A5100602371- Ultrasonics and Acoustic Wave Propagation
- Acoustic Wave Resonator Technologies
- Thermography and Photoacoustic Techniques
- Photoacoustic and Ultrasonic Imaging
- Acoustic Wave Phenomena Research
- Gas Sensing Nanomaterials and Sensors
- Mechanical and Optical Resonators
- Lanthanide and Transition Metal Complexes
- Advanced Fiber Optic Sensors
- Advanced MEMS and NEMS Technologies
- Luminescence Properties of Advanced Materials
- Laser Material Processing Techniques
- ZnO doping and properties
- Advanced Thermodynamic Systems and Engines
- Metamaterials and Metasurfaces Applications
- Catalytic Processes in Materials Science
- Analytical Chemistry and Sensors
- solar cell performance optimization
- Thermal Radiation and Cooling Technologies
- Advanced Chemical Sensor Technologies
- Thermal properties of materials
- Force Microscopy Techniques and Applications
- Aerodynamics and Acoustics in Jet Flows
- Electronic and Structural Properties of Oxides
- Underwater Acoustics Research
Massachusetts Institute of Technology
2025
Nanjing University of Science and Technology
2023-2025
Shaoxing University
2025
Zhejiang University
2025
Center for Life Sciences
2025
Institute of Acoustics
2015-2024
Nanjing University
2015-2024
Yunnan Normal University
2021-2024
Beijing University of Chemical Technology
2024
Soochow University
2024
Understanding the structures of catalysts under realistic conditions with atomic precision is crucial to design better materials for challenging transformations. Under reducing conditions, certain reducible supports migrate onto supported metallic particles and create strong metal-support states that drastically change reactivity systems. The details this process are still unclear preclude its thorough exploitation. Here, we report an description a palladium/titania (Pd/TiO2) system by...
CoS/FeS 2 heterojunction nanosheets on a MXene with excellent electrocatalytic OER performance are realized by dual molten salt etching strategy.
The effect of modifying Pd/Al2O3 catalysts by atomic layer deposition 1 nm ZrO2 films was studied. For on oxidized, PdO/Al2O3 catalysts, TEM imaging, EDS mapping, and metal-dispersion measurements confirmed the presence thin over both Al2O3 support metal particles. were surprisingly stable, forming a well-crystallized phase only above 1173 K. coating PdO particles created semicore–shell-like structure that stabilized against sintering in air at 1073 Steady-state, methane oxidation rates...
Abstract The exceptional activity for methane combustion of modular palladium–ceria core–shell subunits on silicon-functionalized alumina that was recently reported has created renewed interest in the potential structures as catalysts. Here we report our use advanced ex situ and electron microscopy with atomic resolution to show undergo structural evolution over a wide temperature range. In observations performed an atmospheric gas cell within this range provide real-time evidence palladium...
Insulating against low-frequency sound (below 500 Hz) remains challenging despite the progress that has been achieved in insulation and absorption. In this work, an acoustic metamaterial based on membrane-coated perforated plates is presented for achieving a range, even covering lower audio frequency limit, 20 Hz. Theoretical analysis finite element simulations demonstrate can effectively block waves over wide band regardless of incident angles. Two mechanisms, non-resonance monopolar...
A mirage-effect thermal-wave method for the measurement of thermal diffusivities solids is described. Data from two different laboratories are provided various pure elements and compound semiconductor materials. In most cases agreement with literature values good.
Scanning transmission electron microscopy of high-surface-area Rh-doped CaTiO3 powder, conducted near atmospheric pressure at elevated temperature (250–700 °C) by means an electron-transparent gas cell with a sample heater, provides evidence for both cyclical precipitation–dissolution Rh nanoparticles in response to redox cycling the ambient and sintering powder.
Dispersed nickel catalysts were prepared by decomposition of an oil-soluble compound precursor in residue. Effects these on residue conversion and coke formation investigated autoclave simulating slurry-phase hydrocracking. The results this study demonstrate the following: as catalyst's concentration increased, yield light oil (Nap + AGO) decreased; reaction pressure increase, decreased but increased; temperature increases. dispersed used for slurry phase hydrocracking separated from...
Recently, Lemoult et al (2011 Phys. Rev. Lett. 107 064301) used time reversal to focus sound above an array of soda cans into a spot much smaller than the acoustic wavelength in air. In this study, we show that equally sharp focusing can be achieved without reversal, by arranging transducers around nearly circular cans. The size focal at center is made progressively as frequency approaches Helmholtz resonance from below, and, near resonance, becomes single can. We locally resonant...
Mach-Zehnder modulators (MZMs) are the most commonly used external for optical communication links. The bias point of MZMs may drift due to environmental changes in practical applications, leading system performance degradation. latest decoy-state twin-field quantum key distribution (TF-QKD) requires multiple generate multi-level light intensities and maintain an ultra-high extinction ratio between signal-state vacuum-state light. This is essential ensure QKD security extend transmission...
Abstract Herein, the photoluminescence (PL) measurements were used to study and investigate degradation behavior of flexible GaInP/GaAs/InGaAs inverted metamorphic triple-junction (IMM3J) photovoltaics (PV) under 1 MeV electron irradiation. The changes in PL intensity with varying irradiation fluence enabled acquisition effective minority carrier lifetimes ( τ eff ) for top GaInP, middle GaAs, bottom InGaAs subcells different conditions. Comparing before after irradiation, it was found that...