Abstract
A system was designed to produce hollow silica aerogel spheres by combining a droplet generation method with sol-gel processing. Simultaneous passage of an alkoxide solution and a fill gas, through a dual-nozzle system, formed a continuous stream of hollow droplets in the fluid state. The spherical droplets were levitated in a basic atmosphere containing ammonia which converted the sol into a rigid gel state. Supercritical drying was used for the elimination of residual solvents without shrinkage and cracking.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1181-1184 |
| Number of pages | 4 |
| Journal | Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films |
| Volume | 7 |
| Issue number | 3 |
| DOIs | |
| State | Published - May 1989 |
ASJC Scopus subject areas
- Condensed Matter Physics
- Surfaces and Interfaces
- Surfaces, Coatings and Films