Publications

2025

1. Yung-Chi Yao, Chia-Jung Lee, Yong-Jun Chen, Zi-Xuan Qiu, Chia-Jui Lin, Hongseok Oh*, Ricky W. Chuang*, and Ya-Ju Lee*, "Fabry–Pérot resonant memristor for neuromorphic photonic computing", Advanced Functional Materials, e25651 (2025): e25651. (link)

2. Won Woo Lee, Junhyung Cho, Jaehyun Hur*, Hongseok Oh*, and Hocheon Yoo*, "Device-level nonlinearity and temporal memory in optoelectronic reservoir computing", Nano Convergence, 12, 1 (2025): 57. (link)

3. Yu Bin Kim#, Hyoun Ji Ha#, Jung Min Yun, Min Jung Choi, Kyusun Han, Seunghwan Kim, Soohyung Park, Minsu Park, Hongseok Oh, Jae-Young Yoo, and Seong Jun Kang*, "Transparent UVA photodetectors based on oxide semiconductors for real-time wearable skin protection monitoring", Science Advances, 11, 42 (2025): eaea7218. (link)

4. Won Suk Oh, Seongwon Gim, Hyunhak Jeong, Hyeonjun Baek*, and Hongseok Oh*, "MoTe2 synaptic transistor and its application to physical reservoir computing", RSC Advances, 15, 29 (2025): 24031–39. (link)

5. Hyeonjun Baek*, Jun Beom Park, Hongseok Oh, and Gyu-Chul Yi*, "Wavelength-tunable Zn1−xMgxO nanotube lasers on graphene films", Journal of Applied Physics, 137, 24 (2025): 244301. (link)

6. Taegwan Kim, Eunbee Baek, Hyunsoo Kim, Jaeho Han, Yunsang Lee, Hongseok Oh*, Kwang-Hwi Cho*, and Jonghoon Kim*, "Tunable emission properties of indolizine-based aggregation-induced emission luminogens for white-light emission", JACS Au, (2025) (link)

7. Jehui Kim, Hyunsoo Kim, Kyusun Han, and Hongseok Oh*, "Transparent double-gate IGZO TFTs for high-performance transparent electronics", Semiconductor Science and Technology, 40 (2025): 065005. (link)

8. Heesoo Kim, Anh Thi Dieu Nguyen, Beomjun Kim, Hyerin Jo, Imasda Rahmatulloh, Hyobin Yoo, Hongseok Oh, Aziz Ahmed, Hyeonjun Beak, and Kunook Chung*, "In-situ fabrication of GaN/short-range ordered BN heterostructure light-emitting diodes", NPG Asia Materials, 17, 1 (2025): 1–10.

9. Jaewook Park, Won Suk Oh, Jaegoo Lee, and Hongseok Oh*, "Improving endurance and thermal stability in IGZO-based ReRAM using an a-BN intermediate layer", The Journal of the Korean Physical Society, (2025): 1–7. (link)

10. Yung-Chi Yao, Chia-Jung Lee, Yong-Jun Chen, Jun-Zhi Feng, Hongseok Oh, Chin-Shan Lue, Jinn-Kong Sheu, and Ya-Ju Lee, "All‐inorganic perovskite quantum‐dot optical neuromorphic synapses for near‐sensor colored image recognition", Advanced Science, (2025): 2409933. (link)

11. Junhyun Kim, Hyunsoo Kim, Jaewon Kim, and Hongseok Oh*, "UV response of IGZO tunnel-contact SGTs for low-power and high-sensitivity UV sensor applications", Chinese Journal of Physics, 93, (2025): 340–47. (link)

12. Yedam Lee, Hyunsoo Kim, Hyerin Jo, and Hongseok Oh*, "Fabrication of an in-rich IGZO TFT by co-sputtering of In2O3 and IGZO and characterization of its compensated positive bias stress properties", Transactions on Electrical and Electronic Materials, (2025): 1–7. (link)

