Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Integration of chiral cellulose nanocrystal films in silica optical fibers
Δημιουργός/Συγγραφέας:	Antonopoulos G. [EL] Κακαράντζας, Γεώργιος[EN] Kakarantzas, George
Εκδότης:	Institute of Physics Publishing
Ημερομηνία:	2019
Γλώσσα:	Αγγλικά
ISSN:	2053-1591
DOI:	10.1088/2053-1591/ab5004
Περίληψη:	Cellulose nanocrystals have attracted great attention as new 'wonder' materials for photonic applications owing to their unique property of spontaneous self-assembly to form chiral nematic films. Here, the incorporation of chiral cellulose nanocrystal films on a photonic waveguide is demonstrated for the first time - in the form of integrated silica optical fibers with a helicoid nanocrystal film on their input facet. In order to achieve repeatable cholesteric ordering across the fiber core modal area, a fabrication method was developed where several optical fiber facets form part of a larger flat surface, which acts as the substrate for the planar anchoring of the cellulose nanocrystals. The resultant optical fibers exhibit significant circular dichroism (almost 40%) in transmission and act as all-fiber spectral filters. The proposed fabrication technique provides a simple, low-cost method for developing chiral silica optical fibers that remain compatible with standard telecommunication fiber technology. It is envisioned that the incorporation of cellulose nanocrystals in other optical fiber types will enable the development of a new class of fiber devices.
Τίτλος πηγής δημοσίευσης:	Materials Research Express
Τόμος/Κεφάλαιο:	6
Τεύχος:	11
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry
Λέξεις-Κλειδιά:	cellulose nanocrystals optical device fabrication optical fibers optical films optical materials optical polarization
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	© 2019 IOP Publishing Ltd.
Σημειώσεις:	MIS 5002735; NSRF 2014-2020; Corporation for National and Community Service, CNCS; Εθνικό 'Ίδρυμα Ερευνών, EIE: MIS 5002409; European Commission, EC; European Regional Development Fund, FEDER The authors thank Cellulose Lab for providing the CNCs. The authors thank Dr Christos Chochos (Institute of Biology, Medicinal Chemistry and Biotechnology, National Hellenic Research Foundation) for the acquisition of the SEM images. This work was supported by the project 'Advanced Materials and Devices' (MIS 5002409) and project 'ELI-LASERLAB Europe Synergy, HiPER and IPERION-CH.gr' (MIS 5002735), implemented under the Action 'Reinforcement of the Research and Innovation Infrastructure', funded by the Operational Program 'Competitiveness, Entrepreneurship and Innovation' (NSRF 2014-2020) and co-financed by Greece and the European Union (European Regional Development Fund).
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο