CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume PC13016 > Article
Presentation
18 June 2024 Cellulose-based nanocomposites for anti-counterfeiting applications
Susete N. Fernandes, Erica Fuoco, Pedro E. S. Silva, Ricardo Chagas, Jorge M. P. Viana, Maria P. De Santo, Ricardo C. Barberi, Maria H. Godinho
Author Affiliations +
Proceedings Volume PC13016, Liquid Crystals Optics and Photonic Devices; PC130160F (2024) https://doi.org/10.1117/12.3023929
Event: SPIE Photonics Europe, 2024, Strasbourg, France
Abstract
Counterfeit products have become more accurate with technology development, and deterrent anti-counterfeiting solutions are in constant demand. Structural-color-generating films from cellulose nanocrystals (CNC) nanocomposites present good properties to be used as anti-counterfeiting systems. Derived from liquid crystalline suspensions, these photonic materials present selective left-handed circular reflection that acts as a covert anti-counterfeiting feature, while the structural coloration that can act as an overt feature, flexibility, and response to multiple stimuli (can act as additional covert features). [1-4] Tunning optical properties and flexibility of solid films of CNC with other cellulosic derivatives was explored by the addition of hydroxypropylcellulose (HPC) [3] and hydroxypropylmethylcellulose (HPMC) [5] in home-made and commercial cellulose nanocrystals in liquid crystalline colloidal suspension, within the biphasic regime. HPC and HPMC content allows modulation of the reflected pitch value within all composite systems and induces flexibility. These new photonic cellulose-based nanomaterials are excellent candidates as anti-counterfeiting optical variable devices.
Conference Presentation
© (2024) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Susete N. Fernandes, Erica Fuoco, Pedro E. S. Silva, Ricardo Chagas, Jorge M. P. Viana, Maria P. De Santo, Ricardo C. Barberi, and Maria H. Godinho "Cellulose-based nanocomposites for anti-counterfeiting applications", Proc. SPIE PC13016, Liquid Crystals Optics and Photonic Devices, PC130160F (18 June 2024); https://doi.org/10.1117/12.3023929
ACCESS THE FULL ARTICLE
ORGANIZATIONAL
Sign in with credentials provided by your organization.
INSTITUTIONAL
Select your institution to access the SPIE Digital Library.
SELECT YOUR INSTITUTION
PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.
PERSONAL SIGN IN
No SPIE Account? Create one
PURCHASE THIS CONTENT
SUBSCRIBE TO DIGITAL LIBRARY
50 downloads per 1-year subscription
Members: $195
Non-members: $335 ADD TO CART
25 downloads per 1 - year subscription
Members: $145
Non-members: $250 ADD TO CART
PURCHASE SINGLE ARTICLE
Includes PDF, HTML & Video, when available
Members: $17.00
Non-members: $21.00 ADD TO CART
PROCEEDINGS
 PRESENTATION
WATCH
PRESENTATION SAVE TO MY LIBRARY
GET CITATION
Advertisement
Advertisement
KEYWORDS
Nanocomposites
Industrial applications
Crystals
Reflection
Cellulose
Liquid crystals
Liquids
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top