Soyoung Kim
Sungkyunkwan University · 工学
研究室紹介
Professor Soyoung Kim's research lab specializes in advanced electronic and optoelectronic devices, with a focus on next-generation nanoscale transistors, flexible and printable electronics, and energy-efficient power conversion systems. The lab integrates computational modeling, semiconductor device simulation, and experimental fabrication to develop compact models for nanosheet FETs, design low-emission power converters using chaotic PWM, and advance perovskite-based flexible optoelectronics. Additionally, the lab explores bio-inspired and biotechnological applications, including protein glycosylation control in microbial systems and tissue engineering using cryopreserved dermal matrices.
Research Overview
Research Output Trend
Figures are computed from collected data and may differ slightly.
Selected Papers
15In this paper, we present an artificial neural network (ANN)-based compact model to evaluate the characteristics of a nanosheet field-effect transistor (NSFET), which has been highlighted as a next-generation nano-device. To extract data reflecting the accurate physical characteristics of NSFETs, the Sentaurus TCAD (technology computer-aided design) simulator was used. The proposed ANN model accurately and efficiently predicts currents and capacitances of devices using the five proposed key geom
DC-DC buck converters are widely used in portable applications because of their high power efficiency. However, their inherent fast switching releases electromagnetic emissions, making them prominent sources of electromagnetic interference (EMI). This paper proposes a voltage-controlled buck converter that reduces EMI by using a chaotic pulse-width modulation (PWM) technique based on a chaotic triangular ramp generator. The chaotic triangular ramp generator is constructed from a simple on-chip c
Perovskite-based flexible optoelectronics has drawn increasing attention in various fields, including quantum dot displays, building-integrated photovoltaics, and wearable devices. Flexible and transparent electrodes with outstanding surface properties are required for the commercialization of such devices. In this regard, tin-doped indium oxide (ITO) is considered a suitable material. In device fabrication, cleaning and ultraviolet–ozone (UVO) treatment of ITO/polymer substrates are essential f
A simple way to prevent protein hyperglycosylation in Hansenula polymorpha was found. When glucose oxidase from Aspergillus niger and carboxymethyl cellulase from Bacillus subtilis were expressed under the control of an inducible methanol oxidase (MOX) promoter using methanol as a carbon source, hyperglycosylated forms occurred. In contrast, MOX-repressing carbon sources (e.g., glucose, sorbitol, and glycerol) greatly reduced the extent of hyperglycosylation. Carbon source starvation of the cell
BACKGROUND: CGCryoDerm was first introduced in 2010 and offers a different matrix preservation processes for freezing without drying preparation. From a theoretical perspective, CGCryoDerm has a more preserved dermal structure and more abundant growth factors for angiogenesis and recellularization. In the current study, the authors performed a retrospective study to evaluate freezing- and freeze-drying-processed acellular dermal matrix (ADM) to determine whether any differences were present in a
Neural network (NN)-based compact modeling methodologies are gaining attention due to the challenges of device complexity, narrow model coverage, and SPICE simulation speed in advanced semiconductor technology nodes. As device complexity increases, the number of process and structural variables also increases, which significantly increases the amount of technology computer-aided design (TCAD) simulation data required for NN-based compact modeling. This study proposes a multi-fidelity model and a
Despite the roll-to-roll (R2R) gravure printing method emerging as an alternative sustainable technology for fabricating logic circuits based on p- and n- types of single-walled carbon nanotube thin film transistors ( p,n- SWCNT-TFTs), the wide variation of large threshold voltage ( V th > ~8) in the R2R printed p,n- SWCNT-TFTs prevents the integration of complementary logic circuit. Here, the V th variation of the p,n- SWCNT-TFTs was narrowed down by developing a method of using the first gravu
Abstract Printed devices fabricated using roll-to-roll (R2R) printing technology have been used in low-cost Internet of Things (IoTs), smart packaging and bio-chips. As the area of applications of printed devices broadens, arithmetic units in digital design need to be implemented. In this paper, we propose a stable 4-bit arithmetic logic unit (ALU) design using a minimum number of transistors that can overcome the limitations of printed devices. We propose the use of a 2:1 transmission gate (TG)
尺牘을 통하여 梅泉 黃玹의 삶의 자세와 시대 인식을 탐구하는 작업은 매천이 저술한 문학작품의 성격과 방향을 이해하는 데 중요하고 기본적인 사항이라 할 수 있다. 매천은 在野人의 삶을 固守함으로써 당시 時局과 時務를 자주적 시각에서 자유로이 비판하고 議論을 펼 입지를 확보하였다. 매천은 日帝의 침략으로 國亡이 현실로 임박해 오는 것을 예감하고 후세에 鑑戒로 남길 저술을 삶의 목표로 삼아 역사기록을 위한 著述에 전념하였다. 매천은 실용적 新學問 연마에도 적극적이었다. 新學校 운영에 필요한 모금활동을 전개하였고, 국가 경영에 필요한 학문 연구에 전념하면서 서양에 대한 지식을 전문가적 수준까지 갖추고 있었다. 제자들에게는 서양학의 實學을 배울 것을 권면하였고 동시에 민족주의적 의식과 주체적 사고를 가질 것을 강조하였다. 매천은 新文體 운동을 전개한 중국의 梁啓超에 대해서 깊은 관심을 갖고 있었다. 척독에는 매천의 시대에 대한 인식이 개인의 감정적 색조와 함께 진솔하게 잘 나타나있다. 특히
과학이슈의 정치화 현상은 시민들로 하여금 전문가들이 제공한 객관적 근거보다는 정치적 이해에 의해 왜곡된 정보를 참고로 판단하게 하고 정책에 관한 여론을 양극화시킨다는 점에서 학자들 사이의 학문적 관심과 우려의 대상이 되고 있다. 본 연구는 과학 이슈의 정치적 프레임이 메시지에 대한 사실성, 신뢰도 평가와 이슈 관련 개인의 정서적 태도, 정책적 지지에 어떠한 영향을 미치는지 탐구하기 위해 미세먼지 이슈에 관한 메시지를 조작적으로 제작하여 대학생 118명을 대상으로 실험연구를 실시했다. 본 연구는 2(정치/과학 프레임) x 2(접종메시지 유무) x 2(분노/걱정 정서 처치) 실험 디자인을 활용하여 접종과 정서의 조절효과도 탐구하였다. 분석 결과, 정치 프레임은 과학 프레임에 비해 수용자들이 메시지의 사실성과 신뢰도는 낮게 평가하게 하는 반면, 긍정적인 정서적 태도와 정책적 지지를 유도하는데 효과적인 것으로 나타났다. 상호작용과 관련해서는 미세먼지 이슈 정치화의 부작용에 대해 경고하는 접