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自驱动柔性液态金属车辆之间的自主融合与分离 被引量:10
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作者 张洁 姚又友 刘静 《科学通报》 EI CAS CSCD 北大核心 2015年第17期1648-1648,共1页
传统由刚性材料制成的运动机器,甚至是自然界中的生物体,一般均不具备自动融合或分离的能力.可自动组装的机器,一般需在设计机器时就将其加以模块化.一旦需要执行各模块间的组装合并时,往往需借助人为手动实现拼接;而要将大块机器分散... 传统由刚性材料制成的运动机器,甚至是自然界中的生物体,一般均不具备自动融合或分离的能力.可自动组装的机器,一般需在设计机器时就将其加以模块化.一旦需要执行各模块间的组装合并时,往往需借助人为手动实现拼接;而要将大块机器分散为独立的小机器运行时,则需要对每个模块单独提供动力,以确保其运动功能.无疑,这样的系统会显得复杂且不够自主.可自动组装并能随意变形的机器会为此提供新的关键突破口.此前,我们曾报道了利用柔性液态金属材料与铝的相互作用,实现液态金属的自驱动,其可随环境变化调整自身形状,这种独特性能促成研究液态金属机器的自组装重构问题. 展开更多
关键词 液态金属 自驱动 分离 柔性 机器运行 车辆 运动功能 自组装
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Autonomous convergence and divergence of the self-powered soft liquid metal vehicles
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作者 张洁 姚又友 刘静 《Science Bulletin》 SCIE EI CAS CSCD 2015年第10期943-951,I0007,共10页
Conventional rigid machines, even biological systems in nature, generally do not own the capabilities like autonomous convergence or divergence. Here, such extraordinary behavior was demonstrated for the first time wi... Conventional rigid machines, even biological systems in nature, generally do not own the capabilities like autonomous convergence or divergence. Here, such extraordinary behavior was demonstrated for the first time with the liquid metal vehicle. This synthetic soft machine fueled with an aluminum flake could initiate its autonomous locomotion in an opentop circular channel containing NaOH solution, like a running vehicle. If cutting a large machine into several smaller separately running vehicles, each of them still resumes its traveling state along the original track and chases each other. If the volumes of such dispersive vehicles were close to each other and they were all squeezed in the channel, the vehicles would move syn-chronously with oscillation. Otherwise, such self-motion would become desynchronized with interval between the inequable vehicles decreased gradually. If their volumes were significantly different, and the smaller vehicles were not squeezed in the channel, the faster vehicle would overtake the slower ones, until they finally coalesced seamlessly. The assembled vehicle could deform itself along with change of its velocity. This finding may shedlight on future researches on smart material, fluid mechanics and soft matter to self-fueled machine and biomimics. It would also offer opportunities for constructing self-reconfigurable soft robots. 展开更多
关键词 Liquid metal Self-fueled machine Soft robot Autonomous convergence and divergence Soft matter
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