Li Weifeng, Jayasinghe Chaminda, Shanov Vesselin, Schulz Mark
Nanoworld Laboratories, University of Cincinnati, Cincinnati, OH 45221-0072, USA.
Materials (Basel). 2011 Aug 29;4(9):1519-1527. doi: 10.3390/ma4091519.
Nanothread with a diameter as small as one hundred nanometers was manufactured under a scanning electron microscope. Made directly from carbon nanotubes, and inheriting their superior electrical and mechanical properties, nanothread may be the world's smallest man-made fiber. The smallest thread that can be spun using a bench-top spinning machine is about 5 microns in diameter. Nanothread is a new material building block that can be used at the nanoscale or plied to form yarn for applications at the micro and macro scales. Preliminary electrical and mechanical properties of nanothread were measured. The resistivity of nanothread is less than 10 Ω∙m. The strength of nanothread is greater than 0.5 GPa. This strength was obtained from measurements using special glue that cures in an electron microscope. The glue weakened the thread, thus further work is needed to obtain more accurate measurements. Nanothread will have broad applications in enabling electrical components, circuits, sensors, and tiny machines. Yarn can be used for various macroscale applications including lightweight antennas, composites, and cables.
一种直径小至100纳米的纳米线是在扫描电子显微镜下制造出来的。纳米线直接由碳纳米管制成，继承了碳纳米管卓越的电学和力学性能，可能是世界上最小的人造纤维。使用台式纺纱机能够纺出的最细纱线直径约为5微米。纳米线是一种新型材料组件，可用于纳米尺度，也可捻合形成纱线，用于微米和宏观尺度的应用。已对纳米线的初步电学和力学性能进行了测量。纳米线的电阻率小于10Ω∙m。纳米线的强度大于0.5GPa。该强度是通过在电子显微镜中使用固化的特殊胶水进行测量得到的。胶水使线变弱，因此需要进一步开展工作以获得更准确的测量结果。纳米线在实现电子元件、电路、传感器和微型机器方面将有广泛应用。纱线可用于各种宏观尺度的应用，包括轻型天线、复合材料和电缆。
