Journal ArticleDOI
Piezoelectric actuation of direct-write electrospun fibers
TLDR
In this paper, a double-electrode approach has been used to minimize the electrostatic effect in fiber-based actuators, and an average piezoelectric coefficient d33 of −57.6 pm/V has been characterized from fabricated fibers and this value is about twice larger than the value reported in PVDF thin-films.Abstract:
Piezoelectric actuation of doubly clamped, electrospun poly (vinylidene fluoride) (PVDF) fibers fabricated by a direct-write process has been demonstrated. Near-field electrospinning (NFES) has been utilized to fabricate PVDF fibers with good piezoelectric properties by means of the in situ electrical poling and mechanical stretching process. Experimentally, PVDF fibers have responded to both piezoelectric and electrostatic effects and a double-electrode approach has been used to minimize the electrostatic effect. An average piezoelectric coefficient d33 of −57.6 pm/V has been characterized from fabricated fibers and this value is about twice larger than the value reported in PVDF thin-films. Various complex patterns of PVDF fibers have been deposited using NFES, enabling possible array formats for fiber-based actuators with possible applications including artificial muscles and switches.read more
Citations
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Advances in three-dimensional nanofibrous macrostructures via electrospinning
TL;DR: In this paper, the authors summarized and reviewed recent advances in various promising and cutting-edge electrospinning techniques, including multilayering electro-spinning, post-processing after electro spinning, liquid-assisted collection, template assisted collection, porogen-added electro-spinning, and self-assembly.
Journal ArticleDOI
Significance of Nanomaterials in Wearables: A Review on Wearable Actuators and Sensors.
W.A.D.M. Jayathilaka,Kun Qi,Kun Qi,Yanli Qin,Yanli Qin,Amutha Chinnappan,William Serrano-Garcia,William Serrano-Garcia,Chinnappan Baskar,Hongbo Wang,Jianxin He,Shizhong Cui,Sylvia Thomas,Seeram Ramakrishna +13 more
TL;DR: This review looks into the contribution of nanomaterials and nanocomposites to wearable technology with a focus on wearable sensors and actuators.
Journal ArticleDOI
Multiscale-structuring of polyvinylidene fluoride for energy harvesting: the impact of molecular-, micro- and macro-structure
TL;DR: In this paper, a review focusing on flexible energy harvesting system based on polyvinylidene fluoride based polymers, with an emphasis on manipulating and optimising the properties and performance of the polymeric materials and related nanocomposites through structuring the material at multiple scales.
Journal ArticleDOI
Recent advances in large-scale assembly of semiconducting inorganic nanowires and nanofibers for electronics, sensors and photovoltaics.
TL;DR: This review aims to present recent progress toward nanowire device assembly technologies, including flow-assisted alignment, Langmuir-Blodgett assembly, bubble-blown technique, electric/magnetic- field-directed assembly, contact/roll printing, planar growth, bridging method, and electrospinning, etc.
Journal ArticleDOI
Three-dimensional printing of piezoelectric materials with designed anisotropy and directional response.
Huachen Cui,Ryan Hensleigh,Desheng Yao,Deepam Maurya,Prashant Kumar,Min Gyu Kang,Shashank Priya,Shashank Priya,Xiaoyu Rayne Zheng +8 more
TL;DR: This strategy may be applied to create the next generation of intelligent infrastructure, able to perform a variety of structural and functional tasks, including simultaneous impact absorption and monitoring, three-dimensional pressure mapping and directionality detection.
References
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Journal ArticleDOI
Bending instability of electrically charged liquid jets of polymer solutions in electrospinning
TL;DR: In this paper, the authors analyzed and explained the reasons for the instability of a viscous jet of polymer solution at a pendent droplet, showing that the longitudinal stress caused by the external electric field acting on the charge carried by the jet stabilized the straight jet for some distance.
Journal ArticleDOI
Direct-Write Piezoelectric Polymeric Nanogenerator with High Energy Conversion Efficiency
TL;DR: Near-field electrospinning is used to direct-write poly(vinylidene fluoride) nanofibers with in situ mechanical stretch and electrical poling characteristics to produce piezoelectric properties, rendering them potentially advantageous for sensing and actuation applications.
Journal ArticleDOI
Energy scavenging with shoe-mounted piezoelectrics
N.S. Shenck,Joseph A. Paradiso +1 more
TL;DR: In this article, a flexible piezoelectric foil stave was used to harness sole-bending energy and a reinforced PZT dimorph to capture heel-strike energy.
Journal ArticleDOI
Near-field electrospinning.
TL;DR: A near-field electrospinning process has been developed to deposit solid nanofibers in a direct, continuous, and controllable manner and is a potential tool in direct write nanofabrication for a variety of materials.