29 Result(s)
within
**ghai Chen
Materials Science
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Article
Self-supported NiFe-LDH nanosheets on NiMo-based nanorods as high-performance bifunctional electrocatalysts for overall water splitting at industrial-level current densities
Efficient, durable and economic electrocatalysts are crucial for commercializing water electrolysis technology. Herein, we report an advanced bifunctional electrocatalyst for alkaline water splitting by growin...
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Alloyed Pt-Sn nanoparticles on hierarchical nitrogen-doped carbon nanocages for advanced glycerol electrooxidation
Glycerol is an alternative sustainable fuel for fuel cells, and efficient electrocatalyst is crucial for glycerol oxidation reaction (GOR). The promising Pt catalysts are subject to the inadequate capability o...
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Perovskite semiconductors for room-temperature exciton-polaritonics
Lead-halide perovskites are generally excellent light emitters and can have larger exciton binding energies than thermal energy at room temperature, exhibiting great promise for room-temperature exciton-polari...
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Open AccessRestoration of non-structural damaged murals in Shenzhen Bao’an based on a generator–discriminator network
Shenzhen is a modern metropolis, but it hides a variety of valuable cultural heritage, such as ancient murals. How to effectively preserve and repair the murals is a worthy of discussion question. Here, we pro...
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Open AccessA polymeric composite protective layer for stable Li metal anodes
Lithium (Li) metal is a promising anode for high-performance secondary lithium batteries with high energy density due to its highest theoretical specific capacity and lowest electrochemical potential among ano...
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Strong exciton–photon coupling and polariton lasing in GaN microrod
We report on the studies of strong exciton photon coupling and polariton lasing at room temperature from single GaN microrods grown by metal-organic vapor phase epitaxy technique. Emission spectra were recorde...
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In situ quantification of interphasial chemistry in Li-ion battery
The solid–electrolyte interphase (SEI) is probably the least understood component in Li-ion batteries. Considerable effort has been put into understanding its formation and electrochemistry under realistic bat...
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Open AccessObservation of Extrinsic Photo-Induced Inverse Spin Hall Effect in a GaAs/AlGaAs Two-Dimensional Electron Gas
The inverse spin Hall effect induced by circularly polarized light has been observed in a GaAs/AlGaAs two-dimensional electron gas. The spin transverse force has been determined by fitting the photo-induced in...
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Article
Open AccessFerroelectric Field Effect Induced Asymmetric Resistive Switching Effect in BaTiO3/Nb:SrTiO3 Epitaxial Heterojunctions
Asymmetric resistive switching processes were observed in BaTiO3/Nb:SrTiO3 epitaxial heterojunctions. The SET switching time from the high-resistance state to low-resistance state is in the range of 10 ns under +...
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Correction: Corrigendum: The role of nanotechnology in the development of battery materials for electric vehicles
Nature Nanotechnology 11, 1031–1038 (2016); published online 6 December 2016; corrected after print 14 December 2016 In the original version of this Review Article Feng Pan's affiliation should have read: 'Sch...
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The role of nanotechnology in the development of battery materials for electric vehicles
This Review discusses how nanostructured materials are used to enhance the performances and safety requirements of Li batteries for hybrid and long-range electric vehicles.
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Open AccessTuning of Rashba/Dresselhaus Spin Splittings by Inserting Ultra-Thin InAs Layers at Interfaces in Insulating GaAs/AlGaAs Quantum Wells
The ratio of Rashba and Dresselhaus spin splittings of the (001)-grown GaAs/AlGaAs quantum wells (QWs), investigated by the spin photocurrent spectra induced by circular photogalvanic effect (CPGE) at inter-ba...
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Open AccessSpin transport in undoped InGaAs/AlGaAs multiple quantum well studied via spin photocurrent excited by circularly polarized light
The spin diffusion and drift at different excitation wavelengths and different temperatures have been studied in undoped InGaAs/AlGaAs multiple quantum well (MQW). The spin polarization was created by optical ...
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Open AccessObservation of anomalous linear photogalvanic effect and its dependence on wavelength in undoped InGaAs/AlGaAs multiple quantum well
We observed an anomalous linear photogalvanic effect (ALPGE) in undoped InGaAs/AlGaAs multiple quantum well and studied its wavelength dependence in details. This effect is believed to originate from the optic...
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Open AccessObservation of linear and quadratic magnetic field-dependence of magneto-photocurrents in InAs/GaSb superlattice
We experimentally studied the magneto-photocurrents generated by direct interband transition in InAs/GaSb type II superlattice. By varying the magnetic field direction, we observed that an in-plane magnetic fi...
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Open AccessSpin photocurrent spectra induced by Rashba- and Dresselhaus-type circular photogalvanic effect at inter-band excitation in InGaAs/GaAs/AlGaAs step quantum wells
Spin photocurrent spectra induced by Rashba- and Dresselhaus-type circular photogalvanic effect (CPGE) at inter-band excitation have been experimentally investigated in InGaAs/GaAs/AlGaAs step quantum wells (Q...
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Preparation and mechanical properties of β-SiC nanoparticle reinforced aluminum matrix composite by a multi-step powder metallurgy process
β-SiC nanoparticle reinforced Al matrix (nano-SiCp/Al) composite was prepared by a multistep powder metallurgy strategy including presureless sintering, hot compacting process and hot extrusion. ...
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Article
Open AccessInAs-mediated growth of vertical InSb nanowires on Si substrates
In this work, InSb nanowires are grown vertically on Si (111) with metal organic chemical vapor deposition using InAs as seed layer, instead of external metal catalyst. Two groups of InSb nanowires are fabrica...
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Open AccessIn-plane optical anisotropy of InAs/GaSb superlattices with alternate interfaces
The in-plane optical anisotropy (IPOA) in InAs/GaSb superlattices has been studied by reflectance difference spectroscopy (RDS) at different temperatures ranging from 80 to 300 K. We introduce alternate GaAs- ...
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Open AccessRaman study on zinc-blende single InAs nanowire grown on Si (111) substrate
We report polarized Raman scattering studies on single InAs nanowires (NWs). The NWs were grown by metalorganic chemical vapor deposition on Si (111) substrates without external catalyst and showed a zinc-blen...
