S. W. Hwang

Sungkyunkwan University

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i-10 index

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Co-Authors

Doyeol Ahn

University of Seoul

Yun Seop Yu

Nanjing University of Science and Technology

E. K. Kim

Korea Institute of Science and Technology

Su-Young Son

Konkuk University

C. K. Hyon

National Institute of Advanced Industrial Science and Technology

Bai Hong

Chinese Academy of Sciences

Yoonhyuk Jung

Korea University

M. H. Son

Hanyang University

B. H. Choi

Korea Research Institute of Ships and Ocean Engineering

Jiwon Hwang

McMaster University

Cooperative Institutions

Korea University

Samsung (South Korea)

Seoul National University

University of Seoul

Korea Institute of Science and Technology

Korea Advanced Institute of Science and Technology

Sungkyunkwan University

Pohang University of Science and Technology

Government of the Republic of Korea

Hanyang University

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Research Field

Nano-Structure Fabrication and Manipulation by the Cantilever Oscillation of an Atomic Force Microscope

Japanese Journal of Applied Physics (1999)

C. K. Hyon S.C. Choi S. W. Hwang Doyeol Ahn E. K. Kim

Nanometer scale mechanical processing of semi-insulating GaAs surface was performed using a cantilever oscillating atomic force microscope. Oscillating probe tips induce bond breaking of the GaAs surface and generate nano-meter size patterns. The size of the pattern is shown to be fully controlled by the amplitude and the frequency of the external modulation voltage to the piezo-scanner.

Nanometre

Oscillation (cell signaling)

10.1143/jjap.38.7257

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Citations (11)

Transport through single dopants in gate-all-around silicon nanowire MOSFETs (SNWFETs)

IEEE Silicon Nanoelectronics Workshop (2008)

Bai Hong Yoonhyuk Jung S. W. Hwang Keun Hwi Cho Kim Hwang Yeo

Temperature (T) dependent transport measurements of cylindrical shaped gate-all-around silicon nanowire MOSFETs (SNWFETs) were performed. Single electron tunneling behaviors were observed at 4.2 K and one of the devices exhibited anomalously strong current peak which survived even at room temperature. The observed peak was interpreted as an evidence of transport through single impurities in the channel.

Silicon nanowires

10.1109/snw.2008.5418464

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Citations (0)

Generalized Deep Learning Model for Restoration of Degraded Images under Multiple Degradations

Jiseon Moon S. W. Hwang Jitae Shin

Degradation

10.1109/itc-cscc62988.2024.10628190

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3D Knee Structure Reconstruction from 2D X-rays Based on Generative Deep Learning Models

S. W. Hwang Jae-Joon Lee Jitae Shin

Generative model

10.1109/itc-cscc62988.2024.10628333

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Controllable Capture of Au Nano-Particles by Using Dielectrophoresis

Journal of the Korean Physical Society (2004)

Soonwoo Hong H. K. Kim B. C. Kim Yonghoon Choi Jiwon Hwang

Dielectrophoresis

Source

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Citations (2)

Fabrication and characterization of modulation-doped-field-effect-transistors with antidot-patterned passivation layers

Applied Physics Letters (1996)

S. W. Hwang Yun Seop Yu W. I. Ha T. G. Kim Chao Han

A gate passivation technique for modulation-doped-field-effect-transistors has been proposed and demonstrated. This technique incorporates an antidot-patterned (net-shaped), polymer passivation layer deposited between the gate metal and the heterojunction wafer. Characterization results of the device with the patterned passivation layer show that independent engineering of the threshold voltage and the transconductance has been achieved.

Passivation

Transconductance

Modulation (music)

Field effect

10.1063/1.117623

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Citations (3)

Self-consistent non-Markovian theory of a quantum-state evolution for quantum-information processing

Physical Review A (2002)

Doyeol Ahn Jinhyoung Lee M. S. Kim S. W. Hwang

We study non-Markovian decoherence phenomena by employing projection-operator formalism when a quantum system (a quantum bit or a register of quantum bits) is coupled to a reservoir. By projecting out the degree of freedom of the reservoir, we derive a non-Markovian master equation for the system, which is reduced to a Lindblad master equation in Markovian limit, and obtain the operator sum representation for the time evolution. It is found that the system is decohered slower in the non-Markovian reservoir than the Markovian because the quantum information of the system is memorized in the non-Markovian reservoir. We discuss the potential importance of non-Markovian reservoirs for quantum-information processing.

Operator (biology)

Lindblad equation

10.1103/physreva.66.012302

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Citations (46)

Dynamical responses of quantum dots by pulsed fields

Physical Review B (2005)

Jung Hyun Oh Doyeol Ahn S. W. Hwang

Tunneling currents of a quantum dot induced by pulsed fields are investigated theoretically using time-dependent tunneling rates. Taking into account nonadiabatic effects, we present simple analytic expressions for tunneling currents, which can be used to study the evolution of the occupation probabilities in the quantum dot as well as extract system parameters governing tunneling measurements.

10.1103/physrevb.71.205321

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Citations (5)

Simulation of single-electron/CMOS hybrid circuits using SPICE macro-modeling

Journal of the Korean Physical Society (1999)

Yun Seop Yu Yoontae Jung J. H. Park S. W. Hwang Doyeol Ahn

Spice

Macro

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Citations (12)

Enhanced charge transport behaviors of single-walled carbon nanotube transistors by phenylphosphonic acid doping

Current Applied Physics (2023)

Dong Hyun Lee S. W. Hwang Bongjun Kim Hocheon Yoo

10.1016/j.cap.2023.08.011

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Citations (1)