수 박사 (한국과학기술원 계산과학연구센터 선임연구원) ADMINI 2016.09.19 725
195 9/6 (화) 박승용 교수 (The Nelson Mandela African Institution of Science and Technology, Head of the Department of Materials and Energy Science and Engineering) ADMINI 2016.08.29 731
194 8/23(화) 특별세미나 안내 (김지환 교수, MIT) ADMINI 2016.08.22 730