245 citations · 389 across the 11 of their papers we have counts for
11 papers
Dynamical Control of Interlayer Excitons and Trions in WSe/MoWSe Heterobilayer via Tunable Near-Field Cavity
Yeonjeong Koo, Hyeongwoo Lee, Tatiana Ivanova +5
Emerging photo-induced excitonic processes in transition metal dichalcogenide (TMD) heterobilayers, e.g., coupling, dephasing, and energy transfer of intra- and inter-layer exciton…
Freeze-frame approach for robust single-molecule tip-enhnaced Raman spectroscopy at room temperature
Mingu Kang, Hyunwoo Kim, Elham Oleiki +7
A quantitative single-molecule tip-enhanced Raman spectroscopy (TERS) study at room temperature remained a challenge due to the rapid structural dynamics of molecules exposed to ai…
Low-threshold exciton transport and control in atomically thin semiconductors
Hyeongwoo Lee, Yeonjeong Koo, Jinseong Choi +9
Understanding and controlling the nanoscale transport of excitonic quasiparticles in atomically thin 2D semiconductors is crucial to produce highly efficient nano-excitonic devices…
Tip-induced strain, bandgap, and radiative decay engineering of a single metal halide perovskite quantum dot
Hyeongwoo Lee, Ju Young Woo, Dae Young Park +10
Strain engineering of perovskite quantum dots (pQDs) enables widely-tunable photonic device applications. However, manipulation at the single-emitter level has never been attempted…
Conformational heterogeneity of molecules physisorbed on a gold surface at room temperature
Mingu Kang, Hyunwoo Kim, Elham Oleiki +8
A quantitative single-molecule tip-enhanced Raman spectroscopy (TERS) study at room temperature remained a challenge due to the rapid structural dynamics of molecules exposed to ai…
Tip-induced nano-engineering of strain, bandgap, and exciton dynamics in 2D semiconductors
Yeonjeong Koo, Yongchul Kim, Soo Ho Choi +8
The tunability of the bandgap, absorption and emission energies, photoluminescence (PL) quantum yield, exciton transport, and energy transfer in transition metal dichalcogenide (TM…
Adaptive tip-enhanced nano-spectroscopy
Dong Yun Lee, Chulho Park, Jinseong Choi +3
Tip-enhanced nano-spectroscopy and -imaging, such as tip-enhanced photoluminescence (TEPL), tip-enhanced Raman spectroscopy (TERS), and others, have become indispensable from mater…
Radiative control of localized excitons at room temperature with an ultracompact tip-enhanced plasmonic nano-cavity
Hyeongwoo Lee, Inki Kim, Chulho Park +7
In atomically thin semiconductors, localized exciton (X) coupled to light shows single quantum emitting behaviors through radiative relaxation processes providing a new class o…
Tip-enhanced strong coupling spectroscopy, imaging, and control of a single quantum emitter
Kyoung-Duck Park, Molly A. May, Haixu Leng +5
Optical cavities can enhance and control light-matter interactions. This has recently been extended to the nanoscale, and with single emitter strong coupling regime even at room te…
Polarization control with plasmonic antenna-tips: A universal approach for optical nano-crystallography and vector-field imaging
Kyoung-Duck Park, Markus B. Raschke
Controlling the propagation and polarization vectors in linear and nonlinear optical spectroscopy enables to probe the anisotropy of optical responses providing structural symmetry…
Radiative control of dark excitons at room temperature by nano-optical antenna-tip induced Purcell effect
Kyoung-Duck Park, Tao Jiang, Genevieve Clark +2
Excitons, Coulomb-bound electron and hole pairs, are elementary photo-excitations in semiconductors, that can couple directly to light through radiative relaxation. In contrast to…