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Off-Stoichiometry I...
Off-Stoichiometry Improves Photostructuring of Thiol-Enes Through Diffusion-Induced Monomer Depletion
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- Karlsson, J. Mikael (författare)
- KTH,Mikro- och nanosystemteknik
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- Pardon, Gaspard, 1983- (författare)
- KTH,Mikro- och nanosystemteknik
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- Vastesson, Alexander (författare)
- KTH,Mikro- och nanosystemteknik
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- Supekar, Omkar (författare)
- KTH,Mikro- och nanosystemteknik
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- Carlborg, Carl Fredrik (författare)
- KTH,Mikro- och nanosystemteknik
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- Brandner, Brigit (författare)
- SP Technical Research Institute of Sweden
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- van der Wijngaart, Wouter (författare)
- KTH,Mikro- och nanosystemteknik
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- Haraldsson, Tommy (författare)
- KTH,Mikro- och nanosystemteknik
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(creator_code:org_t)
- 2016-02-15
- 2016
- Engelska.
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Ingår i: Microsystems and Nanoengineering. - : Nature Publishing Group. - 2055-7434. ; 2
- Relaterad länk:
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https://doi.org/10.1...
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http://www.nature.co...
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https://kth.diva-por... (primary) (Raw object)
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https://www.nature.c...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Thiol-enes are a group of alternating copolymers with highly ordered networks used in a wide range of applications. Here, “click” chemistry photostructuring in off-stoichiometric thiol-enes is shown to induce microscale polymeric compositional gradients due to species diffusion between non-illuminated and illuminated regions, creating two narrow zones with distinct composition on either side of the photomask feature boundary: a densely cross-linked zone in the illuminated region and a zone with an unpolymerized highly off-stoichiometric monomer composition in the non-illuminated region. By the use of confocal Raman microscopy, it is here explained how species diffusion causes such intricate compositional gradients in the polymer, and how off-stoichiometry results in improved image transfer accuracy in thiol-ene photostructuring. Furthermore, increasing the functional group off-stoichiometry and decreasing photomask feature size is shown to amplify the induced gradients, which potentially leads to a new methodology for microstructuring.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Nanoteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Nano-technology (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Textil-, gummi- och polymermaterial (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Textile, Rubber and Polymeric Materials (hsv//eng)
Nyckelord
- thiol-ene
- oste
- OSTEmer
- polymer
- photopatterning
- photolithography
- monomer diffusion
- click chemistry
- Raman confocal microscopy
- microfluidics
- Electrical Engineering
- Elektro- och systemteknik
- Teknisk materialvetenskap
- Materials Science and Engineering
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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