Forma, Vol. 13 (No. 4), pp. 387-396, 1998
Original Paper

Characteristic Spatio-Temporal Responses to Chemical Stimuli in an Oil-Water System

Satoshi Nakata, Kaori Takemura and Yuko Hayashima

Department of Chemistry, Nara University of Education, Takabatake-cho, Nara 630-8528, Japan

(Received October 26, 1998; Accepted January 14, 1999)

Keywords: Spontaneous Oscillation, Oil-Water Liquid Membrane, Nonlinear, Sensor

Abstract. The spontaneous motion of an oil droplet in an aqueous phase with a cationic surfactant was investigated. The spatio-temporal motion changed depending on chemical stimuli (acid, sucrose, and alcohol) in the aqueous phase. The spatio-temporal responses to the chemical stimuli were discussed in relation to the heterogeneity of the interfacial tension at the oil-water interface, and Young's equation.