Department of PhysicsDepartment of Mechanical Engineering2024-11-0920091463-907610.1039/b816784b2-s2.0-64549095578http://dx.doi.org/10.1039/b816784bhttps://hdl.handle.net/20.500.14288/12663A fully reversible photothermal tuning of an inorganic salt (NaCl)-water microdroplet standing on a superhydrophobic surface is demonstrated. The size change of the microdroplet is caused by a focused infrared laser beam in a humidity-controlled chamber and a fully reversible large spectral tuning up to similar to 40 nm is achieved. The evaporation and growth of the microdroplet are modeled using, a lumped system formulation of mass and energy conservations and a good agreement is observed between the experimental and theoretical results.ChemistryPhysical chemistryPhysicsAtomic, molecular and chemical physicsJournal Article265836100003Q24773