Jiwan Kim

Postdoctoral Researcher, InnoCORE POSEIDON Center @ KAIST

Ph.D. in Mechanical Engineering

I am a postdoctoral researcher at InnoCORE POSEIDON Center (KAIST). I am based in Wave Lab, working with Prof. Wonju Jeon. Through the POSEIDON Center, I also collaborate with Advanced Thermal and Energy Transport Laboratory, led by Prof. Joon Sang Kang.

I received my Ph.D. in Mechanical Engineering from KAIST under the supervision of Prof. Wonju Jeon. I subsequently conducted postdoctoral research at the Mechanical Engineering Research Institute (KAIST) as part of the Jang Young Sil Fellow Program.

My research focuses on acoustic metamaterials and wave control for noise reduction. I combine analytical modeling, finite-element and multiphysics simulations, design optimization, fabrication, and experimental validation to develop lightweight or deep-subwavelength structures capable of controlling various types of waves—including (but not limited to) sound, ultrasonic, and elastic waves. My work is motivated by noise-control challenges in mobility systems, power infrastructure, and cooling and ventilation systems.

You can explore the core of my research through my academic publications,
and see the full scope of my work—including projects, patents, and other achievements—in my CV.

✉️ jiwan.kim@kaist.ac.kr | Google Scholar | CV | LinkedIn

Research Interests

Deep Sub-Wavelength Acoustic Metasurfaces for Sound Absorption
- Near-perfect and broadband sound absorption in deep sub-wavelength thicknesses
- Nonplanar designs accounting for locally varying incidence angles along curved surfaces
- Mechanically tunable structures using asymmetric adjustable apertures for adaptive sound absorption
Lightweight Acoustic Metamaterials for Sound Insulation
- Lightweight meta-panels inducing negative effective material properties for low-frequency broadband sound insulation
- Computationally efficient theoretical frameworks for ultra-thin and ultra-lightweight designs
Complex-Valued Impedance Tailoring for Noise Reduction in Open Structures
- Complex-valued impedance tiles for noise suppression through structural openings while preserving heat and airflow exchange
Ventilated Acoustic Metamaterials for Noise Control under Flow Conditions
- Metaliners for noise insulation in ducts with non-uniform cross sections, maintaining high insertion loss across varying flow speeds

Education

Ph.D. in Mechanical Engineering
Korea Advanced Institute of Science and Technology (KAIST)
Mar. 2020 – Feb. 2025
Advisor: Prof. Wonju Jeon
M.S. in Mechanical Engineering
Korea Advanced Institute of Science and Technology (KAIST)
Mar. 2018 – Feb. 2020
Advisor: Prof. Wonju Jeon
B.S. in Mechanical Engineering
Korea Advanced Institute of Science and Technology (KAIST)
Mar. 2013 – Feb. 2018

Experience

Postdoctoral Researcher | Wave Lab, KAIST
Mar. 2025 – Present
Advisor: Prof. Wonju Jeon
Postdoctoral Researcher | InnoCORE POSEIDON Center, KAIST
May. 2026 – Present
Advisor: Prof. Joon Sang Kang

Research Support

InnoCORE Postdoctoral Fellowship, KAIST
May. 2026 – Present
Funding support for postdoctoral research at InnoCORE POSEIDON Center
Jang Young Sil Fellow Program, KAIST
May. 2025 – Apr. 2026
Funding support for postdoctoral research at KAIST

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