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Photoresponsive and...
Photoresponsive and Polarization-Sensitive Structural Colors from Cellulose/Liquid Crystal Nanophotonic Structures
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- Anusuyadevi, Prasaanth Ravi (författare)
- KTH,Fiber- och polymerteknologi,KTH Royal Institute of Technology, Sweden,Royal Inst Technol KTH, Sweden
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- Shanker, Ravi (författare)
- Linköpings universitet,Laboratoriet för organisk elektronik,Tekniska fakulteten
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- Cui, Yuxiao (författare)
- KTH,Polymera material,KTH Royal Institute of Technology, Sweden,Royal Inst Technol KTH, Sweden
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- Riazanova, Anastasiia (författare)
- KTH,Fiber- och polymerteknologi,KTH Royal Institute of Technology, Sweden,Royal Inst Technol KTH, Sweden
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- Järn, Mikael (författare)
- RISE,Material- och ytdesign,RISE Res Inst Sweden, Sweden
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- Jonsson, Magnus (författare)
- Linköpings universitet,Laboratoriet för organisk elektronik,Tekniska fakulteten
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- Svagan, Anna Justina (författare)
- KTH,Fiber- och polymerteknologi,KTH Royal Institute of Technology, Sweden,Royal Inst Technol KTH, Sweden
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(creator_code:org_t)
- 2021-07-27
- 2021
- Engelska.
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Ingår i: Advanced Materials. - : Wiley. - 0935-9648 .- 1521-4095. ; 33:36, s. 2101519-
- Relaterad länk:
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https://doi.org/10.1...
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https://onlinelibrar...
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https://liu.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Cellulose nanocrystals (CNCs) possess the ability to form helical periodic structures that generate structural colors. Due to the helicity, such self-assembled cellulose structures preferentially reflect left-handed circularly polarized light of certain colors, while they remain transparent to right-handed circularly polarized light. This study shows that combination with a liquid crystal enables modulation of the optical response to obtain light reflection of both handedness but with reversed spectral profiles. As a result, the nanophotonic systems provide vibrant structural colors that are tunable via the incident light polarization. The results are attributed to the liquid crystal aligning on the CNC/glucose film, to form a birefringent layer that twists the incident light polarization before interaction with the chiral cellulose nanocomposite. Using a photoresponsive liquid crystal, this effect can further be turned off by exposure to UV light, which switches the nematic liquid crystal into a nonbirefringent isotropic phase. The study highlights the potential of hybrid cellulose systems to create self-assembled yet advanced photoresponsive and polarization-tunable nanophotonics.
Ämnesord
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Nyckelord
- cellulose nanocrystals
- circularly polarized light
- color switching
- digital color
- liquid crystals
- Cellulose derivatives
- Circular polarization
- Color
- Light polarization
- Light reflection
- Nanocomposite films
- Nanophotonics
- Nematic liquid crystals
- Birefringent layers
- Cellulose nanocrystal (CNCs)
- Cellulose structures
- Nanophotonic structures
- Photo-responsive
- Photoresponsive liquid crystals
- Polarization sensitive
- Cellulose
- Crystals
- Liquids
- Polarized Light
- Shape
- Structures
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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