Presents results of a study on the optimisation of porous silicon when used as a surface enlarging carrier matrix for immobilized enzymes in a glucose monitoring system. The porous silicon samples were prepared by anodisation in an HF/ethanol electrolyte. Glucose oxidase was coupled onto the porous matrix and the influence of the obtained porous morphologies generated in n- or p-type silicon with varying dopant concentrations was investigated with respect to the corresponding catalytic turn-over. It was found that the recorded catalytic turn-over in general was higher for samples anodised at higher current densities. The highest increase in catalytic turn-over was 350 times for an n-type epi layer on n/sup +/-bulk silicon sample when comparing with the corresponding non-porous sample. The influence of the porous depth with respect to the catalytic turn-over was also investigated. Both planar samples and parallel vertical channel type reactors were investigated. It was found that the efficient porous depth for planar samples was approximately 15-20 /spl mu/m, whereas the reactor structures displayed an efficient catalytic porous depth of 5-10 /spl mu/m.
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机译：当用作葡萄糖监测系统中的固定化酶的表面增大载体基质时，提出了关于多孔硅优化的研究的结果。通过在HF /乙醇电解质中的氧聚处理制备多孔硅样品。葡萄糖氧化酶偶联到多孔基质上，并研究相应于相应的催化转弯对具有不同掺杂剂浓度的N-或p型硅产生的所得多孔形态的影响。发现记录的催化转身通常在较高电流密度下阳性的样品更高。当与相应的非多孔样品相比，在N / SUP +/-散装硅样品上，催化转弯的最高增加为N型EPI层的350倍。还研究了多孔深度相对于催化转弯的影响。研究了平面样品和平行垂直通道型反应器。发现平面样品的有效多孔深度约为15-20 / SPL mu / m，而反应器结构显示出有效的催化多孔深度为5-10 / SPL mu / m。
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