0.1mm Thickness Sapphire Wafer Al2O3 Material For Small Optical Glass Lens

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1. What's Sapphire? What advantage sapphire have?

Sapphire is a hard crystal,it widely been used for watch and mobilephone, Beauty equipment ,

lasers,LED, and so on.

Material Sapphire(Al2O3)

Density(20°C) Kg/m3 3.98×103

Crystal Structure

hexagonal Crystal lattice constant

a=4.785Å c=12.991 Å

Mohs hardness 9

Melting Point 2045°C

Boiling Point 3000°C

Coefficient of Thermal

Expansion α=5.8×10 -6 /K

Specific heat 0.418W.s/g/k

Thermal conduction 25.12W/m/k(@100°C)

Refractive Index (nd) no=1.768 ne=1.76 dn/dt

13×10-6/K(@633nm)

Tranmission T≈80%(0.3~5um)

Permittivity 11.5(//c), 9.3(⊥c)

Application

1. - For LED substrate application
2. Sapphire wafer and substrate applications include:
3. - Microelectronic IC applications - SOS Silicon-on-Sapphire
4. - Growth of superconducting compounds / Gallium Nitride - Infrared detectors
5. - Hybrid microelectronics - Polishing carriers
6. Hostile environment
7. Optical transmission from ultraviolet to near infrared
8. High temperature
9. Radiation resistance

2. sapphire sample size:dia12x2.5mmt lapped/lapped

3. What shape and size canwe provide?