Abstract
The reflection and transmission coefficients of an indium tin oxide (ITO) nanoribbon grating placed between a nematic liquid crystal (LC) layer and an isotropic dielectric medium are calculated in the infrared region. Reflection and transmission spectra in the range of 1–5 μm related to the surface plasmon excitation in the ITO nanoribbons are obtained. Dependence of the peak spectral position on the grating spacing, the ribbon aspect ratio, and the 2D electron concentration in the nanoribbons is studied. It is shown that director reorientation in the LC layer influences the plasmon spectra of the grating, enabling a control of both the reflection and transmission of the system. The data obtained with our model are compared to the results obtained using COMSOL software, giving the similar results.
Highlights
Surface plasmons (SPs) can be excited in the gratings comprising metallic or semiconductor ribbons by an electromagnetic wave with a wavelength much larger than the ribbon size
Nanoribbon grating on its reflection, and transmission spectra in the IR region, λ = 1–5 μm, where the efficient excitation of SPs was observed in the thin Indium tin oxide (ITO) films [18,19,20]
2a,b, we present the reflection and transmission spectra of the nanoribbon grating
Summary
Surface plasmons (SPs) can be excited in the gratings comprising metallic or semiconductor ribbons by an electromagnetic wave with a wavelength much larger than the ribbon size. We theoretically study the influence of parameters of the ITO nanoribbon grating on its reflection, and transmission spectra in the IR region, λ = 1–5 μm, where the efficient excitation of SPs was observed in the thin ITO films [18,19,20]. We suggest that LCs in combination with plasmon nanostructures data obtained in the model of the infinitely thin grating are compared with the results obtained using can be used for sensory applications. The paper is organized as follows: Section 2 introduces a model of the ITO-grating structure with the infinitely thin grating are compared with the results obtained using COMSOL software. The paper is organized as follows: Section 2 introduces a model of the ITO-grating structure with transmission coefficients of the system.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
