A Caltech Library Service

Integration of analog VLSI and thin films for chemical sensing arrays


Dickson, Jeffrey Allen (1999) Integration of analog VLSI and thin films for chemical sensing arrays. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/9rg8-4a38.


Chemical sensors are typically discrete elements, each sensitive to a particular odor. Current chemical sensing systems are unable to detect a wide range of chemicals. Moreover, the lack of an integrated sensor technology prevents the fabrication large arrays of chemical sensors.

A sensing technology is presented that integrates chemical sensors based on conducting carbon black particles and polymers with standard integrated circuit technology. An integrated circuit for array sensing is presented. The necessary post processing steps, consisting of and electroless gold deposition and subsequent polymer deposition, are discussed. The system is demonstrated to function as an array of individually addressable chemical sensors.

In addition, a novel nonvolatile analog storage element based on floating gates is presented. The application of this circuit and floating gate adaptation to ratiometric sensing is demonstrated.

Item Type:Thesis (Dissertation (Ph.D.))
Degree Grantor:California Institute of Technology
Division:Engineering and Applied Science
Major Option:Electrical Engineering
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Goodman, Rodney M.
Thesis Committee:
  • Unknown, Unknown
Defense Date:21 May 1999
Record Number:CaltechETD:etd-02062008-131420
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:532
Deposited By: Imported from ETD-db
Deposited On:07 Mar 2008
Last Modified:16 Apr 2021 23:18

Thesis Files

PDF (Dickson_ja_1999.pdf) - Final Version
See Usage Policy.


Repository Staff Only: item control page