2024

13. Asad Ali, Han Ik Kim, Eunsu Lee, Dongha Yoo, Hongseok Oh, and Gyu-Chul Yi*, "Fabrication of a piezoelectric ZnO/ZnMgO coaxial nanorod force sensor on Ti‐wire for intravascular intervention monitoring", Advanced Materials Technologies, (2024): 2401558. (link)

14. Imhwan Kim, Jinseok Ryu, Eunsu Lee, Sangmin Lee, Seokje Lee, Wonwoo Suh, Jamin Lee, Miyoung Kim, Hong Seok Oh, and Gyu-Chul Yi*, "Molecular beam epitaxial In2Te3 electronic devices", NPG Asia Materials, 16, 1 (2024): 1–6. (link)

15. Hyerin Jo#, Jiseong Jang#, Hyeon Jung Park#, Huigu Lee, Sung Jin An, Jin Pyo Hong*, Mun Seok Jeong*, and Hongseok Oh*, "Physical reservoir computing using tellurium-based gate-tunable artificial photonic synapses", ACS Nano, 18, 44 (2024): 30761–73. (link)

16. Asad Ali, Jamin Lee, Kyoungho Kim, Hongseok Oh*, and Gyu-Chul Yi*, "Highly sensitive and fast responding flexible force sensors using ZnO/ZnMgO coaxial nanotubes on graphene layers for breath sensing", Advanced Healthcare Materials, 13, 15 (2024): e2304140. (link)

17. Yedam Lee, Hyunsoo Kim, Hyerin Jo, and Hongseok Oh*, "Fabrication and characterization of high mobility In2O3 TFT", Journal of Flexible and Printed Electronics (유연인쇄전자학술지), 3, 1 (2024): 121–29. (link)

2023

18. Hyerin Jo#, Asad Ali#, Won Suk Oh, Sung Jin An, Gyu-Chul Yi*, and Hongseok Oh*, "Flexible Photonic Synapses Using Vertical ZnO Nanotubes on Graphene Films." IEEE Journal of Selected Topics in Quantum Electronics, 30, 1–8 (2024)  (link)

19. Tan, Hao, et al. "Intraoperative application and early experience with novel high-resolution, high-channel-count thin-film electrodes for human microelectrocorticography." Journal of Neurosurgery 1.aop (2023): 1-12. (link)

20. Jaewon Kim#, Seunghyun Oh#, Hyerin Jo, and Hongseok Oh*, "IGZO thin-film transistors with tunneling contacts: towards power efficient display." Applied Physics Express 16, no. 5 (2023): 054022. (link)

21. Hongseok Oh, Young Joon Hong, Gyu-Chul Yi, Hyeonjun Baek, Dong Ryeol Lee, and Hyun Hwi Lee*, "Initial growth behavior in catalyst-free-grown vertical ZnO nanorods on c-Al2O3, as observed using synchrotron-radiation X-ray scattering." Crystal Growth & Design 23.3 (2023): 1434-1441. (link)

22. Hongseok Oh*, Hyunsoo Kim, and Hyerin Jo, "MeaSSUre:I-V: Open software for transistor characterization using source-meter units." SoftwareX 21 (2023):101318 (link)

2022

23. 오홍석*, "대면적 2차원 나노소재 위에 이종에피택시로 제작된 반도체 구조물 및 이의 광전소자 응용", 세라미스트 25.4 (2022): 412-426. (link)

24. Lee, Yeojin, Hyerin Jo, Kooktae Kim, Hyobin Yoo, Hyeonjun Baek, Dong Ryeol Lee, and Hongseok Oh*. "IGZO synaptic thin-film transistors with embedded AlO x charge-trapping layers." Applied Physics Express 15, no. 6 (2022): 061005. (link)

25. Tchoe, Youngbin, et al. "Human brain mapping with multithousand-channel PtNRGrids resolves spatiotemporal dynamics." Science translational medicine 14.628 (2022): eabj1441. (link)

26. Lee, Sang Heon, et al. "Scalable thousand channel penetrating microneedle arrays on flex for multimodal and large area coverage brainmachine interfaces." Advanced Functional Materials (2022): 2112045. (link)

