| Sapphire tubes OD∼3.0-40.0mm, wall thickness∼1.0-6.0mm>, length<600.0mm |
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| Ground tubes for plasma etching process |
As-grown tube |
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| Sapphire crucible (ground surfaces) |
Sapphire crucible (one-end-closed tube) |
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| Polished tube |
Polished tube |