ArticleSensors (Basel, Switzerland)2018
Enhanced Sensitivity of a Love Wave-Based Methane Gas Sensor Incorporating a Cryptophane-A Thin Film.
Article in Sensors (Basel, Switzerland), 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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7 citing papers in PubMed.
- Detection of Irregular Loads Using SAW Delay-Line Devices.Sensors (Basel, Switzerland) · 2026Article
- Real-time detection of acetone gas molecules at ppt levels in an air atmosphere using a partially suspended graphene surface acoustic wave skin gas sensor.Nanoscale advances · 2023Article
- Optimization of AIN Composite Structure Based Surface Acoustic Wave Device for Potential Sensing at Extremely High Temperature.Sensors (Basel, Switzerland) · 2020Article
- Effects of temperature and humidity on the performance of a PECH polymer coated SAW sensor.RSC advances · 2020Article
- Portable Low-Cost Electronic Nose Based on Surface Acoustic Wave Sensors for the Detection of BTX Vapors in Air.Sensors (Basel, Switzerland) · 2019Article
- A Three-Dimensional Finite Element Analysis Model for SH-SAW Torque Sensors.Sensors (Basel, Switzerland) · 2019Article
- Enhanced Sensitivity of a Hydrogen Sulfide Sensor Based on Surface Acoustic Waves at Room Temperature.Sensors (Basel, Switzerland) · 2018Article
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7 authors.
Funding
Abstract
A Love wave-based sensing chip incorporating a supramolecular cryptophane A (CrypA) thin film was proposed for methane gas sensing in this work. The waveguide effect in the structure of SiO₂/36° YX LiTaO₃ will confine the acoustic wave energy in SiO₂ thin-film, which contributes well to improvement of the mass loading sensitivity. The CrypA synthesized from vanillyl alcohol by a double trimerisation method was dropped onto the wave propagation path of the sensing device, and the adsorption to methane gas molecules by supramolecular interactions in CrypA modulates the acoustic wave propagation, and the corresponding frequency shifts were connected as the sensing signal. A theoretical analysis was performed to extract the coupling of modes for sensing devices simulation. Also, the temperature self-compensation of the Love wave devices was also achieved by using reverse polarity of the temperature coefficient in each media in the waveguide structure. The developed CrypA coated Love wave sensing device was connected into the differential oscillation loop, and the corresponding gas sensitive characterization was investigated. High sensitivity, fast response, and excellent temperature stability were successfully achieved.
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