e-mail : choidsATkumoh.ac.kr

 ■ Research Interests

Immersive VR/AR, Haptics, Transparent pressure sensor, 3D Touch sensor, Vibrotactile actuator, Focus-tunable lens  

■ Status

Associate Professor (2025.9 - Present) at Kumoh National Insitute of Technology

Assistant Professor (2022.3 - 2025.8) at Kumoh National Insitute of Technology

■ Professional Experience

Assistant Professor (2020.9 - 2022. 02) at Semyung University

 ■ Education

Ph.D. (2015.3 - 2020.8) in Interdisciplinary Program in Creative Engineering, Graduate School, Korea University of Technology and Education

Advisor: Prof. Sang-Youn Kim

M.S (2013 - 2015) in Department of Computer Engineering, Korea University of Technology and Education, Republic of Korea

Advisor: Prof. Sang-Youn Kim

B.S (2007 - 2013) in School of Computer Science and Engineering, Korea University of Technology and Education, Republic of Korea 

Advisor: Prof. Sang-Youn Kim 

 ■ Publications

1. Ganesh Shimoga, Eun-jae Shin, Seok-Han Lee, Mruthyunjayachari Chattanahalli Devendrachari, Dong-Soo Choi, Sang-Youn Kim*, "Electret gel interfaces of phthalo blue and plasticized PVC for enhanced vibrotactile actuation", Sensors and Actuators A: Physical, Vol. 398, 117357, Feb. 2026

2. Ramasubba Reddy Palem, Mruthyunjayachari Chattanahalli Devendrachari, Nadavala Siva Kumar, Mohammad Asif, Durga Prasad Pabba, Soo-Hong Lee*, Sang-Youn Kim*, Dong-Soo Choi*, "Design of interfacial cobalt oxide on titanium boride hybrid nanocomposites for enhanced electrochemical performance",   Journal of Energy Storage, Vol. 133, 118026, Oct. 2025

3. Mruthyunjayachari Chattanahalli Devendrachari, Ganesh Shimoga, Yong-Hae Heo, Seok-Han Lee, Ramasubba Reddy Palem, Harish Makri Nimbegondi Kotresh, Sang-Youn Kim*, Dong-Soo Choi*, "Redox-active phenol red-infused polypyrrole@MWCNT composites for high-performance symmetric supercapacitors", Journal of Energy Storage, Vol. 131, 117518, Sep. 2025 

4. Mruthyunjayachari Chattanahalli Devendrachari, Ramasubba Reddy Palem, Ganesh Shimog, Yong-Hae Heo, Seok-Han Lee, Harish Makri Nimbegondi Kotresh, Sang-Youn Kim*, Dong-Soo Choi*, "Enhanced oxygen evolution reaction by controlled assembly of Co3O4 nanorods on TiB2 nanosheets", Surfaces and Interfaces, Vol. 51, 104619, 2024

5. Ramasubba Reddy Palem, Mruthyunjayachari Chattanahalli Devendrachari, Ganesh Shimoga*, Chinna Bathula, Dae-Young Kim, Kyojung Hwang, Soo-Hong Lee, Dong-Soo Choi*, Sang-Youn Kim*, "Cellulose graphitic carbon directed iron oxide interfaced polypyrrole electrode materials for high performance supercapacitors", International Journal of Biological Macromolecules, Vol. 253, No. 5, 127514, 2023

6. Mruthyunjayachari Chattanahalli Devendrachari, Ganesh Shimoga, Seok-Han Lee, Yong Hae Heo, Harish Makri Nimbegondi Kotresh, Ramasubba Reddy Palem, SangYoun Kim*, Dong-Soo Choi*, "Advancing Energy Storage Competence through Copper Phthalocyanine Stabilized Titanium Nitride Hybrid Nanocomposites for Symmetric Supercapacitors", ACS Applied Energy Materials, Vol. 6, No.21, 11199-11211, 2023

7. Young Hae Heo, Tae-Hoon Kim, Dong-Soo Choi*, and Sang-Youn Kim, "Head-Up Haptic Display using Dual-Mode Haptic Actuator for Vehicles," IEEE Transactions on Industrial Electronics,  Vol. 71, No. 3, 2799, 2023

8. Pattan-Siddappa Ganesh, Mani Govindasamy, Sang-Youn Kim, Dong-Soo Choi, Hyun-U. Ko, Razan Abdullah Alshgari, and Chi-Hsien Huang, "Synergetic effects of Mo2C sphere/SCN nanocatalysts interface for nanomolar detection of uric acid and folic acid in presence of interferences", Ecotoxicology and Environmental Safety, Vol. 253, 114694, 2023

