TY - JOUR

T1 - Hybrid Orthorhombic Carbon Flakes Intercalated with Bimetallic Au-Ag Nanoclusters: Influence of Synthesis Parameters on Optical Properties

AU - Butt, Muhammad Abdullah

AU - Mamonova , Daria

AU - Petrov, Yuri

AU - Proklova, Alexandra

AU - Kritchenkov , Ilya

AU - Manshina, Alina

AU - Banzer, Peter

AU - Leuchs, Gerd

N1 - Publisher Copyright: © 2020 by the authors. Licensee MDPI, Basel, Switzerland.

PY - 2020/7/15

Y1 - 2020/7/15

N2 - Until recently, planar carbonaceous structures such as graphene did not show any birefringence under normal incidence. In contrast, a recently reported novel orthorhombic carbonaceous structure with metal nanoparticle inclusions does show intrinsic birefringence, outperforming other natural orthorhombic crystalline materials. These flake-like structures self-assemble during a laser-induced growth process. In this article, we explore the potential of this novel material and the design freedom during production. We study in particular the dependence of the optical and geometrical properties of these hybrid carbon-metal flakes on the fabrication parameters. The influence of the laser irradiation time, concentration of the supramolecular complex in the solution, and an external electric field applied during the growth process are investigated. In all cases, the self-assembled metamaterial exhibits a strong linear birefringence in the visible spectral range, while the wavelength-dependent attenuation was found to hinge on the concentration of the supramolecular complex in the solution. By varying the fabrication parameters one can steer the shape and size of the flakes. This study provides a route towards fabrication of novel hybrid carbon-metal flakes with tailored optical and geometrical properties.

AB - Until recently, planar carbonaceous structures such as graphene did not show any birefringence under normal incidence. In contrast, a recently reported novel orthorhombic carbonaceous structure with metal nanoparticle inclusions does show intrinsic birefringence, outperforming other natural orthorhombic crystalline materials. These flake-like structures self-assemble during a laser-induced growth process. In this article, we explore the potential of this novel material and the design freedom during production. We study in particular the dependence of the optical and geometrical properties of these hybrid carbon-metal flakes on the fabrication parameters. The influence of the laser irradiation time, concentration of the supramolecular complex in the solution, and an external electric field applied during the growth process are investigated. In all cases, the self-assembled metamaterial exhibits a strong linear birefringence in the visible spectral range, while the wavelength-dependent attenuation was found to hinge on the concentration of the supramolecular complex in the solution. By varying the fabrication parameters one can steer the shape and size of the flakes. This study provides a route towards fabrication of novel hybrid carbon-metal flakes with tailored optical and geometrical properties.

KW - laser-induced deposition

KW - hybrid carbon-metal flake

KW - orthorhombic carbon

KW - metallic nanoparticles

KW - polarization analysis

KW - Hybrid carbon-metal flake

KW - Polarization analysis

KW - Metallic nanoparticles

KW - Orthorhombic carbon

KW - Laser-induced deposition

KW - ELECTRODES

KW - MUELLER

KW - NANOPARTICLES

UR - http://www.scopus.com/inward/record.url?scp=85090706342&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/d7d42298-2259-3e21-8656-07255c9ef073/

U2 - 10.3390/nano10071376

DO - 10.3390/nano10071376

M3 - Article

VL - 10

SP - 1

EP - 10

JO - Nanomaterials

JF - Nanomaterials

SN - 2079-4991

IS - 7

M1 - 1376

ER -