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Metal Velvet has low resistance to abrasion and all surface contact should be avoided without proper equipment.
Acktar 吸光箔片與吸光薄膜用於不能對零部件直接鍍膜的應用（包括光學包裝、雷射設備與平臺、紅外系統或被動熱控制）可消除光反射。Acktar 吸光箔片與吸光薄膜具有高發射率、低反射率、低釋氣率、出眾的生物相容性、寬泛的工作溫度範圍以及與 1 級潔淨室相容等特點。Acktar 吸光箔片與吸光薄膜有預先切割樣式，也可提供大張版本供使用者客製切割樣式。
Acktar 吸光箔片與吸光薄膜採用 Metal Velvet™ (散射鍍鋁膜)、 Spectral Black™ (半鏡面鍍鋁膜)、MaxiBlack™ (聚醯亞胺散射鍍膜) 或 Lambertian Black™ (不銹鋼散射鍍膜)。Metal Velvet 具有卓越的光吸收性能，而 Spectral Black 更加耐用， Lambertian Black 在掠射角度下的性能更佳。Maxiblack 不僅靈活耐用且不導電，可用於需要使用不導電的吸光材料的應用。
請注意：Metal Velvet 耐磨性較差，因此在沒有使用適當設備的情況下應避免所有表面接觸。
| Product Type | Metal Velvet™ | Lambertian Black™ | MaxiBlack™ | Spectral Black™ | Hexa-Black™ |
| Key Features | Low reflectance of ~1% | High absorption at grazing angles | Thin polyimide, nonconductive substrate | Semi-specular finish | Ultra-high absorption at grazing angles |
| Substrate Material | Aluminum | Stainless Steel | Polyimide (Kapton) | Aluminum | Aluminum Honeycomb |
| Substrate Thickness | 120µm | 100µm | 75µm | 130µm | 2mm |
| Appearance | Diffusive | Highly Diffusive | Diffusive | Specular | Diffusive 3D Structure |
| Typical Spectral Range | EUV - FIR | EUV - FIR | UV - MWIR | VIS - MWIR | EUV - FIR |
| AOI Range | 0 - 60° | 0 - 80° | 0 - 60° | 0 - 45o | 0 - 88° |
| Reflectance @ 0° AOI | ~1% | ~1.5% | ~2.5% | ~2% | ~1.5% |
| Abrasion Resistance | Light | Moderate to High | Moderate | Moderate | Moderate |
| Cleanliness | Class 10000 - ISO 7 | Class 100 - ISO 5 | Class 100 - ISO 5 | Class 100 - ISO 5 | Class 10000 - ISO 7 |
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