AAO Mould for Fabricating Anti-Reflective Polymer Nanopillar Array on Large Area

Anti-reflective polystyrene nanopillar arrays were fabricated by the process of hot embossing where it utilizes the nickel coated anodised aluminium oxide template. Electroless plating being a catalytic method of plating uniformly coats the membrane which increases its strength. The supporting layer...

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Bibliographic Details
Published in:Key engineering materials 2022-09, Vol.931, p.3-8
Main Authors: Venkateswara Rao, Paruchuri, Sharma, Anagdha, Aravindan, Sivanandam
Format: Article
Language:English
Subjects:
Aluminum oxide
Area
Arrays
Electroless nickel plating
Embossing
High aspect ratio
Light reflection
Molds
Polystyrene resins
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Summary:Anti-reflective polystyrene nanopillar arrays were fabricated by the process of hot embossing where it utilizes the nickel coated anodised aluminium oxide template. Electroless plating being a catalytic method of plating uniformly coats the membrane which increases its strength. The supporting layer of nickel makes AAO template suitable to be used as a mould multiple times. Highly conformal nanopillars of average diameter 400nm and length 30 μm to 50μm were fabricated on the area of ⁓5cm2. Hot embossing process ensures repeatability with precision and high throughput. The enhanced light entrapping is attributed to the multiple internal reflection in the nanopillars of high aspect ratio.
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/p-120pst