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- W3135890268 abstract "Abstract High aspect ratio (HAR) nanoneedle arrays can be used to tune the intrinsic properties of substrates such as their wettability and reflectivity. Here, a simple and scalable fabrication method for producing dense arrays of freestanding polyethylene glycol (PEG) nanoneedles with sub 50 nm tips and surface coverage up to 83 needles per µm 2 is presented. Two distinct sets of silicon nanoneedle master arrays with base diameters between 15 and 265 nm and heights between 146 and 613 nm are fabricated using block copolymer micelle lithography. Replication of selected silicon masters using photocurable polymers produces HAR PEG nanoneedle arrays with feature base diameters ranging between 15 and 292 nm and heights between 133 and 656 nm. At their maximum, the aspect ratio of the pillars is 4.6. PEG nanoneedle arrays are produced using polymers with two different molecular weights as well as two different photoinitiators, showing the versatility of the process." @default.
- W3135890268 created "2021-03-15" @default.
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- W3135890268 date "2021-03-05" @default.
- W3135890268 modified "2023-10-16" @default.
- W3135890268 title "High Aspect Ratio Polymeric Nanoneedle Arrays" @default.
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- W3135890268 doi "https://doi.org/10.1002/mame.202000754" @default.
- W3135890268 hasPublicationYear "2021" @default.
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