Silicon pillars

Silicon wires or pillars are one-dimensional (ID) structures that are confined in only two dimensions. Weak red PL as well as EL is observed from silicon pillars... 

H. W. Lau, G. J. Parker, and R. Greef, High aspect ratio silicon pillars fabricated by electrochemical etching and oxidation of macroporous silicon. Thin Solid Films 276, 29, 1996. 

Fig. 2 Examples of microstructures for hydrogen fuel water management, (c) silicon pillars as electrode struc-...

Kirchner, T.B., Hatab, N.A., Lavrik, N.V., and Sepaniak, M.J. 2013. Highly ordered silicon pillar arrays as platforms for planar chromatography, Anal. Chem., 85 11802-11808. 

When the substrate consists of an array of silicon pillars, the structural and magnetic properties obtained with the two deposition modes are quite different, as illustrated in Figs. 5.3-37 and 5.3-38 [3.123]. With normal deposition, a rough deposit made of Co, Pt, and CoPt alloy grains is observed (Fig. 5.3-37a), which induces a ferromagnetic coupling between adjacent dots (Fig. 5.3-38a) via the sidewalls and the magnetic deposit in the bottom of the trenches [3.122]. 

Mills D, Nahidi M, Kolasinski KW (2005) Stain etching of silicon pillars and macropores. Phys Status Solidi (a) 202 1422-1426... 

Meltzer S, Mandler D (1995) Study of silicon etching in HBr solutions using a scanning electrochemical microscope. J Chem Soc Faraday Trans 91 1019-1024 Menna P, Difrancia G, Laferrara V (1995) Porous silicon in solar-cells - a review and a description of its application as an AR coating. Sol Energy Mater 37 13-24 Mills D, Kolasinski KW (2004) Laser-etched silicon pillars and their porosification. J Vac Sci Technol A 22 1647-1651... 

Square lattice with silicon pillars or airholes in silicon matrix (proton beam writing + electrochemical etching on p-type Si wafer)... 

Microstructured Hydrogen Fuel Cells, Figure 2 Examples of microstructures for hydrogen fuel cells (a) microchannel flow field (b) silicon microma-chined diffusion media with porous coating for water management (c) silicon pillars as electrode stnjctures (d) porous silicon as a membrane support... 

Roumanie et al. [14] developed a silicon microstructured reactor for gas-solid heterogeneous catalysis, in particular for the dehydrogenation of methylcyclo-hexane. A cathodic Pt film sputtered on silicon pillars of 5 pm x 100 pm was applied. The activity of the sputtered Pt catalyst was an order of magnitude lower as compared to that of a similar catalyst prepared by impregnation of a Pt precursor onto an Y-alumina layer. The sputtering method is thus not advisable for the preparation of supported catalysts in microstructured reactors as lowered reactivity and leaching of the metals during reactions remain serious problems. 

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