Jonggeun Hwang, Ph. D.  (01/2024 ~)

Postdoctoral Research Fellow, Department of Physics, POSTECH 

 Research interest: Single-molecule imaging in ambient conditions, Investigation of single-molecule level chemical reaction using Tip-enhanced Raman spectroscopy (TERS), Light-matter interaction in low-dimensional materials

Interest in life: Whisky, Food Science, Yacht Sailing

Email & Office: qrfaewsd@postech.ac.kr & 3) 217

Hyeongwoo Lee  (03/2020 ~)

Graduate Student, Department of Physics, POSTECH

Undergraduate research 03/2019 - 02/2020

Research interest: Understanding nanoscale light-matter interactions in low-dimensional quantum materials and devices. Expertise in tip-enhanced photoluminescence (TEPL) nano-spectroscopy and -imaging.  

Interest in life: Adventures (More Information: 1, 2, 3)

Email & Office: physicsurf@postech.ac.kr & 3) 306

- 2020, 하계학술발표회 우수논문상, 한국광학회

- 2022, 제28회 휴먼테크논문대상 은상, 삼성전자

- 2022, 봄학술논문발표회 우수발표상 (구두), 한국물리학회

- 2022, 융문반도체논문상, 한국물리학회 (상금 250만원)

- 2023, POSTECH Alchemist fellow

- 2023, 봄학술논문발표회 우수발표상 (구두), 한국물리학회

- H. Lee*, et al., "Tip-Enhanced Photoluminescence Nano-Spectroscopy and Nano-Imaging" Nanophotonics 9, 3089 (2020)

- H. Lee*, et al., "Inducing and probing the localized excitons in atomically thin semiconductors via tip-enhanced cavity-spectroscopy" Advanced Functional Materials 31, 2102893 (2021) [Frontispiece]

- H. Lee*, et al., "Tip-induced strain engineering of a single metal halide perovskite quantum dot" ACS Nano 15, 9057 (2021)

- H. Lee* and Y. Koo*, et al., "Drift-dominant exciton funneling and trion conversion in 2D semiconductors on the nanogap" Science Advances 8, eabm5236 (2022)

- Y. Koo* and H. Lee*, et al., “Tunable interlayer excitons and switchable interlayer trions via dynamic near-field cavity,” Light: Science & Applications 12, 59 (2023).

- H. Lee*, et al., “All-optical control of high-purity trions in nanoscale waveguide,” Nature Communications 14, 1891 (2023).

- “BAND GAP ENGINEERING DEVICE OF SINGLE QUANTUM DOTS AND THE METHOD THEREOF,” PCT, Pending; # PCT/KR2020/018973 (2020).

“BAND GAP ENGINEERING DEVICE OF SINGLE QUANTUM DOTS AND THE METHOD THEREOF,” Korea, Pending; # 10-2020-0106941 (2020).

“SINGLE QUANTUM EMISSION GENERATOR AND THE METHOD THEREOF,” Korea, Pending; # 10-2020-0106940 (2020).

“AN ANALYSIS METHOD OF TIP-ENHANCED                     SPECTROSCOPY, AND A TIP-ENHANCED SPECTROSCOPY,” Korea, Pending; # 10-2022-0182046 (2022). 

Min Gu Kang  (03/2020 ~)

Graduate Student, Department of Physics, POSTECH

Undergraduate research 03/2019 - 02/2020

Research interest: Understanding nanoscale light-matter interactions in low-dimensional quantum materials and devices. Expertise in tip-enhanced Raman scattering (TERS) nano-spectroscopy and -imaging, and photo-induced force microscopy (PiFM).

Interest in life: Fitness and driving

Email & Office: mgkang96@postech.ac.kr & 3) 306 / mgkang@kriss.re.kr & 301) 136

- 2021, 봄학술논문발표회 우수발표상 (구두), 한국물리학회

- 2022, 가을학술논문발표회 우수발표상 (구두), 한국물리학회

- 2022, POSTECH Alchemist fellow

- 04/2020 ~02/2021, Visiting researcher in KRICT

- 01/2024 ~, Student researcher in KRISS

- M. Kang*, et al., "Conformational heterogeneity of molecules physisorbed on a gold surface at room temperature" Nature Communications 13, 4133 (2022)

- M. Kang*, et al., "Nanoscale Manipulation of Exciton–Trion Interconversion in a MoSe2 Monolayer via Tip-Enhanced Cavity-Spectroscopy" Nano Letters 24, 279 (2024)

"System for exciton-trion conversion and light emission", Korea, pending.

