CONFERENCES

1.         Seungmin Nam* “Dynamic Structural Color Control Using Chiral Liquid Crystal Elastomers”, in Polymer Society of Korea-Fall Meeting (PSK 2025-Fall), Busan (Korea, 2025) [Invited]

2.         Seungmin Nam*, Seohyun Woo, Ji Yoon Park, and Su Seok Choi  “Reconfigurable Multi-Wavelength Photonic Encryption via Thickness-Modulated Chiral Liquid Crystal ElastomerElectrically tunable photonic devices enabled by soft-functional materials”, in International Meeting on Information Display (IMID 2025), Busan (Korea,  2025)

3.         Seungmin Nam*, Seohyun Woo, Ji Yoon Park, and Su Seok Choi  “Reconfigurable Multi-Wavelength Photonic Encryption via Thickness-Modulated Chiral Liquid Crystal Elastomer”, in International Meeting on Information Display (IMID 2025), Busan (Korea,  2025)

4.         Hyerin Kim, Jung Woo Park, Chaeyeong Yun, Seungmin Nam, Wontae Jung, and Su Seok Choi* “Electrothermally Tunable Cholesteric Liquid Crystal Lasers”, in International Meeting on Information Display (IMID 2025), Busan (Korea,  2025)

5.         Chaeyeong Yun, Seungmin Nam, Hyerin Kim, Wontae Jung, and Su Seok Choi* “Tunable Multicolor and Polarization-Selective Optical Encryption based on In-Situ Polymerized Chiral Liquid Crystals”, in International Meeting on Information Display (IMID 2025), Busan (Korea,  2025)

6.         Seungmin Nam* “Electrically tunable photonic devices enabled by soft-functional materials”, in Optics and Photonics Congress (OPC 2025), Jeju (Korea, 2025) [Invited]

7.         Sang Hyun Han, Jun Hyuk Shin, Hak Jun Yang, Seungmin Nam, Ji Yoon Park, and Su Seok Choi* “Mechano-Optical Visualization of Strain Distribution in Stretchable Serpentine Structures Using Chiral Liquid Crystal Elastomers”, in Korean Meeting on Information Display (KMID 2025), Gangneung (Korea, 2025). [Best paper award]

8.         Chan-Hee Han, Wonbeen Do, Dongjun Kim, Seungmin Nam, Chaeyeong Yun, and Su Seok Choi* “Electrically Switchable Dye-doped Chiral Liquid Crystal Films with Multi-Pixel Electrodes for Independent Operation”, in Materials Research Society of Korea, Fall Conference (MRSK 2024), Busan (Korea, 2024).

9.         Jun Hyuk Shin, Ji Yoon Park, Seungmin Nam, Sang Hyun Han, Hak Jun Yang, and Su Seok Choi* “Extrinsic stretchable methods for strain control using chiral liquid crystal elastomers”, in Materials Research Society of Korea, Fall Conference (MRSK 2024), Busan (Korea, 2024).

10. Chaeyeong Yun, Seungmin Nam, Hyerin Kim, Wontae Jung, and Su Seok Choi* “Multi-Modes Optical Encryption using Wavelength and Polarization Tunable Chiral Liquid Crystals”, in Materials Research Society of Korea, Fall Conference (MRSK 2024), Busan (Korea, 2024). [Best paper award]

11. Wontae Jung, Seungmin Nam, Chaeyeong Yun, Jung Woo Park, and Su Seok Choi* “Optical Characteristics of Thermally Tunable Chiral Liquid Crystals within Chiral Polymer Templates”, in Materials Research Society of Korea, Fall Conference (MRSK 2024), Busan (Korea, 2024).

12. Seungmin Nam, Wontae Jung, Jun Hyuk Shin, and Su Seok Choi*, “Bidirectional Wavelength Tuning in Stretchable Chiral Liquid Crystal Elastomers using Multi-modal Soft Actuators”, in Polymer Society of Korea (PSK 2024), Busan (Korea, 2024).

13. Jun Hyuk Shin, Hak Jun Yang, Ji Yoon Park, Sang Hyun Han, Dong Jun Kim, Seungmin Nam, and Su Seok Choi*, “Strategic Designs for Strain Control Using Mechanochromism”, in Polymer Society of Korea (PSK 2024), Busan (Korea, 2024).

14. Seungmin Nam, Wontae Jung, Jun Hyuk Shin, and Su Seok Choi* “Bidirectional Wavelength Tunable Structural Color using Stretchable Chiral Photonic Elastomers on Multi-Modal Soft Actuators”, in International Meeting on Information Display (IMID 2024), Jeju (Korea, 2024).

15. Jun Hyuk Shin, Hak Jun Yang, Ji Yoon Park, Sang Hyun Han, Seungmin Nam, and Su Seok Choi* “Strain Control for Uniform Distribution Using Mechanochromism”, in International Meeting on Information Display (IMID 2024), Jeju (Korea, 2024).

