Electrochemical piezoelectric sensors for trace ionic contaminants

Andle, J.C.; Schweyer, M.G.; Munson, Jon; Roderick, R.; McAllister, D.J.; French, L.A.; Vetelino, J.F.; Watson, Charles; Foley, Janet B.; Bruce, Alice E.; Bruce, Mitchell R. M.

doi:10.1109/freq.1997.638525

Cited by 1 publication

(1 citation statement)

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“…Following this paper, SHAPM sensors have been successfully investigated for many applications. Some non-exhaustive examples of applications include the detection of mercury contamination in water, with (sub)-nanogram sensitivity, by using ZX LNO and −65° Y-rotated quartz plates covered by a gold sensitive membrane to accumulate the mercury via surface amalgamation [78]; the detection of potassium ion concentration in water with a relative frequency shift per unit potassium ion concentration was found equal to −8.37 • 10 −4 for the fundamental mode, using an ST-90° x quartz plate covered with a polyvinyl-chloride-valinomycin membrane [74]; the detection of the concentration of NaCl and tris(hydroxymethyl) aminomethane (Tris) in aqueous solution [79]; or to analyse the surface density changes associated with cell adhesion and proliferation in in vitro conditions, using an STx quartz plate [80].…”

Section: Shear Horizontal Acoustic Plate Mode 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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