신소재공학과

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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.


List of Articles
No. Category Subject Author Date Views
Notice Regular 10/2 (Tue) 김도환 교수 (한양대학교) ADMINI 2018.10.01 30
Notice Regular 9/18 (Tue) 강성준 교수 (Kyung Hee Univ.) ADMINI 2018.09.17 34
Notice Regular 9/11 (Tue) 이병두 박사 (Argonne National Laboratory) ADMINI 2018.09.07 62
Notice Regular 9/4 (Tue) 강기범 교수 (신소재공학과, KAIST) ADMINI 2018.09.03 68
Notice Regular 8/28 (Tue) 김경민 교수 (KAIST, 신소재공학과) ADMINI 2018.08.29 63
Notice Special 8/24 (Fri) Prof. Joel W. Ager III (UC Berkeley, Lawrence Berkeley National Laboratory) file ADMINI 2018.08.20 60
140 Regular 3/24(화) 김성웅교수 (성균관대학교 에너지과학과) TeamLeader 2015.03.18 1739
139 Regular 3/17(화) 안성태 교수 (KAIST 기업가정신진흥원) TeamLeader 2015.03.12 1820
138 Regular 3/10(화) 김준경 분원장 (KIST 전북분원 복합소재기술연구소) TeamLeader 2015.03.06 1504
137 3/4 (수) 한봉태 박사 (University of Maryland) file ADMINI 2015.03.04 1202
136 Regular 2015 가을학기 정기세미나 일정 file TeamLeader 2015.03.04 6836
135 Special 3/3 (수) 조은애 교수 (PEM Fuel Cells for Sustainable Transportation) file admin 2015.03.02 1613
134 Special 12/17 (수) Dr. Ron Jansen (AIST, Tsukuba, Japan) Administrator 2014.12.17 1756
133 Special 12/16 (화) 노 준 홍 박사 (광에너지융합소재연구센터, 한국화학연구원) Administrator 2014.12.17 1777
132 Special 11/28 (금) 오태식 박사 (University of Pennsylvania) Administrator 2014.11.26 2098
131 Special 11/14 (금) Dr. Amanda K. Petford-Long (Argonne National Laboratory) file Administrator 2014.11.04 2047
130 Regular 2014 가을학기 정기세미나 일정 Administrator 2014.08.28 4489
129 Special 8/25 (월) 김 현 석 교수(충남대학교 재료공학과) Administrator 2014.08.26 2539
128 Special 8/21 (목) Prof. Frans Spaepen (Harvard University, School of Engineering and Applied Sciences) Administrator 2014.08.14 2137
127 Special 7/21 (월) Jamie Warner (University of Oxford) Administrator 2014.07.16 2596
126 Special 6/12 (목) 정호용 교수 (Florida State University 부임예정) Administrator 2014.06.09 2830
125 Regular 6/10 (화) 강성모 총장님 (KAIST) Administrator 2014.06.09 2109
124 Regular 6/3 (화) Prof. Alfredo Alexander-Katz (Dept. of MSE, MIT) Administrator 2014.06.03 3081
123 Regular 5/20 (화) 윤석진 박사 (한국과학기술연구원, 연구기획조정본부장) Administrator 2014.05.14 2746
122 Special 5/14 (수) 김윤섭 (Univ. of Michigan, Ph.D. candidate) Administrator 2014.05.14 2570
121 Special 4/30 (수) 김지환 박사 (IBM T.J. Watson Research Center) Administrator 2014.05.01 3070
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