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Quite soon in the future we’ll be using solar paint on our houses to harvest energy to power the household electricity, as researchers from the University of Notre Dame have developed low-cost solar paint using nano-sized particles of titanium dioxide, coated with cadmium sulfide or cadmium selenide. Once brushed onto any conducting materials and exposed to the sunlight, the paint will then create electricity with a light-to-energy conversion efficiency of 1%. Even though its efficiency isn’t high enough, the researchers are still trying to improve it, so as to make the solar paint both low-cost and high-efficiency for household use.