Numerical and Experimental Study on Fabrication of Microstructure Array with Topographical Gradient via Through-Mask EMM

Quan Dai Wang; Ji Ming Xiao; Yan Jun Lü

doi:10.4028/www.scientific.net/AMR.528.254

Paper Titles

Monte Carlo Simulation of Alpha (α) Particles Penetration in Nanoscale Silicon Semiconductor Materials
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Differences of Nano-Structure between Waxy and Normal Starch
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Effect of TiO₂ Compact Layer on Optical Absorption and Fluorescence Performance of R6G/PMMA Composite Light - Guided Films
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Enhanced Electrochromic Performance of Sol-Gel Derived WO₃ Thin Films Assisted by Electrospun PVA Nanofibers
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Numerical and Experimental Study on Fabrication of Microstructure Array with Topographical Gradient via Through-Mask EMM
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Photocatalytic Degradation of Sulfonamides over the Short Multi-Walled Carbon Nanotube-TiO₂ Hybrid
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Study on Surface Modification of Nano-Alumina with Silicane Coupling Agent KH550
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Synthesis and Properties of ZSM-5/MCM-41 Composite Zeolite with a Core-Shell Structure for Cracking of Supercritical n-dodecane
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The Light Absorption Properties of Cu₂S Nanowire Arrays
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 528Numerical and Experimental Study on Fabrication of...

Numerical and Experimental Study on Fabrication of Microstructure Array with Topographical Gradient via Through-Mask EMM

Abstract:

To obtain textured surface with low friction and high fluid load support capacity, in this work, based on the basic tenet of fluid film lubrication theory that converging gap is the first necessary condition to generate a hydrodynamic pressure in a confined fluid film, a fabrication method via through-mask electrochemical micromachining (EMM) for microstructure array on metal substrate with topographical gradient in a single micromachining step is investigated. After analyzing the factors that influence the current density distribution on the anode surface in EMM process, three potentially feasible schemes are presented and their fabrication results are predicted through numerical simulation. Combining the simulation results with practical application requirements, the scheme with machining gap gradient is adopted. With the selected fabrication scheme, the experiments are performed and the microstructure array with a feature size of 25μm and a height variance from 12μm to 24μm within 2mm distance has been produced successfully, which is in good agreement with the numerical calculation prediction.