Alternative sensor materials for light-addressable potentiometric sensors

T. Yoshinobu, H. Ecken, A. Poghossian, H. Lüth, H. Iwasaki, M. J. Schöning

研究成果: Conference article査読

33 被引用数 (Scopus)

抄録

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 μM and 10 mM.

本文言語English
ページ(範囲)388-392
ページ数5
ジャーナルSensors and Actuators, B: Chemical
76
1-3
DOI
出版ステータスPublished - 2001 6月 1
外部発表はい
イベントProceeding of the 8th International Meeting on Chemical Sensors - Basel, Switzerland
継続期間: 2000 7月 22000 7月 5

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 器械工学
  • 凝縮系物理学
  • 表面、皮膜および薄膜
  • 金属および合金
  • 電子工学および電気工学
  • 材料化学

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