The holograms were fabricated using a very finely focused ion beam to cut a pattern of extremely small slits just 20 nm across through a thin silicon membrane 30 nm thick.
全息图是用精细聚焦的离子束在一片30n m厚的薄硅膜上切割出20nm长的极小的裂纹的图案组合而成的。
Optical grade with UV cut-off up to 400 nm, greater optical purity than standard grades.
光学级紫外截止到400纳米，大于标准等级的光学纯度。
Optical grade with UV cut-off up to 400 nm, greater optical purity than standard grades.
光学级紫外截止到400纳米，大于标准等级的光学纯度。
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