(Color online) (a) Schematic view of the experimental setup for CA-CFA: controlled colloidal drop evaporation on a microfluidic cell. (b) Schematic view of the fabrication process. (c) Detail on the colloidal solution preparation.
(Color online) Fluorescence micrographs of long colloidal chains with (a) variable widths, (b) bottleneck functions, and (c) three-arm fork function. (d) Optical micrographs of short waveguides with a single emitter under both white and fluorescent illuminations.
(Color online) Schematic view of the optical experimental setup.
(Color online) Localized normalized fluorescence spectra acquired on the emitter (1) and between two different couples of spheres (2) and (3).
(Color online) From top to bottom: both white and fluorescent illumination micrograph for a waveguide with single emitter; corresponding total scattering intensity map under fluorescence illumination mode; and cross of the map along the waveguide (white arrows).
(Color online) Evolution of the attenuation in colloidal waveguides as a function of the particle size: comparison of our value with data coming from Refs. 4 and 5.
(Color online) (a) Schematic view of the principle: fluorescent microspheres positioned at the vicinity of a dielectric waveguide. [(b) and (c)] Optical micrographs of corresponding structures performed using CA-CFA and micrometric positioning stamping.
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