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美国马里兰大学胡良兵、李腾:比钢还强且可完全降解的低成本高性能环保材料来源:高分子科学前沿| 在过去半个世纪里,塑料制品被大规模使用在人类生活的方方面面。过去60年里人类共生产了大约83亿吨塑料,其中约63亿吨已变成塑料垃圾。而这些塑料垃圾里只有9%被回收利用,其余的被直接填埋或倾倒,造成自然环境和资源的污染 ,影响范围之广令人震惊(包括在地球上最深的玛利亚那海峡底部已发现一次性塑料袋)。塑料最大的问题在于不易降解,绝大多数......
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北京大学于海峰团队:光、热、有机银离子响应性超分子有机凝胶来源:高分子科学前沿| 刺激响应材料因其动态可控的性能引起了人们的广泛关注,在传感器、制动器以及生物医药领域有诸多应用。其中多响应性的超分子有机凝胶是该领域的佼佼者,它们在应对外界刺激时,能够发生明显的相态转变而常被用......
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美国研制高介电、高导热、耐高温层状复合材料 模量超过11GPa!来源:高分子科学前沿|聚合物电介质材料由于其自身具有高的击穿强度、设计多样性、低密度和耐久性,因而在现代电子电气行业应用广泛。然而目前商用聚合物电介质材料仍存在工作温度过低、热稳定性不佳和力学性能不佳等问题。例如双向拉伸的聚丙烯薄膜(BOPP)的工作温度往往低于85 ℃,且材料的熔点,即使用上限温度为160 ℃。此外,商用电介质薄膜的杨氏模量往往低于3 GPa,导热系数......
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美国为液体金属纳米液滴穿上聚合物外衣 或可用于软体机器人来源:高分子科学前沿 |在室温下,共晶镓铟(EGaIn)是一种液态的金属合金。由于其良好的导热性、高介电常数、无限的可变形性以及金属导电性,EGaIn被广泛用于柔性电子和软体机器人的研究中,是柔性复合材料的重要组成部分。通常利用机械混合的方式将EGaIn微滴引入到聚合物弹性体中,以制造具有高热稳定性和导电性的可拉伸且强度高的柔性多功能复合材料。然而目前的机械共混方法......
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理化所制备出电学各向异性的柔性液态金属薄膜来源: 高分子科学前沿|文章来源:课题组约稿 针灸是一种传统的中医治疗方法,其中的针法是将毫针按照一定的角度插入人体特定深度的穴位,从而达到治疗疾病的目的。医生在行针的过程中,往往需要依赖自身经验及手法将针递送至特定的穴位,对于医生的技能要求很严格。客观化和精确化是中医现代化发展的趋势,发展针刺响应的超敏深度传......
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《先进功能材料》新型柔性抗菌材料:可自净、防污、智能释药来源:高分子科学前沿|细菌、真菌和病毒等病原微生物能引发机体组织病变,严重威胁着人类的身心健康。医疗器械在介入体内后,在其表面滋生细菌是引发感染的最主要原因,给病患带来重大的经济损失,甚至会危及生命安全。为了赋予材料表面抗菌性能,需要依据细菌感染发生机制,有针对性地进行抗菌表面的构建,其策略主要为抗细菌粘附策略、杀菌策略。 ...
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years now, scientists have marvelled at the insulating qualities of polar bear fur, suggesting that it cou......
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The promise of reusable sticky things, from Post-it Notes to Blu Tack, has never quite been fulfilled. They're just never quite as sticky the second time around, or the third. But now, a team of engineers from University of Penns......
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While shape-memory materials do have some interesting potential applications, many of them require the application of heat in order to change shape – and that could cause problems, in temperature-sensitive environments such as the human bod......
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Researchers at Washington State University have developed an environmentally friendly, plant-based material that for the first time works better than Styrofoam for insulation. Photo: WSU.Researchers at Washington State University (WSU) have develo......
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Electricity harvest from ubiquitous water has been endeavored, using nanogenerators based on carbon nanomaterials, to acquire renewable and clean energy and cope with fossil depletion and pollution as well. Meanwhile, though many biol......
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Bi-layer organization of dissimilar two-dimensional (2D) nanosheets has attracted great attention because of their unique physicochemical properties, fascinating functions, and potential applications in portable and wearable electronic devic......
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One-dimensional organic nanomaterials with a combination of electric conductivity, flexibility, and mechanical robustness are highly in demand in a variety of flexible electronic devices. Herein, conducting polymers were ......
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Humans can feel, weigh and grasp diverse objects, and simultaneously infer their material properties while applying the right amount of force—a challenging set of tasks for a modern robot1. Mechanoreceptor networks that p......
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Colonies of social insects are capable of self-organizing and accomplishing complex tasks through individual interactions. For example, to march across large gaps, ants grip the bodies of each other, forming a living br......
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Complexity in nature, whether in chlorophyll or in living organisms, often results from self-assembly and is considered particularly robust. Compact clusters of elemental particles can be shown to be of practic......
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Bovine serum albumin assembled into supramolecular fibrils and aligned into microtubes and nanosheets upon simply heating and cooling its solution in phosphate buffer under carefully-selected conditions. This unique “one-batch” synthesis was......
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In lightweight engineering, there is a constant quest for low‐density materials featuring high mass‐specific stiffness and strength. Additively‐manufactured metamaterials are particularly promising candidates as th......
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Lithographic nanofabrication is often limited to successive fabrication of two-dimensional (2D) layers. We present a strategy for the direct assembly of 3D nanomaterials consisting of metals, semiconductors, and biomolecules arranged ......
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From fuels, to foam mattresses, to high-performance carbon fibers, scientists are getting better all the time at capturing harmful CO2 and turning it into useful products. Researchers at Rutgers University have made......