scholarly journals Size-selective optical forces for microspheres using evanescent wave excitation of whispering gallery modes

2008 ◽  
Vol 92 (25) ◽  
pp. 251109 ◽  
Author(s):  
Jack Ng ◽  
C. T. Chan
Keyword(s):  
Evanescent Wave ◽  
Whispering Gallery Modes ◽  
Optical Forces ◽  
Wave Excitation ◽  
Whispering Gallery ◽  
Evanescent Wave Excitation

Optical waveguide sensor using evanescent wave excitation of fluorescent dye in sol-gel glass

1991 ◽  
Vol 27 (14) ◽  
pp. 1247 ◽  
Author(s):  
B.D. MacCraith ◽  
V. Ruddy ◽  
C. Potter ◽  
B. O'Kelly ◽  
J.F. McGilp
Keyword(s):  
Optical Waveguide ◽  
Evanescent Wave ◽  
Sol Gel ◽  
Fluorescent Dye ◽  
Wave Excitation ◽  
Evanescent Wave Excitation ◽  
Waveguide Sensor

scholarly journals Large-scale dynamic assembly of metal nanostructures in plasmofluidic field

2016 ◽  
Vol 186 ◽  
pp. 95-106 ◽  
Author(s):  
Partha Pratim Patra ◽  
Rohit Chikkaraddy ◽  
Sreeja Thampi ◽  
Ravi P. N. Tripathi ◽  
G. V. Pavan Kumar
Keyword(s):  
Evanescent Wave ◽  
Large Scale ◽  
Metal Nanostructures ◽  
Plasmonic Nanostructures ◽  
Wave Excitation ◽  
Fluid Interface ◽  
Test Bed ◽  
Ag Nanowires ◽  
Dynamic Assembly ◽  
Evanescent Wave Excitation

We discuss two aspects of the plasmofluidic assembly of plasmonic nanostructures at the metal–fluid interface. First, we experimentally show how three and four spot evanescent-wave excitation can lead to unconventional assembly of plasmonic nanoparticles at the metal–fluid interface. We observed that the pattern of assembly was mainly governed by the plasmon interference pattern at the metal–fluid interface, and further led to interesting dynamic effects within the assembly. The interference patterns were corroborated by 3D finite-difference time-domain simulations. Secondly, we show how anisotropic geometry, such as Ag nanowires, can be assembled and aligned in unstructured and structured plasmofluidic fields. We found that by structuring the metal-film, Ag nanowires can be aligned at the metal–fluid interface with a single evanescent-wave excitation, thus highlighting the prospect of assembling plasmonic circuits in a fluid. An interesting aspect of our method is that we obtain the assembly at locations away from the excitation points, thus leading to remote assembly of nanostructures. The results discussed herein may have implications in realizing a platform for reconfigurable plasmonic metamaterials, and a test-bed to understand the effect of plasmon interference on assembly of nanostructures in fluids.

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