Simplified Model for FEM Simulation of SAW Delay Line Sensor

Ramakrishnan, N.; Namdeo, Ashish Kumar; Nemade, Harshal B.; Paily, Roy

doi:10.1016/j.proeng.2012.07.278

Cited by 11 publications

(4 citation statements)

References 9 publications

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“…The temperature behavior of S11 is attributed to the thermal expansion, which would enlarge finger size (a) and spacing (b), and consequently causes the increase of the wavelength (since λ=2(a+b)). The increase of the wavelength would decrease the frequency according to (5). The transmission coefficient S21(f) is also represented in Figure 3c, for temperatures T ranging from -25°C to 175°C with a step of 50°C.…”

Section: Two Ports Delay Line Configurationmentioning

confidence: 96%

“…SAW sensors have many features that make them a favorable solution in various sensing applications [2], especially for environmental parameter measurement. Three configurations are mainly used as sensors: the one-port resonator, the two-port resonator [3,4], and the delay line [5,6]. A stack of semiconductor/piezoelectric/metal layers forms those devices where the top metal layer is patterned as IDTs (Inter Digital Transducers) and Bragg reflectors.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Comparative Study of Three SAW Configurations for Temperature Sensing

Serhane¹,

Belkhelfa²

2023

ETJ

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Section: Two Ports Delay Line Configurationmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Comparative Study of Three SAW Configurations for Temperature Sensing

Serhane¹,

Belkhelfa²

2023

ETJ

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“…The finite-element modeling of piezoelectric material is well explained in [17][18][19]. The relation between the stress, strain, electric field, and electric displacement field in a stress-charge of a piezoelectric crystal is given by the piezoelectric linear constructive equations.…”

Section: Finite-element Modelingmentioning

confidence: 99%

Finite-element analysis of scattering parameters of surface acoustic wave bandpass filter formed on barium titanate thin film

Timoshenko

Kalinchuk

Широков

2018

International Journal of Smart and Nano Materials

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The frequency dependence of scattering parameters of interdigital surface acoustic wave transducers placed on ferroelectric barium titanate (BaTiO 3 ) epitaxial film in c-phase coated over magnesium oxide has been studied using the finite-element method (FEM) approach along with the perfectly matched layer (PML) technique. The interdigital transducer which has a comb-like structure with aluminum electrodes excites the mechanical wave. The distance between the fingers allows tuning the frequency properties of the wave propagation. The magnesium oxide is taken as the substrate. The two-dimensional model of two-port surface acoustic wave filter is created to calculate scattering parameters and to show how to design the fixture in COMSOL TM . Some practical computational challenges of finite element modeling of SAW devices in COMSOL TM are shown. The effect of lattice misfit strain on acoustic properties of heterostructures of BaTiO 3 epitaxial film in c-phase at room temperature is discussed in present article for two lowfrequency surface acoustic resonances. ARTICLE HISTORY

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“…Considerable attention has been paid to modeling SAW's responses to understand the characteristics of surface acoustic waves generated in SAW devices. Using COMSOL Multiphysics, 2D finite element models of SAW sensors based on piezoelectric thin films of aluminum-nitride (AlN) or zinc-oxide (ZnO) [1] and of YZ Lithium Niobate [2] were developed. Other works were focused on modeling a 3D Love wave based SAW sensor when considering SiO2 [3] and ZnO [4] as guiding layers.…”

Section: Introductionmentioning

confidence: 99%

Novel Approach for Modeling an Ionic Imprinted Polymer Based SAW Sensor with COMSOL Multiphysics

et al. 2018

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Modeling a Surface Acoustic Wave (SAW) sensor response as a chemosensor and not only as just an electronic transducer was performed with COMSOL Multiphysics. For this study, the SAW's sensing area was functionalized with an ionic imprinted polymer (IIP), designed for the selective detection of lead ions. The idea consists in subdividing the IIP into elementary blocks whose physical properties can be modified separately. Three configurations have been envisaged: the IIP before and after lead ions extraction and the non-imprinted polymer (NIP). The generation of shear-horizontal waves on LiTaO 3 piezoelectric substrate is confirmed by recording the displacement amplitude versus time, according to the three space directions. The sensors sensitivity is estimated from the delays induced by the incorporation of the lead ions in the IIP layer. To the best of our knowledge, this approach has never been presented in the literature.

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Simplified Model for FEM Simulation of SAW Delay Line Sensor

Cited by 11 publications

References 9 publications

Comparative Study of Three SAW Configurations for Temperature Sensing

Comparative Study of Three SAW Configurations for Temperature Sensing

Finite-element analysis of scattering parameters of surface acoustic wave bandpass filter formed on barium titanate thin film

Novel Approach for Modeling an Ionic Imprinted Polymer Based SAW Sensor with COMSOL Multiphysics

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