We propose and experimentally demonstrate a novel method to fabricate subwavelength silica nanocone arrays with high aspect ratio (∼7) for multifunctional surfaces having anti-reflective, self-cleaning, and anti-fogging properties.
A gradient-index solid immersion lens is fabricated to approximate a distribution of refractive index matching derived from transformation optics. The simulation result has shown reduction of the ghost image and increase of the magnifying area.
Photonic crystal cavities embedded in photonic crystal waveguides are investigated using a nanopositioning photoluminescence mapping technique. Coupled-cavity modes near telecom wavelengths are shown and their suitability for strong light matter interaction discussed.
We present our advances on manipulation of light in metallic nanostructures, including nonlinear control of light transmission in left-handed metamaterials as well as light manipulation on metal surfaces through Airy nondiffracting surface plasmons.
We present a prototype of a micro panoramic vision system that includes five micro-cameras controlled simultaneously by mechanical arm-like actuators, structurally similar to umbrella ribs. Each camera rests on an arm that can be oriented at an angle simultaneously with the other four arms. This arrangement offers reconfigurable angle of view and depth perception. Stitching of the images from individual...
We present a discretely tunable laser utilizing a digital micromirror device. Key performance parameters include 50 μs switching time, 3 pm wavelength repeatability and up to 40 mW optical power in the near infrared.
Electrowetting reflective display has been widely studied since EWOD  was introduced. The electrowetting display has been suggested using two immiscible liquids such as colored oil and conductive liquid, normally the mixture of deionized water and some electrolytes . In this case hydrophilic grid walls prevent the colored oil from spreading over the neighboring cell, and render the conducting...
A novel micro optical diffusion sensor device has been developed, which enables high-speed measurement with a small sample volume and without using any additives. In this paper, the design of this sensor is considered.
Surface plasmon waveguides consisting of Au stripes in microfluidic channels are highly suitable as biosensors. They are capable of detecting analyte of mass over a very large dynamic range (cells to proteins) with competitive sensitivity.
We report enhanced amplified-spontaneous-emission from CdSe/ZnS quantum-dots in an all-dielectric Si3N4/SiO2 microcavity. Directional emission is observed through the cavity mode. Enhancement is confirmed with time-resolved and steady-state photoluminescence measurements showing a Purcell factor of ∼1.3.
We present simulations showing how light scattered by isolated particles increases by a factor 10, when they are placed in photonic crystal membranes. Exploiting this effect, single nano-particles have been detected with an optical microscope.
We demonstrate that guided mode resonances enhanced second- and third-harmonic generation (SHG and THG) in an azo-polymer resonant waveguide grating (RWG). The enhancement factor for SHG emission is at least 1000 compared to that of a sample without RWG e ffect.
High-frequency electromagnetic-field simulation HFSS has been performed on sub-millimeter scale split-ring resonator (SRR) metamaterials to propose electrostatically tunable THz frequency filters with integrated RF-MEMS variable capacitors and switches.
The Casimir force arising from quantum fluctuations could become the dominant interaction in silicon micromechanical devices under the appropriate conditions. The measured force is distinct from the pairwise summation of van der Waals forces.
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SYNAT - “Interdisciplinary System for Interactive Scientific and Scientific-Technical Information”.