1. Material Structure and Architectural Design 1.1 Glass Chemistry and Spherical Architecture (Hollow glass microspheres) Hollow glass microspheres (HGMs) are microscopic, round bits composed of alkali borosilicate or soda-lime glass, generally varying from 10 to 300 micrometers in diameter, with wall densities between 0.5 and 2 micrometers. Their defining feature is a closed-cell, hollow interior Read more…
