根據經濟合作與發展組織(Organization for Economic Co-operation and Development, OECD)及聯合國(United Nations, UN)的指出，有0.35億人面臨著水資源短缺的困境，人數約為三分之一，且到了2025年時將會有三分之二以上的人口會遭遇水資源缺乏的問題。
此論文中將會利用在奈米通道中控制電雙層厚度(electro-double-layer, EDL)來阻絕液體中的離子通過通道。本實驗中在陽極氧化鋁(Anodic Aluminum Oxide, AAO)奈米流道中結合利用原子層沉積技術來製做出同時具有高介電強度以及高均勻性的絕緣材料(HfO2)做為利用靜電力來控制奈米流道中的電雙層厚度技術，此設計相比於逆滲透(reversal osmosis, RO)及電滲流(eletrodialysis, ED)過濾水中離子有更好的能量效率以及產率。
本論文已達到利用EDL控制的方式可以有效的減少鹽水的濃度由原本的(NaCl 1M)，在經過十二個小時被動式的淡化反應之後濃度可大幅度降低，且阻擋離子之效果約為55%，與理論上篩選單一離子效率應為50%接近，並且利用外加幫浦使其流量加速，並且發現其效率約為30%，由此結果可知，利用此方法可以有效的阻絕離子通過奈米通道，並經由多重薄膜結合之方法，藉此發展出另一種可淡化機制及可攜帶式裝置。

The Organization of Economic Cooperation and Development (OECD) and the United Nations have reported that 0.35billion people are currently suffering from water shortage. Over one-third of world’s population lives in water-stressed countries and it will be rose two-thirds in 2025.
This paper proposes to manipulate the thickness of the electro-double-layer (EDL) inside the anodic aluminum oxide (AAO) nanochannels as virtual filter to select uni-ions for desalination through electrical static charges. Due to the electric static sieving effect at larger channel diameter (~100 nm), the power consumption is much less than those by tradition methods, such as reverse-osmosis (RO) and electrodialysis (ED) which need to function in much smaller nano pores or channels of 1 nm.
This design has been demonstrated that the concentration of the salt water can be reduced about 55%, which is closed 50% in theory. By pumping flow system to increase flow rate, the desalination rate is about 30%. According to the result, the EDL overlapping could repulse ions passing through nanochannels. Finally, we want to develop another desalinated and portable device.

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