期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 76, 期 1-3, 页码 388-392出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/S0925-4005(01)00646-3
关键词
light-addressable potentiometric sensor (LAPS); chemical sensor; sensor; pulsed laser deposition; Ta2O5; porous silicon; penicillinase
Ta2O5 and porous Si were investigated as alternative sensor materials for the light-addressable potentiometric sensor (LAPS). The Ta2O5 LAPS, prepared by the pulsed laser deposition (PLD) technique, showed a high pH sensitivity of 57.5 mV/pH and a good linearity. Porous Si was prepared by anodic etching of Si in a mixture of HF and ethanol. The porous Si LAPS with a Si3N4 layer showed a pH sensitivity of 57.3 mV/pH. As an application of the porous Si LAPS, a penicillin LAPS was fabricated by immobilization of penicillinase on the surface. The pH change due to the enzymatic reaction was detected for the penicillin concentration between 250 muM and 10 mM. (C) 2001 Elsevier Science B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据