Hot nanotubes: Stable heating of individual multiwall carbon nanotubes to 2000 K induced by the field-emission current
Hot nanotubes: Stable heating of individual multiwall carbon nanotubes to 2000 K induced by the field-emission current
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DOI：
10.1103/physrevlett.88.105502
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发表时间：
2002-03-11
影响因子：
8.6
通讯作者：
Binh, VT
中科院分区：
文献类型：
--
作者：
Purcell, ST;Vincent, P;Binh, VT
利用单个多壁碳纳米管(MWNT)的场发射(FE)电子能谱，定量测量了在FE电流接近1MUA的情况下，峰值温度T-A高达2000K的稳定温度。高T-A是由于沿碳纳米管长度方向的焦耳加热所致。这些测量还直接给出了单个多壁碳纳米管的电阻随温度的降低，并解释了同时观察到的FE诱导发光现象。加热允许多壁碳纳米管的热解吸，因此具有优异的电流稳定性。
Field emission (FE) electron spectroscopy from an individual multiwalled carbon nanotube (MWNT) is used to measure quantitatively stable temperatures at the apex, T-A, of up to 2000 K induced by FE currents approximate to1 muA. The high T-A is due to Joule heating along the length of the MWNT. These measurements also give directly the resistance of the individual MWNT which is shown to decrease with temperature, and explain the phenomenon of FE-induced light emission which was observed simultaneously. The heating permits thermal desorption of the MWNT and, hence, excellent current stability.