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- University of California, BerkeleyUS220 papers
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6 papers · 2 filters
Cooperative gas adsorption without a phase transition in metal-organic frameworks
Joyjit Kundu, Jurgen. F. Stilck, Jung-Hoon Lee +3
Cooperative adsorption of gases by porous frameworks permits more efficient uptake and removal than does the more usual non-cooperative (Langmuir-type) adsorption. Cooperativity, s…
Optically discriminating carrier-induced quasiparticle band gap and exciton energy renormalization in monolayer MoS2
Kaiyuan Yao, Aiming Yan, Salman Kahn +7
Optoelectronic excitations in monolayer MoS2 manifest from a hierarchy of electrically tunable, Coulombic free-carrier and excitonic many-body phenomena. Investigating the fundamen…
Dynamics of Symmetry-Breaking Stacking Boundaries in Bilayer MoS2
Aiming Yan, Chin Shen Ong, Diana Yuan Qiu +5
Crystal symmetry of two-dimensional (2D) materials plays an important role in their electronic and optical properties. Engineering symmetry in 2D materials has recently emerged as…
Resolving ultrafast exciton migration in organic solids at the nanoscale
Samuel B. Penwell, Lucas D. S. Ginsberg, Rodrigo Noriega +1
The effectiveness of molecular-based light harvesting relies on transport of optical excitations, excitons, to charg-transfer sites. Measuring exciton migration has, however, been…
Realization of Quantum Spin Hall State in Monolayer 1T'-WTe2
Shujie Tang, Chaofan Zhang, Dillon Wong +23
A quantum spin Hall (QSH) insulator is a novel two-dimensional quantum state of matter that features quantized Hall conductance in the absence of magnetic field, resulting from top…
Strain-modulated Bandgap and Piezo-resistive Effect in Black Phosphorus Field-effect Transistors
Zuocheng Zhang, Likai Li, Jason Horng +10
Energy bandgap largely determines the optical and electronic properties of a semiconductor. Variable bandgap therefore makes versatile functionality possible in a single material.…