Three-dimensional printing of piezoelectric materials with designed anisotropy and directional response

Cui, Huachen; Hensleigh, Ryan; Yao, Desheng; Maurya, Deepam; Kumar, Prashant; Kang, Min Gyu; Priya, Shashank; Zheng, Xiaoyu

doi:10.1038/s41563-018-0268-1

Cited by 329 publications

(215 citation statements)

References 46 publications

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“…Humans may provide a large amount of mechanical energy during their daily living (the electric power may exceed 70 W), which can be converted to produce significant amounts of useful energy by triboelectric generation [40,41]. Many applications (e.g., innovative biomedical sensors that monitor daily activity and functioning of the organism and multifunctional medical devices) require biocompatible materials in contact with human skin or implanted inside the body [42][43][44]. Typically, the materials for biocompatible applications are those produced by nature or using natural products [45][46][47].…”

Section: Introductionmentioning

confidence: 99%

Natural and Eco-Friendly Materials for Triboelectric Energy Harvesting

et al. 2020

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Section: Introductionmentioning

confidence: 99%

Natural and Eco-Friendly Materials for Triboelectric Energy Harvesting

et al. 2020

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“…Currently, a large variety of thermoplastic materials can be extruded, ranging from acrylonitrile butadiene styrene (ABS) and polylactic acid (PLA) to technopolymers, like polyetherether ketone (Peek) or polytherimide (Ultem). Thanks to their superior mechanical properties, these thermoplastics can be used to produce also structurally functional components that, by virtue of the relatively low-cost of the technology, have been used for a wide spectrum of innovative technological applications ranging from acoustics and mechanics [45], [46], [47] to biomedicine and pharmaceutics [48], [49], from electronics [50], [52] to social applications [53], [54].…”

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confidence: 99%

A novel layered topology of auxetic materials based on the tetrachiral honeycomb microstructure

et al. 2019

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Microstructured honeycomb materials may exhibit exotic, extreme and tailorable mechanical properties, suited for innovative technological applications in a variety of modern engineering fields. The paper is focused on analysing the directional auxeticity of tetrachiral materials, through analytical, numerical and experimental methods. Theoretical predictions about the global elastic properties have been successfully validated by performing tensile laboratory tests on tetrachiral samples, realized with high precision 3D printing technologies. Inspired by the kinematic behaviour of the tetrachiral material, a newly-design bi-layered topology, referred to as bi-tetrachiral material, has been theoretically conceived and mechanically modelled. The novel topology virtuously exploits the mutual collaboration between two tetrachiral layers with opposite chiralities. The bi-tetrachiral material has been verified to outperform the tetrachiral material in terms of global Young modulus and, as major achievement, to exhibit a remarkable auxetic behaviour. Specifically, experimental results, confirmed by parametric analytical and computational analyses, have highlighted the effective possibility to attain strongly negative Poisson ratios, identified as a peculiar global elastic property of the novel bi-layered topology.

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“…Strategically designed, well‐defined 3D architectures could offer great opportunities, that are unavailable in their 2D counterparts, for a broad spectrum of applications, such as microelectronics, bioelectronics, photonics and optoelectronics, micro‐electromechanical systems, metamaterials, energy storage and harvesting, soft robotics, and many others. [ 1–22 ] Existing manufacturing techniques of 3D structures mainly include 3D printing, templated growth, fluidic self‐assembly, and mechanically guided 3D assembly. [ 1–22 ] Among these methods, the mechanically guided 3D assembly has recently attracted broad attention in the scientific community.…”

Section: Figurementioning

confidence: 99%

Laser‐Induced Graphene for Electrothermally Controlled, Mechanically Guided, 3D Assembly and Human–Soft Actuators Interaction

et al. 2020

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Strategically designed, well-defined 3D architectures could offer great opportunities, that are unavailable in their 2D counterparts, for a broad spectrum of applications, such as microelectronics, bioelectronics, photonics and optoelectronics, micro-electromechanical systems, metamaterials, energy storage and harvesting, soft robotics, and many others. Existing manufacturing techniques of 3D structures mainly include 3D printing, templated growth, fluidic self-assembly, and mechanically guided 3D assembly. Among these methods, the mechanically guided 3D assembly has recently attracted broad attention in the scientific community. The process starts from the planar fabrication of patterned 2D precursor structures, followed by the 2D-to-3D shape transformation via controlled rolling, folding, curving, and/ or buckling. [4] This process is naturally compatible with existing advanced planar fabrication technologies (e.g., lithographic and laser-processing techniques). Consequently, micro/nanoscale structures, sensors and/or other functional components Mechanically guided, 3D assembly has attracted broad interests, owing to its compatibility with planar fabrication techniques and applicability to a diversity of geometries and length scales. Its further development requires the capability of on-demand reversible shape reconfigurations, desirable for many emerging applications (e.g., responsive metamaterials, soft robotics). Here, the design, fabrication, and modeling of soft electrothermal actuators based on laser-induced graphene (LIG) are reported and their applications in mechanically guided 3D assembly and human-soft actuators interaction are explored. Over 20 complex 3D architectures are fabricated, including reconfigurable structures that can reshape among three distinct geometries. Also, the structures capable of maintaining 3D shapes at room temperature without the need for any actuation are realized by fabricating LIG actuators at an elevated temperature. Finite element analysis can quantitatively capture key aspects that govern electrothermally controlled shape transformations, thereby providing a reliable tool for rapid design optimization. Furthermore, their applications are explored in human-soft actuators interaction, including elastic metamaterials with human gesture-controlled bandgap behaviors and soft robotic fingers which can measure electrocardiogram from humans in an on-demand fashion. Other demonstrations include artificial muscles, which can lift masses that are about 110 times of their weights and biomimetic frog tongues which can prey insects.

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Three-dimensional printing of piezoelectric materials with designed anisotropy and directional response

Cited by 329 publications

References 46 publications

Natural and Eco-Friendly Materials for Triboelectric Energy Harvesting

Natural and Eco-Friendly Materials for Triboelectric Energy Harvesting

A novel layered topology of auxetic materials based on the tetrachiral honeycomb microstructure

Laser‐Induced Graphene for Electrothermally Controlled, Mechanically Guided, 3D Assembly and Human–Soft Actuators Interaction

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