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Hong-Gyu Park

Seoul National University · Physics and Astronomy

About the Lab

Professor Hong-Gyu Park's research lab specializes in nanophotonics, 2D materials, and neuroengineering, focusing on the design and application of novel photonic devices and neuroprosthetic tools. The lab explores Moiré superlattices for flatband engineering and high-Q nanolasers, leveraging lattice-mismatched structures to achieve stable, tunable optical modes. It also pioneers the integration of 2D materials like h-BN and graphene into flexible, transparent neural probes (NeuroWeb) for high-resolution, optogenetic control and real-time monitoring of neural circuits. The lab's interdisciplinary work bridges nanotechnology, photonics, and neuroscience to enable precise, dynamic interrogation of brain function and disease mechanisms.

nanophotonics2D materialsoptogeneticsMoiré superlatticesneural interfaces

Research Overview

Papers
3
Total Citations
0
Papers (5y)
3
Primary Field
Physics and Astronomy

Research Output Trend

Figures are computed from collected data and may differ slightly.

Publications per year (5y)
3total
2024
2026
Citations per year (5y)
0total
20242026

Selected Papers

3
1
Article|0 citations·2026
Lattice-mismatch Moire laser with strong flatband coupling
Donghwee Kim, Chiwon Shin, Changi Kim, Gil-Woo Lee, You-Shin No, Jin-Kyu Yang, Heonsu Jeon, Hong-Gyu Park
ArXiv.orgOA

Inter-cell and/or interlayer coupling in Moire superlattices can generate flatbands and collective eigenmodes that enable emergent physical phenomena, motivating extensive exploration of Moire-inspired photonic devices. However, the experimental validation of robust inter-cell interactions in Moire photonic structures and the modulation of flatbands for specific photonic applications remain challenging. Here, we propose a lattice-mismatch Moire cavity and demonstrate nanolasers enabled by strong

Atomic and Molecular Physics, and OpticsPhysics and Astronomy
2
Preprint|0 citations·2026
Lattice-mismatch Moire laser with strong flatband coupling
Donghwee Kim, Chiwon Shin, Changi Kim, Gil-Woo Lee, You-Shin No, Jin-Kyu Yang, Heonsu Jeon, Hong-Gyu Park
arXiv (Cornell University)OA

Inter-cell and/or interlayer coupling in Moire superlattices can generate flatbands and collective eigenmodes that enable emergent physical phenomena, motivating extensive exploration of Moire-inspired photonic devices. However, the experimental validation of robust inter-cell interactions in Moire photonic structures and the modulation of flatbands for specific photonic applications remain challenging. Here, we propose a lattice-mismatch Moire cavity and demonstrate nanolasers enabled by strong

Atomic and Molecular Physics, and OpticsPhysics and Astronomy
3
Article|0 citations·2024
광유전학을 이용한 신경 신호의 제어 및 신경 회로 분석
표영우, 박홍규

광유전학은 빛을 이용하여 신경 세포의 활동을 시공간적으로 정밀하게 제어하고 분석할 수 있는 기술로, 특히 신경 회로와 그 기능을 실시간 으로 연구하는 데 유용하다. 본 논문에서는 광유전학 기술의 응용 예시로서, 이차원 물질을 활용한 신경 탐침인 NeuroWeb을 이용한 광유전학 실험에 대해 소개하고자 한다. NeuroWeb은 육방정계 질화 붕소(h-BN)와 그래핀으로 구성되어 두께가 100 nm로 매우 얇고, 개방형 격자 구조로 디자인되어 높은 유연성과 강한 접착력을 가지고 있다. 또한 이차원 나노 소재로 이루어져 있는 만큼 투명도 역시 뛰어나다. 이러한 NeuroWeb의 특성을 바탕으로, 광학적 자극을 통해 특정 영역의 신경 세포 활동을 제어하여 광유전학 실험으로의 응용 가능성을 확인하였다. 특히 신호 전달 경로에 따른 소뇌와 체성감각 피질 사이의 신호 전달 시간을 정량적으로 측정했는데, 체성감각 피질에서 소뇌로, 소뇌에서 체성감각 피질로 전달되는 신경 신호의 전달 시간은 각각 6

Research Areas

Atomic and Molecular Physics, and Optics

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