A5101418571- Graphene research and applications
- 2D Materials and Applications
- Surface and Thin Film Phenomena
- Topological Materials and Phenomena
- Catalytic Processes in Materials Science
- Quantum and electron transport phenomena
- Molecular Junctions and Nanostructures
- Semiconductor materials and devices
- Surface Chemistry and Catalysis
- Catalysis and Oxidation Reactions
- Quantum Dots Synthesis And Properties
- Nonlinear Optical Materials Research
- Electronic and Structural Properties of Oxides
- Chalcogenide Semiconductor Thin Films
- Advanced Thermoelectric Materials and Devices
- Semiconductor Quantum Structures and Devices
- nanoparticles nucleation surface interactions
- Magnetic properties of thin films
- Nonlinear Optical Materials Studies
- Advanced Chemical Physics Studies
- Photonic and Optical Devices
- Fullerene Chemistry and Applications
- Nanowire Synthesis and Applications
- Food Allergy and Anaphylaxis Research
- Ammonia Synthesis and Nitrogen Reduction
Hunan University
2020-2025
State Key Laboratory of Metastable Materials Science and Technology
2024
First Affiliated Hospital of Anhui Medical University
2024
Anhui Medical University
2024
Ocean University of China
2023-2024
Yanshan University
2024
Chinese Academy of Sciences
2006-2023
Hunan Institute of Technology
2023
Institute of High Energy Physics
2023
Institute for Research in Fundamental Sciences
2022
Germanene, a 2D honeycomb lattice analogous to graphene, is fabricated on Pt(111) surface. It exhibits buckled configuration with (3 × 3) superlattice coinciding the substrate's (√19 √19) superstructure. Covalent bonds exist throughout germanene layer. The resulting high-quality enables researchers explore fundamentals of and its potential applications.
Electrolyte anions are critical for achieving high-voltage stable potassium-metal batteries (PMBs). However, the common cannot simultaneously prevent formation of 'dead K' and corrosion Al current collector, resulting in poor cycling stability. Here, we demonstrate cyclic anion hexafluoropropane-1,3-disulfonimide-based electrolytes that can mitigate remarkably enhance stability PMBs. Particularly, even using low salt concentration (0.8 M) additive-free carbonate-based electrolytes, PMBs with...
Thickness matters: Ultrathin oxide films on metals can greatly enhance catalytic activity, for example, in CO oxidation an FeO(111) film grown a Pt(111) substrate. Under the reaction conditions, bilayer FeO restructures to form trilayer OFeO (see picture). Experimental evidence structure/morphology of and theoretical modeling mechanism its formation surface are presented.
The morphology and thermal stability of Pt particles deposited on Fe3O4 (111) films were studied by scanning tunneling microscopy (STM) temperature programmed desorption CO. Vacuum annealing at temperatures above 800 K led to significant sintering that reduced CO uptake a much higher extent than the surface area. A similar effect adsorption was observed after mild oxidation−reduction treatment 500 K. results are rationalized in terms strong metal−support interaction between Fe3O4, whereby...
Bernal-stacked bilayer germanene with a stable buckled honeycomb structure has been successfully synthesized on Cu(111). Structural and electronic characterizations as well theoretical calculations unequivocally demonstrate for the first time presence of nearly linear energy dispersion in vicinity Fermi energy, expected Dirac signature freestanding germanene.
The challenges facing the rapid developments of highly integrated electronics, photonics, and microelectromechanical systems suggest that effective fabrication technologies are urgently needed to produce ordered structures using components with high performance potential. Inspired by spontaneous organization molecular units into noncovalent interactions, we succeed for first time in synthesizing a two-dimensional superordered structure (2DSOS). As demonstrated graphene, 2DSOS was prepared...
Abstract Organic electrode materials are extensively applied for alkali metal (lithium, sodium, and potassium)‐ion batteries (LIBs, SIBs, PIBs) due to their sustainability low cost. As a typical organic cathode, poly(2,6‐anthraquinonyl sulfide) (PAQS) shows high theoretical capacity, yet its electrochemical behavior mechanisms in alkali‐metal‐ion still require clarification. Herein, PAQS microspheres synthesized as cathodes LIBs, PIBs. When using traditional low‐concentration electrolytes,...
