A5010030946- Advanced Thermodynamic Systems and Engines
- Metal and Thin Film Mechanics
- Copper Interconnects and Reliability
- Spacecraft and Cryogenic Technologies
- Ion-surface interactions and analysis
- Superconducting and THz Device Technology
- Semiconductor materials and devices
- nanoparticles nucleation surface interactions
- Refrigeration and Air Conditioning Technologies
- Electronic Packaging and Soldering Technologies
- Electromagnetic wave absorption materials
- Magnetic properties of thin films
- 2D Materials and Applications
- Thermodynamic and Exergetic Analyses of Power and Cooling Systems
- Concrete and Cement Materials Research
- Magnesium Oxide Properties and Applications
- MXene and MAX Phase Materials
- Icing and De-icing Technologies
- Advanced Antenna and Metasurface Technologies
- Phase Change Materials Research
- Insect and Pesticide Research
- Advanced Materials Characterization Techniques
- Supercapacitor Materials and Fabrication
- Metal Forming Simulation Techniques
- Cellular and Composite Structures
China University of Petroleum, Beijing
2025
Nanjing Institute of Technology
2023-2024
Anhui Xinhua University
2024
Technical Institute of Physics and Chemistry
2017-2023
Chinese Academy of Sciences
2017-2022
Seagate (United States)
2008
University of Virginia
2000-2007
Zamorano Pan-American Agricultural School
2000
In doped transition metal dichalcogenides, optically created excitons (bound electron-hole pairs) can strongly interact with a Fermi sea of electrons to form polaron quasiparticles. When there are two distinct seas, as is the case in WSe$_2$, flavors lowest-energy (attractive) polarons -- singlet and triplet where exciton coupled same or opposite valley, respectively. Using two-dimensional coherent electronic spectroscopy, we analyze how their quantum decoherence evolves doping density...
Icing presents substantial economic challenges and endangers equipment safety. Contemporary anti-icing research emphasizes the integration of active passive technologies, with a particular focus on mitigating ice adhesion for more efficient deicing solutions. In this study, multilayer composite antideicing surface is developed, integrating energy storage, photo-/electro-thermal functionalities, superslippery properties. The top quasi-solid slippery layer, composed epoxy resin embedded...
Molecular dynamics simulations and selected experiments have been carried out to study the growth of Cu films on (010) bcc Ta deposition CuxTa1−x alloy (111) fcc Cu. They indicate that with a texture are always formed when is deposited surfaces. These polycrystalline even substrate single crystalline. The grains one two different orientations separated by either orientational or misfit dislocations. Periodic dislocations stacking faults develop within these release structure difference...
As energy and environmental issues become more prominent, people must find sustainable, green development paths. Bio-based polymeric phase change storage materials provide solutions to cope with these problems. Therefore, in this paper, a fully degradable polyethylene glycol (PEG20000)/polylactic acid (PLA)/g-C3N4 composite material (CPCM) was obtained by confinement. The CPCM characterized FTIR SEM for compatibility, XRD nanoindentation mechanical properties DSC, LFA, TG thermal properties....
The spin dependent electron transport in giant magnetoresistive (GMR) multilayers is significantly affected by the atomic scale structure of their interfaces. Devices with atomically flat and chemically sharp interfaces are preferred for magnetic sensor memory applications. Recent simulations atom-by-atom assembly these devices indicate that near optimal interfacial structures can be created using low energy, ion assisted vapor deposition techniques energies 5–10eV range. A recently...
The instability of UV anti-corrosion coatings poses a significant threat to both air quality and the environment, highlighting urgent need for efficient eco-friendly coatings. In this study, we synthesized novel material, MXene, known its well-defined layered structure exceptional conductivity, by employing MAX phase etching process. Our investigation encompassed assessment MXene’s compatibility within coating systems, as well dispersion stability composite systems. We observed that...
A combination of molecular dynamics simulations and experiments has been used to investigate the use various low energy ion assisted vapor deposition approaches for controlling interfacial structures a model copper∕tantalum multilayer system. Films were grown using argon beam assistance with either fixed or modulated during metal deposition. The effect sequential (after layer’s deposition) was also investigated. varied between 0 50eV on atomic scale structure Ta∕Cu film interfaces electrical...
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As very low temperature high frequency pulse tube cryocooler is the precondition of many space detection researches, it has been a hot topic in field cryocooler. Improving cryocooler's performance common goal researchers. In this paper, regenerator material and compressor second-stage as well first-stage are experimentally optimized using new thermally coupled Finally, more than 20mW cooling power achieved at 8K electric decreases from 450W to 300W. The results increase reliability...
In this study, CO₂ reacted with a curing agent through nucleophilic addition to form ammonium salts, enabling stable capture and internal release of CO₂, thereby achieving gas-phase nucleation foaming epoxy resin without the use nucleating agents. Further, absorbing is in-troduced coupling mechanism assist uniform foaming. The nucle-ation-free process, relying on induced growth initial gas nuclei synergistic effect wave-absorbing agents, effectively eliminates uneven issues caused by...
In this study, CO2 reacted with a curing agent through nucleophilic addition to form ammonium salts, enabling the stable capture and internal release of CO2, which achieved gas-phase nucleation foaming. Additionally, introduction wave-absorbing agents improved absorption mechanism promoted uniform This nucleation-free foaming process relies on induced growth gas nuclei synergistic effect agents, effectively preventing uneven issues caused by traditional nucleating agents. Ultimately,...
The low temperature fridge is used for doing some experiments and storing special products at the of -80 °C ~ -150 °C. Compared with conventional cascade fridge, pulse tube cryocooler has advantages reliability, compactness, green refrigerant large range temperature, which been considered as an ideal fridge. In order to design a PTC in -80°C~ -150C, numerical model coaxial built by using SAGE. Based on this model, influence regenerator length diameter optimal cold-end are analyzed key...
The atomic-scale structures and properties of thin films are critically determined by the various kinetic processes activated during their atomic assembly. Molecular dynamics simulations growth allow these to be realistically addressed at a timescale that is difficult reach using ab initio calculations. newest approaches have begun enable simulation applied for wide range materials. Embedded atom method potentials can successfully used simulate closely packed metal multilayers. Modified...
As very low temperature high frequency pulse tube cryocooler has been a hot topic in the field of cryocooler, improving cryocooler's performance is common goal researchers. By integrating former results, we found that regenerator material key factor for improvement efficiency. In this paper, methods simulation and experiment were used to investigate influence stacking style on 6K cryocooler. Finally, lowest dropped from 8.8K 6.7K more than 10mW cooling power achieved at 8K with two-stage...
It is always been a research hotspot to improve the overall efficiency of Stirling pulse tube cryocoolers (SPTCs). The regenerator as vital component directly determines performance SPTCs. Therefore, an approach provided by improving regenerator. factors for influence three regenerators structure on are analyzed and discussed 8W@80K SPTC Sage model. simulation results show optimal with different varies compressor PV power input. Moreover, in terms efficiency, smaller volume is, higher will...