Amorphous Chalcogenides: Advances and Applications by Rong Ping Wang

By Rong Ping Wang

This e-book offers a accomplished evaluation of the chalcogenide glass technology and numerous functions in accordance with the glasses. It begins with a evaluation at the glass-forming skill of assorted structures, by way of a dialogue at the structural and actual homes of varied chalcolgenide glasses and their software in built-in optics. The chapters were contributed by way of fashionable specialists from everywhere the Read more...

Show description

Read Online or Download Amorphous Chalcogenides: Advances and Applications PDF

Similar solid-state physics books

Photoemission in Solids II: Case Studies

With contributions by way of quite a few specialists

Introductory Solid State Physics (Second Edition)

Assuming an straight forward wisdom of quantum and statistical physics, this publication offers a accomplished advisor to crucial actual houses of condensed topic, in addition to the underlying concept useful for a formal realizing in their origins. the subject material covers the imperative gains of condensed subject physics, yet with specific accessory at the houses of steel alloys.

Multiscale Modeling: From Atoms to Devices

Whereas the appropriate beneficial properties and houses of nanosystems inevitably rely on nanoscopic information, their functionality is living within the macroscopic international. To rationally enhance and competently expect functionality of those structures we needs to take on difficulties the place a number of size and time scales are coupled. instead of forcing a unmarried modeling method of expect an occasion it was once no longer designed for, a brand new paradigm has to be hired: multiscale modeling.

Mechanics and Physics of Porous Solids

Mechanics and Physics of Porous Solids addresses the mechanics and physics of deformable porous fabrics whose porous house is crammed through one or numerous fluid combinations interacting with the forged matrix. Coussy makes use of the language of thermodynamics to border the dialogue of this subject and bridge the space among physicists and engineers, and organises the fabric in this sort of method that specific levels are explored, by way of coupled difficulties of accelerating complexity.

Extra resources for Amorphous Chalcogenides: Advances and Applications

Sample text

It must be emphasized that this process is fully athermal and takes place entirely at room temperature [31, 75, 76]. It should also be noted that the glass does not fully relax down to the thermodynamic equilibrium enthalpy state but rather reaches an intermediary photosaturated state corresponding to a dynamic equilibrium between photoexcitation and thermodynamically driven relaxation [34, 35]. 3 Effect of Structural Rigidity As mentioned above, ϐloppy networks tend to undergo more extensive photostructural changes due to their lower number of structural constraints.

4. 2 Dependence of the fragility measures ΔCp and ΔTg/Tg on the average coordination for Ge–Se glasses. Nonideal Systems While Ge–Se and Ge–As–Se glasses behave ideally and visibly exhibit structural effects associated with the rigidity percolation threshold, other systems may signiϐicantly deviate from ideality and exhibit diverging behaviors. This divergence may be due to a large mismatch in atomic radius, low covalency, or ionic character of constituent elements or a difϐiculty in clearly assigning the valence of elements such as Ga or Pb.

Floppy networks are expected to have a large driving force for structural relaxation, combined with high photosensitivity, and consequently exhibit extensive photorelaxation. Rigid networks also show a large propensity for thermal relaxation but instead show no measurable photorelaxation when irradiated with an intensity of 3 W/cm2. In fact, the minimum intensity required to initiate photostructural changes in rigid glasses is notably higher and appears to be directly correlated to network connectivity [33].

Download PDF sample

Rated 4.38 of 5 – based on 36 votes