Micropatterned Liquid Crystalline Networks for Multipurpose Color Pixels
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| Názov: | Micropatterned Liquid Crystalline Networks for Multipurpose Color Pixels |
|---|---|
| Autori: | Zubritskaya, Irina, 1984, Martella, Daniele, Nocentini, Sara |
| Zdroj: | ACS Applied Materials & Interfaces. 17(7):11100-11107 |
| Predmety: | microprinting, multiresponsive materials, liquid crystalline networks, color pixels, digital light projection lithography |
| Popis: | Materials that can visually report changes in the surrounding environments are essential for future portable sensors that monitor temperature and detect hazardous chemicals. Ideal responsive materials for optical sensors are defined by a rapid response and readout, high selectivity, the ability to operate at room temperature, and simple microfabrication. However, because of the lack of viable materials and approaches, compact, passive, and multipurpose practical devices are still beyond reach. To address this challenge, we develop a methodology to fabricate colored and responsive micropixels printed by digital light projection lithography on gold substrates. These structures are made by polymeric Liquid Crystalline Networks (LCNs) whose birefringence and external stimuli responsiveness allow for micrometric devices with visual and fast response that we here apply to a few applications. First, we show how varying the projected geometrical shape can become an effective tool to engineer symmetric disclination lines in the liquid crystal order. Depending on the thickness of the micropixels, LCNs give rise to a birefringence color under polarized light or a structural color under white light due to thin-film interference. By exposing the micropatterns to temperature variation and solvents, we demonstrate a real-time optical temperature detection and differentiation between selected organic chemicals. The proposed materials and fabrication method could be scaled up and extended to roll-to-roll printing, enabling future real-life applications of liquid crystalline polymers in affordable microdevices and optical sensors with a net advantage with respect to traditional lithographic techniques in terms of fabrication speeds and costs. |
| Popis súboru: | electronic |
| Prístupová URL adresa: | https://research.chalmers.se/publication/545145 https://research.chalmers.se/publication/545145/file/545145_Fulltext.pdf |
| Databáza: | SwePub |
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| Items | – Name: Title Label: Title Group: Ti Data: Micropatterned Liquid Crystalline Networks for Multipurpose Color Pixels – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Zubritskaya%2C+Irina%22">Zubritskaya, Irina</searchLink>, 1984<br /><searchLink fieldCode="AR" term="%22Martella%2C+Daniele%22">Martella, Daniele</searchLink><br /><searchLink fieldCode="AR" term="%22Nocentini%2C+Sara%22">Nocentini, Sara</searchLink> – Name: TitleSource Label: Source Group: Src Data: <i>ACS Applied Materials & Interfaces</i>. 17(7):11100-11107 – Name: Subject Label: Subject Terms Group: Su Data: <searchLink fieldCode="DE" term="%22microprinting%22">microprinting</searchLink><br /><searchLink fieldCode="DE" term="%22multiresponsive+materials%22">multiresponsive materials</searchLink><br /><searchLink fieldCode="DE" term="%22liquid+crystalline+networks%22">liquid crystalline networks</searchLink><br /><searchLink fieldCode="DE" term="%22color+pixels%22">color pixels</searchLink><br /><searchLink fieldCode="DE" term="%22digital+light+projection+lithography%22">digital light projection lithography</searchLink> – Name: Abstract Label: Description Group: Ab Data: Materials that can visually report changes in the surrounding environments are essential for future portable sensors that monitor temperature and detect hazardous chemicals. Ideal responsive materials for optical sensors are defined by a rapid response and readout, high selectivity, the ability to operate at room temperature, and simple microfabrication. However, because of the lack of viable materials and approaches, compact, passive, and multipurpose practical devices are still beyond reach. To address this challenge, we develop a methodology to fabricate colored and responsive micropixels printed by digital light projection lithography on gold substrates. These structures are made by polymeric Liquid Crystalline Networks (LCNs) whose birefringence and external stimuli responsiveness allow for micrometric devices with visual and fast response that we here apply to a few applications. First, we show how varying the projected geometrical shape can become an effective tool to engineer symmetric disclination lines in the liquid crystal order. Depending on the thickness of the micropixels, LCNs give rise to a birefringence color under polarized light or a structural color under white light due to thin-film interference. By exposing the micropatterns to temperature variation and solvents, we demonstrate a real-time optical temperature detection and differentiation between selected organic chemicals. The proposed materials and fabrication method could be scaled up and extended to roll-to-roll printing, enabling future real-life applications of liquid crystalline polymers in affordable microdevices and optical sensors with a net advantage with respect to traditional lithographic techniques in terms of fabrication speeds and costs. – Name: Format Label: File Description Group: SrcInfo Data: electronic – Name: URL Label: Access URL Group: URL Data: <link linkTarget="URL" linkTerm="https://research.chalmers.se/publication/545145" linkWindow="_blank">https://research.chalmers.se/publication/545145</link><br /><link linkTarget="URL" linkTerm="https://research.chalmers.se/publication/545145/file/545145_Fulltext.pdf" linkWindow="_blank">https://research.chalmers.se/publication/545145/file/545145_Fulltext.pdf</link> |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1021/acsami.4c20865 Languages: – Text: English PhysicalDescription: Pagination: PageCount: 8 StartPage: 11100 Subjects: – SubjectFull: microprinting Type: general – SubjectFull: multiresponsive materials Type: general – SubjectFull: liquid crystalline networks Type: general – SubjectFull: color pixels Type: general – SubjectFull: digital light projection lithography Type: general Titles: – TitleFull: Micropatterned Liquid Crystalline Networks for Multipurpose Color Pixels Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Zubritskaya, Irina – PersonEntity: Name: NameFull: Martella, Daniele – PersonEntity: Name: NameFull: Nocentini, Sara IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 01 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 19448252 – Type: issn-print Value: 19448244 – Type: issn-locals Value: SWEPUB_FREE – Type: issn-locals Value: CTH_SWEPUB Numbering: – Type: volume Value: 17 – Type: issue Value: 7 Titles: – TitleFull: ACS Applied Materials & Interfaces Type: main |
| ResultId | 1 |