“…Nano scale or micro scale flows have been caught much attention due to the fast development of micro-electro-mechanical systems, 1 micro scale devices, e.g., silicon rectangular micro-orifice, 2 micropump, 3–5 microfluidics device, 6 three-dimensional integrated circuits, 7,8 micro scale heat exchanger, 9 the ion release from hollow fibers, 10,11 the drug release from nanoporous fibers, 12–15 and nanofiber membranes. 16–23 Due to capillary action, water will be sucked into the gap of a micro scale device, which will greatly affect the device’s performance.…”