16. Hyerin Kim, Chaeyeong Yun, Seungmin Nam, Wontae Jung, and Su Seok Choi* “Pixelated Polymer Stabilized Cholesteric Liquid Crystal Cavity for Fluorescent Dye Gain”, in International Meeting on Information Display (IMID 2024), Jeju (Korea, 2024).

17. Chaeyeong Yun, Seungmin Nam, Wontae Jung, Hyerin Kim, and Su Seok Choi*, “Tunable, Patternable, and Polarization Controllable Structural Colors using Chiral Liquid Crystals”, in International Meeting on Information Display (IMID 2024), Jeju (Korea, 2024).

18. Wontae Jung, Seungmin Nam, Chaeyeong Yun, and Su Seok Choi* “Design of Thermally Tunable Chiral Liquid Crystals within Chiral Polymer Template”, in International Meeting on Information Display (IMID 2024), Jeju (Korea, 2024).

19. Seungmin Nam, Dahee Wang, Chaehyun Kwon, Sang Hyun Han, and Su Seok Choi*, “Biomimetic Multi-Color Control utilizing Structural Color of Chiral Liquid Crystal Elastomers”, in The 24th Korea Liquid Crystal Conference (KLCC 2024), Busan (Korea, 2024).

20. Wontae Jung, Seungmin Nam, Chaeyeong Yun, and Su Seok Choi, “Programmable structural color patterns using in-situ polymerization of thermally tunable liquid crystal”, in The 24th Korea Liquid Crystal Conference (KLCC 2024), Busan (Korea, 2024).

21. Chaeyoung Yun, Seungmin Nam, Wontae Jung, and Su Seok Choi*, “Investigation of Chiral Polymer Templates for Thermally Tunable Optical Filters”, in The 24th Korea Liquid Crystal Conference (KLCC 2024), Busan (Korea, 2024).

22. Seungmin Nam, Chaehyun Kwon, Sang Hyun Han, Dahee Wang, and Su Seok Choi*, “Biomimetic Multi-Color Control of Stretchable Photonic Elastomer”, in Materials Research Society of Korea, Fall Conference (MRSK 2023), Gyeongju (Korea, 2023). [Best paper award]

23. Jun Hyuk Shin, Seungmin Nam, Sang Hyun Han, Ji Yoon Park, Chaehyun Kwon, and Su Seok Choi* “Uniform Multi-Pixel-Driven Structural Colors Realized Using Electrically Stretchable Chiral Liquid Crystal Elastomers”, in Materials Research Society of Korea, Fall Conference (MRSK 2023), Gyeongju (Korea, 2023).

24. Chaeyeong Yun, Seungmin Nam, Chaehyun Kwon, Wontae Jung, and Su Seok Choi* “Optimization of Guest-host Liquid Crystal for Eyewear Devices”, in Materials Research Society of Korea, Fall Conference (MRSK 2023), Gyeongju (Korea, 2023). [Best paper award]

25. Wontae Jung, Seungmin Nam, Chaeyeong Yun, and Su Seok Choi* “Wavelength Control of Chiral Liquid Crystals with Polymer Templates for Tunable Optical Filters”, in Materials Research Society of Korea, Fall Conference (MRSK 2023), Gyeongju (Korea, 2023).

26. Seungmin Nam, Chaehyun Kwon, Sang Hyun Han, Dahee Wang, and Su Seok Choi*, “Stretchable Multi-Color Separations Using Structural Colors of Chiral Liquid Crystal Elastomer”, in International Meeting on Information Display (IMID 2023), Busan (Korea, 2023).

27. Jun Hyuk Shin, Seungmin Nam, Sang Hyun Han, Ji Yoon Park, Chaehyun Kwon, and Su Seok Choi*, “Uniform Switching Control of Electrically Stretchable Structural Color”, in International Meeting on Information Display (IMID 2023), Busan (Korea, 2023).

28. Chaeyeong Yun, Seungmin Nam, Chaehyun Kwon, Wontae Jung, and Su Seok Choi*, “Transmittance Control of Guest-Host Liquid Crystal for Eyewear Devices”, in International Meeting on Information Display (IMID 2023), Busan (Korea, 2023).

29. Wontae Jung, Seungmin Nam, Dahee Wang, Chaeyeong Yun, and Su Seok Choi*, “Chiral Liquid Crystal with Polymer Template for Tunable Photonic Band Filter”, in International Meeting on Information Display (IMID 2023), Busan (Korea, 2023).

