Self-organization in network glasses

Rigidity and Self-organization of Network Glasses and the Intermediate Phase

Self-organization and rigidity in network glasses

Rigidity theory has helped in our understanding of the properties of network glasses. We analyze the connection between rigidity and various non-random features in the network structure. Lack of small rings in the network can lead to a sharper rigidity transition. We review a model of network self-organization that we have proposed, in which the existence of an intermediate phase that is rigid,...

Local structural variability and the intermediate phase window in network glasses

Recent experimental work has shown that the width of the intermediate phase varies considerably in chalcogenide glasses containing Ge/As/Se. As the chemical composition is varied within a series of glasses, three phases are observed. As the mean coordination of the glass is increased, the floppy phase evolves through the intermediate phase rigid but unstressed into the rigid and stressed phase....

Fast-track communication Meeting experimental challenges to physics of network glasses: Assessing the role of sample homogeneity

We introduce a Raman profiling method to track homogenization of GexSe100−x melts in real time, and show that 2 g melts reacted at 950 °C in high vacuum homogenize in 168 h on a scale of 10μm. Homogenization of melts is precursive to self-organization of glasses. In the present glasses, compositional variation of Raman active corner-sharingmode frequency of GeSe4 units,molar volumes, and the en...

Developing A Fault Diagnosis Approach Based On Artificial Neural Network And Self Organization Map For Occurred ADSL Faults

Telecommunication companies have received a great deal of research attention, which have many advantages such as low cost, higher qualification, simple installation and maintenance, and high reliability. However, the using of technical maintenance approaches in Telecommunication companies could improve system reliability and users' satisfaction from Asymmetric digital subscriber line (ADSL) ser...