$diffraction glasses hot topic$

$diffraction glasses hot topic$

#Diffraction glasses hot topic windows

cm-3) and auto-tuning Langevin Horn based devices for use with high density materials (in excess of 12 g. In particular, we will develop further the 'TinyLev' device that allows routine levitation of materials with moderate density (up to 5 g. In this project we will exploit new techniques that have been developed recently in Bristol. In this project we will develop acoustic levitation methods to allow us to process materials at high temperatures without the need for a container. Hence to discover and produce new glassy materials it is ideal to work with small samples under containerless conditions. To avoid crystallization due to a container we need to use either, a very smooth container, or no container at all. Hence to improve the quench rate for a given material we need to make it as small as possible. The rate at which a very hot material will cool freely in air by radiation depends on its size. The ability of a material to form a glass reliably depends on how fast it can be cooled (the quench rate), the container it is in and the presence of any solid impurities (that promote crystallization). Hence, new methods for glass fabrication are required. ) these components need to be avoided which has a significant impact on their glass forming ability.

$diffraction glasses hot topic$

refractive index, infrared transmission, rare-earth ion content. In order to produce glasses with improved properties (e.g. In practice, this non-crystalline form is difficult to achieve for most materials, apart from those that contain significant quantities of silicon dioxide, boron oxide or phosphorus oxide. The process of making a typical oxide glass involves melting the material and allowing it to cool (quench) into a form in which the atoms have a disordered, non-crystalline arrangement. Today they remain key technological materials with additional applications in, for example, the hard glasses used in mobile phone screens, the fibre optics that underpin current high-speed communications and as laser host materials to name a few.

#Diffraction glasses hot topic windows

Their transparency at optical wavelengths makes them ubiquitous in windows for houses and cars and their use in lenses for microscopes and telescopes has been key to much scientific development. Oxide glasses have been important materials for millennia. Fabrication of novel glasses and glass micro-spheres by acoustic levitation and laser heating.

$diffraction glasses hot topic$