Home > Explosives Detection > Technology > Sensors > Surface Acoustic Wave (SAW)

SAW detectors rely on chemically selective polymers that absorb target gases, producing a measurable change in a property of the polymer (resistance, capacitance, etc.). SAW sensors are piezoelectric crystals that detect the mass of chemical vapors absorbed into chemically selective coatings on the sensor surface. This absorption causes a change in the resonant frequency of the sensor. Many SAW sensor coatings have unique physical properties that allow reversible adsorption of chemical vapors.

Manufacturer
Biosensor Applications Sweden AB (1)
Defiant Technologies (2)
Electronic Sensor Technology, Inc. (1)
SenGenuity (1)
Transportability
Pocket Size (2)
Person-Portable (2)
Benchtop/Fixed (1)
Availability
Commercially Available (3)
Discontinued (2)
Unit Cost
$5,000 - $10,000 (1)
$20,000 - $50,000 (1)
$50,000 - $100,000 (1)
N/A (2)
Sample Introduction
Solid (2)
Liquid (1)
Vapor/Gas (2)
Sensitivity / Detection Limit
ppm (1)
ppb (1)
ng (1)
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Biosens

Biosens

Biosensor Applications Sweden AB

Biosens instruments are based on an immunoassay combined with Surface Acoustic Wave (SAW) detection ...

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Canary-0

Canary-0

Defiant Technologies

Canary-0 provides a gas detection module similar to that found in the other Canary models, but minim...

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CANARY-0 OEM

CANARY-0 OEM

Defiant Technologies

A pre-concentrator has a special coating to collect the target analytes. The sample then moves to t...

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Wireless SAW Temperature Sensor System

Wireless SAW Temperature Sensor System

SenGenuity

SenGenuity offers a passive (no batteries and no energy harvesting), wirelessly interrogated, SAW b...

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zNose Series

zNose Series

Electronic Sensor Technology, Inc.

The Model 4300 zNose is a fully portable GC/SAW that can detect and analyze all types of vapors and ...

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