Invited Article: Chiral optics of helicoidal cellulose nanocrystal films
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 the...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2017-04-01
|
| Series: | APL Photonics |
| Online Access: | http://dx.doi.org/10.1063/1.4978387 |
| Summary: | 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. |
|---|---|
| ISSN: | 2378-0967 |