We use aerosol techniques to investigate the cohesive and granular properties of solids composed of colloidal semiconductor nanocrystals (quantum dot solids). We form spherical agglomerates of nanocrystals with a nebulizer and direct them toward a carbon substrate at low (~0.01 m/s) or high (~100 m/s) velocities. We then study the morphology of the deposit (i.e., the "splat") after impact. By v...

This report describes the rheological analysisof the present Ag nanoparticle ink, and confirms that it is suitable for the piezoelectric drop-on-demand printing for both of 1 pL and 10 pL cartridges. The satellite drops and the splashing on the substrate are also discussed for optimization of the nozzle temperature and the jetting voltage. The minimum horizontal and vertical line widths are sho...

Fluid animations are becoming a standard tool for computer animators. Simulation of turbulent gases, running water, eroded surfaces, or splashing waves are common, but still demanding because they are usually calculated in a voxel space. This brings new requirements to the tools that are used for such animations. The data structures are enormous but providing a good space and time coherency. We...

Loss of plasma co@nement causes surface and structural damage to plasma-facing materials (PFMs) and remains a major obstacle for tokamak reactors. The deposited plasma energy results in surface erosion and structural failure. The surface erosion consists of vaporization, spallation, and liquid splatter of metallic materials, while the structural damage includes large temperature increases in st...

The impact of large droplets onto an otherwise undisturbed layer of water is considered. The work, which is motivated primarily with regard to aircraft icing, is to try and help understand the role of splashing on the formation of ice on a wing, in particular for large droplets where splash appears to have a significant effect. Analytical and numerical approaches are used to investigate a singl...

Abstract In counteracting fouling phenomenon in gas turbines, which leads to system inefficiencies and performance degradation, water washing technique is very often adopted. Water droplets sprays are injected and, hitting the solid surfaces, remove dirt deposition. Among collateral undesirable phenomena related washing, blades erosion liquid film formation most remarkable. Despite former issue...

The effect on meat quality of a low stress handling system (LSS) compared with a traditional handling system (TS) was investigated in Duroc×(Landrace×Yorkshire; n=117) and (Hampshire×Duroc)×(Landrace×Yorkshire) pigs (n=110) under commercial conditions. In the low-stress handling system the pigs were kept in groups of 15 during lairage and movement up to the stunner. Before the stunner the group...

This paper presents the morphological evolution characteristics of a droplet impacting V-shaped wall by using lattice Boltzmann method (LBM). Four parameters are investigated comprehensively. The vary over wide ranges: surface wettability ( $$60^\circ \le \theta ^{eq} 120^\circ $$ ), Weber number $$102.27 \text {We} 3681.82$$ bending angle (90 $$^\circ 180^\circ and eccentricity ratio (0 $$\le ...