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Cellulose for Light Manipulation: Methods, Applications, and Prospects
Summary
This review explores how cellulose, one of the most abundant natural biopolymers, can be engineered to manipulate light for use in optical devices. Researchers summarize advances in creating photonic crystals, liquid crystals, and random lasers from cellulose-based materials. The study highlights cellulose as a sustainable, biodegradable alternative to fossil-based polymers in optoelectronic applications like solar cells and flexible displays.
Abstract Cellulose is one of the most abundant biopolymers on earth. It is a sustainable and renewable raw material with many beneficial properties. Due to its availability, nontoxicity, environmental friendliness, biocompatibility, and biodegradability, cellulose is one of the world's most used biopolymers. Cellulose is currently establishing its role as a strong potential candidate for advanced applications in various engineering fields. In addition, cellulose and some of its derivatives exhibit properties, which recommend themselves for use in optical applications and for manipulating light in a targeted manner. In the last decades, efforts were directed toward the production of artificial ordered structures such as photonic crystals, chiral nematic liquid crystals or Bragg stacks, as well as disordered structures such as random lasers from cellulose in order to tailor the interaction of visible light with biopolymers. Due to its sustainable availability and its ability to manage light interactions, cellulose is increasingly used in optoelectronic devices to replace fossil‐based polymers. Cellulose and its derivatives can be consequently applied as optical fibers, probes, organic light emitting diodes, flexible touch screens, and solar cells. The present review provides an overview of the processability and applications of cellulose and its derivatives for the specific manipulation of light.
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