Abstract
A microscopic radiation-pressure interface-deformation method was developed in order to characterize chemical and mechanical properties of liquid interface in microchannels.. In this method, amplitude and phase signals of forced capillary waves induced by periodic irradiation of excitation beam were measured. Validity of this method was demonstrated by measuring critical micellar concentration of surfactant at water / heptane interface. Copyright © 2005 by the Transducer Research Foundation, Inc.