Research Area

1. Reconfigurable Photonics and Active Modulation

Adv. Mater., 36, 2310556 (2024)

Nanophotonics, 13, 1119-1129 (2024)

Recently, to meet the dynamic response over broad optical bands, optically active materials have been integrated with diverse photonic platforms. We mainly focus on the optically active materials of phase change materials (GST) and conducting polymers (PEDOT:PSS and polyaniline) for a power-efficient light-matter modulation platform.

◆ : 1st author paper

Publication list

Nanophotonics, 13, 1119 (2024) ◆

Adv. Mater. 36, 2310556 (2024) ◆

Microsyst. Nanoeng., 10, 22 (2024)

iScience 26, 107946 (2023)

iScience 26, 105780 (2023) ◆

iScience 25, 104727 (2022) ◆

2. Structural Color and Colorimetric Sensor

Front Cover

Adv. Mater. 34, 2110003 (2022)

Adv. Funct. Mater. 30, 1908592 (2020)

We deeply studied structural color as the visual effect caused by the photonic structure, creating vivid colors without pigments. A colorimetric sensor changes color in response to chemical or physical changes, providing a simple, visual indication of the presence or concentration of a substance.

◆ : 1st author paper

Publication list

Nano Today 52, 101968 (2023) ◆

Adv. Sci. 2304310 (2023) ◆

Nanomaterials 13, 2, 319 (2023)

Adv. Sci. 10, 2, 2204469 (2022)

ACS Appl. Mater. Interfaces 14, 39, 44753 (2022) ◆

Adv. Mater. 34, 21, 2110003 (2022) ◆

Sci. Adv. 8, 10, eabm8598 (2022)

Adv. Opt. Mater. 9, 17, 2100429 (2021)

Adv. Sci. 7, 18, 2000978 (2020) ◆

ACS Appl. Nano. Mater. 3, 7, 6636 (2020) ◆

Nanophotonics 9, 10, 3287 (2020)

Adv. Funct. Mater. 30, 11, 1908592 (2020) ◆

3. Photonics for Optoelectronic Devices

Inside Front Cover

Adv. Opt. Mater. 10, 2102388 (2022)

Nat. Commun. 13, 1946 (2022)

ACS. Appl. Mater. Interfaces 14, 44419 (2022)

We enhance the performance of optoelectronic devices, using photonics to control light-material interactions for improved efficiency or new functionalities. By crafting micro-/nano-sized structures to manipulate light's behavior, we develops unique devices like colored solar cells, reflective modulators, and encapsulator.

◆ : 1st author paper

Publication list

ACS Appl. Mater. Interfaces 14, 39, 44419 (2022) ◆

Nat. Commun. 13, 1946 (2022)

Adv. Opt. Mater. 10, 6, 2102388 (2022) ◆

Nano Research 14, 2904 (2021)

Opt. Mater. Express 9, 11, 4178 (2019)

Joo Hwan Ko, Postdoctoral researcher

Massachusetts Institute of Technology

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‌Email joohwan.ko93@gmail.com | jhko@mit.edu

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