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首页> 外文期刊>Nanotechnology research journal >On the Performance of Carbon Nanotubes in Extreme Conditions and in the Presence of Microwaves
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On the Performance of Carbon Nanotubes in Extreme Conditions and in the Presence of Microwaves

机译:碳纳米管在极端条件和微波作用下的性能

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摘要

Using van der Pauw and microwave surface resi stance measurements, a seri es of temperature-dependent data sets from carbon nanotube (C NT) thin fi I ms have been measured. The test structures were fabricated using photolithography, E -beam evaporation, and a novel CNT network deposition technique. The sheet resistance and resistivity of each sample were recorded at temperatures ranging from 0-60 °C with test currents ranging from 100 nA to 100 (μA. These val ues demonstrated excellent 1 inearity, with no dependence on currents. At room temperature, the sheet resistance yielded a negative temperature coefficient (of approximately-900 ppm/℃). Our objective is to analyze the effect that DC and microwave currents have on CNT thin films using a twopoint measurement technique on Corbi no discs and in the presence of microwaves (8-12 GHz) to determi ne at which temperatures a CNT thin film performs best and identify the ideal temperature range in which a CNT microchip yields the maxi mi zed sheet resi stance. The results counter the trend found by the four-point measurements; a positive temperature coefficient was observed. This observation indicates the temperature coefficient of the material is actually dependent on the size of the sample tested.
机译:使用范德堡和微波表面电阻测量,已经测量了来自碳纳米管(C NT)薄膜的温度相关数据集的序列。使用光刻,电子束蒸发和新型CNT网络沉积技术制造了测试结构。在0-60°C的温度范围内,以100 nA至100(μA)的测试电流记录每个样品的薄层电阻和电阻率。这些值显示出极佳的1 earearness,不受电流的影响。薄层电阻产生负温度系数(大约-900 ppm /℃)。我们的目标是使用两点测量技术在无细菌的Corbi光盘上和存在微波的情况下分析DC和微波电流对CNT薄膜的影响(确定在什么温度下CNT薄膜表现最佳,并确定CNT微芯片产生最大片材电阻的理想温度范围(8-12 GHz)。观察到正温度系数,该观察结果表明材料的温度系数实际上取决于测试样品的大小。

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