Ph.D. Candidate · Korea University

Hwanseok Chang

장환석

I am a Ph.D. candidate in Materials Science and Engineering at Korea University, specializing in nanophotonics and 3D nanofabrication.

I am always open to collaboration with researchers in nanophotonics, metamaterials, and advanced manufacturing.

Please feel free to reach out if you are interested.

Hwanseok Chang 장환석

About

My research centers on inverse design strategies for complex nanostructures and the realization of architected 3D photonic systems. By combining computational electromagnetics (FDTD, RCWA) with advanced fabrication techniques such as electron-beam lithography and atomic layer deposition (ALD), I develop physically consistent design frameworks that translate abstract optical functionalities into experimentally realizable nanostructures.

My broader goal is to establish scalable and physically interpretable design methodologies for controlling light–matter interactions in high-dimensional photonic systems.

Research Interests

Inverse design of nanofabrication
Metamaterials
Applications of 3D nanoarchitecture

Skills

Simulation & Programming

FDTD (Lumerical) RCWA (Lumerical) Python MATLAB

Nanofabrication

E-beam Lithography 3D Lithography Mask Aligner ALD E-beam Evaporator FIB Ellipsometer

Material Characterization

SEM TEM XRD XPS Raman GIWAXS

Publications

Total 3 journal articles  ·  2 patents / 1st & corresponding: 2  ·  Co-authored: 1
† equal contribution / * corresponding author

prep

In Preparation

Inverse design of ...

H. Chang, ...

Target journal : Nature

[4]

paper cover
Published

Spectrally Encoded Proximity-Field Nanopatterning

Junhyung Park†, Yun Hyeong†, Hwanseok Chang, Dohyun Kim, Joonkyo Jung, Seokwoo Jeon, Jonghwa Shin*

Advanced Optical Materials, e03274, (2026)

[IF=7.2, Optics, Q1 (TOP 12.0%)]

[3]

paper cover
Published

Incoherent dielectric tensor tomography for quantitative three-dimensional measurement of biaxial anisotropy

Juheon Lee, Yeon Wook Kim, Hwanseok Chang, Herve Hugonnet, Chulmin Oh, Sehyeon Lee, Seung-Mo Hong, Seokwoo Jeon, YongKeun Park*

Nature Photonics, 1-10, (2026)

[IF=32.9, Physics, Applied, Q1 (TOP 0.8%)]

[2]

paper cover
Published

Graphene-based thermoelectric materials: toward sustainable energy-harvesting systems

Jewook Kim†, Hwanseok Chang†, Gwangmin Bae, Myungwoo Choi*, Seokwoo Jeon*

Chemical Communications, 61(27), 5050-5063, (2025)

[IF=4.2, Chemistry, Multidisciplinary, Q2 (TOP 35.1%)]

[1]

paper cover
Published

Rational design of arbitrary topology in three-dimensional space via inverse calculation of phase modulation

Hwanseok Chang†, Sungjoo Kwon†, Gwangmin Bae*, Seokwoo Jeon*

Nanophotonics, 13(7), 971-982, (2024)

[IF=6.6, Physics, Applied, Q1 (TOP 15.2%)]

P1

Patent

포토마스크 제조방법 및 이를 기반으로 하는 자이로이드 나노구조의 제조방법

신종화, 박준형, 김명준, 김나영, 전석우, 배광민, 장환석

10-2025-0148095

P2

Patent

포토마스크 제조방법 및 이를 기반으로 하는 다이아몬드 또는 장작더미 나노구조의 제조방법

신종화, 박준형, 김명준, 김나영, 전석우, 배광민, 장환석

10-2025-0148102

Career

2025.03 — 현재

Ph.D. Candidate

Department of Materials Science and Engineering, Korea university, Seoul

Nanomaterials for Electronics and Optics Lab.

2022.09 — 2022.12

Research Intern

Electronic Materials Research Center, KIST, Seoul

Electronic Thin Films Lab.

Education

2025.03 — Current

Ph.D. in Materials Science & Engineering

Korea University, Seoul

Thesis : Inverse design of ....

2023.03 — 2025.02

M.S. in Materials Science & Engineering

Korea University, Seoul

Thesis : Inch-scale fabrication of 3D thin-shell alumina with woodpile structure and their application in lightweight and high-strength structural material

2017.03 — 2023.02

B.S. in Materials Science & Engineering

Korea University, Seoul

Awarded the Outstanding Achievement Award and the Excellence Award

2014.03 — 2017.02

High School Diploma

Hansung Science High School, Seoul

Minister of Science and ICT Award, National Science Exhibition

Contact