Journal ArticleDOI
Biomaterial systems for mechanosensing and actuation
Peter Fratzl,Friedrich G. Barth +1 more
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TLDR
Analysis of natural structures on this basis can provide insight into evolutionary constraints on structure–function relationships in living organisms and the variety of structural solutions that emerged from these constraints.Abstract:
Living organisms use composite materials for various functions, such as mechanical support, protection, motility and the sensing of signals. Although the individual components of these materials may have poor mechanical qualities, they form composites of polymers and minerals with a remarkable variety of functional properties. Researchers are now using these natural systems as models for artificial mechanosensors and actuators, through studying both natural structures and their interactions with the environment. In addition to inspiring the design of new materials, analysis of natural structures on this basis can provide insight into evolutionary constraints on structure-function relationships in living organisms and the variety of structural solutions that emerged from these constraints.read more
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Ultrasensitive mechanical crack-based sensor inspired by the spider sensory system
Daeshik Kang,Peter V. Pikhitsa,Yong Whan Choi,Chanseok Lee,Sung Soo Shin,Linfeng Piao,Byeonghak Park,Kahp-Yang Suh,Tae Il Kim,Mansoo Choi +9 more
TL;DR: It is demonstrated that sensors based on nanoscale crack junctions and inspired by the geometry of a spider’s slit organ can attain ultrahigh sensitivity and serve multiple purposes, and that they are applicable to highly selective speech pattern recognition and the detection of physiological signals.
Journal ArticleDOI
Bio-Inspired Polymer Composite Actuator and Generator Driven by Water Gradients
TL;DR: In this article, a water-responsive polymer film was developed that can exchange water with the environment to induce film expansion and contraction, resulting in rapid and continuous locomotion, which can generate contractile stress up to 27 megapascals, lift objects 380 times heavier than itself, and transport cargo 10 times more than itself.
Journal ArticleDOI
Bio-inspired design of multiscale structures for function integration
Kesong Liu,Lei Jiang,Lei Jiang +2 more
TL;DR: In this paper, the authors focus on recent research progress in some typical biological materials (such as lotus leaves, rice leaves, butterfly wings, water strider legs, insect compound eyes, fish scales, red rose petals, brittlestars, spider silks, nacre, glass sponges, gecko feet, mussels, and others) and the corresponding bio-inspired multiscale materials possessing function integration.
Bio-Inspired Polymer Composite Actuator and Generator Driven by Water Gradients
TL;DR: Strong and flexible polymer films were developed that can exchange water with the environment to induce film expansion and contraction, resulting in rapid and continuous locomotion, and a generator is assembled by associating this actuator with a piezoelectric element.
Journal ArticleDOI
Nature-Inspired Structural Materials for Flexible Electronic Devices
TL;DR: This review covers the smart designs of structural materials inspired by natural materials and their utility in the construction of flexible devices, and summarizes structural materials that accommodate mechanical deformations, which is the fundamental requirement for flexible devices to work properly in complex environments.
References
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Nature’s hierarchical materials
Peter Fratzl,Richard Weinkamer +1 more
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Journal ArticleDOI
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Etienne Munch,Maximimilan E. Launey,Daan Hein Alsem,Daan Hein Alsem,Eduardo Saiz,Antoni P. Tomsia,Robert O. Ritchie,Robert O. Ritchie +7 more
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Journal Article
Tough, bio-inspired hybrid materials
TL;DR: This work emulates nature's toughening mechanisms by combining two ordinary compounds, aluminum oxide and polymethyl methacrylate, into ice-templated structures whose toughness can be more than 300 times that of their constituents.
Journal ArticleDOI
Self‐Healing Materials
TL;DR: In this article, the design and generic principles of self-healing materials through a wide range of different material classes including metals, ceramics, concrete, and polymers are discussed and evaluated.