CONTROLLED SURFACE LOCALIZED PLASMON RESONANCE IN LIQUID CRYSTAL - SILVER NANOPARTICLE COLLOID
A.R. Imamaliyev1, G.F. Ganizade1, Z.I. Budagov2, G.M. Muradova1,
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ABSTRACT

This work investigates localized surface plasmon resonance (LSPR) in a colloid consisting of silver particles with a size of 80–100 nm and a liquid crystal with negative dielectric anisotropy. For a 50 μm thickness cell of and homotropic orientation, the SPR absorption peak is in the red region of the spectrum
(678 nm). Using an electric field, it is possible to shift the peak toward the long-wave side. For example, when 9 V is applied to the cell, the maximum absorption peak occurs at 698 V. The shift of the LPPR peak is explained by the rotation of liquid crystal molecules around silver particles under the action of an electric field.

Keywords: liquid crystal, silver nanoparticle, plasmon resonance, UV-visible spectrum, dielectric permittivity
DOI:10.70784/azip.2.2025333

Received: 29.09.2025
Internet publishing: 06.10.2025    AJP Fizika A 2025 03 az p.33-37

AUTHORS & AFFILIATIONS

1. Institute of Physics Ministry of Science and Education Republic of Azerbaijan, 131 H.Javid ave, Baku, AZ-1073, Azerbaijan
2. Azerbaijan-French University under the Azerbaijan State Oil and Industry University 183 Nizami St., Baku
E-mail: Rahimoglu1960@gmail/com

Graphics and Images

       

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