A5031235486- Semiconductor materials and devices
- Additive Manufacturing Materials and Processes
- Additive Manufacturing and 3D Printing Technologies
- Physics of Superconductivity and Magnetism
- Semiconductor Quantum Structures and Devices
- Laser-Ablation Synthesis of Nanoparticles
- Rare-earth and actinide compounds
- GaN-based semiconductor devices and materials
- Silicon Nanostructures and Photoluminescence
- Advanced Sensor and Energy Harvesting Materials
- Graphene research and applications
- Iron-based superconductors research
- Metamaterials and Metasurfaces Applications
- Semiconductor materials and interfaces
- Diamond and Carbon-based Materials Research
- Advanced Antenna and Metasurface Technologies
- Tactile and Sensory Interactions
- Advanced materials and composites
- Graphene and Nanomaterials Applications
- Advanced Condensed Matter Physics
- Antenna Design and Analysis
- Nonlinear Optical Materials Studies
- Silicon and Solar Cell Technologies
- High Entropy Alloys Studies
- Advancements in Battery Materials
Ningbo Institute of Industrial Technology
2023-2025
Chinese Academy of Sciences
2023-2025
University of Manchester
1993-2024
University of Amsterdam
2006-2020
Harbin Institute of Technology
2013
Flanders Marine Institute
2010
University of California, Berkeley
1987-1988
Lawrence Berkeley National Laboratory
1987-1988
University of California System
1987
Strain sensors for smart wearable textiles have recently attracted great attention due to their potential in the healthcare applications, specifically, functions track heartbeat, pulse signals, and movements of limbs joints. Traditional methods typically require complicated procedures including dip-coating different solutions prepare sensing fibers before weaving into fabrics. In this study, we used an ultraviolet picosecond laser directly induce graphene on polyimide (PI) fabric produce a...
Abstract Tungsten (W) and stainless steel (SS) are well known for the high melting point good corrosion resistance respectively. Bimetallic W–SS structures would offer potential applications in extreme environments. In this study, a SS→W→SS sandwich structure is fabricated via special laser powder bed fusion (LPBF) method based on an ultrasonic-assisted deposition mechanism. Material characterization of SS→W interface W→SS was conducted, including microstructure, element distribution, phase...
Ti 3 C 2 and CN MXenes were exfoliated from their corresponding MAX phases by electrochemical etching using HBF 4 as the electrolyte. The performance of electrochemically etched MXene electrodes for Li-ion supercapacitors was studied.
Support structures are always associated with laser-based powder-bed fusion (L-PBF) processes, particularly for additive manufacturing of metallic components complex geometry overhang and reducing component distortion. Existing L-PBF processes use the same material both built support structures. Removing from fabricated by traditional post-treatment method is difficult time-consuming. This paper demonstrates an easy-to-remove composite related processing procedures in process. For 316L...
In this paper, an ultra-wideband, angle and polarization-insensitive laser assisted graphene metamaterial absorber is presented. The design consists of double resistive layers with the combination three dielectric substrates. imbedded nano-magnetic material Fe3O4 has been synthesisedby direct writing technology, which demonstrates a high degree uniformity deviations less than 6% for different designed values sheet resistance. Numerical simulation analytical studies were carried out in order...
A bevel has been etched in a GaAs epitaxial film grown on Si substrate, so that the Raman spectrum of layers can be measured as function distance from GaAs/Si interface. The amount strain and disorder estimated longitudinal optical phonon line shape frequency. Both were found to decrease with increase
In this paper, for the first time, a laser direct writing technique is reported to form S- and N-doped graphene patterns on thin (0.3 mm thickness) polyethylene terephthalate (PET) glass substrates from specially formulated organic polybenzimidazole (PBI) ink, without thermally affecting need metallic precursor. Unlike standard ink printing, postcuring at high temperatures not needed here, thus avoiding potential substrate distortion damages. A UV beam of 355 nm wavelength used generate...
Highlights: A new metamaterial was demonstrated to absorb microwaves with 97.2%–97.7% absorption within a wide bandwidth of 1.56 GHz-18.3 GHz. The material has achieved the highest relative and lowest thickness in L S-band reported so far. design multiple-layer structures for microwave absorption. one-step laser direct writing method synthesize graphene magnetic nanoparticles simultaneously. enabled achievement an electrical sheet resistance from 57 480 Ω sq −1 5% deviation.
Abstract Recently, dual‐atom alloy (DAA, also named diatomic alloy) catalysts with active metal dimers supported by a less host have attracted considerable interest owing to their distinctive geometric and electrical configurations. Despite developing many ways for synthesizing DAA catalysts, most contemporary methods depend on high‐temperature pyrolysis, costly apparatus, intricate procedures. This study presents, the first time, one‐step laser solid‐phase synthesis of (PtRu) 1 Co DAAs...
Photoluminescence (PL) at 77 K is used to study tensile stress variations in chemically etched stripes of a 3-μm-thick GaAs film grown on Si substrate. The patterns consist 1-mm-long with widths ranging from 100 4 μm and by squares. We observed monotonic shift PL peaks towards shorter wavelength for decreasing stripe width. In particular, when the width less than 7 μm, essentially uniaxial as evident magnitude peaks. polarization characteristics spectra these uniaxially stressed are...
Results of a detailed investigation the ferromagnetic superconductor ${\text{UGe}}_{2}$ using positive muon spin rotation and relaxation techniques are presented. The pressure temperature dependences frequencies related spin-spin rates show that transition from weakly to strongly polarized magnetic (WP-SP) phases is still observable at ${T}_{X}\ensuremath{\simeq}3\text{ }\text{K}$ under 1.33(2) GPa. Thus this survives higher pressures than previously believed. ${T}_{X}$ 1.00(2) GPa...
Abstract Lithium sulphur (Li-S) batteries are known to have much higher charge capacity than the currently widely used lithium-ion with graphite anodes. However, maintaining high cycle stability is a key challenge for Li-S due shuttle effect. Here we show highly stable characteristics 100% of 500 charge/discharge cycles at 0.5 C, 1 2 C and 3 rates. This was made possible by combination laser synthesised sulfur (S) nitrogen (N) doped graphene electrodes (without binder) molybdenum sulphide...
GaAs films have been grown on Si substrates patterned with SiN by molecular beam epitaxy. The pattern consists of bare stripe width ranging from 10 to 100 μm surrounded both sides and a reference area Si. 77 K photoluminescence (PL) spectrum intensity are measured the single crystalline these stripes area. For 1.5- 3-μm-thick films, PL shows 140% 75% increase over area, respectively. This remarkable in is believed due reduction dislocations inside window improvement optical quality makes...