共查询到19条相似文献,搜索用时 62 毫秒
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碳纳米管在光限幅中的应用 总被引:2,自引:0,他引:2
描述了碳纳米管的结构、特点和应用,介绍了碳纳米管光限幅的效果以及研究进展.并讨论了碳纳米管材料应用于光限幅器件的实现形式及其发展前景。 相似文献
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碳纳米管的光电特性及应用 总被引:1,自引:0,他引:1
碳纳米管是一种重要的纳米材料。本文讨论了碳纳米管的原子结构,分析了其结构对碳纳米管性能的影响。本文根据场致发射理论分析了碳纳米管的场致发射性能,在此基础上,本文还分析了碳纳米管在信息电子领域的短期和长期应用前景。 相似文献
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当今各种纳米材料在液晶显示和非显示应用方面已显示出非凡潜力。其中,碳纳米管与液晶分子同具各向异性几何外形,更容易分散到液晶中,稳定性更强。本文简要综述了近年来碳纳米管/液晶复合材料的研究进展,首先介绍了碳纳米管与液晶材料的基础概念与分类,讲述了将碳纳米管分散到液晶中常用的3种方法,讨论了碳纳米管对液晶材料相变温度、光学性能、电导率、介电性质与力学性能等物理性质的影响,最后介绍了碳纳米管/液晶复合材料在致动器、传感器、手写板、高强度材料等领域的应用。对碳纳米管/液晶复合材料制备、性能与应用研究的认识,将有助于探讨碳纳米管与液晶分子间相互作用导致改善液晶热、介电、电光、力学等物理性质的确切机制,为未来相关应用的实现奠定了基础。 相似文献
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CVD工艺制备碳纳米管阵列,二甲苯(C6H4(CH3)2)作为碳源气体,二茂铁(C10H10Fe)作为催化剂前驱体,反应温度为700~800℃,碳纳米管直径30~60nm,长度50~60μm。 相似文献
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In this study, varying weight percentages of multiwalled carbon nanotubes were successfully incorporated into 95.8Sn-3.5Ag-0.7Cu
solder to synthesize novel lead-free composite solders. The composite solders were synthesized using a powder metallurgy route
consisting of blending, compaction, sintering, and extrusion. The extruded materials were then characterized for their physical,
thermal, and mechanical properties. With the addition of increasing weight percentage of carbon nanotubes, the composite solders
experienced a corresponding decrease in density values and an improvement in wetting properties. The melting temperatures
of the composite solders were found to be unchanged with additions of carbon nanotubes. However, improvements in the mechanical
properties, in terms of microhardness and tensile properties, were observed with increasing weight percentages of carbon nanotubes. 相似文献
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目前,碳纳米管(CNTs)中无定形碳含量的测定方法很多,但由于测试样品方法不完善和样品预处理的方式不同,导致测量结果有较大差别,实验的可重现性也不好。本文对一种新的测定多壁碳纳米管(MWCNTs)中无定形碳含量的方法进行了研究。该方法基于不同形态碳与CO2反应活性的差异,利用CO2柔性氧化法氧化CNTs,采用热重法(TG)测定CNTs中无定形碳含量。并且,结合拍摄CNTs高分辨电子显微(HRTEM)像,证实通过该方法可使粗品中CNTs相和无定形碳相得以区分,达到了对CNTs中无定形碳进行定量分析的目的。本文也讨论了TG测试过程中的各个影响因素。 相似文献
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The catalytic growth by chemical vapor deposition is a well-established route to single-wall carbon nanotubes (SWNTs). In this process, the choice and preparation of the metal catalyst determines the nanotube growth. The system Fe/Mo is known to yield a large percentage of SWNTs. In order to make use of SWNTs in electronic or electromechanical devices, the patterned growth relies on lithography techniques like photolithography or electron beam lithography. Many standard lithographic processes, i.e. the combination of photoresist and lift-off procedure, are not compatible with Fe/Mo catalyst solutions, resulting in low SWNT yield. We present a systematic study of the influence of the catalyst solvent on the patterned SWNT growth. Most remarkably, the use of water as a solvent is the basis for integrating SWNT with the established processing techniques due to its compatibility with any lithographic process and the simultaneous high SWNT yield. 相似文献