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The properties of a machinable, high refractive index, low-loss, low-cost material are investigated. Both a THz-TDS and a Vector Network Analyzer (0.75–1.1 THz) are used to characterize the material and precisely obtain the absorption coefficient. Fresnel lenses are fabricated with a micro milling system to demonstrate the shaping capabilities of the aluminium nitride based ceramic.
This paper presents the switching of slow light properties of one dimensional spoof surface plasmon polariton structures with liquid crystals. The phase transition of the liquid crystal is induced thermally.
We discuss the improved performance of a microfluidic cell for chemical detection. The sensitivity is increased by placing the microfluidic cell in photonic crystal cavity. The insecticide methomyl is used as an exemplary chemical.
We describe the microstructuring of a silicon surface to act as a spatially tunable dielectric layer. As an example, we show FDTD simulations and fabrication results of it used as an antireflective layer optimized for the terahertz region.
A low-cost process for the fabrication of spoof surface plasmon polariton (SPP) structures, designed to operate in the THz frequency region, is shown. The process uses microfabricated templates for the fabrication of structured surfaces which are sputter coated with metal. The propagation of the THz radiation along the structured surfaces, coupled using knife-edge scattering, is characterized using...
Ultra-sharp tungsten probes are essential to a wide variety of applications in nanotechnology. In scanning probe microscopy, field emission microscopy, neurobiology and many other applications these tools provide a means of physically interacting with the nanoscopic world. A new technique for creating these probes has been developed to overcome current limitations in conventional drop-off methods...
Here we present a silicon based, micro‐machined fluidic device for terahertz frequencies, fabricated using standard lithographic and micro‐machining processes in a cleanroom environment. Designed for use in a conventional transmission terahertz time‐domain spectroscopy (THz‐TDS) arrangement, we present a possible solution to the ‘water problem’ currently hampering the analysis of aqueous and biological...
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