30. Chaehyun Kwon, Seungmin Nam, Sang Hyun Han, and Su Seok Choi*, “A Study on Optical Responses in Chiral Liquid Crystal Elastomers under Uniaxial and Biaxial Stretching”, in International Meeting on Information Display (IMID 2023), Busan (Korea, 2023). [Best paper award]

31. Seungmin Nam, Dahee Wang, and Su Seok Choi*, “Electrically Stretchable Photonic Wavelength Band Control using a Hybrid Device with Chiral Liquid Crystal Elastomers and Dielectric Soft Actuator”, in The Korea Flexible and Printed Electronics Society (KFPE 2023), Yeosu (Korea, 2023).

32. Wontae Jung, Seungmin Nam, Dahee Wang, Chaeyeong Yun, and Su Seok Choi*, “Study of Temperature-Responsive Chiral Polymer Template”, in The Korea Flexible and Printed Electronics Society (KFPE 2023), Yeosu (Korea, 2023).

33. Jun Hyuk Shin, Seungmin Nam, Sang Hyun Han, Ji Yoon Park, Chaehyun Kwon, and Su Seok Choi*, “Uniform Control of Wavelength Tunable and Stretchable Chiral Gels”, in The Korea Flexible and Printed Electronics Society (KFPE 2023), Yeosu (Korea, 2023). [Best paper award]

34. Seungmin Nam, Dahee Wang, and Su Seok Choi*, “Photonic Band Tuning of Chiral Liquid Crystalline Elastomer using Electrically Stretchable Soft Actuator”, in The 23th Korea Liquid Crystal Conference (KLCC 2023), Samcheok (Korea, 2023).

35. Chaehyun Kwon, Seungmin Nam, and Su Seok Choi*, “Comparison of Optical Properties Change between Uniaxially Stretched and Biaxially Stretched Cholesteric Liquid Crystal Elastomers”, in The 23th Korea Liquid Crystal Conference (KLCC 2023), Samcheok (Korea, 2023). [Best paper award]

36. Wontae Jung, Seungmin Nam, Dahee Wang, and Su Seok Choi*, “Effect of Polymer Template on Chiral Liquid Crystals under Temperature Change”, in The 23th Korea Liquid Crystal Conference (KLCC 2023), Samcheok (Korea, 2023).

37. Seungmin Nam, Jaewook Lee, and Su Seok Choi*, “Switching Parameter Optimization for Improved Chiral Guest-host Liquid Crystals Smart Window”, in Polymer Society of Korea (PSK 2022), Daegu (Korea, 2022).

38. Wontae Jung, Seungmin Nam, Dahee Wang, and Su Seok Choi*, “Optical Characteristics of Chiral Liquid Crystals with Polymer Templates”, in Polymer Society of Korea (PSK 2022), Daegu (Korea, 2022).

39. Dahee Wang, Seungmin Nam, and Su Seok Choi*, “Optical Color Filter Using Chiral Liquid Crystal Polymer Film”, in Polymer Society of Korea (PSK 2022), Daegu (Korea, 2022).

40. Chaehyun Kwon, Seungmin Nam, and Su Seok Choi*, “Optical Properties of Biaxially Stretched Chiral Photonic Elastomer”, in Polymer Society of Korea (PSK 2022), Daegu (Korea, 2022).

41. Seungmin Nam, Dahee Wang, and Su Seok Choi*, “Electrically Stretchable Color Change Using Chiral Photonic Gels”, in International Meeting on Information Display (IMID 2022), Busan (Korea, 2022).

42. Dahee Wang, Seungmin Nam, and Su Seok Choi*, “Analytical Design of Double Layered Chiral Liquid Crystal Color Filter”, in International Meeting on Information Display (IMID 2022), Busan (Korea, 2022).

43. Chaehyun Kwon, Seungmin Nam, and Su Seok Choi*, “Study of Circular Polarization Change in Chiral Liquid Crystal Elastomer Under Uniaxial Stretching”, in International Meeting on Information Display (IMID 2022), Busan (Korea, 2022).

44. Wontae Jung, Seungmin Nam, and Su Seok Choi*, “Study of Perovskite Nanocrystal Dispersion in Chiral Liquid Crystals”, in International Meeting on Information Display (IMID 2022), Busan (Korea, 2022).

45. Jaewook Lee, Seungmin Nam, and Su Seok Choi*, “Improved Optical Transmittance Control of Dye-Doped Liquid Crystals Using Polarization-Independent Molecular Rotation”, in International Meeting on Information Display (IMID 2022), Busan (Korea, 2022).

46. Seungmin Nam, Dahee Wang, and Su Seok Choi*, “Electro-mechano-optical Characteristics of Chiral Photonic Gels,” in Polymer Society of Korea (PSK 2022), Daejeon (Korea, 2022).

47. Dahee Wang, Seungmin Nam, and Su Seok Choi*, “Double Stacked Structure of Cholesteric Liquid Crystals,” in Polymer Society of Korea (PSK2022), Daejeon (Korea, 2022).

