Search Results - "Lui, Chun Hung"
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Tuning ultrafast electron thermalization pathways in a van der Waals heterostructure
Published in Nature physics (01-05-2016)“…Interlayer transport can be made to occur slower or faster than intralayer scattering in van der Waals heterostructures, allowing the thermalization pathways…”
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2
Reliability and Convergent Validity of Endurance Indices Derived from Near-Infrared Spectroscopy and Electromyography during a Bilateral Hanging Task in Amateur Rock Climbers
Published in Journal of functional morphology and kinesiology (10-09-2024)“…The ability to hang for a long time before forearm muscle fatigue is a crucial element of successful rock climbing. Electromyography (EMG) and near-infrared…”
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3
Spin-induced linear polarization of photoluminescence in antiferromagnetic van der Waals crystals
Published in Nature materials (01-07-2021)“…Antiferromagnets are promising components for spintronics due to their terahertz resonance, multilevel states and absence of stray fields. However, the zero…”
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Large, valley-exclusive Bloch-Siegert shift in monolayer WS2
Published in Science (American Association for the Advancement of Science) (10-03-2017)“…Single atomic layers of transition metal dichalcogenide (TMD) materials have two nonequivalent valleys in their electronic structure. When researchers shine…”
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Observation of an electric-field-induced band gap in bilayer graphene by infrared spectroscopy
Published in Physical review letters (26-06-2009)“…It has been predicted that application of a strong electric field perpendicular to the plane of bilayer graphene can induce a significant band gap. We have…”
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Observation of an electrically tunable band gap in trilayer graphene
Published in Nature physics (01-12-2011)“…Monolayer graphene has no electronic band gap. Bilayer graphene does, and can be controlled by an electric field. And for trilayer graphene, infrared…”
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7
Measurement of the thermal conductance of the graphene/SiO2 interface
Published in Applied physics letters (29-11-2010)“…We have examined the interfacial thermal conductance GK of single and multilayer graphene samples prepared on fused SiO2 substrates by mechanical exfoliation…”
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8
Ultraflat graphene
Published in Nature (London) (19-11-2009)“…Graphene, a single atomic layer of carbon connected by sp2 hybridized bonds, has attracted intense scientific interest since its recent discovery. Much of the…”
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Exciton-polaron Rydberg states in monolayer MoSe2 and WSe2
Published in Nature communications (21-10-2021)“…Exciton polaron is a hypothetical many-body quasiparticle that involves an exciton dressed with a polarized electron-hole cloud in the Fermi sea. It has been…”
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10
Measurement of the optical conductivity of graphene
Published in Physical review letters (07-11-2008)“…Optical reflectivity and transmission measurements over photon energies between 0.2 and 1.2 eV were performed on single-crystal graphene samples on a SiO2…”
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Temperature-Activated Layer-Breathing Vibrations in Few-Layer Graphene
Published in Nano letters (13-08-2014)“…We investigated the low-frequency Raman spectra of freestanding few-layer graphene (FLG) at varying temperatures (400–900 K) controlled by laser heating. At…”
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Observation of Intervalley Biexcitonic Optical Stark Effect in Monolayer WS2
Published in Nano letters (14-12-2016)“…Coherent optical driving can effectively modify the properties of electronic valleys in transition metal dichalcogenides. Here, we observe a new type of…”
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Observation of Layer-Breathing Mode Vibrations in Few-Layer Graphene through Combination Raman Scattering
Published in Nano letters (14-11-2012)“…We report the observation of layer-breathing mode (LBM) vibrations in few-layer graphene (FLG) samples of thickness from two to six layers, exhibiting both…”
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14
Water-Gated Charge Doping of Graphene Induced by Mica Substrates
Published in Nano letters (08-02-2012)“…We report on the existence of water-gated charge doping of graphene deposited on atomically flat mica substrates. Molecular films of water in units of ∼0.4 nm…”
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15
Electric-field tunable Type-I to Type-II band alignment transition in MoSe2/WS2 heterobilayers
Published in Nature communications (14-05-2024)“…Semiconductor heterojunctions are ubiquitous components of modern electronics. Their properties depend crucially on the band alignment at the interface, which…”
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16
Shaping Organic Microcrystals Using Focused Ion Beam Milling
Published in Crystal growth & design (04-03-2020)“…The technique of focused ion beam (FIB) milling is used to cut two-dimensional shapes into single crystals composed of the organic semiconductor molecule…”
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Real-Time Observation of Interlayer Vibrations in Bilayer and Few-Layer Graphene
Published in Nano letters (09-10-2013)“…We report real-time observation of the interlayer shearing mode, corresponding to the lateral oscillation of graphene planes, for bi- and few-layer graphene…”
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18
Imaging Stacking Order in Few-Layer Graphene
Published in Nano letters (12-01-2011)“…Few-layer graphene (FLG) has been predicted to exist in various crystallographic stacking sequences, which can strongly influence the material’s electronic…”
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19
Midgap States in PbS Quantum Dots Induced by Cd and Zn Enhance Photon Upconversion
Published in ACS energy letters (13-04-2018)“…Exciton exchange between semiconductor quantum dots (QDs) and organic chromophores may find application in next-generation photovoltaics, probes, or…”
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Transforming into fully commensurate bilayers
Published in Nature materials (01-12-2023)“…Heat treatment can transform some moiré superlattices into fully commensurate bilayers, where atoms in opposite layers align perfectly with each other. This…”
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