Investigation into effect of coupled resonance phenomenon towards sensitivity enhancement of SAW conductivity sensors integrated with ZnO nanorods

Mohanan, Ajay Achath; Ramakrishnan, N.

doi:10.1007/s00542-020-04766-0

Cited by 3 publications

(1 citation statement)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Note that the SH-SAW sensor sensitivity is affected not only by AuNPs but also by the annealing temperature, − quenching, and the propagation structure of the SH-SAW sensor. − Similar to the SH-SAW sensor sensitivity, the LSPR sensor sensitivity is also affected by the size, distance, and structure of the nanoparticle and its interaction with the medium. − In addition, the simulation of AuNPs with different radii is shown in Figure S4(a) for the air medium and Figure S4(b) for the EtOH liquid, Figure S4(c) shows the σ abs values, and Figure S4(d) shows the sensitivity effect. Simulation of the dimer AuNPs with different distances is shown in Figure S4(e) for air and Figure S4(f) for the EtOH liquid, Figure S4(g) shows the σ abs values, and Figure S4(h) shows the sensitivity effect.…”

Section: Results and Discussionmentioning

confidence: 96%

Multifunctional and Sensitivity Enhancement of Hybrid Acoustoplasmonic Sensors Fabricated on 36XY-LiTaO₃ with Gold Nanoparticles for the Detection of Permittivity, Conductivity, and the Refractive Index

Wibisono

Rahardjo

Kondoh

2021

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Integration of high-sensitivity sensors with multiple sensing performance for the environmental detection of permittivity (ε r ), conductivity (σ), and the refractive index (n) is required to support Societies 5.0. However, there are still many sensors with low sensitivity that stand alone. A shear-horizontal surface acoustic wave (SH-SAW) sensor is usually used because of its high-sensitivity performance in detecting electrical properties. Moreover, localized surface plasmon resonance (LSPR) sensors show remarkable optical side capability. Here, we have successfully combined these advantages with an additional benefit of sensitivity enhancement. We propose a hybrid acoustoplasmonic sensor generated by integrating SH-SAW and LSPR devices to simultaneously detect ε r , σ, and n. The SH-SAW sensor was fabricated on a 36XY-LiTaO3 substrate using a developed interdigital transducer. Then, the LSPR sensor was implemented by the deposition of gold nanoparticles (AuNPs) on the propagation surfaces of the SH-SAW sensor. Fascinatingly, the AuNPs not only generate the LSPR effect but also enhance the SH-SAW sensor sensitivity. Comprehensive investigations were performed with atomic force microscopy imaging, CST software used for plasmonic E-field simulation, and hybrid sensing evaluation. Moreover, the SH-SAW sensitivity enhancement achieved using AuNPs was verified by frequency-domain and time-domain measurements. Thus, the SH-SAW sensor with AuNPs has a wide ε r detection range (25–85), sensing capabilities for ultrasmall σ (0.00528–0.02504 S/m), and high sensitivity for n detection (45.5–201.9 nm/RIU). The cross-sectional effects were also evaluated. The effect of the LSPR device on the SH-SAW device was examined by turning the light OFF or ON (hereafter OFF/ON). The impact of the SH-SAW device on the LSPR device was investigated by turning the sine signal OFF/ON. We found that the SH-SAW sensor was not impacted by light. Interestingly, the presence of the SH-SAW sensor affects the positions of the AuNPs, which consistently generates a small blueshift in the LSPR effect. However, insignificant variation was noted in independent performances. In general, the SH-SAW sensor with AuNPs shows multifunctional independent characteristics and high-sensitivity performance, making it suitable for a chemical environment, with the possibility of integration with a wireless network.

show abstract

Section: Results and Discussionmentioning

confidence: 96%

Multifunctional and Sensitivity Enhancement of Hybrid Acoustoplasmonic Sensors Fabricated on 36XY-LiTaO₃ with Gold Nanoparticles for the Detection of Permittivity, Conductivity, and the Refractive Index

Wibisono

Rahardjo

Kondoh

2021

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

Advancements in One-Port Surface Acoustic Wave (SAW) Resonators for Sensing Applications: A Review

Kent,

Ramakrishnan,

Pratama Kesuma

2024

IEEE Sensors J.

View full text Add to dashboard Cite

Mass Loading Characteristics of One-Port SAW Resonator With Sensing Film Attached Reflector Electrodes

Kesuma,

Wang,

Mohanan

et al. 2023

IEEE Sens. Lett.

View full text Add to dashboard Cite

Investigation into effect of coupled resonance phenomenon towards sensitivity enhancement of SAW conductivity sensors integrated with ZnO nanorods

Cited by 3 publications

References 35 publications

Multifunctional and Sensitivity Enhancement of Hybrid Acoustoplasmonic Sensors Fabricated on 36XY-LiTaO₃ with Gold Nanoparticles for the Detection of Permittivity, Conductivity, and the Refractive Index

Multifunctional and Sensitivity Enhancement of Hybrid Acoustoplasmonic Sensors Fabricated on 36XY-LiTaO₃ with Gold Nanoparticles for the Detection of Permittivity, Conductivity, and the Refractive Index

Advancements in One-Port Surface Acoustic Wave (SAW) Resonators for Sensing Applications: A Review

Mass Loading Characteristics of One-Port SAW Resonator With Sensing Film Attached Reflector Electrodes

Contact Info

Product

Resources

About

Investigation into effect of coupled resonance phenomenon towards sensitivity enhancement of SAW conductivity sensors integrated with ZnO nanorods

Cited by 3 publications

References 35 publications

Multifunctional and Sensitivity Enhancement of Hybrid Acoustoplasmonic Sensors Fabricated on 36XY-LiTaO3 with Gold Nanoparticles for the Detection of Permittivity, Conductivity, and the Refractive Index

Multifunctional and Sensitivity Enhancement of Hybrid Acoustoplasmonic Sensors Fabricated on 36XY-LiTaO3 with Gold Nanoparticles for the Detection of Permittivity, Conductivity, and the Refractive Index

Advancements in One-Port Surface Acoustic Wave (SAW) Resonators for Sensing Applications: A Review

Mass Loading Characteristics of One-Port SAW Resonator With Sensing Film Attached Reflector Electrodes

Contact Info

Product

Resources

About

Multifunctional and Sensitivity Enhancement of Hybrid Acoustoplasmonic Sensors Fabricated on 36XY-LiTaO₃ with Gold Nanoparticles for the Detection of Permittivity, Conductivity, and the Refractive Index

Multifunctional and Sensitivity Enhancement of Hybrid Acoustoplasmonic Sensors Fabricated on 36XY-LiTaO₃ with Gold Nanoparticles for the Detection of Permittivity, Conductivity, and the Refractive Index