Exploiting flow manipulation to engineer the electroactive phase for improved piezo response in size tunable PVDF microspheres via microfluidic technology

Rohal, Alisha; Garg, Romy; Choudhury, Samraggi; Manolata Devi, Mayanglambam; Jyoti Panda, Jiban; Pandey, Ambrish; Prakash, Bhanu

doi:10.1016/j.cej.2024.151986

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2024

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Cited by 2 publications

References 55 publications

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Microfluidics in smart food safety

Gong,

Lin

2024

Advances in Food and Nutrition Research

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Microfluidics in smart food safety

Gong,

Lin

2024

Advances in Food and Nutrition Research

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Design and Experimental Characterization of a Microfluidic Piezoelectric Pump Utilizing P(VDF-TrFE) Film

Zhao,

Li,

Shi

et al. 2024

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Advancements in wearable technology and lab-on-chip devices necessitate improved integrated microflow pumps with lower driving voltages. This study examines a piezoelectric pump using a flexible β-phase copolymer poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) film. Six samples (S1–S6) were fabricated and subjected to a three-step annealing process to optimize their properties. Characterization was conducted via atomic force microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, impedance analysis, and polarization hysteresis loop measurements. The results show that annealing at approximately 135 degrees Celsius produces a β-phase structure with uniform “rice grain”-like crystallites. A microfluidic pump with a nozzle/diffuser structure, using S4 film as the drive layer, was designed and manufactured. Diaphragm deformation and pump performance were assessed, showing a maximum water flow rate of 25 µL/min at 60 Hz with a peak-to-peak voltage (Vpp) of 60 V. The flow rate could be precisely controlled within 0–25 µL/min by adjusting the Vpp and frequency. This study effectively reduced the driving voltage of the piezoelectric pump, showing that it has significant implications for smart wearable devices.

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Exploiting flow manipulation to engineer the electroactive phase for improved piezo response in size tunable PVDF microspheres via microfluidic technology

Cited by 2 publications

References 55 publications

Microfluidics in smart food safety

Microfluidics in smart food safety

Design and Experimental Characterization of a Microfluidic Piezoelectric Pump Utilizing P(VDF-TrFE) Film

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