Objective
- Development of thin, large area gel- and SiO2 glass-foils by sol-gel route
Method
- Synthesis of a viscous, high solid content sol showing one dimensional shrinkage during
the drying
- Sheet casting of the sol by ‘doctor’s blade method followed by the gelation
and drying
Results
- Synthesis of large area gel sheets (35 x 20 cm2) free of
cracking and buckling in the thickness range from 40 to few hundred micrometers and their
conversion to glass-like sheets at 400 °C in air
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- Synthesis of thin (» 50 µm) SiO2
glass foils by sintering of gel sheets up to 1000 °C in air
- Synthesis of thick, large area, flat silicon-oxycarbide glass sheet with high fracture
strength (300 MPa) and E-modulus (120 GPa)
Applications
- As matrix for hosting various ions/functional materials
- Optical/optoelectronic applications
- Laminates and substrates for mechanical strength applications
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Laboratory Technology
