Chiral optics of helicoidal cellulose nanocrystal films

Bodo Wilts; Ahu Gumrah Dumanli; Rox Middleton; P. Vukusic; Silvia Vignolini

doi:10.1063/1.4978387

Chiral optics of helicoidal cellulose nanocrystal films

Bodo Wilts, Ahu Gumrah Dumanli, Rox Middleton, P. Vukusic, Silvia Vignolini

Materials Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Cellulose nanocrystals in water suspensions behave as lyotropic liquid crystals forming a chiral nematic phase above a critical concentration. Such an organization can be retained in solid films and give rise to an intense colored appearance. Here,
we characterize their optical response by applying optical and scanning electron
microscopy, imaging scatterometry, and angle-resolved reflectance measurements.
We show that the experimental results are well explained by computational modeling using the finite-difference time-domain method, but slightly less well by Berremann’s analytical model.

Original language	English
Journal	APL Photonics
DOIs	https://doi.org/10.1063/1.4978387
Publication status	Published - 28 Mar 2017

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10.1063/1.4978387Licence: CC BY

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title = "Chiral optics of helicoidal cellulose nanocrystal films",

abstract = "Cellulose nanocrystals in water suspensions behave as lyotropic liquid crystals forming a chiral nematic phase above a critical concentration. Such an organization can be retained in solid films and give rise to an intense colored appearance. Here,we characterize their optical response by applying optical and scanning electronmicroscopy, imaging scatterometry, and angle-resolved reflectance measurements.We show that the experimental results are well explained by computational modeling using the finite-difference time-domain method, but slightly less well by Berremann{\textquoteright}s analytical model.",

author = "Bodo Wilts and Dumanli, {Ahu Gumrah} and Rox Middleton and P. Vukusic and Silvia Vignolini",

year = "2017",

month = mar,

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doi = "10.1063/1.4978387",

language = "English",

journal = "APL Photonics",

issn = "2378-0967",

publisher = "American Institute of Physics",

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T1 - Chiral optics of helicoidal cellulose nanocrystal films

AU - Wilts, Bodo

AU - Dumanli, Ahu Gumrah

AU - Middleton, Rox

AU - Vukusic, P.

AU - Vignolini, Silvia

PY - 2017/3/28

Y1 - 2017/3/28

N2 - Cellulose nanocrystals in water suspensions behave as lyotropic liquid crystals forming a chiral nematic phase above a critical concentration. Such an organization can be retained in solid films and give rise to an intense colored appearance. Here,we characterize their optical response by applying optical and scanning electronmicroscopy, imaging scatterometry, and angle-resolved reflectance measurements.We show that the experimental results are well explained by computational modeling using the finite-difference time-domain method, but slightly less well by Berremann’s analytical model.

AB - Cellulose nanocrystals in water suspensions behave as lyotropic liquid crystals forming a chiral nematic phase above a critical concentration. Such an organization can be retained in solid films and give rise to an intense colored appearance. Here,we characterize their optical response by applying optical and scanning electronmicroscopy, imaging scatterometry, and angle-resolved reflectance measurements.We show that the experimental results are well explained by computational modeling using the finite-difference time-domain method, but slightly less well by Berremann’s analytical model.

U2 - 10.1063/1.4978387

DO - 10.1063/1.4978387

M3 - Article

SN - 2378-0967

JO - APL Photonics

JF - APL Photonics

ER -

Chiral optics of helicoidal cellulose nanocrystal films

Abstract

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