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We present printable laser devices formed by dispersing dye-doped chiral nematic liquid crystals in solution-processible polymers. Unlike current technology, this allows lasers to be formed on a wide variety of surfaces, e.g. paper, plastic, metal.
Raman microscopy has been used to investigate the structure of as deposited and annealed polysilicon films formed by low-pressure chemical vapour deposition. The films were deposited between 620°C and 570°C, and the effects of various thermal annealing conditions on these samples is reported. Components of the polysilicon Raman bands have been categorised according to their wavenumber position and...
A new method has been developed that uses model u.v./visible absorption spectra to determine the relative resonance enhancement factors and the ranges of polyene lengths that contribute to a particular resonance Raman spectrum from a thermally degraded poly(urethane) foam-backed poly(vinyl chloride) sheet. Resonance Raman spectra were recorded using Microline Focus instrumentation with 514.5, 488...
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