A portable system for photoelectrochemical detection of lactate on TiO2 nanoparticles and [Ni(salen)] polymeric film - Bott Neto, José Luiz; Martins, Thiago Serafim; Buscaglia, Lorenzo Antonio; Santiago, Patrícia V.B.; Fernandez, Pablo S.; Machado, Sergio Antonio Spinola; Oliveira Junior, Osvaldo Novais de (Sensors and Actuators B, 2021)