Chiral nanoceramics

J Fan, NA Kotov - Advanced Materials, 2020 - Wiley Online Library
The study of different chiral inorganic nanomaterials has been experiencing rapid growth
during the past decade, with its primary focus on metals and semiconductors. Ceramic …

The circular Bragg phenomenon

M Faryad, A Lakhtakia - Advances in Optics and Photonics, 2014 - opg.optica.org
Exhibited by structurally chiral materials—such as Reusch piles, cholesteric liquid crystals
(CLCs), and chiral sculptured thin films (STFs)—due to their helical nonhomogeneity along a …

Geometric phase in plane-wave transmission by a dielectric structurally chiral slab with a central phase defect

A Lakhtakia - Physical Review A, 2024 - APS
A slab made of a dielectric structurally chiral medium (DSCM) strongly reflects the cohanded
circularly polarized plane wave, but not the crosshanded circularly polarized plane wave, in …

Modeling chiral sculptured thin films as platforms for surface-plasmonic-polaritonic optical sensing

TG Mackay, A Lakhtakia - IEEE Sensors Journal, 2010 - ieeexplore.ieee.org
Biomimetic nanoengineered metamaterials called chiral sculptured thin films (CSTFs) are
attractive platforms for optical sensing because their porosity, morphology, and optical …

Polarization-universal bandgaps realized with chiral sculptured thin films

RA Fiallo, MW Horn, A Lakhtakia - JOSA B, 2022 - opg.optica.org
Two thin-film structures comprising chiral sculptured thin films (CSTFs) were fabricated to
exploit the circular Bragg phenomenon (CBP) exhibited by CSTFs for realizing polarization …

Nanostructured porous SiO2 films for antireflection coatings

KMA Sobahan, YJ Park, JJ Kim, CK Hwangbo - Optics Communications, 2011 - Elsevier
Thin films with a low refractive index play an important role in optics, optoelectronics, and
microelectronics. In this study, we present nanostructured porous SiO2 films fabricated by …

Study of ZrO2 thin films deposited at glancing angle by radio frequency magnetron sputtering under varying substrate rotation

RB Tokas, S Jena, JS Misal, KD Rao, SR Polaki… - Thin Solid Films, 2018 - Elsevier
In present work, structural, morphological and optical properties of glancing angle deposited
(GLAD~ 82°) ZrO 2 thin films by RF magnetron sputtering at different substrate rotation (ω) …

Highly photoresponsive and wavelength-selective circularly-polarized-light detector based on metal-oxides hetero-chiral thin film

SH Lee, DP Singh, JH Sung, MH Jo, KC Kwon… - Scientific Reports, 2016 - nature.com
A highly efficient circularly-polarized-light detector with excellent wavelength selectivity is
demonstrated with an elegant and simple microelectronics-compatible way. The circularly …

Experimental investigation of circular Bragg phenomenon for oblique incidence

S Erten, A Lakhtakia, GD Barber - JOSA A, 2015 - opg.optica.org
A 20-period-thick chiral sculptured thin film (STF) of zinc selenide was fabricated on a glass
slide by thermal evaporation. A variable-angle spectroscopic system was devised and used …

Resilience of circular-polarization-state-sensitive reflection against morphological disorder in chiral structures

A Lakhtakia - Journal of Nanophotonics, 2024 - spiedigitallibrary.org
Morphological disorder is commonplace in bioworld structures, as exemplified by the
layered helical structures in the exocuticle in many beetle species. Circular-polarization …