A5100381891- Graphene research and applications
- Metal and Thin Film Mechanics
- Topological Materials and Phenomena
- Surface and Thin Film Phenomena
- Hydrocarbon exploration and reservoir analysis
- Quantum and electron transport phenomena
- Semiconductor materials and devices
- Geological and Geophysical Studies
- Geochemistry and Geologic Mapping
- Advanced Chemical Physics Studies
- Gold and Silver Nanoparticles Synthesis and Applications
- 2D Materials and Applications
- Advanced Condensed Matter Physics
- Quantum Dots Synthesis And Properties
- Geological and Geochemical Analysis
- Magnetic properties of thin films
- High Entropy Alloys Studies
- Trace Elements in Health
- Microstructure and Mechanical Properties of Steels
- Selenium in Biological Systems
- GaN-based semiconductor devices and materials
- Ion-surface interactions and analysis
- Nanomaterials for catalytic reactions
- Molecular Junctions and Nanostructures
- Advancements in Battery Materials
Hefei National Center for Physical Sciences at Nanoscale
2010-2024
University of Science and Technology of China
2010-2024
Chengdu University of Technology
2021
China University of Geosciences (Beijing)
2020
Shaanxi University of Technology
2019
Harbin Institute of Technology
2008-2019
The University of Texas at Austin
2016-2018
Hefei University
2018
Iowa State University
2017
Ames National Laboratory
2017
Silver nanocubes with edge lengths controllable in the range of 30−200 nm were synthesized using an approach based on seeded growth. The keys to success this synthesis are use single-crystal Ag seeds direct growth and AgNO3 as a precursor elemental Ag, where byproduct HNO3 can block both homogeneous nucleation evolution into twinned nanoparticles. Either spherical (in shape cuboctahedron) or cubic could be employed for process. length resultant readily controlled by varying amount used,...
A flatband representing a highly degenerate and dispersionless manifold state of electrons may offer unique opportunities for the emergence exotic quantum phases. To date, definitive experimental demonstrations flatbands remain to be accomplished in realistic materials. Here, we present first observation striking near Fermi level layered Fe_{3}Sn_{2} crystal consisting two Fe kagome lattices separated by Sn spacing layer. The band flatness is attributed local destructive interferences Bloch...
This article describes a method for generating Au-based nanocages with controlled wall thickness, porosity, and optical properties by dissolving Ag from Au-Ag alloy nanoboxes H(2)O(2). It involves two steps: i) formation of some pure left behind titrating nanocubes aqueous HAuCl(4); ii) removal atoms both the remaining in walls via H(2)O(2) etching. The resultant can be easily tailored controlling amount added into reaction system. Due to changes spectra, also employed detect more or less...
The authors demonstrate experimentally the existence of theoretically predicted antiferromagnetic Dirac states in kagome compound FeSn, where $P$ and $T$ symmetries are individually broken but combined $P\phantom{\rule{0}{0ex}}T$ symmetry is present. Moreover, their theoretical analysis reveals that, due to salient structure, fermions can be transformed into either massless/massive Weyl or massive via manipulation, study does report experimental observation Weyl-like cones at surface driven...
Abstract The van der Waals interaction in vertical heterostructures made of two-dimensional (2D) materials relaxes the requirement lattice matching, therefore enabling great design flexibility to tailor novel 2D electronic systems. Here we report successful growth MoSe 2 on single-layer hexagonal boron nitride (hBN) Ru(0001) substrate using molecular beam epitaxy. Using scanning tunnelling microscopy and spectroscopy, found that quasi-particle bandgap hBN/Ru is about 0.25 eV smaller than...
Precise spatial control of the spin propagation channels is fundamental and practical importance in future graphene-based spintronic devices. Here we use first-principles calculations to show that when narrow zigzag graphene nanoribbons are connected form junctions or superlattices, properly placed square-shaped carbon tetragons not only serve as effective bundles two incoming edge channels, but also act definitive topological switches for outgoing channels. The nanoribbon segments largely...
The moiré pattern formed between a two-dimensional (2D) material and the substrate has played crucial role in tuning electronic structure of 2D material. Here, by using scanning tunneling microscopy spectroscopy, we found moiré-pattern-dependent band gap work function modulation hexagonal boron nitride (hBN)/Cu(111) heterostructures, whose amplitudes increase with wavelength. Moreover, shifts agree well conduction edge shifts, indicating spatially constant electron affinity for hBN layer....
Exploration and manipulation of electronic states in low-dimensional systems are great importance the fundamental practical aspects nanomaterial nanotechnology. Here, we demonstrate that incorporation vacancy defects into monatomic indium wires on $n$-type Si(111) can stabilize electronically phase-separated ground where insulating $8\ifmmode\times\else\texttimes\fi{}2$ metallic $4\ifmmode\times\else\texttimes\fi{}1$ phases coexist. Furthermore, areal ratio two be tuned reversibly by...
The Weyl semimetal has emerged as a new topologically nontrivial phase of matter, hosting low-energy excitations massless fermions. Here, we present comprehensive study type-II WP 2 . Transport studies show butterfly-like magnetoresistance at low temperature, reflecting the anisotropy electron Fermi surfaces. This four-lobed feature gradually evolves into two-lobed variant with an increase in mainly due to reduced relative contribution surfaces compared hole for magnetoresistance. Moreover,...
Abstract The microstructural characteristics of Ce conversion coatings on carbon fiber reinforced Al matrix (Cf/Al) composites and NiP plated Cf/Al were studied by SEM, AFM, TEM XPS. coating the composite does not have obvious microcracks, which can be found easily in coatings. has a lower surface roughness profile arithmetic mean deviation ( R ) than coating, as seen AFM. Because inhomogeneity material different levels deposition at sites, nonhomogeneous sites would promote microcrack...
Atomically flat and thermally stable graphene is achieved on the chemically active Si(111) surface, with preserved intrinsic electronic properties.
The Proterozoic oil in Gaosheng area of the Western Depression Liaohe Basin has great potential and is an important exploration field. However, study about control factors reservoir needs to be improved. source rocks are characterized by using geochemical techniques structural evolution history restored 2D-Move software. characteristics reservoirs caps clarified, controlling formation summarized. generation intensity Es4 Es3 generally 5 × 10 6 –10 t/km 2 , indicating that sufficient....
Photoelectron velocity map images of Cu(CO)3− have been experimentally recorded in the 700–1100 nm range. The infrared-inactive Cu-C symmetric stretching modes for Cu(CO)3 (v2 ≈ 367 cm−1) and 408 cm−1), as well electron affinity (1.03±0.11 eV) Cu(CO)3, are accurately determined from high resolution photoelectron spectra. In combination with quantum chemical calculations bonding analyses, coordination bonds both found to be due back-donation π type, formed via promotion Cu’s 4s orbital 4p...