title: Chiral Plasmonics Using Twisting along Cellulose Nanocrystals as a Template for Gold Nanoparticles.
abstract: The right-handed twist along aqueous dispersed cellulose nanocrystals allows right-handed chiral plasmonics upon electrostatic binding of gold nanoparticles in dilute environment, through tuning the particle sizes and concentrations. Simulations using nanoparticle coordinates from cryo-electron tomography confirm the experimental results. The finding suggests generalization for other chiral and helical colloidal templates for nanoscale chiral plasmonics.
authors.affiliation: Department of Applied Physics, Aalto University, P. O. Box 15100, FIN-00076, Aalto, Espoo, Finland.
authors.forename: Johanna
authors.initials: J
authors.lastname: Majoinen
authors.affiliation: Department of Applied Physics, Aalto University, P. O. Box 15100, FIN-00076, Aalto, Espoo, Finland.
authors.forename: Jukka
authors.initials: J
authors.lastname: Hassinen
authors.affiliation: Department of Applied Physics, Aalto University, P. O. Box 15100, FIN-00076, Aalto, Espoo, Finland.
authors.forename: Johannes S
authors.initials: JS
authors.lastname: Haataja
authors.affiliation: Department of Applied Physics, Aalto University, P. O. Box 15100, FIN-00076, Aalto, Espoo, Finland.
authors.forename: Heikki T
authors.initials: HT
authors.lastname: Rekola
authors.affiliation: Department of Forest Products Technology, Aalto University, P. O. Box 16300, FIN-00076, Aalto, Espoo, Finland.
authors.forename: Eero
authors.initials: E
authors.lastname: Kontturi
authors.affiliation: Department of Biotechnology and Chemical Technology, Aalto University, P. O. Box 16100, FIN-00076, Aalto, Espoo, Finland.
authors.forename: Mauri A
authors.initials: MA
authors.lastname: Kostiainen
authors.affiliation: Department of Applied Physics, Aalto University, P. O. Box 15100, FIN-00076, Aalto, Espoo, Finland.
authors.forename: Robin H A
authors.initials: RH
authors.lastname: Ras
authors.affiliation: Department of Applied Physics, Aalto University, P. O. Box 15100, FIN-00076, Aalto, Espoo, Finland.
authors.forename: Päivi
authors.initials: P
authors.lastname: Törmä
authors.affiliation: Department of Applied Physics, Aalto University, P. O. Box 15100, FIN-00076, Aalto, Espoo, Finland.
authors.forename: Olli
authors.initials: O
authors.lastname: Ikkala
keywords: cellulose nanocrystals; chiral plasmonics; colloidal dispersions; templated nanoparticles; twisted nanorods