Surface Acoustic Wave Devices for Harsh Environment

Caliendo, Cinzia

doi:10.5772/21665

Cited by 2 publications

(1 citation statement)

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“…In harsh environment applications (such as high temperature or corrosive environments), the metal used to fabricate the IDTs should exhibit a high electrical conductivity, high melting temperature, a good resistance to oxidation and chemical inertness. Iridium, rhodium and platinum are a few examples of metals suitable for harsh environment applications [23][24][25][26].…”

Section: Pseudo Saw and High Velocity Psaw Sensorsmentioning

confidence: 99%

Guided acoustic wave sensors for liquid environments

Caliendo

Hamidullah

2019

J. Phys. D: Appl. Phys.

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Surface acoustic wave (SAW) based sensors for applications to gaseous environments have been widely investigated since the last 1970s. More recently, the SAW-based sensors focus has shifted towards liquid-phase sensing applications: the SAW sensor contacts directly the solution to be tested and can be utilized for characterizing physical and chemical properties of liquids, as well as for biochemical sensor applications. The design of liquid phase sensors requires the selection of several parameters, such as the acoustic wave polarizations (i.e., elliptical, longitudinal and shear horizontal), the wave-guiding medium composition (i.e., homogeneous or non-homogeneous half-spaces, finite thickness plates or composite suspended membranes), the substrate material type and its crystallographic orientation. The paper provides an overview of different types of SAW sensors suitable for application to liquid environments, and intents to direct the attention of the designers to combinations of materials, waves nature and electrode structures that affect the sensor performances. ORCID iDsC Caliendo https://orcid.org/0000-0002-8363-2972 M Hamidullah https://orcid.org/0000-0003-2131-4335

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Section: Pseudo Saw and High Velocity Psaw Sensorsmentioning

confidence: 99%