Figure 1
From: Heat source free water floating carbon nanotube thermoelectric generators
Design principle of water-floating SWCNT film TEGs. Each thin film is divided into water-permeable and water-nonpermeable areas. In the former, water passes through the gaps in the SWCNT bundle to reach the surface via capillary action. The surface temperature is reduced via an evaporation-induced cooling. Thus, a temperature gradient is created in each film, with output voltage generated via the Seebeck effect.