9. Dong-Soo Choi†, Jin Woo Bae†, Seok-Han Lee, Jin Ho Song, Da Wan Kim, Seungmoon Choi, Changhyun Pang*, and Sang-Youn Kim*, "Emotion-interactive empathetic transparent skin cushion with tailored frequency-dependent hydrogel–plasticized nonionic polyvinyl chloride interconnections," Chemical Engineering Journal, Vol. 442, 136142, 2022

10. Mruthyunjayachari Chattanahalli Devendrachari, Ganesh Shimoga, Seok-Han Lee, Yong Hae Heo, Harish Makri  Nimbegondi Kotresh, Musthafa Ottakam Thotiyl, Sang-Youn Kim*, Dong-Soo Choi*, "Anthraquinone-2-sulfonic acid-Loaded Polyaniline Nanostructures: Construction of Symmetric Supercapacitor Electrodes Thereof," Journal of Energy Storage, Vol. 56, 106033, 2022 

11. Dong-Soo Choi†, Jin Woo Bae†, Seok-Han Lee, Jin Ho Song, Da Wan Kim, Seungmoon Choi, Changhyun Pang*, and Sang-Youn Kim*, Emotion-interactive empathetic transparent skin cushion with tailored frequency-dependent hydrogel–plasticized nonionic polyvinyl chloride interconnections," Chemical Engineering Journal, Vol. 442, 136142, 2022 

12. Dong-Soo Choi, SeongWon Jeong, Seok-Han Lee, SiHo Ryu, and Sang-Youn Kim*, "Soft Bidirectional Haptic I/O Module based on Bi-convex Patterned PVC Gel," Smart Materials and Structures, Vol. 30. No. 4, 2021 

13. Jin Woo Bae†, Dong-Soo Choi†, In-Ho Yun, Dong-Heon Han, Seung-Ju Oh, Tae-Hoon Kim, Jeong Ho Cho, Liwei Lin*, and Sang-Youn Kim*, "Electrically Adaptive and Shape-changeable Invertible Microlens," ACS Applied Materials and Interfaces, Vol. 13, No. 8, 2021

14. Ganesh Shimoga, Dong-Soo Choi, and Sang-Youn Kim*, "Bio-Inspired Soft Robotics: Tunable Photo-Actuation Behavior of Azo Chromophore Containing Liquid Crystalline Elastomers," Applied Sciences-Basel, Vol. 11, No. 3, 2021

15. Ganesh Shimoga†, Ramasubba Reddy Palem†, Dong-Soo Choi, Eun-Jae Shin, Pattan-Siddappa Ganesh, Ganesh Dattatraya Saratale, Rijuta Ganesh Saratale, Soo-Hong Lee, and Sang-Youn Kim*, "Polypyrrole-Based Metal Nanocomposite Electrode Materials for High-Performance Supercapacitors", Metals, Vol. 11, No. 6, 2021

16. Tae-Hoon Kim, Hyun-Jeong Kim, Dong-Soo Choi, Yoon-Chae Nah*, and Sang-Youn Kim*, "Testing and evaluation of electro- vari-focal/chromic lens," Smart Materials and Structures, Vol. 30. 2021)

17. Pattan-Siddappa Ganesh, Sang-Youn Kim*, Dong-Soo Choi, Savas Kaya*, Goncagül Serdaroğlu, Ganesh Shimoga, Eun-Jae Shin, and Seok-Han Lee, "Electrochemical investigations and theoretical studies of biocompatible niacin-modified carbon paste electrode interface for electrochemical sensing of folic acid," Journal of Analytical Science and Technology, Vol. 12, 2021 

18. Yong Hae Heo, Dong-Soo Choi†, Do Eun Kim, and Sang-Youn Kim, "Flexible Vibrotactile Actuator based on Dielectric Elastomer for Smart Handheld Devices," Applied Sciences-Basel, Vol. 11, No. 24, 12020, 2021 

19. Dong-Soo Choi, Tae-Hoon Kim, Seok-Han Lee, Changhyun Pang, Jin Woo Bae,* and Sang-Youn Kim*, "Beyond Human Hand: Shape-Adaptive and Reversible Magnetorheological Elastomer-Based Robot Gripper Skin," ACS Applied Materials and Interfaces, Vol. 12, No. 39, 2020 

20. Dong-Soo Choi, Seok-Han Lee, and Sang-Youn Kim*, "Transparent and Soft Haptic Actuator for Interaction with Flexible/deformable Devices," IEEE Access, Vol. 8, 2020

21. Yong Hae Heo†, Dong-Soo Choi†, In-Ho Yun and Sang-Youn Kim*, "A Tiny Haptic Knob Based on Magnetorheological Fluids," Applied Sciences-Basel, Vol. 10, No. 15, 2020 

