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1. On calibration of piezoelectric sensors with laser doppler vibrometer

   https://doi.org/10.1121/10.0006445  

   Ghaffari, H. O.; Mok, U.; Pec, Matej (October 2021, The Journal of the Acoustical Society of America)
2. On the performance of PVDF based piezoelectric sensor with microstructures

   https://doi.org/10.1117/12.2658072  

   Srinivasaraghavan Govindarajan, Rishikesh; Stark, Taylor; Madiyar, Foram; Kim, Daewon (April 2023, SPIE)

   Su, Zhongqing; Limongelli, Maria Pina; Glisic, Branko (Ed.)

   This paper aims to investigate the performance of piezoelectric sensors with different shapes of 3D-printed microstructures. Based on the numerical analysis in the time-frequency domain, the microstructures are printed directly on the PVDF transparent film exhibiting higher piezoelectric coefficients using a high-resolution two-photon polymerization method. Bi-directional gold IDTs are fabricated by sputtering gold onto the substrate surface using a 3D-printed stencil. The mechanical properties of the film and surface morphology of printed microstructures are examined using a nanoindenter and a 3D profilometer. The change in frequency response due to the microstructure is measured using a network analyzer. This study will be a reference for developing an efficient wave-based gas sensor with enhanced sensitivity. 

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3. Thickness-Lamé Thin-Film Piezoelectric-on-Silicon Resonators

   https://doi.org/10.1109/JMEMS.2020.2972779  

   Shahraini, Sarah; Mansoorzare, Hakhamanesh; Mahigir, Amirreza; Abdolvand, Reza (June 2020, Journal of Microelectromechanical Systems)
4. ANTIBACTERIAL AGENTS BASED ON PHOTOCATALYTIC AND PIEZOELECTRIC NANOCOMPOSITES

   DuBois, Davida (March 2025, UCSC)
5. Audio Capture Using Piezoelectric Sensors on Vibrating Panel Surfaces

   DiPassio, Tre; Heilemann, Michael C.; Thompson, Benjamin; Bocko, Mark F. (May 2023, 154th Convention of the Audio Engineering Society)

   The microphone systems employed by smart devices such as cellphones and tablets require case penetrations that leave them vulnerable to environmental damage. A structural sensor mounted on the back of the display screen can be employed to record audio by capturing the bending vibration signals induced in the display panel by an incident acoustic wave - enabling a functional microphone on a fully sealed device. Distributed piezoelectric sensing elements and low-noise accelerometers were bonded to the surfaces of several different panels and used to record acoustic speech signals. The quality of the recorded signals was assessed using the speech transmission index, and the recordings were transcribed to text using an automatic speech recognition system. Although the quality of the speech signals recorded by the piezoelectric sensors was reduced compared to the quality of speech recorded by the accelerometers, the word-error-rate of each transcription increased only by approximately 2% on average, suggesting that distributed piezoelectric sensors can be used as a low-cost surface microphone for smart devices that employ automatic speech recognition. A method of crosstalk cancellation was also implemented to enable the simultaneous recording and playback of audio signals by an array of piezoelectric elements and evaluated by the measured improvement in the recording’s signal-to-interference ratio. 

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