๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Silica surface sensitization and chemical sensors

โœ Scribed by Prof. Paul Clechet; Dr. Nicole Jaffrezic-Renault

Publisher
John Wiley and Sons
Year
1990
Tongue
English
Weight
601 KB
Volume
2
Category
Article
ISSN
0935-9648

No coin nor oath required. For personal study only.

โœฆ Synopsis

Abstract

The surface modification of materials and its control now appear to be a challenge in many fields of technology, for example, composites, chromatography, and chemical sensors.

A well controlled engineering process for producing selfโ€assembled long chain monolayers on a thin thermal silica layer has been perfected in our laboratory. The monolayers are covalently bonded to SiO~2~/Si(100) heterostructures and have been chemically (chemical analysis, pH sensitivity) and physically (spectroellipsometric and capacitance measurements) characterized.

The application of this process for sensitizing the surface of the silica insulator used in CHEMFET chemical sensors is presented using the example of an Agยฎ sensitive device. The main features of this sensor are its short response time(< 2 s) and its long lifetime (> 3 months).

๐Ÿ“œ SIMILAR VOLUMES

Ag+-sensitive ISFET with a chemically mo
Ag+-sensitive ISFET with a chemically modified silica surface
โœ A. Bouazizi; H. Maaref; N. Jaffrezic-Renault ๐Ÿ“‚ Article ๐Ÿ“… 1994 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 272 KB

An Ag+-sensitive ion-selective field effect transistor (ISLET) is prepared by deposition of the copolymer cyanopropyl methyl (lo-12%)-dimethylsiloxane (88~90%) on the silica gate insulator. The corresponding REFET (reference field effect transistor) is prepared by deposition of polymethyl hexyl silo

Chemical electrode surface plasmon reson
Chemical electrode surface plasmon resonance sensor
โœ C.C. Jung; S.B. Saban; S.S. Yee; R.B. Darling ๐Ÿ“‚ Article ๐Ÿ“… 1996 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 404 KB

The first experimental results are presented for a device that combines a surface plasmon resonance sensor with the technique of anodic stripping voltammetry. Concentrations of 10 ppm Cu and 13.76 ppm Pb are selectively detected by the surface plasmon resonance sensor in a 0.05 M acetate buffer solu

Surface plasmon resonance sensors using
Surface plasmon resonance sensors using silica-on-silicon optical waveguides
โœ Yi-Shin Chu; Wen-Hao Hsu; Chii-Wann Lin; Way-Seen Wang ๐Ÿ“‚ Article ๐Ÿ“… 2006 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 152 KB

## Abstract Surface plasmon resonance (SPR) sensors made by multimode silicaโ€onโ€silicon channel waveguides are investigated theoretically and experimentally. Promising sensing characteristics, with sensitivity up to 4547 nm/RIU, are observed over a wide detection range without a conventional tuning