Yeonjeong Koo  (03/2021 ~)

Graduate Student, Department of Physics, POSTECH

Undergraduate research 03/2019 - 02/2021

Research interest: Control of nanoscale light-matter interactions in atomically thin semiconductors and devices. Expertise in tip-enhanced photoluminescence (TEPL) nano-spectroscopy and -imaging.  

Interest in life: Producing videos and creative web contents (More Information)

Email & Office: yjkoo@postech.ac.kr & 3) 306

- 2021, 봄학술논문발표회 우수발표상 (구두), 한국물리학회

- 2021, 가을학술논문발표회 우수발표상 (구두), 한국물리학회

- 2022,제28회 휴먼테크논문대상 은상,삼성전자 (상금 700만원)

- 2022, 우수여성대학원생상, 한국물리학회

- 08/2022 - 02/2023, Visiting grad student in JILA, Boulder, full support by NRF

- 2023, 제29회 휴먼테크논문대상 동상, 삼성전자

- 2023, 봄학술논문발표회 우수발표상 (구두), 한국물리학회

- 2023, 융문반도체논문상, 한국물리학회

- 05/2023 ~ 07/2023, Visiting researcher in KRISS

- 2023, 포스테키안 펠로우십 혁신 부문

- 2024, 가을학술논문발표회 우수발표상 (구두), 한국물리학회

- 2024, ISPSA Best poster award

- 2024, 박사과정생연구장려금

- Y. Koo*, et al., “Tip-induced nano-engineering of strain, bandgap, and exciton funneling in 2D semiconductors" Advanced Materials 33, 2008234 (2021) [Front cover]

- H. Lee* and Y. Koo*, et al., "Drift-dominant exciton funneling and trion conversion in 2D semiconductors on the nanogap" Science Advances 8, eabm5236 (2022)

- Y. Koo* and H. Lee*, et al., “Tunable interlayer excitons and switchable interlayer trions via dynamic near-field cavity,” Light: Science & Applications 12, 59 (2023).

- Y. Koo*, et al., “Nanocavity-integrated van der Waals heterobilayers for nano-excitonic transistor,” ACS Nano 17, 4584 (2023).

“METHOD FOR CONTROL AND ANALYSIS OF NANO-WRINKLE EMITTERS,” Korea, Pending; # 10-2021-0024218 (2021).

“AN OPTICAL SIGNAL RECORDING PROCESS AND MEDIUM,” Korea, Pending; # 10-2022-0182052 (2022). 

“A 2-DIMENSIONAL SEMICONDUCTOR CONTROLLING METHOD,” Korea, Pending; # 10-2023-0003097 (2023). 

“A TIP-ENHANCED SPECTROSCOPY,” Korea, Pending; # 10-2023-0003096 (2023). 

Taeyoung Moon  (03/2021 ~)

Graduate Student, Department of Physics, POSTECH

Research interest: Exploring nanoscale light-matter interactions. Tip-induced control of nano-optical phenomena. 

Interest in life: Basketball, Fitness

Email & Office: kevin3556@postech.ac.kr & 3) 306

- 2022, 동계학술대회 우수발표상 (구두), 한국진공학회

- 2023, 제29회 휴먼테크논문대상 동상, 삼성전자 (상금 500만원)

- 2023, 봄학술논문발표회 우수발표상 (구두), 한국물리학회

- 2023년 한국진공학회지 우수논문상, 한국진공학회

- 2023년 가을학술논문발표회 우수발표상 (포스터), 한국물리학회

- 2024년 한국진공학회지 으뜸포스터발표상, 한국진공학회

- T. Moon* and H. Joo*, et al., “Adaptive-Gap Tunable Surface-Enhanced Raman Scattering”, Nano Letters 24(12), 3777-3784 (2024)

“DIGITALLY OPERATING SHEAR-FORCE ATOMIC FORCE MICROSCOPY AND OPERATION METHOD,” Korea, Pending; # 10-2021-0124827 (2021).

Jae Won Ryu  (09/2022 ~)

Graduate Student, Department of Mechanical Engineering, POSTECH

Researcher 04/2022 - 08/2022

Research interest: Investigation of tip-induced nano optical phenomena in low dimensional quantum materials and devices. Control of the material properties in sub-nano scale via tip-enhanced approach. 

