Evanescent wave optical binding forces on spherical microparticles
نویسندگان
چکیده
منابع مشابه
Optical forces from an evanescent wave on a magnetodielectric small particle.
We report the first study on the optical force exerted by an evanescent wave on a small sphere with both electric and magnetic responses to the incident field, immersed in an arbitrary nondissipative medium. New expressions and effects from their gradient, radiation pressure, and curl components are obtained owing to the particle induced electric and magnetic dipoles, as well as to their mutual...
متن کاملMultifunctional Nanowire Evanescent Wave Optical Sensors
Compact, reusable chemical sensors are highly desirable for on-site detection in the field, including the identification of water contaminants, hazardous biochemical compounds, or blood serum content. Ideally, such a sensing platform should be portable, and employ several complementary sensing modalities that allow quantitative chemical identification of extremely small sample volumes. Optical ...
متن کاملEvanescent-wave bonding between optical waveguides.
Forces arising from overlap between the guided waves of parallel, microphotonic waveguides are calculated. Both attractive and repulsive forces, determined by the choice of relative input phase, are found. Using realistic parameters for a silicon-on-insulator material system, we estimate that the forces are large enough to cause observable displacements. Our results illustrate the potential for...
متن کاملOptical fiber humidity sensor based on evanescent-wave scattering.
The phenomenon of evanescent-wave scattering (EWS) is used to design an optical-fiber humidity sensor. Porous solgel silica (PSGS) coated on the surface of a silica optical-fiber core scatters evanescent waves that penetrate the coating layer. Water molecules in the gas phase surrounding the optical fiber can be absorbed into the inner surface of the pores of the porous silica. The absorbed wat...
متن کاملOptical Forces and Torques Acting on Non-spherical Metallic Nanoparticles
Metallic nanoparticles (NPs) are nowadays used in various areas of biology, chemistry or physics, e.g. they are used as a heat source causing hybridization of DNA or probes for surface enhanced Raman spectroscopy. Focused laser beams, so-called optical tweezers [1], are widely used to manipulate dielectric particles or even living cells. Optical tweezers may be used as well to manipulate metall...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Optics Letters
سال: 2015
ISSN: 0146-9592,1539-4794
DOI: 10.1364/ol.40.004042