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Nanoscale roughness in combination with surface chemistry modification can achieve large liquid slippage due to entrapment of air pockets in the surface asperities (superhydrophobic Cassie state). However, pressure increase may result in the collapse of the gaseous enclaves into the fully wet Wenzel state, and in the irreversible loss of the desirable superhydrophobic features. In order to explain...
A maximum laser power of 2.4 W was obtained at a wavelength of ∼ 2040 nm for 23 W of absorbed pump power with a slope efficiency of 21.6 % with respect to absorbed power.
Structured hydrophobic surfaces may present high wall slippage due to the microscopic details of wetting. This behavior can be exploited for reducing wall slippage in micro- and nanofluidic devices. In this work we focus on the influence of meniscus curvature and pressure on the slip length. We use realistic atomistic potentials in order to simulate liquid water (TIP4P/2005) flowing on a smooth/patterned...
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