Transfer-Printed Wrinkled PVDF-Based Tactile Sensor-Nanogenerator Bundle for Hybrid Piezoelectric-Triboelectric Potential Generation
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
Triboelectric sensors are known for their ultrahigh sensitivity and wide-range detectability of tactile force/pressure, all while being self-powered. However, the energy harvesting efficiency of triboelectric nanogenerators (TENGs) is often limited by relatively low output power density, when compared to other state-of-the-art microgenerators. To address this challenge and achieve high force/pressure detection while maintaining excellent tactile resolution, a hybrid nanogenerator is proposed that comprises of both triboelectric and piezoelectric components within a ferroelectric polyvinylidene fluoride (PVDF) polymer matrix. To enhance tactile sensitivity, a coupled transfer printed-spin coating technique is introduced to imprint wrinkled silicone structuring with tunable periodicity and amplitude directly onto PVDF. The hybrid output voltage of the wrinkled PVDF-based TENG utilizing the ferroelectric β phase of PVDF (FE-TENG_5) shows an impressive ≈200% increase compared to pristine FE-TENG. The highest power density (0.9 mW cm−2) corresponds to FE-TENG with the periodicity of 5 µm. Remarkably, the imprinted FE-TENGs can detect even the slightest tactile force (<2 N), while the hybrid mechanism ensures a broad force sensing range, extending up to 100 N before saturation. This exceptional performance establishes the imprinted PVDF-based FE-TENG as a versatile tactile sensing platform for a range of cutting-edge applications, particularly in electronic skin and next-generation microelectronics.
Details
| Original language | English |
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| Article number | 2502767 |
| Journal | Small |
| Volume | 21 |
| Issue number | 26 |
| Publication status | Published - 3 Jul 2025 |
| Peer-reviewed | Yes |
External IDs
| PubMed | 40343397 |
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Keywords
ASJC Scopus subject areas
Keywords
- imprinted PVDF, piezoelectric-triboelectric hybrid potential, self-powered tactile sensor, transfer printing, triboelectric nanogenerator