2021

27. Oh, Hongseok, and Gyu-Chul Yi. "Synthesis of Atomically Thin h-BN Layers Using BCl3 and NH3 by Sequential-Pulsed Chemical Vapor Deposition on Cu Foil." Nanomaterials 12.1 (2021): 80. (link)

28. Oh, Hongseok, et al. "Large-scale, single-oriented ZnO nanostructure on h-BN films for flexible inorganic UV sensors." Journal of Applied Physics 130.22 (2021): 223105. (link)

29. Park, Jun Beom, Minho S. Song, Ramesh Ghosh, Rajendra Kumar Saroj, Yunjae Hwang, Youngbin Tchoe, Hongseok Oh, Hyeonjun Baek, Yoonseo Lim, Bosung Kim, Sang-Woo Kim and Gyu-Chul Yi. "Highly sensitive and flexible pressure sensors using position-and dimension-controlled ZnO nanotube arrays grown on graphene films." NPG Asia Materials 13, no. 1 (2021): 1-9. (link)

30. Oh, Hongseok, and Shadi A. Dayeh. "An Analytical Model for Dual Gate Piezoelectrically Sensitive ZnO Thin Film Transistors." Advanced Materials Technologies (2021): 2100224. (link)

31. Paulk, Angelique C., et al. "Microscale physiological events on the human cortical surface." Cerebral Cortex 31.8 (2021): 3678-3700. (link)

Before SSU

1. Lee, Keundong, Dongha Yoo, Hongseok Oh, and Gyu-Chul Yi. "Flexible and monolithically integrated multicolor light emitting diodes using morphology-controlled GaN microstructures grown on graphene films." Scientific reports 10, no. 1 (2020): 1-7. 

2. Oh, Hongseok, Gyu-Chul Yi, Michael Yip, and Shadi A. Dayeh. "Scalable tactile sensor arrays on flexible substrates with high spatiotemporal resolution enabling slip and grip for closed-loop robotics." Science advances 6, no. 46 (2020): eabd7795. 

3. Tchoe, Youngbin, Minho S. Song, Heehun Kim, Hyeonjun Baek, Joon Young Park, Hongseok Oh, Keundong Lee, Kyungmin Chung, Jerome K. Hyun, and Gyu-Chul Yi. "Individually addressable, high-density vertical nanotube Schottky diode crossbar array." Nano Energy 76 (2020): 104955. 

4. Oh, Hongseok, and Shadi A. Dayeh. "Physics-Based Device Models and Progress Review for Active Piezoelectric Semiconductor Devices." Sensors 20, no. 14 (2020): 3872. 

5. Ganji, Mehran, Angelique C. Paulk, Jimmy C. Yang, Nasim W. Vahidi, Sang Heon Lee, Ren Liu, Lorraine Hossain et al. "Selective formation of porous Pt nanorods for highly electrochemically efficient neural electrode interfaces." Nano letters 19, no. 9 (2019): 6244-6254. 

6. Chung, Kunook, Keundong Lee, Youngbin Tchoe, Hongseok Oh, JunBeom Park, Jerome K. Hyun, and Gyu-Chul Yi. "GaN microstructure light-emitting diodes directly fabricated on tungsten-metal electrodes using a micro-patterned graphene interlayer." Nano Energy 60 (2019): 82-86. 

7. Oh, Hongseok, JunBeom Park, Woojin Choi, Heehun Kim, Youngbin Tchoe, Arpana Agrawal, and Gyu‐Chul Yi. "Vertical ZnO nanotube transistor on a graphene film for flexible inorganic electronics." Small 14, no. 17 (2018): 1800240. 

8. Yi, Gyu Chul, and Hong Seok Oh. "Nano-structure assembly and nano-device comprising same." U.S. Patent 9,853,106, issued December 26, 2017. 

9. Yun, Jiyoung*, Hongseok Oh*, Janghyun Jo, Hyun Hwi Lee, Miyoung Kim, and Gyu-Chul Yi. "Selective-area heteroepitaxial growth of h-BN micropatterns on graphene layers." 2D Materials 5, no. 1 (2017): 015021. (*: Contributed equally)

10. Chung, Kunook, Hongseok Oh, Janghyun Jo, Keundong Lee, Miyoung Kim, and Gyu-Chul Yi. "Transferable single-crystal GaN thin films grown on chemical vapor-deposited hexagonal BN sheets." NPG Asia Materials 9, no. 7 (2017): e410-e410. 

