신소재공학과

행사일  
3월 25일 (화) 개최되는 봄학기 신소재공학과 정기세미나를 아래와 같이 안내해드립니다.


= 아 래 =


1. 일 시 : 2014. 3. 25 (화), 16:00 ~
2. 장 소 : 응용공학동 1층 영상강의실
3. 연 사 : 황 현 상 교수 (포항공과대학교 신소재공학과)
4. 제 목 : ReRAM: Device Technology & Potential Application for Neuromorphic Computing
5. 발표내용요약(Abstract)

  To compete with NAND FLASH technology, we need to develop stackable, cross-point ReRAM device. Although various materials have been reported, it is difficult to meet device criteria such as high speed operation, low power switching, switching uniformity, endurance, long-term retention and selection device for cross-point array. We have investigated various ReRAM devices such as interface switching type (reactive metal/perovskite oxides), filament type (various single layer binary oxides, and bilayer oxides) and PMC type (Cu-doped carbon, Ag-doped oxide). We found that the scaling of device area and film thickness improve device performance. Understanding of switching mechanisms and atomic scale film control are necessary to meet the various requirements for future high density nonvolatile memory devices. To integrate cross-point (4F2) ReRAM device array, we need to develop bi-directional selector device to suppress the sneak current path through the unselected devices. Although various selector candidates were recently reported, several problems such as insufficient current density at set/reset operations for nano-scale devices, low selectivity, and poor endurance have been raised. In this talk, I will report two types of selection devices, called the varistor-type bidirectional switch (VBS) and NbOx based threshold switching device with excellent thermal stability. A highly non-linear VBS showed superior performances including high current density (>3x107A/cm2) and high selectivity (~104). Ultrathin NbO2 exhibits excellent TS characteristics such as high temperature stability (~160oC), good switching uniformity, and extreme scalability. In addition, we also investigated the feasibility of a high speed pattern recognition system using 1k-bit cross-point synaptic ReRAM array. Learning capability of a neuromorphic system comprising ReRAM synapses and CMOS neurons has been confirmed experimentally.

No. Subject Author Date Views
Notice 7/25 (Wed) 김창섭 박사 (Department of MSE, MIT) ADMINI 2018.07.24 16
Notice 7/13 (Fri) Prof. Dong Ryeol Whang (Johannes Kepler University Linz,Austria) ADMINI 2018.07.09 13
Notice 6/5 (Tue) 이성환 교수 (Baylor University) ADMINI 2018.06.05 54
Notice 5/29 (Tue) 오상호 교수 (연세대학교 의과대학 피부과학교실) ADMINI 2018.05.29 51
Notice 5/15 (Tue) 김명길 교수 (중앙대 화학과) ADMINI 2018.05.15 93
132 11/28 (금) 오태식 박사 (University of Pennsylvania) Administrator 2014.11.26 2095
131 11/14 (금) Dr. Amanda K. Petford-Long (Argonne National Laboratory) file Administrator 2014.11.04 2044
130 2014 가을학기 정기세미나 일정 Administrator 2014.08.28 4486
129 8/25 (월) 김 현 석 교수(충남대학교 재료공학과) Administrator 2014.08.26 2536
128 8/21 (목) Prof. Frans Spaepen (Harvard University, School of Engineering and Applied Sciences) Administrator 2014.08.14 2134
127 7/21 (월) Jamie Warner (University of Oxford) Administrator 2014.07.16 2593
126 6/12 (목) 정호용 교수 (Florida State University 부임예정) Administrator 2014.06.09 2826
125 6/10 (화) 강성모 총장님 (KAIST) Administrator 2014.06.09 2106
124 6/3 (화) Prof. Alfredo Alexander-Katz (Dept. of MSE, MIT) Administrator 2014.06.03 3078
123 5/20 (화) 윤석진 박사 (한국과학기술연구원, 연구기획조정본부장) Administrator 2014.05.14 2743
122 5/14 (수) 김윤섭 (Univ. of Michigan, Ph.D. candidate) Administrator 2014.05.14 2566
121 4/30 (수) 김지환 박사 (IBM T.J. Watson Research Center) Administrator 2014.05.01 3067
120 4/29 (화) Dr. Aron Walsh (Univ. of Bath, UK) Administrator 2014.05.01 2097
119 4/29 (화) 박상희 교수 (KAIST 신소재공학과) Administrator 2014.04.23 3051
118 4/22 (화) 조은애 박사 (Fuel Cell Research Center, KIST) Administrator 2014.04.21 3449
117 4/15 (화) 김수호 박사 (Chief Technology Offiicer, Alantum Corporation) Administrator 2014.04.11 3032
116 4/8(화) 이종흔 교수 (고려대학교 신소재공학부) Administrator 2014.04.08 3975
115 4/1(화) 장호원 교수 (서울대학교 재료공학부) Administrator 2014.03.26 2935
114 3/27 (목) 남성욱 박사 (IBM T.J. Watson Research Center, Research Scientist) Administrator 2014.03.24 3575
» 3/25 (화) 황현상 교수 (포항공과대학교 신소재공학과) Administrator 2014.03.21 3145