Tunable wettability of carbon nanotube/poly (ɛ-caprolactone) hybrid films

► We prepared three kinds of organic/inorganic hybrid film with different wettabilities. ► The wettability of the film can be controlled by its surface morphology and chemistry. ► The water droplet mobilities were reversibly switched on the tunable superhydrophobic surface. ► The wettabilities were reversibly switched on the tunable hydrophobic surface.