During sintering a powder compact gains strength through low-temperature interparticle bonding, usually induced by solid-state surface diffusion, followed by further strength contributions from high-temperature densification. In cases where a liquid phase forms, sintering densification is accelerated and shape retention is sustained while open pores remain and contribute capillary forces. Unfor...

Lately intense research interests have been focused on the electronic conductivity properties of transition-metal nanoparticles (e.g., Au, Pd, and Ag) that are passivated by an organic monolayer (i.e., the so-called monolayer-protected nanoparticles).1 With such a core-shell composite nanostructure, the resulting conductivity can be tailored by the combined effects of the conductive inorganic c...

The Jurassic Dongyuemiao Member is the most promising target for lacustrine shale gas exploration in Sichuan Basin. By integrating SEM, NMR, LTNA, and MICP experiments, other basic measurements, nanoscale pore category structure corresponding controlling factors of Eastern Basin are studied. results denote that organic pores comprise primary within plant debris secondary bitumen. Inorganic comp...

Abstract We investigate the potential energy curves of rare-gas dimers with various ranges and strengths of interparticle interactions (nuclear-electron, electron-electron, and nuclear-nuclear interactions). Our investigation is based on the highly accurate coupled-cluster theory associated with those interparticle interactions. For comparison, the performance of the corresponding Hartree-Fock ...

Interparticle forces in granular materials are intimately linked to mechanical properties and are known to self-organize into heterogeneous structures, or force chains, under external load. Despite progress in understanding the statistics and spatial distribution of interparticle forces in recent decades, a systematic method for measuring forces in opaque, three-dimensional (3D), frictional, st...

By using electron beam lithography, we fabricated pairs of gold nanoparticles with varying interparticle separation. Double-beam femtosecond transient absorption spectroscopy was used to determine the coherent lattice oscillation frequency as a function of the interparticle separation in the presence of the plasmon field excited by the monitoring probe light. We found that the fractional shift ...

In this paper a water retention model is developed based on soil mineralogy and microscopic features of material behaviour. The estimates the content at given total suction as sum bentonite minerals’ interlayer in interparticle pores. proposes simple formulae to estimate void ratio mineralogical properties. Additionally, uses mercury intrusion porosimetry (MIP) measurements approximate larger v...

Pore structure is the key factor affecting reservoir accumulation and enrichment behavior. Due to complex mineral components pore of shale oil reservoirs strong heterogeneity, it necessary explore micro-pore characteristics inter-salt shale. In this study, in order qualitatively quantitatively analyze reservoirs, as well evaluate composition its spatial distribution characteristics, three sampl...

Ultrasound has become an important synthetic tool in liquid-solid chemical reactions, but the origins of the observed enhancements remained unknown. The effects of high-intensity ultrasound on solid-liquid slurries were examined. Turbulent flow and shock waves produced by acoustic cavitation were found to drive metal particles together at sufficiently high velocities to induce melting upon coll...

Marine shale gas exploration targets are reaching into shallow to deep or ultradeep burial depths. Rock microstructure and reservoir quality emerge as the main risk considerations for a profitable at these large Shallow marine shales occur in Silurian Longmaxi Formation of Weiyuan Block, which is located on southwestern margin Sichuan Basin. However, few details characteristics this Block have ...