D
Doo-Seung Um
Researcher at Sejong University
Publications - 56
Citations - 1124
Doo-Seung Um is an academic researcher from Sejong University. The author has contributed to research in topics: Thin film & X-ray photoelectron spectroscopy. The author has an hindex of 11, co-authored 51 publications receiving 754 citations. Previous affiliations of Doo-Seung Um include Ulsan National Institute of Science and Technology & University of Cambridge.
Papers
More filters
Journal ArticleDOI
Bioinspired Interlocked and Hierarchical Design of ZnO Nanowire Arrays for Static and Dynamic Pressure-Sensitive Electronic Skins
TL;DR: In this paper, a bioinspired e-skin design of hierarchical micro-and nano-structured ZnO nanowire arrays in an interlocked geometry is suggested for the sensitive detection of both static and dynamic tactile stimuli through piezoresistive and piezoelectric transduction modes, respectively.
Journal ArticleDOI
Octopus-Inspired Smart Adhesive Pads for Transfer Printing of Semiconducting Nanomembranes
TL;DR: By mimicking muscle actuation to control cavity-pressure-induced adhesion of octopus suckers, smart adhesive pads are developed in which the thermoresponsive actuation of a hydrogel layer on elastomeric microcavity pads enables excellent switchable adhesion in response to a thermal stimulus.
Journal ArticleDOI
Transparent and conductive nanomembranes with orthogonal silver nanowire arrays for skin-attachable loudspeakers and microphones
Saewon Kang,Seungse Cho,Ravi Shanker,Hochan Lee,Jonghwa Park,Doo-Seung Um,Youngoh Lee,Hyunhyub Ko +7 more
TL;DR: The NM-based conformal electronics required for acoustic device platforms are addressed, which could be further expanded for application to conformal wearable sensors and health care devices.
Journal ArticleDOI
Broadband omnidirectional light detection in flexible and hierarchical ZnO/Si heterojunction photodiodes
Seongdong Lim,Doo-Seung Um,Minjeong Ha,Qianpeng Zhang,Youngsu Lee,Yuanjing Lin,Zhiyong Fan,Hyunhyub Ko +7 more
TL;DR: In this paper, a hierarchical photodiode design of ZnO nanowires on honeycomb-structured Si (H-Si) membranes is demonstrated to exhibit excellent omnidirectional light-absorption ability and thus maintain high photocurrents over broad spectral ranges (365 to 1,100 nm) for wide incident angles (0° to 70°).
Journal ArticleDOI
High-Performance MoS2/CuO Nanosheet-on-One-Dimensional Heterojunction Photodetectors
TL;DR: The wet-transfer printing of nanosheet-on-1D van der Waals heterostructure photodetectors introduced in this study provides a robust platform for the fundamental study of various combinations of 2D-on -1D heterostructures and their applications in novel heterojunction devices.