11. Oh, Hongseok, Janghyun Jo, Youngbin Tchoe, Hosang Yoon, Hyun Hwi Lee, Sung-Soo Kim, Miyoung Kim, Byeong-Hyeok Sohn, and Gyu-Chul Yi. "Centimeter-sized epitaxial h-BN films." NPG Asia Materials 8, no. 11 (2016): e330-e330. 

12. Park, Jun Beom, H. Oh, J. Park, N-J. Kim, H. Yoon, and G-C. Yi. "Scalable ZnO nanotube arrays grown on CVD-graphene films." Apl Materials 4, no. 10 (2016): 106104. 

13. Chung, Kunook, Hyobin Yoo, Jerome K. Hyun, Hongseok Oh, Youngbin Tchoe, Keundong Lee, Hyeonjun Baek, Miyoung Kim, and Gyu‐Chul Yi. "Flexible GaN light‐emitting diodes using GaN microdisks epitaxial laterally overgrown on graphene dots." Advanced materials 28, no. 35 (2016): 7688-7694. 

14. Baek, Hyeonjun, Jun Beom Park, Jong-woo Park, Jerome K. Hyun, Hosang Yoon, Hongseok Oh, and Jiyoung Yoon. "ZnO nanolasers on graphene films." Applied Physics Letters 108, no. 26 (2016): 263102. 

15. Hyun, Jerome K., Taehee Kang, Hyeonjun Baek, Hongseok Oh, Dai-sik Kim, and Gyu-chul Yi. "Enhanced second harmonic generation by coupling to exciton ensembles in Ag-coated ZnO nanorods." ACS Photonics 2, no. 9 (2015): 1314-1319. 

16. Oh, Hongseok*, Young Joon Hong*, Kun-Su Kim, Sangmoon Yoon, Hyeonjun Baek, Seoung-Hun Kang, Young-Kyun Kwon, Miyoung Kim, and Gyu-Chul Yi. "Architectured van der Waals epitaxy of ZnO nanostructures on hexagonal BN." NPG Asia Materials 6, no. 12 (2014): e145-e145. (*: Contributed equally)

17. Baek, Hyeonjun, Jerome K. Hyun, Kunook Chung, Hongseok Oh, and Gyu-Chul Yi. "Selective excitation of Fabry-Perot or whispering-gallery mode-type lasing in GaN microrods." Applied Physics Letters 105, no. 20 (2014): 201108. 

18. Xu, Jing, Chunrui Wang, Aijiang Lu, Binhe Wu, Xiaoshuang Chen, Hongseok Oh, Hyeonjun Baek, Gyu-Chul Yi, and Lizhi Ouyang. "Photoluminescence of excitons and defects in ZnSe-based longitudinal twinning nanowires." Journal of Physics D: Applied Physics 47, no. 48 (2014): 485302. 

19. Xu, Jing, Chunrui Wang, Binhe Wu, Xiaofeng Xu, Xiaoshuang Chen, Hongseok Oh, Hyeonjun Baek, and Gyu-Chul Yi. "Twinning effect on photoluminescence spectra of ZnSe nanowires." Journal of Applied Physics 116, no. 17 (2014): 174303. 

20. Chung, Kunook, Hyeonjun Beak, Youngbin Tchoe, Hongseok Oh, Hyobin Yoo, Miyoung Kim, and Gyu-Chul Yi. "Growth and characterizations of GaN micro-rods on graphene films for flexible light emitting diodes." Apl Materials 2, no. 9 (2014): 092512. 

21. Xu, Jing, Aijiang Lu, Chunrui Wang, Rujia Zou, Xiaoyun Liu, Xing Wu, Yuxi Wang et al. "ZnSe‐based longitudinal twinning nanowires." Advanced Engineering Materials 16, no. 4 (2014): 459-465.