نتایج جستجو برای: surface evaporation
تعداد نتایج: 651335 فیلتر نتایج به سال:
Nanoparticles are being explored in many different applications due to the unique properties offered by quantum effects. To broaden the scope of these applications, the deposition of nanoparticles onto substrates in a simple and controlled way is highly desired. In this study, we use resonant infrared matrix-assisted pulsed laser evaporation (RIR-MAPLE) for the deposition of metallic, silver na...
Absolute measurements of the probability of quantum evaporation of atoms by rotons from the surface of superfluid 4He are still problematic. However, it is possible to obtain information about the wave-vector dependence of the evaporation process by using a refined simulation to interpret the experiments of Brown and Wyatt. Two theories (Guilleumas et al. and Sobnack et al.) are compared with t...
This study examined the relationship between mercury content and mercury evaporation from amalgams during setting. Two different types of commercial high-copper amalgams (single composition and admixed types) were used. Cylindrical specimens of each amalgam were prepared with five different mercury contents according to ADA Specification No.1. Specimens were also prepared by hand condensation. ...
Omniphobic surfaces with reentrant microstructures have been investigated for a range of applications, but the evaporation of high- and low-surface-tension liquid droplets placed on such surfaces has not been rigorously studied. In this work, we develop a technique to fabricate omniphobic surfaces on copper substrates to allow for a systematic examination of the effects of surface topography on...
The evaporation rate of D2O has been determined by Raman thermometry of a droplet train (12–15μm diameter) injected into vacuum (∼10−5 torr). The cooling rate measured as a function of time in vacuum was fit to a model that accounts for temperature gradients between the surface and the core of the droplets, yielding an evaporation coefficient (γe) of 0.57±0.06. This is nearly identical to that ...
The flowing lithium target of a Li(d,xn) fusion relevant neutron source must evacuate the deuteron beam power and generate in a stable manner a flux of neutrons with a broad peak at 14 MeV capable to cause similar phenomena as would undergo the structural materials of plasma facing components of a DEMO like reactors. Whereas the physics of the beam-target interaction are understood and the stab...
Mostly due to desirable mechanical properties (such as high durability and low wear), certain synthetic polymers (such as polyethylene) and metals (such as titanium) have found numerous applications in the medical device arena from orthopedics to the vasculature, yet frequently, they do not proactively encourage desirable cell responses. In an effort to improve the efficacy of such traditional ...
Abstract Introduction: Preparation of tramadol HCl sustained release delivery system as an analgesic drug could improve its efficacy, reduce side effects and increase patient compliance. Objective: The aim of the present study was to prepare tramadol HCl loaded microspheres and coat them by solvent evaporation (ESE) method, in order to obtain an appropriate sustained release behavior and to p...
Evaporation is a recognized contributor to tear film thinning and tear breakup (TBU). Recently, a different type of TBU is observed, where TBU happens under or around a thick area of lipid within a second after a blink. The thick lipid corresponds to a glob. Evaporation alone is too slow to offer a complete explanation of this breakup. It has been argued that the major reason of this rapid tear...
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