Lensless optical manipulation with an evanescent field
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Updated: Jul 4, 2026

Evanescent Field Based Photoacoustics: Optical Property Evaluation at Surfaces
Published on: July 26, 2016
Víctor Ruiz-Cortés1, Juan P Vite-Frías
1Departamento de Optica, División de Física Aplicada, Centro de Investigación Científica y Educación Superiorde Ensenada, Km 107 Carr. Tijuana-Ensenada, 22860 Ensenada, B.C., Mexico. vruizc@cicese.mx
Abstract:
We report on the numerical study to model a lensless optical manipulation trap to investigate some observed features as guiding and modulation effects caused by a micro-sphere. For this we calculate the field distribution and force exerted upon a micrometer-sized spherical dielectric particle in an evanescent field. The method of calculation is based on the integral equation formalism describe by A. A. Maradudin, et. al., and A. Mendoza-Suárez and E. R. Méndez. The numerical experiments were done considering a two-dimensional model.
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