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定义:纳米纤维包括直径小于100纳米通过分子有序聚集形成的纳米纤丝、及直径小于1微米通过电纺、海岛等途径制备的纳米纤维。制备:(1)纳米纤丝在自然界广泛存在。多糖(如纤维素、甲壳素)、蛋白质(如蚕丝、胶原)或两亲分子可形成纳米纤丝,如纤维素纳米晶须、甲壳素纳米晶须、蚕丝中以beta折叠为基础的纳米纤丝、以胶原蛋白alpha三螺丝为基础的纳米纤丝、以及淀粉样纳米纤丝等。纳米纤维形成的类似液晶的取向、周期性结构是天然生物材料力学性能、光学性能、生物学性能的结构学基础......
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在外部环境改变时,蛋白质的空间构型会发生变化,由可溶的天然态转变为不溶的纤维态,该过程被称为蛋白质的淀粉样纤维化(Amyloidosis)。[1-3] 蛋白质的淀粉样纤维化过程起始于蛋白分子的错误折叠,这些错误折叠首先生成寡聚体(oligomers),继而叠加形成原纤维(protofibrils)并最终自组装形成纤维或纤维聚集体(fibrils)。[4] 蛋白质的纤维化过程最早发现于某些疾病的病变组织中,是......
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充分利用海洋中蕴含丰富的离子,是海洋能源利用(如盐差发电与提取铀提锂)、国家洁净能源安全发展的战略需求。由于海洋中离子种类多、浓度低,海水能源离子在材料表面的特异性筛分与富集,是实现海水提铀提锂与盐差发电的核心步骤与关键问题。通过设计材料界面与微纳通道,构筑与解析生物及合成材料界面微环境对海洋离子的高通量选择性识别、传输与捕获的影响规律,建立海水能源离子的特异性筛分与富集理论。Encapsulating Amidoximated Nanofibrous Aero......
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将柔性材料与人工智能结合,构建类生命智能软体机器,在软质机器手臂、水下软体微机器、器管动态仿真与康复、智能可穿戴器件等方面都具有重要意义。而融合感知与致动功能的人造肌肉,是构建软质机器的关键基础材料,是实现其高高灵敏、多模态感知,与高速、大应力应变致动的关键。通过探究肌肉细胞协同单向致动的机制,揭示生物细胞/微生物集合体与柔性材料的耦合机制,发展“活”人造肌肉在电/光/磁作用下协同运动规律。发展电/光/磁活性软质材料的仿生构筑策略, 揭示软质材料多级结构对多模态刺激的感应与致动机制,建立电......
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扫码联系 李朝旭,中科院青岛生物能源与过程研究所、中科院大学、山东能源研究院研究员;仿生智能材料研究组组长;研究所学术委员会委员、学位委员会副主任;入选国家、中科院、省地多个人才计划,获山东省自然科学二等奖、全国商业联合会一等奖等。...
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李明杰 博士主要研究领域:生物基低维纳米材料材料、复合功能材料、仿生传感与驱动材料、环境纳米材料等邮箱:[email protected]电话:0532-80662738......
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Wearable energy storage with super mechanic flexibility, stretchability and safety has been in pursuit for smart flexible textiles. Fiber batteries, though having their superiority in spinnability, knittability and adaptability for breathable text......
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Biological nanofibrils not only are characteristic of many species of biomasses but also serve as a promising type of sustainable nanomaterials for various applications. However, their production has long relied on an invasive and energy-consuming......
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Stretchable ionic conductors are appealing for soft electronics, yet frequently had their conductivities limited below the level desired by many applications, and also lack the ability of simultaneously actuating and sensing their own motions, res......
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Extraction of aqueous uranium element for practical applications has drawn growing attention due to its significance for both green energy acquirement and ecological environment remediation. Herein, the liquid metal droplets produced by a facile u......
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Covalent organic frameworks (COFs) have recently shown great prospects for their photocatalytic applications in solar-to-hydrogen conversion. Nevertheless, most of the COFs were synthesized as crystalline bulk powders, impeding the exposure of sur......
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Despite the fact that close correlation has been established between the structures of covalent organic frameworks (COFs) and their photocatalytic properties, the effect of COF isomerism has been rarely studied so far due to the limited number of ......
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Two-Dimensionally Nano-Capsulating Liquid Metal for Self-Sintering and Self-Oscillating Bimorph Composites with Persistent Energy-Harvest Property, Advanced Functional Materials ,2023 Xinpeng Che, Ting Wang, Bailang Zhang, Zhuanzhuan Z......
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