22. Dong-Soo Choi†, In-Ho Yun†, Tae-Hoon Kim, SangKyu Byeon, and Sang-Youn Kim*, "Development of Haptic Stylus for Manipulating Virtual Objects in Mobile Devices," Actuators, Vol. 9, No. 2, 2020 

23. Dong-Soo Choi, Sang-Youn Kim*, "Transparent Film-Type Vibrotactile Actuator Array and Its Haptic Rendering Using Beat Phenomenon," Sensors, Vol. 19, No. 16, 3490, 2019

24. Joohoon Kang†, Jae Hoon Park†, Dong-Soo Choi, Do Hwan Kim, Sang-Youn Kim*, and Jeong Ho Cho*, "Design of Wavy Ag Microwire Array for Mechanically Stable Multimodal Vibrational Haptic Interface," Advanced Functional Materials, Vol. 29, No. 35, 1902703, 2019

25. Sang-Youn Kim, Yu-Joon Kim, Dong-Soo Choi, and Byeong-Seok Shin*, "Frequency based Tactile Rendering Method for Pin-array Tactile Devices," Journal of Ambient Intelligence and Humanized Computing, 2019

26. Dong-Soo Choi†, Tae-Heon Yang†, Won-Chul Bang, and Sang-Youn Kim*, "Design of a Multi-Functional Module for Visually Impaired Persons," International Journal of Precision Engineering and Manufacturing, Vol. 19, No. 11, 2018

27. Dong-Soo Choi, Jaeu Jeong, Eun-Jae Shin and Sang-Youn Kim*, "Focus-tunable Double Convex Lens based on Non-ionic Electroactive Gel," Optics Express, Vol. 25, No. 17, 2017

28. Dong-Soo Choi, Jaeu Jeong, Eun-Jae Shin, and Sang-Youn Kim*, "Thin and Tiny Focus-tunable Lens for Mobile Devices and Its Measurement System", International Journal of Applied Engineering Research, Vol. 12, No. 23, pp.13286-13294, 2017

29. Jin Woo Bae, Eun-Jae Shin, Jaeu Jeong, Dong-Soo Choi, Jong Eun Lee, Byeong Uk Nam, Liwei Lin*, and Sang-Youn Kim*, "High-Performance PVC Gel for Adaptive Micro-Lenses with Variable Focal Length," Scientific Reports, DOI:10.1038/s41598-017-02324-9, 2017

 ■ Awards and Grants

●한국정보기술학회 우수논문상 2025

●한국정보기술학회 신진과학자상 2025

●한국햅틱스학술대회 우수시연상 2023 

●한국소프트웨어종합학술대회 우수논문상 2022 

●최우수학위논문상 고용노동부 장관상 (박사) 2021

●우수학위논문상 (석사) 2013

● The best demo award, World Haptics Conference 2013

■ Activities

2025 IEEE World Haptics Conference, Student Volunteers Chair (2024-2025)

2024 UCWIT, 집행위원 (2024)

2025 제 3회 한국햅틱스학술대회, 재무위원 (2025)

2024 제 2회 한국햅틱스학술대회, 현장위원 (2024)

2023 제 1회 한국햅틱스학술대회, 학생경연위원 (2023)

한국햅틱스학회, 재무 이사 (2025.1 ~  )

한국정보기술학회 국제학술위원회 부위원장 (2025.1 ~ )

한국정보과학회 CG&I소사이어티 이사(2024. 7~ )

한국햅틱스학회, 총무 이사 (2024.1 ~2024.12 )

한국햅틱스학회, 총무/기획 이사 (2023.1 ~ 2023.12)

Reviewer: 

IEEE Transactions on Haptics (2025~   )

IEEE Transactions on Visualization and Computer Graphics  (2025~  )

ACM Symposium on Virtual Reality Software and Technology (VRST) (2025)

EutoHaptics (2024)

IEEE-ASME Transactions on Mechatronics (2021~2022)  

IEEE International Symposium on Mixed and Augmented Reality (ISMAR) (2024)

Applied Sciences-Basel (2021)

Mobile Information Systems (2022)

 ■ Technical & Special Skills

Languages: English and Korean

Instruments: Impedance analyzer, Dielectric interface, LCR meter, Universal testing machine, Laser scanning vibrometer, and Accelerometer

Modeling: Solidworks, Keyshot, 3Ds Max

Virtual Environment: Unity 3D, Unreal 3 & 4,  

Programming : C, C++, and C#

Etc. : Microcontroller (ARM, Arduino, and Mbed)