The alignment of BCZT particles in PDMS boosts the sensitivity and cycling reliability of a flexible piezoelectric touch sensor

Gao, Xin; Zheng, Mupeng; Fu, Jing; Zhu, Mankang; Hou, Yudong

doi:10.1039/c8tc04741c

Cited by 73 publications

(45 citation statements)

References 41 publications

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“…[ 15a ] developed a biocompatible piezoelectric nanogenerator using (1‐ x )Ba(Zr 0.2 Ti 0.8 )O 3 ‐ x (Ba 0.7 Ca 0.3 )TiO 3 (BZT‐BCT) nanowires. BZT‐BCT was measured with a comparable piezoelectric coefficient (≈620 pC N ‐1 ) to that of many conventional PZTs (200–710 pC N ‐1 ), [ 15a,110 ] but with superior biocompatibility and biosafety.…”

Section: Synthesis and Modification Strategiesmentioning

confidence: 99%

Construction of Bio‐Piezoelectric Platforms: From Structures and Synthesis to Applications

et al. 2021

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Piezoelectric materials, with their unique ability for mechanical‐electrical energy conversion, have been widely applied in important fields such as sensing, energy harvesting, wastewater treatment, and catalysis. In recent years, advances in material synthesis and engineering have provided new opportunities for the development of bio‐piezoelectric materials with excellent biocompatibility and piezoelectric performance. Bio‐piezoelectric materials have attracted interdisciplinary research interest due to recent insights on the impact of piezoelectricity on biological systems and their versatile biomedical applications. This review therefore introduces the development of bio‐piezoelectric platforms from a broad perspective and highlights their design and engineering strategies. State‐of‐the‐art biomedical applications in both biosensing and disease treatment will be systematically outlined. The relationships between the properties, structure, and biomedical performance of the bio‐piezoelectric materials are examined to provide a deep understanding of the working mechanisms in a physiological environment. Finally, the development trends and challenges are discussed, with the aim to provide new insights for the design and construction of future bio‐piezoelectric materials.

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Section: Synthesis and Modification Strategiesmentioning

confidence: 99%

Construction of Bio‐Piezoelectric Platforms: From Structures and Synthesis to Applications

et al. 2021

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“…a) The piezoelectric charge coefficients ( d 33 ), b) relative dielectric constants (ε 33 ), and c) the piezoelectric voltage coefficients ( g 33 ) of both aligned and randomly distributed samples at different concentrations. d) Comparison of d 33 , ε r , and g 33 values of different types of piezoelectric materials (the values obtained in this study are denoted with red and blue stars): (i) ceramics, [ 57–61 ] (ii) PDMS‐based composites, [ 27,33,62–64 ] (iii) PVDF and PVDF‐TrFE based composites, [ 65–67 ] (iv) PVC‐based composites, [ 68 ] (v) epoxy‐based composites, [ 69 ] and (vi) polymers. [ 9,59,61,70 ] e) Power‐density output of both aligned and randomly distributed samples at different concentrations.…”

Section: Resultsmentioning

confidence: 99%

“…The novel piezoelectric material produced exhibited a record‐high piezoelectric voltage coefficient ( g 33 ) of 0.709 Vm N −1 , ≈20% greater than the highest g 33 value reported in the literature. [ 57–70 ] The piezoelectric and dielectric properties of both aligned and random samples were characterized at various different concentrations along with their light transmission and morphological characteristics. Moreover, the effects of graphitic particles on piezoelectric properties were also investigated by the alignment of small volume fraction of graphene nanoplatelets together with PZT particles.…”

Section: Resultsmentioning

confidence: 99%

Roll‐to‐Roll (R2R) Production of Large‐Area High‐Performance Piezoelectric Films Based on Vertically Aligned Nanocolumn Forests

Yildirim

Grant

Es‐haghi

et al. 2020

Adv Materials Technologies

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The recent advances in flexible piezoelectric technologies have sparked a great interest in developing multifunctional next‐generation transducers, which are in high demand for various challenging applications. Here, novel quasi 1–3 piezoelectric films with record‐high piezoelectric voltage coefficients (g33), reaching up to 0.709 Vm N−1, ≈20% greater than the recently reported highest g33 value in the literature, are reported. These composites are constructed via dielectrophoretic alignment of lead zirconate titanate (PZT) particles enhanced by graphene nanoplatelets, leading to densely structured cone‐shaped nanocolumn forests in the thickness direction. To demonstrate its potential applications, both structured and randomly dispersed samples are characterized and used in various applications ranging from energy harvesting to structural and personal health monitoring. Furthermore, when placed on the sensor surface, the oriented piezoelectric films are shown to detect even the slight movements of a small‐sized insect, demonstrating the ultrasensitivity of the system. Finally, to show the scalability of the dielectrophoretic process, a large area sample (12 ft long and 6‐in.‐wide) is also produced continuously via a novel multifunctional custom designed roll‐to‐roll manufacturing line. To the best of the knowledge, this is the largest single piece of piezoelectric film ever reported in the literature.

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“…This is due to the fact that the inter-particle distance between the filler particles is reduced, which increases poling efficiency, resulting in higher g 33 values at low volume fractions of fillers (~5-10%) [11]. Values of as high as 103 mV•m/N have been reported for various epoxy-based composites, which is much higher than the values reported for ceramics [12][13][14]. This proves DEP is an effective technique to manufacture piezoelectric composites that also helps to reduce material costs and implies a conservation of the flexibility and failure strain of the composites at a level close to that of the polymeric matrix.…”

Section: Introductionmentioning

confidence: 91%

Fabrication of Piezoelectric Composites Using High-Temperature Dielectrophoresis

Khaliq

Hoeks

Groen

2019

JMMP

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In this paper, we present a method to create a highly sensitive piezoelectric quasi 1–3 composite using a thermoplastic material filled with a piezoelectric powder. An up-scalable high-temperature dielectrophoresis (DEP) process is used to manufacture the quasi 1–3 piezoelectric polymer-ceramic composites. For this work, thermoplastic cyclic butylene terephthalate (CBT) is used as a polymer matrix and PZT (lead zirconium titanate) ceramic powder is chosen as the piezoelectric active filler material. At high temperatures, the polymer is melted to provide a liquid medium to align the piezoelectric particles using the DEP process inside the molten matrix. The resulting distribution of aligned particles is frozen upon cooling the composite down to room temperature in as little as 10 min. A maximum piezoelectric voltage sensitivity (g33) value of 54 ± 4 mV·m/N is reported for the composite with 10 vol% PZT, which is twice the value calculated for PZT based ceramics.

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The alignment of BCZT particles in PDMS boosts the sensitivity and cycling reliability of a flexible piezoelectric touch sensor

Abstract: With the rapid development of wearable devices, a highly sensitive flexible piezoelectric sensor shows tremendous potential for future demands.

Cited by 73 publications

References 41 publications

Construction of Bio‐Piezoelectric Platforms: From Structures and Synthesis to Applications

Construction of Bio‐Piezoelectric Platforms: From Structures and Synthesis to Applications

Roll‐to‐Roll (R2R) Production of Large‐Area High‐Performance Piezoelectric Films Based on Vertically Aligned Nanocolumn Forests

Fabrication of Piezoelectric Composites Using High-Temperature Dielectrophoresis

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