Near-Perfect Absorption: Wool Reflects Less Than 0.5% Visible Light
cornell-universityNear-perfect absorption in wool treated with polydopamine (PDA) reflects less than 0.5% of visible light, approaching the theoretical physical limit of perfect absorption. This optical parameter is not simply an aesthetic detail, but the thermodynamic prerequisite for triggering interfacial evaporation with maximum efficiency. The materiality of the process lies in the ability of the fabric to maintain a localized temperature gradient, isolating the volume of water underneath from overheating.
Read Report →