本論文分二部份，第一部份利用疏水性單壁奈米碳管薄膜作為電溼潤的固體表面，再藉由浸泡NH3(aq)，使碳管表面吸附NH3，並藉由電場使表面NH4+大量累積，形成電雙層。因同性電荷相互間的排斥，造成固-液間界面能下降，導致接觸角減少，最後達到電溼潤的效應。

論文第二部分利用不同磁場強度對水溶液中的H+產生向碳管表面移動或者遠離的方向控制，做為影響表面NH4+電荷累積的條件，電雙層在不同電容值的情況下，會對液體的接觸角產生不同的大小，因此，本節主要在探討磁場方向及磁場強度大小控制液體溼潤性行為。

Surface tension of silicon wafer decorated with NH3-containing single-walled carbon nanotube films (SWNTFs) is controllable by electric as well as magnetic fields. Field modulated contact angle and droplet migration are characterized and surface tensions of pristine and decorated nanotube films are calculated from experimental data by Owens-Wendt Model.

The electro-wetting (DI-water and ethylene glycol) on SWNTF is studied upon external magnetic field. Feasible mechanism is proposed and surface tensions are calculated based on experimental data using Owens-Wendt Model and Young’s Equation. Finally, we propose an model to explain the surface tension of closed tubes.

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