Now showing items 1-10 of 69
Thermal tunability of photonic bandgaps in photonic crystal fibers selectively filled with nematic liquid crystal
We address the bandgap effect and the thermo-optical response of high-index liquid crystal (LC) infiltrated in photonic crystal fibers (PCF) and in hybrid photonic crystal fibers (HPCF). The PCF and HPCF consist of solid-core ...
The improvement of thin polymer film properties through plasma immersion ion implantation and deposition technique
Thin polymer films were deposited from acetylene and argon mixtures by plasma immersion ion implantation and deposition. The effect of the pulse frequency, v, on molecular structure, optical gap, contact angle and hardness ...
Doping Effects On Variable Optical Band Gap Amorphous Silicon Nitride Compounds.
(D. Reidel Publ Co, Dordrecht, Neth, 1984)
Study of the influence of Eu3+ ions in the bandgap of K2NdNb5O15Nanopowders
Ferroelectric semiconductors oxides with tetragonal tungsten bronze TTB-type structure doped with rare earth ions have been investigated in recent years due their promising optical properties. K2Nd(1-x)EuxNb5O15 nanopowders, ...
Optical and mechanical design of an ophthalmic instrument: Slit lamp
(World Scientific Publ Co Pte Ltd, 1997-01-01)
This work has as objective to develop an interesting research line in the Optical Instrumentation area, that is to associate the Optical Design to the Ophthalmology area. The purpose of it is handling the optical design ...