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We examine the influence of disorder over millimeter lengthscales, in the transport of photons. Super-collimation is achieved for varying controlled degrees of disorder in large-scale measurements, supported by physical theory and simulations.
Here we examine the photon transport and collimation in optical superlattices, involving transverse guided resonances and disorder-induced localization. With increasing structural disorder, we observe the crossover from cascaded guided resonances into transverse localization modes.
We present measurements and modeling of collimating surface states in slow-light photonic crystal superlattices consisting of alternating dispersive and homogeneous media. Superlattice periodicity allows evanescent-wave resonant coupling to surface photon bound states, supporting collimation.
We report for the first time the combination of a quartz-based photonic crystal (PC) with a detection instrument designed to perform label-free (LF) and enhanced fluorescence (EF) imaging for antibody microarray applications. Label-free detection is used to quantify binding density of immobilized capture antibodies. Angle-scanning approach is implemented to achieve more uniform fluorescence enhancement...
We present experimental observations of self-collimation effect in photonic crystal superlattices consisting of photonics crystal region and homogeneous media. The high-resolution near-field scanning optical microscopy is supported by precise nanofabrication, and rigorous 3D-FDTD simulations.
A photonic crystal substrate exhibiting resonant enhancement of multiple fluorophores has been demonstrated. The device, fabricated uniformly from plastic materials over a ~3×5 in2 surface area by nanoreplica molding, utilizes two distinct resonant modes to enhance electric field stimulation of a dye excited by a λ = 632.8 nm laser (cyanine-5) and a dye excited by a λ...
The refractive index contrast in dielectric multilayer structures, optical resonators and photonic crystals is an important figure of merit, which creates a strong demand for high quality thin films with a very low refractive index. SiO2 nano-rod layers with low refractive indices n= 1.08, the lowest ever reported in thin-film materials, is grown by oblique-angle e-beam deposition of nano-rod layer...
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