A5101561262- Quantum Dots Synthesis And Properties
- Copper-based nanomaterials and applications
- Chalcogenide Semiconductor Thin Films
- Advanced biosensing and bioanalysis techniques
- Electrochemical sensors and biosensors
- ZnO doping and properties
- Electrochemical Analysis and Applications
- Analytical Chemistry and Sensors
- Advanced Chemical Sensor Technologies
- Gas Sensing Nanomaterials and Sensors
- Magnetic Properties and Synthesis of Ferrites
- Iron oxide chemistry and applications
- Characterization and Applications of Magnetic Nanoparticles
- Biosensors and Analytical Detection
- Semiconductor materials and devices
- Conducting polymers and applications
- Metal and Thin Film Mechanics
- Advancements in Semiconductor Devices and Circuit Design
- Energetic Materials and Combustion
- Advanced Antenna and Metasurface Technologies
- Electromagnetic wave absorption materials
- 3D IC and TSV technologies
- Low-power high-performance VLSI design
- Metamaterials and Metasurfaces Applications
- Carbon and Quantum Dots Applications
Shanghai Jiao Tong University
2006-2024
Tongji University
2024
Computer Network Information Center
2024
Chinese Academy of Sciences
2024
University of Chinese Academy of Sciences
2024
University of Shanghai for Science and Technology
2021-2024
Yangzhou Polytechnic Institute
2021-2024
Boston University
2022
ShanghaiTech University
2019-2020
Benedict College
2020
It is well-known that inorganic nanocrystals are a benchmark model for nanotechnology, given the tunability of optical properties and stabilization specific phases uniquely possible at nanoscale. Copper (I) oxide (Cu2O) metal semiconductor with promising applications in solar energy conversion catalysis. To understand Cu/Cu2O/CuO system nanoscale, we have developed method preparing highly uniform monodisperse Cu2O. The procedure also serves to demonstrate our development generalized...
We have investigated the structural, magnetic, and electronic properties of nonstoichiometric iron oxide nanocrystals prepared by decomposition iron(II) iron(0) precursors in presence organic solvents capping groups. The highly uniform, crystalline, monodisperse that were produced enabled a full structural compositional survey electron microscopy X-ray diffraction. complex metastable behavior (wüstite) at nanoscale was studied combination Mossbauer spectroscopy magnetic characterization....
Quantitative determination of oxide nanoparticle composition and structure by X-ray photoelectron spectroscopy (XPS) has proven difficult for metal oxides because three factors: some nanoparticles are prone to reduction in the XPS instrument under illumination ultrahigh vacuum (UHV) environment; integral nature technique complicate data analysis; is not constant during finite sampling time required experiment. In this report, a method analysis core−shell developed account these factors...
The colloidal-synthesized ZnO nanorods with radius of 1.1±0.1nm (less than the bulk exciton Bohr radius, aB∼2.34nm) have been studied by optical methods combined simple model calculations. quantum confinement has observed in these nanorods. binding energy is shown to be significantly enhanced due one-dimensional confinement. Additionally, it suggested that green luminescence involves free holes.
We find that nearly monodisperse copper oxide nanoparticles prepared via the thermal decomposition of a Cu(I) precursor exhibit exceptional activity toward CO oxidation in CO/O2/N2 mixtures. Greater than 99.5% conversion to CO2 could be achieved at temperatures less 250 °C for over 12 h. In addition, phase diagram and pathway on Cu2O (100) is computed by ab initio methods found qualitative agreement with experimental findings.
Nanoscale zinc oxide (ZnO) rods of diameters close to the Bohr-exciton radius ( approximately 2 nm) can be prepared from a simple acetate precursor, resulting in ligand-capped ZnO, highly dispersible nonpolar solvents. Zinc oxide, is wide band-gap semiconductor with applications blue/ultraviolet (UV) optoelectronic devices and piezoelectric devices. We observe self-assembly into uniform stacks nanorods aligned parallel each other respect long axis, photoluminescence measurements provide...
We report a simple and effective method for the generation of high-quality nanocrystals manganese oxide, MnO, with an alkyl capping group. MnO is model system theoretical study electronic magnetic properties rock salt oxides. Synthesis relatively monodisperse was achieved over range sizes between 7 20 nm. The are readily dispersed in nonpolar solvents, their uniformity allows formation superlattices, as observed by TEM. Fitting size evolution/time data Lifshitz−Slyozov−Wagner indicates that...
Nanocrystals of the wide band gap semiconductor zinc oxide controllable morphologies were synthesized by a simple thermal decomposition method. The predominating factor in determining morphology (spheres, triangular prisms, and rods) was solvent, selected on basis coordinating power. nanoparticles structurally analyzed, photoluminescence each shape compared. intensity green emission, common to many ZnO structures, found vary with morphology. strongest corresponded largest surface/volume...
It has been suggested that all resistive-switching memory cells are memristors. The latter hypothetical, ideal devices whose resistance, as originally formulated, depends only on the net charge traverses them. Recently, an unambiguous test proposed [J. Phys. D: Appl. {\bf 52}, 01LT01 (2019)] to determine whether a given physical system is indeed memristor or not. Here, we experimentally apply such both in-house fabricated Cu-SiO2 and commercially available electrochemical metallization...
The integration of silicon (Si) and nanomaterials with infrared light harvesting capability is a promising approach to fabricate large area detecting arrays. However, the construction high quality junction between Si small bandgap colloidal quantum dots (CQDs) remains challenge, which limited their photodetecting performance in short wavelength region (1.4 μm–3 μm). Herein, layer solution processed ZnO nanoparticles was inserted CQDs passivate surface dangling bond silicon. This...
Abstract Laser energy density plays a crucial role in determining the forming quality, microstructure, and mechanical properties of components fabricated by Powder Bed Fusion (LPBF). 0.2 wt.% hexagonal boron nitride (h-BN) reinforced Hastelloy X (HX) composites have been proven to eliminate cracks regulating laser absorption behavior temperature field, thereby reducing gradient carbide segregation. This approach synergistically enhanced both strength elongation HX formed via LPBF. However,...
Nanoparticles of bulk antiferromagnets often exhibit ferromagnetic behavior due to uncompensated surface spins. The peak temperature in the zero-field-cooled magnetization $\mathrm{MnO}$---in contrast other antiferromagnetic nanoparticles---has anomalous behavior, shifting higher temperatures with decreasing nanoparticle size. We attribute this anisotropy enhanced by specific occupancy $3d$ levels Mn, which produces a high-spin--low-spin transition not present $\mathrm{NiO}$ nanoparticles.
Abstract Biodegradable, amphiphilic, linear (diblock and triblock) star‐shaped (three‐armed four‐armed) poly[(ethylene glycol)‐ block ‐(ε‐caprolactone)] copolymers (PEG–PCL copolymers) were synthesized by ring‐opening polymerization of ε‐caprolactone (CL) with stannous octoate as a catalyst, in the presence monomethoxypoly(ethylene glycol) (MPEG), poly(ethylene (PEG), three‐armed (3‐arm PEG) or four‐armed (4‐arm an initiator, respectively. The monomer‐to‐initiator ratio was varied to obtain...
In this paper, an electrochemical sensing platform based on gold nanoparticle modified carbon nanofiber (CNF@AuNPs) as working electrode is proposed for the high sensitivity and selective determination of metronidazole. Meanwhile, sensor has a large linear response range from 0.1 to 2000 μM, limit detection metronidazole (MNZ) low 0.024 μM. The simple prepare reproducible, it shows good results in MNZ analysis tap water.