Interest in life: Sports, Playing instruments, Traveling

Email & Office: rjw0904@postech.ac.kr & 3) 306

Sujeong Kim  (06/2022 ~)

Graduate Student, Department of Physics, POSTECH

Research interest: Understanding optoelectronic phenomena in low-dimensional devices via tip-enhanced Raman spectroscopy (TERS) and tip-enhanced photoluminescence (TEPL) nano-spectroscopy and -imaging. 

Interest in life: Playing instruments

Email & Office: sjkim2904f@postech.ac.kr & 3) 306

- 2022, POSTECH 물리학과 1학기 우수조교상

- 2022, POSTECH Alchemist fellow

-2023, POSTECH 물리학과 2학기 우수조교상

-2023, 봄학술논문발표회 우수발표상 (포스터), 한국물리학회

-2023, 가을학술논문발표회 우수발표상 (포스터), 한국물리학회

-2024, 제30회 삼성휴먼테크논문대상 동상, 삼성전자

-2024, 제30회 삼성휴먼테크논문대상 장려상 (공저자), 삼성전자 

-2024, 봄학술논문발표회 우수발표상 (구두), 한국물리학회

-2024, ICNP 2024 Best poster award second prize

-2024, N2D 2024 Best poster award

- H. Lee* and S. Kim*, et al., "Quantum tunneling high-speed nano-excitonic modulator" Nature communications 15, 8725 (2024)

- S. Kim* and H. Lee*, et al., "Dynamical control of nanoscale electron density in atomically thin n-type semiconductors via nano-electric pulse generator" Science Advances 10, eadr0492 (2024) 

"ULTRA-PRECISION ELECTRON DENSITY CONTROL DEVICE” 

"ULTRA-FAST CONDUCTIVE OPTICAL RESONATOR" 

Taehyun Baek  (07/2022 ~)

Graduate Student, Department of Physics, POSTECH

Research interest: Development of novel measurement techniques based on atomic force microscopy (AFM). 

Interest in life: Sports, Games

Email & Office: bth0406@postech.ac.kr & 3) 306

Huitae Joo  (03/2023 ~)

Graduate Student, Department of Physics, POSTECH

Undergraduate research 01/2022 - 02/2023

Research interest: Optical measurements, phase transition, low-dimensional statistical physics, Cavity quantum electrodynamics. 

Interest in life: 16 personalities

Email & Office: phytae@postech.ac.kr & 3) 306

- 2023, Best poster award in APNFO 14

- 2023, 제29회 삼성휴먼테크논문대상 동상, 삼성전자

- 2023, Best poster award in APNFO 14

- 2024, 제30회 삼성휴먼테크논문대상 동상, 삼성전자

- 2024, 제30회 삼성휴먼테크논문대상 장려상, 삼성전자

- T. Moon* and H. Joo*, et al., “Adaptive-Gap Tunable Surface-Enhanced Raman Scattering”, Nano Letters 24(12), 3777-3784 (2024)

Yong Bin Kim  (03/2023 ~)

Graduate Student, Department of Physics, POSTECH

Researcher 09/2022 - 02/2023

Research interest: Understanding and controlling carrier dynamics in low dimensional materials. Developing instrument based on atomic force microscopy (AFM)

Interest in life: Movie, Driving, Playing instrument

Email & Office: life0944@postech.ac.kr & 3) 306

Hyeonmin Oh  (01/2024~)

Graduate Student, Department of Physics, POSTECH

Research interest: Tip-enhanced nano spectroscopy, exploration of quantum emitters in low-dimensional materials— especially their origin and control —and the investigation of tip-induced interactions within quantum systems.

Interest in life: Bible / Violin / Basketball

Email & Office: 10ohmstrong@postech.ac.kr & 3)306

Sehwa Jeong  (03/2024~)

Graduate Student, Department of Physics, POSTECH

Research interest: Understanding the optical phase transition phenomena of quasiparticles in low-dimensional materials via tip-enhanced Raman spectroscopy (TERS) and tip-enhanced photoluminescence (TEPL) nano-spectroscopy and imaging.

Interest in life: LEGO, Football

Email & Office: shjj1314@postech.ac.kr & 2) 217