Pulsated in-Situ Dried Electrostretching Fabrication of Microneedles for Transdermal Drug Delivery

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Mai, Ngoc Luan
Van Anh Hoang, Thi
Vu, Trung-Hieu
Vu, Hoai-Duc
Doan, Canh
Yong, Yuen
Dinh, Thien Xuan
Dao, Dzung
Dau, Van Thanh
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2025
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Orlando, United States

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Abstract

This paper reports a pioneering technique to fabricate microneedles (MNs) for transdermal drug delivery utilizing pulsated in-situ dried electrostretching (PIDES). This approach applies pulsed voltage to generate electrohydrodynamic forces that stretch and solidify a polymer droplet into a conical shape with a micrometer-scale tip. As the solvent evaporates, the polymer droplet is stretched in-situ into a cone and hardens, forming a sharp MN ideal for transdermal drug delivery. Penetration and mechanical tests confirm that the MNS have the necessary sharpness and strength for effective skin penetration. Furthermore, curcumin loading and a release test show that the MNS can effectively carry drugs and provide a gradual release of drug. These results demonstrate that PIDES is a promising, cost-effective, and straightforward method for developing efficient and painless transdermal drug delivery systems.

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2025 23rd International Conference on Solid-State Sensors, Actuators and Microsystems (Transducers)

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Nanobiotechnology

Pharmaceutical delivery technologies

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Mai, NL; Van Anh Hoang, T; Vu, T-H; Vu, H-D; Doan, C; Yong, Y; Dinh, TX; Dao, D; Dau, VT, Pulsated in-Situ Dried Electrostretching Fabrication of Microneedles for Transdermal Drug Delivery, 2025 23rd International Conference on Solid-State Sensors, Actuators and Microsystems (Transducers), 2025, pp. 550-553