Youngkuk Kim

Improving hit discovery by integrating activity cliff sensitivity into active learning

Junha Kim, Youngkuk Kim, Bonil Koo, Dongmin Bang et autres

MOTIVATION: Active learning has emerged as an effective strategy for accelerating molecular discovery under limited labeling budgets. However, existing methods primarily focus on global information, often overlooking activity cliff-sharp changes in bioactivity caused by small structural perturbations-leading to suboptimal sample selection. In …

kr, gb, ca (code pays fourni par la source)

Synergistic Optimization of Metallization and Firing Profiles for Enhanced Fill Factor and Efficiency in n-TOPCon Crystalline Silicon Solar Cells

Hasnain Yousuf, Muhammad Quddamah Khokhar, Alamgeer ., Rafi ur Rahman et autres

kr (code pays fourni par la source)

Coexisting kagome and heavy fermion flat bands in YbCr6Ge6

Hanoh Lee, Churlhi Lyi, Taehee Lee, H. Na et autres

Flat bands, electronic states with nearly dispersionless energy-momentum structure, provide fertile ground for unconventional quantum phases. Recent observations of flat bands at the Fermi level in kagome metals open the possibility of unifying topology and correlation-driven heavy-fermion physics. Here we show that …

kr, us (code pays fourni par la source)

Coexisting kagome and heavy fermion flat bands in YbCr6Ge6

Hanoh Lee, Churlhi Lyi, Taehee Lee, H. Na et autres

Flat bands, electronic states with nearly dispersionless energy-momentum structure, provide fertile ground for unconventional quantum phases. Recent observations of flat bands at the Fermi level in kagome metals open the possibility of unifying topology and correlation-driven heavy-fermion physics. Here we show that …

kr, us (code pays fourni par la source)

Transition-selective photocurrents in Floquet-driven monolayer MoSe2

Hong-Guk Min, Chang Jae Roh, Changyoung Kim, Youngkuk Kim

We demonstrate symmetry-selective control of nonlinear photoconductivity in monolayer MoSe 2 , where near-resonant, linearly polarized light induces transition-specific symmetry breaking and topological phase transitions without violating time-reversal symmetry. Combining Floquet theory with first-principles modeling, we show that x -polarized light breaks …

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Normal Dirac semimetal phase and Zeeman-Induced topological Fermi arc in PtSr5

Inkyou Lee, Churlhi Lyi, Youngkuk Kim

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Stacking-dependent topological electronic structures in honeycomb-kagome heterolayers

Chan Bin Bark, Hanbyul Kim, Seik Pak, Hong-Guk Min et autres

Heterostructures of stacked two-dimensional lattices have shown great promise for engineering novel material properties. As an archetypal example of such a system, the hexagon-shared honeycomb-kagome lattice has been experimentally synthesized in various material platforms. In this work, we explore three rotationally symmetric …

kr (code pays fourni par la source)

Development of Pulse Power Supply for Plasma Generation and Comparison of Plasma Generation Voltage According to Power Source (DC, AC, Pulse)

Shin Kim, In-Sik Lee, Youngkuk Kim

This paper investigates the variations in plasma generation voltage based on different power supply types, including DC, AC, and pulsed sources, to gain deeper insights into their effects on plasma formation and overall efficiency. Aluminum was chosen as the plasma electrode due …

Strain-Driven Higher-Order Topological Dirac Semimetal in Noncentrosymmetric γ-GeSe

Churlhi Lyi, Youngkuk Kim

Strain-engineered topological phases in noncentrosymmetric materials offer fertile ground for realizing exotic quantum states, yet their experimental realization remains elusive. Here, using first-principles calculations, we demonstrate that the van der Waals layered material γ-GeSe undergoes a sequence of strain-induced topological phase transitions, …

kr (code pays fourni par la source)

Stacking-dependent topological electronic structures in honeycomb-kagome heterolayers

Chan Bin Bark, Hanbyul Kim, Seik Pak, Hong-Guk Min et autres

Heterostructures of stacked two-dimensional lattices have shown great promise for engineering novel material properties. As an archetypal example of such a system, the hexagon-shared honeycomb-kagome lattice has been experimentally synthesized in various material platforms. In this work, we explore three rotationally symmetric …

Large DNA deletions occur during DNA repair at 20-fold lower frequency for base editors and prime editors than for Cas9 nucleases

Gue‐Ho Hwang, Seok‐Hoon Lee, Minsik Oh, Segi Kim et autres

When used to edit genomes, Cas9 nucleases produce targeted double-strand breaks in DNA. Subsequent DNA-repair pathways can induce large genomic deletions (larger than 100 bp), which constrains the applicability of genome editing. Here we show that Cas9-mediated double-strand breaks induce large deletions …

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Gate Modulation of Dissipationless Nonlinear Quantum Geometric Current in 2D Te

Giheon Kim, Jaeuk Bahng, Jaemo Jeong, Wonkil Sakong et autres

Two-dimensional trigonal tellurium (2D Te), a narrow-bandgap semiconductor with a bandgap of approximately 0.3 eV, hosts Weyl points near the band edge and exhibits a narrow, strong Berry curvature dipole (BCD). By applying a back-gate bias to align the Fermi level with …

kr, au (code pays fourni par la source)