碳纳米管
Also known as CNT, carbon nanotubes, nanotubes, carbon
allotropes of carbon with a cylindrical nanostructure
AI overview
A carbon nanotube is a microscopic tube made of carbon atoms arranged in a cylindrical shape, representing one of the different structural forms that pure carbon can take. These nanotubes are of scientific and practical interest because their unique structure gives them distinctive physical and chemical properties that could potentially be useful in various applications.
AI-generated from the Wikipedia summary — may contain errors.
Research
47,884 papers- Carbon Nanotube (CNT)-Based Biosensors.ReviewBiosensors · 2021Ferrier DC, Honeychurch KCDOI: 10.3390/bios11120486
- Carbon nanotube dielectrophoresis: Theory and applications.ReviewElectrophoresis · 2020Rabbani MT, Sonker M, Ros ADOI: 10.1002/elps.202000049
- Carbon Nanotube Thin Films for High-Performance Flexible Electronics Applications.ReviewTopics in current chemistry (Cham) · 2019Hirotani J, Ohno YDOI: 10.1007/s41061-018-0227-y
- Advanced biomedical applications of carbon nanotube.ReviewMaterials science & engineering. C, Materials for biological applications · 2019
Article · 中文
奈米碳管（英語：Carbon Nanotube，縮寫為CNT）是在1991年1月由日本筑波NEC实验室的物理学家饭岛澄男使用高分辨透射电子显微镜从电弧法生产碳纤维的产物中发现的。它是一种管状的碳分子，管上每个碳原子采取sp2杂化，相互之间以碳-碳σ键结合起来，形成由六边形组成的蜂窝状结构作为碳纳米管的骨架。每个碳原子上未参与杂化的一对p电子相互之间形成跨越整个碳纳米管的共轭π电子雲。按照管子的层数不同，分为单壁碳纳米管和多壁碳纳米管。管子的半径方向非常细，只有奈米尺度，几万根碳纳米管并起来也只有一根头发丝宽，碳纳米管的名称也因此而来。而在轴向则可长达数十到数百微米。 碳纳米管不总是笔直的，局部可能出现凹凸的现象，这是由于在六边形结构中混杂了五边形和七边形。出现五边形的地方，由于张力的关系导致碳纳米管向外凸出。如果五边形恰好出现在碳纳米管的顶端，就形成碳纳米管的封口。出现七边形的地方碳纳米管则向内凹进。
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