Thermodynamical fluctuations impose random noise on the position of optical components. It is predicted that this thermal noise will limit the sensitivity of interferometric gravitational-wave detectors in their most sensitive frequency band. Thermal noise originating from optical coatings was first considered in the context of interferometric gravitational wave detectors. Its true significance...

in most of the education systems throughout the world, art is viewed as a subject of study with secondary importance. this is while art, understood in light of its profound impact on the development of human cultures, can perform unique educational functions that are out of the reach of other subjects. all-round education, therefore, is only obtained through an art-reach education program. art...

Chromium deposits rank among the most widespread metal coatings for functional and decorative purposes. However, electrodeposition from Cr(VI) aqueous solution, which is industrial process currently used to achieve thin chromium deposits, presents several environmental issues, urging development of alternative solutions. In this study, aims compare aesthetical properties coatings, 800 nm thick ...

We report on the wavelength-selective photopolymerization of a hybrid acrylate-oxetane cholesteric liquid crystal monomer mixture. By controlling sequence and rate orthogonal free-radical cationic reactions, it is possible to control degree phase separation in resulting interpenetrating networks. show that this can be used tune reflective color structurally colored coatings produced. Conversely...

as the main part of a large-scale project, the present study investigated the relationship among reflective thinking, listening anxiety, and listening comprehension of iranian efl learners with regard to their proficiency level. to this end, 223 (106 intermediate and 117 advanced) adult male and female iranian efl learners from a private language institute took part in the study by completing t...

nanoindentation techniques are widely used for the study of nanomechanical properties of thin nanocomposite coatings. theoretical concepts and practical use of nanoindentation method are summarized with reporting the applications of these tests in characterization of some particular thin nanocomposite hybrid coatings prepared by sol-gel process. the better mechanical properties can be obtained ...

High-performance thermal insulators allow a dramatic reduction in the thickness of coatings, thanks to their low conductivity. This study provides an overview about insulation materials, with regards heat reflective particular. Then, numerical investigation method adopted compute resistance associated is introduced. has been used turn check accuracy declared, measured performance different, hea...

ni-w coatings, compared to pure nanocrystalline ni, exhibit higher hardness and wear resistance. in some cases, these coatings are considered as environmental friendly alternatives for hard chromium coating. till now, most of ni-w coatings have been produced by direct current electrodeposition from alkaline baths. in this study square pulse current was used for deposition of ni-w precipitates f...

in this study, physical vapor deposition (pvd) ti-cr-n coatings were deposited at two different temperatures100 and 400ºc on hardened and tempered tool steel substrates. the influence of the applied deposition temperature on the physical and mechanical properties of coatings such as roughness, thickness, phase composition, hardness and young’s modulus were evaluated. phase compositions were stu...