I had an idea for one of my books, maybe someone could help me with it? The idea was Spacesuits which have a special two-way material which could function as both insulation, on one side, and a heat absorber on the other. Sort of like a living plant, the suit could collect all the energy of the Solar radiation and use it for heating, cooling, and energy of the suit, while the suit material on the other side would only allow heat energy to travel in one direction, thus keeping the user insulated. Are there any other stories with such a thing? And what are technical problems of such a suit? As I don't know much about engineering such a suit.