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We demonstrate a self-assembly process of charged metallic or semiconducting nanoparticles on silicon substrates using conventional photoresist patterning. The self-assembly of nanoparticles is mainly due to a self-electric focusing effect created by the electric field of charged nanoparticles landed on the photoresist patterns. The detailed parameters that affect the focusing effect are investigated...
Nanoparticles play an important role in applications, such as field emission display, drug delivery and antireflection coatings etc. Aided electrical field, which is generated by positive charges on the insulated photoresist, is introduced in this paper to deposit as-sprayed polymer nanoparticles to the patterned area of the substrate. The experiment results demonstrate that when the solution concentration...
Well aligned Si nanowires (SiNWs) by Vapor-Liquid-Solid growth process are presented. Instead of using H2, the current work uses N2 as carrier gas. The growth conditions of SiNWs are controlled by the ratio of nitrogen versus silane gas. Tapering of nanowires was found at T=620degC and P=333 m torr, and the tapering parameter was reduced by increasing the N2 gas. Tapering of nanowires is attributed...
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