We introduce a noncontact purely optical approach to measuring the localized surface properties of an interface within a system using a single optical pressure pulse and a time-resolved digital holographic quantitative phase-imaging technique to track the propagating nanometric capillary disturbance. We demonstrate the proposed method’s ability to measure the surface energy of deionized water, methanol, and chemical monolayers formed by surfactants with good agreement to published values. The development of this technique boasts immediate application to static and dynamic systems and near-future applications for living biological cell membranes.
© 2012 Optical Society of America
Original Manuscript: August 13, 2012
Revised Manuscript: November 6, 2012
Manuscript Accepted: November 12, 2012
Published: December 10, 2012
Vol. 8, Iss. 1 Virtual Journal for Biomedical Optics
David C. Clark and Myung K. Kim, "Noncontact single-pulse optical method to measure interfacial properties in intact systems," Opt. Lett. 37, 5145-5147 (2012)