Publication

1. Journal papers

Dinu, L.A.; Buiculescu, V.; Baracu, A.M. Recent Progress on Nanomaterials for NO2 Surface Acoustic Wave Sensors. Nanomaterials 2022, 12, 2120. https://doi.org/10.3390/nano12122120

Abstract: NO2 gas surface acoustic wave (SAW) sensors are under continuous development due to their high sensitivity, reliability, low cost and room temperature operation. Their integration ability with different receptor nanomaterials assures a boost in the performance of the sensors. Among the most exploited nano-materials for sensitive detection of NO2 gas molecules are carbon-based. nanomaterials, metal oxide semiconductors, quantum dots, and conducting polymers. All these nanomaterials aim to create pores for NO2 gas adsorption or to enlarge the specific surface area with ultra-small nanoparticles that increase the active sites where NO2 gas molecules can diffuse. This review provides a general overview of NO2 gas SAW sensors, with a focus on the different sensors. configurations and their fabrication technology, on the nanomaterials used as sensitive NO2 layers and on the test methods for gas detection. The synthesis methods of sensing nanomaterials, their functionalization techniques, the mechanism of interaction between NO2 molecules and the sensing nanomaterials are presented and discussed.

2. Conference papers
V. Buiculescu, A. Baracu, C. Buiculescu, “Capacitive IDT sensors integrated in SIW structures – A proof of concept”, 23rd European Microelectronics and Packaging Conference and Exhibition (EMPC 2021), 13-16 Sept. 2021, Gothenburg (Göteborg), Sweden, https://doi.org/10.23919/EMPC53418.2021.9584960
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V. Buiculescu, A. Baracu, C. Buiculescu, “Layout-based tuning solution for reconfigurable SIW resonant sensors”, 9th Electronics System-Integration Technology Conference – ESTC 2022, 13-16 Sept. 2022, Sibiu, Romania
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3. Pending patents

V. Buiculescu, A.M. Baracu, “Configurations and methods for tuning the resonance frequency of the substrate integrated waveguide resonant circuits”, pending patent A00679, 12 November 2021
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V. Buiculescu, S. Iordănescu, “Method and devices for detachable assembly of electromagnetically coupled substrate integrated guide circuits”, pending patent A00659, 20 October 2022
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4. Achievements
Resonant sensor for measuring light intensity
Multi-layer tunable resonant structure
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