Indium selenide (InSe) has a high electron mobility and tunable direct band gap, enabling its potential applications to electronic optoelectronic devices. Here, we report the fabrication of InSe photodetectors with on/off ratios ultrahigh photoresponsivity, using ferroelectric poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) copolymer films as top-gate dielectric. Benefiting from successful suppression dark current down ∼10-14A in channel by tuning three different polarization...
This work presents a multifunctional MXene-composited organohydrogel with high tensile strength, excellent environmental stability, recyclability and outstanding UV-shielding ability for flexible wearable sensors.
Low-dimensional materials have attracted significant attention due to their unique physical properties and broad potential applications. Antimony selenide is well known for its thermoelectric properties. However, the on-surface synthesis of chain-like structures with varying stoichiometries remains challenging. In this study, we employ scanning tunneling microscopy/spectroscopy density functional theory calculations investigate epitaxial growth SbSe chain structures. With increasing...
The quality of graphene grown via chemical vapor deposition still has very great disparity with its theoretical property due to the inevitable formation grain boundaries. design single-crystal substrate an anisotropic twofold symmetry for unidirectional alignment seeds would be a promising way eliminating boundaries at wafer scale. However, such delicate process will easily terminated by obstruction defects or impurities. Here we investigated isotropic growth behavior single crystals melting...
The transition metal dichalcogenide (TMD)-metal interfaces constitute an active part of TMD-based electronic devices with optimized performances. Despite their decisive role, current strategies for nanoscale tuning remain limited. Here, we demonstrate in the WSe2/Au interface by twist engineering, capable modulating WSe2 carrier doping from intrinsic p-type to n-type. Scanning tunneling microscope/spectroscopy gives direct evidence enhanced interfacial interaction induced as angle respect...
Growth and surface termination of a Fe${}_{3}$O${}_{4}$(111) thin film on Pt(111) were examined by combination low-energy electron microscopy, selected area diffraction (LEED), x-ray-induced photoemission microscopy. The exhibits the predominance one out two possible rotational domains, independent thickness. morphology strongly depends preparation conditions, e.g., at high oxidation temperature FeO/Pt(111) domains are formed that prevent closure film. Dynamical LEED analysis spot-profile...
Recent transport studies have demonstrated the great potential of twisted monolayer-bilayer graphene (TMBG) as a new platform to host moiré flat bands with higher tunability than bilayer (TBG). However, direct visualization in TMBG and its comparison ones TBG remain unexplored. Here, via fabricating on single sample exactly same twist angle ∼1.13°, we present comparative study between using scanning tunneling microscopy spectroscopy. We observe sharp density states peak near Fermi energy...
Nucleation, growth and thermal stability of Pt particles supported on well ordered Fe(3)O(4)(111) thin films grown Pt(111) were studied by scanning tunnelling microscopy (STM) temperature programmed desorption (TPD) CO. STM studies showed that grows through the formation single-layer islands coalesce at high coverage. Vacuum annealing 600 K caused sintering extended two-dimensional (2D) one two layers in thickness sub-monolayer Well faceted, three-dimensional (3D) nanoparticles formed to...
As a two-dimensional semiconductor with many physical properties, including, notably, layer-controlled electronic bandgap and coupled spin-valley degree of freedom, monolayer MoSe2 is strong candidate material for next-generation opto- valley-electronic devices. However, due to substrate effects such as lattice mismatch dielectric screening, preserving the monolayer's intrinsic properties remains challenging. This issue generally significant metallic substrates whose active surfaces are...
Topological semimetals have emerged as quantum materials including Dirac, Weyl, and nodal line semimetals, so on. Dirac (DNL) possess topologically nontrivial bands crossing along a or loop are considered precursor states for other types of semimetals. Here, we combine scanning tunneling microscopy/spectroscopy (STM/S) measurements density functional theory (DFT) calculations to investigate twist angle tuning electronic structure in two-dimensional DNL semimetal Au2Ge. Theoretical show that...
An ultra-thin FeO(111) film grown on Pt(111) is found to exhibit a much higher rate of CO oxidation at stoichiometric CO:O2 ratios than the clean surface. This unexpected result rationalized basis reaction induced dewetting oxide film, ultimately resulting in highly dispersed FeO x nanoparticles Pt(111). The effect may have strong impact catalytic properties noble metal particles encapsulated by reducible support as metal-support interaction.