MINIATURIZATION OF ORGANICALLY DOPED SOL-GEL MATERIALS - A MICRONS-SIZE FLUORESCENT PH SENSOR

被引：65

作者：

SAMUEL, J ^{[1
]}

STRINKOVSKI, A ^{[1
]}

LIEBERMAN, K ^{[1
]}

OTTOLENGHI, M ^{[1
]}

AVNIR, D ^{[1
]}

LEWIS, A ^{[1
]}

机构：

[1] HEBREW UNIV JERUSALEM,DIV APPL PHYS,IL-91904 JERUSALEM,ISRAEL

来源：

MATERIALS LETTERS | 1994年 / 21卷 / 5-6期

关键词：

D O I：

10.1016/0167-577X(94)90254-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Miniaturization of a reactive doped sol-gel material is described. A reversible fluorescent pH sensor was constructed by placing a pyranine doped SiO2 sol-gel matrix at a 10 mu m tip of a metal coated micropipette. Subsecond response time was achieved by further downscaling to similar to 1 mu m. Using optical near-field microscopy configuration, these observations demonstrate the potential of constructing a variety of miniaturized sensors and chemical manipulators, by doping the sol-gel matrix with a suitable reagent.

引用

页码：431 / 434

页数：4

共 18 条

[1] AVNIR D, 1994, IN PRESS CHEM MATER
[2] AVNIR D, 1987, J NONCRYST SOLIDS, V192, P177
[3] BIOCHEMICALLY ACTIVE SOL-GEL GLASSES - THE TRAPPING OF ENZYMES
BRAUN, S
RAPPOPORT, S
ZUSMAN, R
AVNIR, D
OTTOLENGHI, M
[J]. MATERIALS LETTERS, 1990, 10 (1-2) : 1 - 5
[4] SUPERRESOLUTION FLUORESCENCE NEAR-FIELD SCANNING OPTICAL MICROSCOPY
HAROOTUNIAN, A
BETZIG, E
ISAACSON, M
LEWIS, A
[J]. APPLIED PHYSICS LETTERS, 1986, 49 (11) : 674 - 676
[5] ENTRAPMENT OF VIABLE MICROORGANISMS BY SIO2 SOL-GEL LAYERS ON GLASS SURFACES - TRAPPING, CATALYTIC PERFORMANCE AND IMMOBILIZATION DURABILITY OF SACCHAROMYCES-CEREVISIAE
INAMA, L
DIRE, S
CARTURAN, G
CAVAZZA, A
[J]. JOURNAL OF BIOTECHNOLOGY, 1993, 30 (02) : 197 - 210
[6] WATER-CONSUMPTION DURING THE EARLY STAGES OF THE SOL-GEL TETRAMETHYLORTHOSILICATE POLYMERIZATION AS PROBED BY EXCITED-STATE PROTON-TRANSFER
KAUFMAN, VR
AVNIR, D
PINESROJANSKI, D
HUPPERT, D
[J]. JOURNAL OF NON-CRYSTALLINE SOLIDS, 1988, 99 (2-3) : 379 - 386
[7] KLEIN LC, 1994, SOL GEL OPTICS PROCE, P539
[8] KUROKAWA Y, 1993, CARBOHYD POLYM, V23, P1
[9] LEV O, 1992, ANALUSIS, V20, P243
[10] NEAR-FIELD OPTICAL IMAGING WITH A NON-EVANESCENTLY EXCITED HIGH-BRIGHTNESS LIGHT-SOURCE OF SUBWAVELENGTH DIMENSIONS
LEWIS, A
LIEBERMAN, K
[J]. NATURE, 1991, 354 (6350) : 214 - 216

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