Indeed, if you could use nanotech to create self-cleaning, antibacterial and de-odorizing materials, so that clothes, tableware, fan blades and cars would never need to be washed, and skyscrapers would gleam like new after a little rain, then you could greatly reduce the threat of water shortages.
以傳統產業來說，若能利用多種奈米級材料的自淨及抗菌、除臭效果，發明出永久免洗的衣服、碗筷、電扇葉片和車子，或是雨水輕輕一沖刷就光潔如新的自淨式摩天大樓，將可以大大減輕水荒的威脅。