Inventors:
Steven A. Sunshine - Pasadena CA
Bruce Hermann - Winston Salem NC
Beth C. Munoz - Vista CA
Assignee:
Cyrano Sciences, Inc. - Pasadena CA
International Classification:
G02N 3100
US Classification:
436 8, 436 2, 436147, 436148, 73 232, 73 2321
Abstract:
Devices and methods are disclosed that are effective to produce reliable vapor measurements in the presence of drift. In certain instances the sensor module is mounted externally on a housing. In other instances, the sensor module contains a first sensor element incorporating a first array of sensors and a second sensor element incorporating a second array of sensors wherein both sensor elements are mounted externally on the housing. In other embodiments, the present invention relates to mapping an x-y surface for detection of an analyte, the method includes moving in tandem at least two sensor arrays separated by a distance âdâ across an x-y surface to produce a plurality of responses and analyzing the responses to map the x-y surface for detection of an analyte. Moreover, the present invention provides a sensor module, such as in a handheld device, comprising at least two pneumatic vapor paths and at least two sensor arrays. The dual pneumatic train allows rapid sensing as it increases the duty cycle frequency.