摘要 |
An apparatus includes a hollow heater. The hollow heater includes a hollow supporter, a heating element and at least two electrodes. The hollow supporter defines a hollow space. The hollow supporter has an inner surface and an outer surface. The heating element is attached on one of the inner and outer surfaces of the hollow supporter. The heat element includes at least one linear carbon nanotube structure. The at least two electrodes are electrically connected to the heating element.
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