A5036355398- Polymer Surface Interaction Studies
- Adhesion, Friction, and Surface Interactions
- Force Microscopy Techniques and Applications
- Hydraulic Fracturing and Reservoir Analysis
- Hydrocarbon exploration and reservoir analysis
- NMR spectroscopy and applications
- Biocrusts and Microbial Ecology
- Lubricants and Their Additives
- Hemoglobin structure and function
- Advanced Sensor and Energy Harvesting Materials
- Natural Fiber Reinforced Composites
- Acoustic Wave Phenomena Research
- Computer Graphics and Visualization Techniques
- Polymer crystallization and properties
- Surfactants and Colloidal Systems
- Advanced Materials and Mechanics
- Tardigrade Biology and Ecology
- Pickering emulsions and particle stabilization
- Molecular Junctions and Nanostructures
- Surface Modification and Superhydrophobicity
- Chaos control and synchronization
- Electrical Fault Detection and Protection
- Photonic Crystals and Applications
- Photorefractive and Nonlinear Optics
- Solid State Laser Technologies
Southwest Petroleum University
2017-2018
State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation
2017-2018
Tiangong University
2017
Nanjing University of Posts and Telecommunications
2016
University of Oxford
2006-2010
University of Sheffield
2009
Weizmann Institute of Science
2009
Ordnance Engineering College
2009
The very low sliding friction at natural synovial joints, which have coefficients of mu < 0.002 pressures up to 5 megapascals or more, has date not been attained in any human-made joints between model surfaces aqueous environments. We found that water bearing polyzwitterionic brushes were polymerized directly from the surface can values as 0.0004 high 7.5 megapascals. This extreme lubrication is attributed primarily strong hydration phosphorylcholine-like monomers make robustly attached...
Polymers offer the advantage that they may independently combine desirable supramolecular structure with useful local monomeric properties to yield optimal performance of different tasks. Here we utilise remarkable lubricating both dense polymer brushes, and hydration sheaths about charges via emerging paradigm lubrication, design a grafted-from polyzwitterionic brush system, where each monomers has similar highly-hydrated phosphorylcholine headgroups phosphatidylcholine lipids. Such...
Erucamide is known to play a critical role in modifying polymer fiber surface chemistry and morphology. However, its effects on crystallinity mechanical properties remain be understood. Here, synchrotron nanofocused X-ray Diffraction (nXRD) revealed bimodal orientation of the constituent chains aligned along axis cross-section, respectively. promoted fiber, leading larger more numerous lamellae crystallites. The nXRD nanostructual characterization complemented by single-fiber uniaxial...
Robust polymer brushes are grown from a planar mica surface (see figure) using atom-transfer radical polymerization. The characterized by X-ray photoelectron spectroscopy, reflectometry, atomic force microscopy, optical interferometry, and forces.
Understanding the structure of polymer/surfactant mixtures at air-water interface is fundamental importance and also relevance to a variety practical applications. Here, complexation between neutral 'tardigrade' comb co-polymer (consisting hydrophilic polyethylene glycol backbone with hydrophobic polyvinyl acetate grafts, PEG-g-PVAc) an anionic surfactant (sodium dodecyl sulfate, SDS) has been studied. Contrast-matched neutron reflectivity (NR) complemented by surface tension measurements...
Understanding the nanostructure and nanomechanical properties of surface layers erucamide, in particular molecular orientation outermost layer, is important to its widespread use as a slip additive polymer materials. Extending our recent observations nanomorphologies erucamide on hydrophilic silica substrate, here we evaluate more hydrophobic polypropylene surface. Atomic force microscopy (AFM) imaging revealed packing, thickness, coverage layers, while peak quantitative mapping (QNM) showed...
Fifteen tight cores from Chinese Ordos basin were selected to obtain the irreducible water fully-saturated by centrifuging with rotational speeds increased 0 10,000 r/min, T2 spectra measured a low-field NMR core analysis unit concurrently. The showed tri-modal pattern and ranged in 0~6, 6~100 100~1000 ms, which corresponded micro-, meso- macro- pore spaces, respectively. reached at speed of r/min saturation varied 38.695~55.728%. Pore distributions constant-rate mercury injection adopted...
The bidirectional reflectance distribution function (BRDF) data are essential for analyzing and modeling the material appearance of anisotropic surfaces. In order to acquire four-dimensional BRDF on surfaces, a four-axis gonioreflectometer was designed implemented. instrument consists collimated, broadband light source, rotation mechanism, spectroradiometer, control system. is able carry out spectral measurements over most incident reflection hemispheres entire visible spectrum. One thousand...
A planar waveguide in the Nd[Formula: see text]-doped fluorophosphate glass is fabricated by a 6.0 MeV C[Formula: text] ion implantation at low-fluence of [Formula: ions/cm 2 . The fluence close to that semiconductor industry. dark mode spectra are recorded model 2010 prism coupler. energy losses during process and refractive index profile simulated SRIM code reflectivity calculation method (RCM), respectively. near-field light intensity propagation loss measured an end-face coupling system....
Fifteen tight cores from Chinese Ordos basin were selected to obtain the irreducible water fully-saturated by centrifuging with rotational speeds increased 0 10,000 r/min, T2 spectra measured a low-field NMR core analysis unit concurrently. The showed tri-modal pattern and ranged in 0~6, 6~100 100~1000 ms, which corresponded micro-, meso- macro- pore spaces, respectively. reached at speed of r/min saturation varied 38.695~55.728%. Pore distributions constant-rate mercury injection adopted...
The discovery of quantum Hall effect and spin has set off a new research upsurge in condensed matter physics. As is analogous to electronic systems, many novel optical acoustic control devices have been designed by using the defects- immune backscatter suppression topological edges photonic crystals phononic crystals, which greatly enriches current physical world arouses more enthusiasm. With study structure, it found that realization good reconfigurability, compatibility against...
In the present paper, duffing system is used to produce chaotic time series which then reconstruct phase space, RCD algorithm computer largest Lyapunov characteristic exponent (LCE1), detailed program of these tasks successfully debugged in Matlab 7.1 given, experiment method choose parameter program, LCE1 and dichotomy find value makes critical chaos state, relation between also revealed by this method, simulation results about analyzed measuring amplitude weak sine signal with proved...
For the vacuum arc, parameters of interelectrode plasma have influences on electrode process. It is necessary to obtain and characteristics by simulating among electrodes. In this paper, based analysis existing arc model, combined with fault under different interrupting conditions, effects mean charge number ion kinetic energy are considered. Moreover, magnetohydrodynamic (MHD) model derived boundary conditions determined. And using Fluent software as computing platform VC++ self-programming...