Robust superhydrophobic wearable piezoelectric nanogenerators for self-powered body motion sensors

Su, Cuicui; Huang, X.; Zhang, Lingling; Zhang, Yuanzheng; Yu, Zhenhua; Chen, Caleb; Ye, Yumin; Guo, Shishang

doi:10.1016/j.nanoen.2022.108095

Cited by 67 publications

(33 citation statements)

References 66 publications

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“…6(b), Guo and colleagues reported a wearable piezoelectric nanogenerator sensor with superhydrophobic and antibacterial properties, achieved through encapsulation using initiated chemical vapor deposition (iCVD) technology. 67 This protective coating can safeguard the sensor against the adverse effects of high humidity, chemical exposure, and mechanical impacts, while also offering self-cleaning and superhydrophobic properties. Due to its outstanding long-term durability and stability, this piezoelectric nanogenerator sensor can be successfully integrated into insoles for monitoring human gait.…”

Section: Power Supply Methods For Wearable Microneedle Biosensorsmentioning

confidence: 99%

Recent advances of biosensors on microneedles

Ma,

Zhou,

Gao

2023

Anal. Methods

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Section: Power Supply Methods For Wearable Microneedle Biosensorsmentioning

confidence: 99%

Recent advances of biosensors on microneedles

Ma,

Zhou,

Gao

2023

Anal. Methods

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“…[253] Moreover, piezoelectric sensor applications are not restricted to detecting various human signals alone, but can also be utilized to analyze complex human movements, evaluate movements, or record motion trajectories. [254][255][256] For instance, Kong et al developed a dual-mode pressure sensor that combines piezoelectric and piezoresistive properties by tightly wrapping a PVDF piezoelectric film and a strain-sensitive gold-coated polyurethane film around a cylindrical elastomer. [257] The resulting sensor demonstrated an ultrahigh open-circuit voltage of over 250 V and excellent sensitivity of 530 mV kPa −1 .…”

Section: Piezoelectric Devices and Applicationsmentioning

confidence: 99%

Recent Progress on Structure Manipulation of Poly(vinylidene fluoride)‐Based Ferroelectric Polymers for Enhanced Piezoelectricity and Applications

Zhang

Zhu

et al. 2023

Adv Funct Materials

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Poly(vinylidene fluoride) (PVDF)‐based polymers demonstrate great potential for applications in flexible and wearable electronics but show low piezoelectric coefficients (e.g., −d33 < 30 pC N−1). The effective improvement for the piezoelectricity of PVDF is achieved by manipulating its semicrystalline structures. However, there is still a debate about which component is the primary contributor to piezoelectricity. Therefore, current methods to improve the piezoelectricity of PVDF can be classified into modulations of the amorphous phase, the crystalline region, and the crystalline–amorphous interface. Here, the basic principles and measurements of piezoelectric coefficients for soft polymers are first discussed. Then, three different categories of structural modulations are reviewed. In each category, the physical understanding and strategies to improve the piezoelectric performance of PVDF are discussed. In particular, the crucial role of the oriented amorphous fraction at the crystalline–amorphous interface in determining the piezoelectricity of PVDF is emphasized. At last, the future development of high performance piezoelectric polymers is outlooked.

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“…Initiated chemical vapor deposition (iCVD) is a mild polymer thin film fabrication method that allows in situ free radical polymerization on a substrate surface, achieving highly conformal nanoscale coatings with precise thickness control and excellent retention of surface microtopography. 28,29 Hydrogel nanocoatings have been synthesized using iCVD and successfully deposited on surfaces with micro-and nanostructures, such as fabrics, 30,31 microporous membranes, 32,33 and carbon nanotube forests, 34,35 without disrupting the original surface micro-and nanostructures. However, iCVD hydrogel thin films usually have a chemically crosslinked structure, which could limit their stretchability and affect their ion transportation ability, and therefore their conductivity.…”

Section: New Conceptsmentioning

confidence: 99%