S
Sung-Yool Choi
Researcher at KAIST
Publications - 230
Citations - 10401
Sung-Yool Choi is an academic researcher from KAIST. The author has contributed to research in topics: Graphene & Graphene nanoribbons. The author has an hindex of 46, co-authored 210 publications receiving 8675 citations. Previous affiliations of Sung-Yool Choi include Hanyang University & Korea University of Science and Technology.
Papers
More filters
Journal ArticleDOI
Switching terahertz waves with gate-controlled active graphene metamaterials
Seunghoon Lee,Muhan Choi,Muhan Choi,Teun-Teun Kim,Teun-Teun Kim,Seungwoo Lee,Ming Liu,Xiaobo Yin,Hongkyw Choi,Seung S. Lee,Choon-Gi Choi,Sung-Yool Choi,Xiang Zhang,Xiang Zhang,Bumki Min +14 more
TL;DR: It is demonstrated that substantial gate-induced persistent switching and linear modulation of terahertz waves can be achieved in a two-dimensional metamaterial, into which an atomically thin, gated two- dimensional graphene layer is integrated.
Journal ArticleDOI
Switching teraherz waves with gate-controlled active graphene metamaterials
Seunghoon Lee,Muhan Choi,Teun-Teun Kim,Seungwoo Lee,Ming Liu,Xiaobo Yin,Hongkyw Choi,Seung S. Lee,Choon-Gi Choi,Sung-Yool Choi,Xiang Zhang,Bumki Min +11 more
TL;DR: In this paper, the gate-induced persistent switching and linear modulation of terahertz waves can be achieved in a two-dimensional artificial material, referred to as a metamaterial, into which an atomically thin, gated twodimensional graphene layer is integrated.
Journal ArticleDOI
Graphene oxide thin films for flexible nonvolatile memory applications.
Hu Young Jeong,Jong Yun Kim,Jong Yun Kim,Jeong Won Kim,Jin Ok Hwang,Ji-Eun Kim,Jeong Yong Lee,Tae Hyun Yoon,Byung Jin Cho,Sang Ouk Kim,Rodney S. Ruoff,Sung-Yool Choi +11 more
TL;DR: The microscopic origin of the bipolar resistive switching behavior was elucidated and is attributed to rupture and formation of conducting filaments at the top amorphous interface layer formed between the graphene oxide film and the top Al metal electrode, via high-resolution transmission electron microscopy and in situ X-ray photoemission spectroscopy.
Journal ArticleDOI
Effective Liquid-Phase Exfoliation and Sodium Ion Battery Application of MoS2 Nanosheets
TL;DR: A facile liquid-phase exfoliation method is reported to improve theExfoliation efficiency for single-layer MoS2 sheets in 1-methyl-2-pyrrolidinone (NMP) with a sodium hydroxide (NaOH) assistant and stable operation of sodium-ion battery is demonstrated by using the exfoliated MoS1-rGO composite as anode materials.
Journal ArticleDOI
Versatile carbon hybrid films composed of vertical carbon nanotubes grown on mechanically compliant graphene films.
Duck Hyun Lee,Ji-Eun Kim,Tae Hee Han,Jae Won Hwang,Seokwoo Jeon,Sung-Yool Choi,Soon Hyung Hong,Won-Jong Lee,Rodney S. Ruoff,Sang Ouk Kim +9 more
TL;DR: This research highlights the need to understand more fully the interaction between materials science and nanofiltration, as well as the types of materials that can be incorporated into electronics and telecommunications systems.