Carbon nanothermometer containing gallium - Gallium's macroscopic properties are retained on a miniature scale in this nanodevice.
Carbon nanothermometer containing gallium - Gallium's macroscopic properties are retained on a miniature scale in this nanodevice.
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DOI：
10.1038/415599a
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发表时间：
2002-02-07
期刊：
影响因子：
64.8
通讯作者：
Bando, Y
中科院分区：
文献类型：
--
作者：
Gao, YH;Bando, Y
碳纳米管已经有了许多应用，现在我们可以在这个列表中添加一个“纳米温度计”的角色。我们描述了碳纳米管内部连续的一维液态镓柱（长约10微米，直径约75纳米）的高度如何在50-500 °C的温度范围内线性且可重复地变化，其膨胀系数与宏观状态下的镓相同。我们选择镓作为我们的热指示剂，因为它具有任何金属中最大的液体范围之一（29.78- 2，403 °C），即使在高温下也具有较低的蒸汽压。这种纳米温度计应该适用于各种微环境。
Many applications have been found for carbon nanotubes,,,,,,,, and we can now add a role as a 'nanothermometer' to this list. We describe how the height of a continuous, unidimensional column of liquid gallium inside a carbon nanotube (up to about 10 micrometres long and about 75 nanometres in diameter) varies linearly and reproducibly in the temperature range 50–500 °C, with an expansion coefficient that is the same as for gallium in the macroscopic state. We chose gallium as our thermal indicator because it has one of the greatest liquid ranges of any metal (29.78–2,403 °C) and a low vapour pressure even at high temperatures. This nanothermometer should be suitable for use in a wide variety of microenvironments.