Journal ArticleDOI
Stimuli-Responsive Polymer Nanocomposites Inspired by the Sea Cucumber Dermis
Jeffrey R. Capadona,Kadhiravan Shanmuganathan,Dustin J. Tyler,Stuart J. Rowan,Christoph Weder +4 more
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TLDR
A family of polymer nanocomposites are reported on, which mimic this architecture and display similar chemoresponsive mechanic adaptability and larger modulus changes upon exposure to emulated physiological conditions.Abstract:
Sea cucumbers, like other echinoderms, have the ability to rapidly and reversibly alter the stiffness of their inner dermis. It has been proposed that the modulus of this tissue is controlled by regulating the interactions among collagen fibrils, which reinforce a low-modulus matrix. We report on a family of polymer nanocomposites, which mimic this architecture and display similar chemoresponsive mechanic adaptability. Materials based on a rubbery host polymer and rigid cellulose nanofibers exhibit a reversible reduction by a factor of 40 of the tensile modulus, for example, from 800 to 20 megapascals (MPa), upon exposure to a chemical regulator that mediates nanofiber interactions. Using a host polymer with a thermal transition in the regime of interest, we demonstrated even larger modulus changes (4200 to 1.6 MPa) upon exposure to emulated physiological conditions.read more
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Cellulose nanomaterials review: structure, properties and nanocomposites
Robert J. Moon,Robert J. Moon,Ashlie Martini,John A. Nairn,John Simonsen,Jeffrey P. Youngblood +5 more
TL;DR: This critical review provides a processing-structure-property perspective on recent advances in cellulose nanoparticles and composites produced from them, and summarizes cellulOSE nanoparticles in terms of particle morphology, crystal structure, and properties.
Journal ArticleDOI
Cellulose nanocrystals: chemistry, self-assembly, and applications.
TL;DR: Dr. Youssef Habibi’s research interests include the sustainable production of materials from biomass, development of high performance nanocomposites from lignocellulosic materials, biomass conversion technologies, and the application of novel analytical tools in biomass research.
Journal ArticleDOI
Review: current international research into cellulose nanofibres and nanocomposites
Stephen J. Eichhorn,Alain Dufresne,Mirta Ines Aranguren,Norma Esther Marcovich,Jeffrey B. Capadona,Stuart J. Rowan,Christoph Weder,Wim Thielemans,Maren Roman,Scott Renneckar,Wolfgang Gindl,Stefan Veigel,Jozef Keckes,Hiroyuki Yano,Kentaro Abe,Masaya Nogi,Antonio Norio Nakagaito,A. Mangalam,John Simonsen,A. S. Benight,Alexander Bismarck,Lars Berglund,Ton Peijs +22 more
TL;DR: An overview of recent progress in the area of cellulose nanofibre-based nanocomposites is given in this article, with particular emphasis on applications, such as reinforced adhesives, to make optically transparent paper for electronic displays, to create DNA-hybrid materials, to generate hierarchical composites and for use in foams, aerogels and starch nanocom composites.
Journal ArticleDOI
Molecular-channel driven actuator with considerations for multiple configurations and color switching.
Jiuke Mu,Gang Wang,Hongping Yan,Huayu Li,Xuemin Wang,Enlai Gao,Hou Chengyi,Anh Thi Cam Pham,Lianjun Wu,Qinghong Zhang,Yaogang Li,Zhi Ping Xu,Yang Guo,Elsa Reichmanis,Hongzhi Wang,Meifang Zhu +15 more
TL;DR: An ambient-driven actuator that takes advantage of inherent nanoscale molecular channels within a commercial perfluorosulfonic acid ionomer (PFSA) film, fabricated by simple solution processing to realize a rapid response, self-adaptive, and exceptionally stable actuation.
Journal ArticleDOI
Future perspectives and recent advances in stimuli-responsive materials
TL;DR: It is the goal to emphasize underutilized adaptive behaviors of stimuli-responsive polymers so that novel applications and new generations of smart materials can be realized.
References
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Journal ArticleDOI
Review of Recent Research into Cellulosic Whiskers, Their Properties and Their Application in Nanocomposite Field
TL;DR: There are numerous examples where animals or plants synthesize extracellular high-performance skeletal biocomposites consisting of a matrix reinforced by fibrous biopolymers, which occur as whisker-like microfibrils that are biosynthesized and deposited in a continuous fashion.
PatentDOI
Direct cortical control of 3d neuroprosthetic devices
TL;DR: In this paper, a co-adaptive algorithm uses the firing rate of the sensed neurons or neuron groupings to help develop the control signals for an object is developed from the neuron-originating electrical impulses detected by electrode arrays implanted in a subject's cerebral cortex at the pre-motor locations known to have association with arm movements.
Journal ArticleDOI
Elastic modulus and stress-transfer properties of tunicate cellulose whiskers.
TL;DR: Measurements of the elastic modulus of tunicate cellulose using a Raman spectroscopic technique show that the tunicate sample is a two-dimensional in-plane random network of fibers, and the modulus is very high, at about 143 GPa.
Journal ArticleDOI
Rodlike Cellulose Microcrystals: Structure, Properties, and Applications
TL;DR: Rod-shaped cellulose microcrystals can be obtained from different cellulose sources such as wood, cotton, or animal origin this article, and their properties are discussed in this contribution.
Journal ArticleDOI
Brain responses to micro-machined silicon devices.
Donald H. Szarowski,M. D. Andersen,Scott T. Retterer,Andrew J. Spence,Michael Isaacson,Harold G. Craighead,James N. Turner,James N. Turner,William Shain,William Shain +9 more
TL;DR: Data indicate that device insertion promotes an early response proportional to device size and a sustained response that is independent of device size, geometry, and surface roughness, which may be associated with the amount of damage generated during insertion.
Related Papers (5)
Cellulose nanocrystals: chemistry, self-assembly, and applications.
Review: current international research into cellulose nanofibres and nanocomposites
Stephen J. Eichhorn,Alain Dufresne,Mirta Ines Aranguren,Norma Esther Marcovich,Jeffrey B. Capadona,Stuart J. Rowan,Christoph Weder,Wim Thielemans,Maren Roman,Scott Renneckar,Wolfgang Gindl,Stefan Veigel,Jozef Keckes,Hiroyuki Yano,Kentaro Abe,Masaya Nogi,Antonio Norio Nakagaito,A. Mangalam,John Simonsen,A. S. Benight,Alexander Bismarck,Lars Berglund,Ton Peijs +22 more