Theoretical analysis of a surface acoustic wave gas sensor mechanism using electrical conductive bi-layer nanostructures

Jakubik, W.; Wrotniak, J. A.; Powroźnik, Paulina

doi:10.1016/j.snb.2018.02.106

Cited by 6 publications

(2 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One of the control methods is the arrangement of a heterostructure with a conductivity variable by an applied electric field on the surface of the plate [ 43 , 44 ]. Similar studies were carried out earlier for forward and backward acoustic waves in various piezoelectric materials [ 45 , 46 , 47 , 48 , 49 ]. As for evanescent acoustic waves in piezoelectric plates, such works are currently absent.…”

Section: Introductionsupporting

confidence: 59%

The Experimental Registration of the Evanescent Acoustic Wave in YX LiNbO3 Plate

Smirnov

Зайцев

Teplykh

et al. 2021

Sensors

View full text Add to dashboard Cite

Evanescent acoustic waves are characterized by purely imaginary or complex wavenumbers. Earlier, in 2019 by using a three dimensional (3D) finite element method (FEM) the possibility of the excitation and registration of such waves in the piezoelectric plates was theoretically shown. In this paper the set of the acoustically isolated interdigital transducers (IDTs) with the different spatial periods for excitation and registration of the evanescent acoustic wave in Y-cut X-propagation direction of lithium niobate (LiNbO3) plate was specifically calculated and produced. As a result, the possibility to excite and register the evanescent acoustic wave in the piezoelectric plates was experimentally proved for the first time. The evanescent nature of the registered wave has been established. The theoretical results turned out to be in a good agreement with the experimental ones. The influence of an infinitely thin layer with arbitrary conductivity placed on a plate surface was also investigated. It has been shown that the frequency region of an evanescent acoustic wave existence is very sensitive to the changes of the electrical boundary conditions. The results obtained may be used for the development of the method of the analysis of thin films electric properties based on the study of evanescent waves.

show abstract

Section: Introductionsupporting

confidence: 59%

The Experimental Registration of the Evanescent Acoustic Wave in YX LiNbO3 Plate

Smirnov

Зайцев

Teplykh

et al. 2021

Sensors

View full text Add to dashboard Cite

show abstract

“…SAW-based gas detection is mostly based on chemical or physical adsorption, through the property changes of the sensing film on the SAW device surface. 60 The sensor material coated on the quartz device adsorbs gas molecules from the surrounding atmosphere, and then the propagation velocities of surface waves are changed. Among all the effects, the most significant one is that adsorption of gas molecules results in the changes of mass loading, which leads to the shift of the resonant frequencies.…”

Section: Fundamentals Of Saw Gas Sensing Principles and Mechanismsmentioning

confidence: 99%

Advances in sensing mechanisms and micro/nanostructured sensing layers for surface acoustic wave-based gas sensors

Sun

et al. 2023

J. Mater. Chem. A

View full text Add to dashboard Cite

show abstract

Gas sensors based on mass-sensitive transducers part 1: transducers and receptors—basic understanding

Oprea

2019

Anal Bioanal Chem

View full text Add to dashboard Cite

Theoretical analysis of a surface acoustic wave gas sensor mechanism using electrical conductive bi-layer nanostructures

Cited by 6 publications

References 19 publications

The Experimental Registration of the Evanescent Acoustic Wave in YX LiNbO3 Plate

The Experimental Registration of the Evanescent Acoustic Wave in YX LiNbO3 Plate

Advances in sensing mechanisms and micro/nanostructured sensing layers for surface acoustic wave-based gas sensors

Gas sensors based on mass-sensitive transducers part 1: transducers and receptors—basic understanding

Contact Info

Product

Resources

About