48. Dahee Wang, Seungmin Nam, and Su Seok Choi*, “Optical Characteristics of Double Layered Chiral Liquid Crystal,” in OptoWin 2022, Daejeon (Korea, 2022).

49. Seungmin Nam, Dahee Wang, and Su Seok Choi*, “Optical Characteristics of Deformable Photonic Gels based on Chiral Nematic Liquid Crystal Polymers,” in Photonics Conference (PC 2021), Pyeongchang (Korea, 2021).

50. Seungmin Nam, Dahee Wang, and Su Seok Choi*, “Mechanochromic Response Behaviors of Stretchable Chiral Photonic Gels,” in Polymer Society of Korea (PSK 2021), Gyeongju (Korea, 2021).

51. Seungmin Nam, Dahee Wang, and Su Seok Choi*, “Optical characteristics of stretchable chiral photonic film based on chiral liquid crystal via in situ photopolymerization,” in International Meeting on Information Display (IMID 2021), Seoul (Korea, 2021).

52. Dahee Wang, Seungmin Nam, and Su Seok Choi*, “Analytical Study of Bi-Layered Chiral Liquid Crystal Photonic Band Filter,” in International Meeting on Information Display (IMID 2021), Seoul (Korea, 2021).

53. Seungmin Nam, Seung-Won Oh, Jae-Won Huh, Seong-Min Ji, Eunjung Lim, Jinhong Kim, and Tae-Hoon Yoon*, “Optimization of Color and Transmittance in a Dye-doped Chiral-nematic Liquid Crystal Cell,” in International Display Workshop (IDW 2019), Sapporo (Japan, 2019).

54. Jeong-Ho Seo, Seungmin Nam, Seung-Won Oh, Seong-Min Ji, Eunjung Lim, Jinhong Kim, and Tae-Hoon Yoon*, “Analysis of Optical Performance Degradation in an Ion-doped Liquid Crystal Cell,” in International Display Workshop (IDW 2019), Sapporo (Japan, 2019).

55. Seungmin Nam, Seung-Won Oh, Sang-Hyeok Kim, Jae-Won Huh, Eunjung Lim, Jinhong Kim, and Tae-Hoon Yoon*, “Design of a dye-doped liquid crystal cell with a constant transmittance-difference contour map,” in EuroDisplay 2019, Minsk (Belarus, 2019).

56. Seungmin Nam, Seung-Won Oh, Sang-Hyeok Kim, Jae-Won Huh, Eunjung Lim, Jinhong Kim, and Tae-Hoon Yoon*, “Design method for transmittance control of a guest-host liquid crystal cell,” in OptoWin 2019, Hoengseong (Korea, 2019).

57. Seungmin Nam, Seung-Won Oh, Sang-Hyeok Kim, Jae-Won Huh, and Tae-Hoon Yoon*, “Design of guest-host liquid crystal devices for transmittance control,” in The 4th Asian Conference on Liquid Crystals (ACLC 2019), Shenzhen (China, 2019).

58. Seungmin Nam, Seung-Won Oh, Sang-Hyeok Kim, Jae-Won Huh, Eunjung Lim, Jinhng Kim, and Tae-Hoon Yoon*, “Parameter space design of a guest-host liquid crystal device,” in The 20th Korea Liquid Crystal Conference (KLCC 2019), Yeosu (Korea, 2019). [Best paper award]

59. Young-Seo Jo, Tae-Hoon Choi, Jae-Won Huh, Seong-Min Ji, Seungmin Nam, and Tae-Hoon Yoon*, “Switching of an LC Mixture without Ion Dopants between Transparent and Translucent States by the Electro-hydrodynamic Effect,” in International Display Workshop (IDW 2018), Nagoya (Japan, 2018).

60. Seungmin Nam, Seong-Min Ji, Seung-Won Oh, Young-Seo Jo, Sang-Hyeok Kim, Jae-Won Huh, and Tae-Hoon Yoon*, “Optimization of dye mixing for true black color in a dye-doped cholesteric liquid crystal cell,” in Optics and Photonics Congress (OPC 2018), Busan (Korea, 2018).

61. Seong-Min Ji, Seung-Won Oh, Young-Seo Jo, Seung-Min Nam, Sang-Hyeok Kim, Jae-Won Huh, Eunjung Lim, JinHong Kim, Tae-Hoon Yoon*, “Transmittance control of a liquid crystal device using a dye mixture,” in SPIE Organic Photonics + Electronics (SPIE 2018), San Diego (U.S., 2018)

62. Seong-Min Ji, Young-Seo Jo, Seungmin Nam, Seung-Won Oh, Sang-Hyeok Kim, Jae-Won Huh, and Tae-Hoon Yoon*, “Color design of a dye-doped cholesteric liquid crystal cell for transmittance control devices,” in International Meeting on Information Display (IMID 2018), Busan (Korea, 2018).