Sensitivity enhancement of annular one dimensional photonic crystals temperature sensors with nematic liquid crystals

2020 ◽  
Vol 95 (8) ◽  
pp. 085508 ◽  
Author(s):  
Mazen M Abadla ◽  
Hussein A Elsayed ◽  
Ahmed Mehaney
Keyword(s):  
Liquid Crystals ◽  
Photonic Crystals ◽  
Nematic Liquid Crystals ◽  
Sensitivity Enhancement ◽  
Temperature Sensors ◽  
One Dimensional

Switchable Photonic Crystals Using One-Dimensional Confined Liquid Crystals for Photonic Device Application

2017 ◽  
Vol 9 (3) ◽  
pp. 3186-3191 ◽  
Author(s):  
Seong Ho Ryu ◽  
Min-Jun Gim ◽  
Wonsuk Lee ◽  
Suk-Won Choi ◽  
Dong Ki Yoon
Keyword(s):  
Liquid Crystals ◽  
Photonic Crystals ◽  
One Dimensional ◽  
Photonic Device ◽  
Device Application ◽  
Confined Liquid Crystals

scholarly journals Robust adaptive computation of a one-dimensional Q-tensor model of nematic liquid crystals

2012 ◽  
Vol 64 (11) ◽  
pp. 3627-3640 ◽  
Author(s):  
Craig S. MacDonald ◽  
John A. Mackenzie ◽  
Alison Ramage ◽  
Christopher J.P. Newton
Keyword(s):  
Liquid Crystals ◽  
Nematic Liquid Crystals ◽  
Tensor Model ◽  
One Dimensional ◽  
Adaptive Computation ◽  
Robust Adaptive

Tunable and programmable topological valley transport in photonic crystals with liquid crystals

2022 ◽  
Author(s):  
Yulin Zhao ◽  
Feng Liang ◽  
Xiangru Wang ◽  
Deshuang Zhao ◽  
Bing-Zhong Wang
Keyword(s):  
Wave Propagation ◽  
Liquid Crystals ◽  
Photonic Crystals ◽  
Symmetry Breaking ◽  
Relative Permittivity ◽  
Nematic Liquid Crystals ◽  
Inversion Symmetry ◽  
Edge States ◽  
Beam Splitting ◽  
Topological Transition

Abstract Topological valley transport in photonic crystals (PCs) has attracted great attention owing to its edge modes immune to backscattering. However, flexibly dynamically controlling and reconfiguring the pathway of the topological one-way propagation is still challenging. Here, we propose a tunable and programmable valley PC structure based on nematic liquid crystals (LCs). Inversion symmetry breaking and topological transition are implemented through controlling the relative permittivity of the LC cells. Topological protection of valley edge states and valley-locked beam splitting are demonstrated. Moreover, the LC-based PC can be discretized to a number of supercells, each of which can be coded with “0” or “1”. The wave propagation pathway can be dynamically reconfigured by programming different coding patterns.

Analysis of Temperature Sensors Based on Ternary One Dimensional Photonic Crystals with Double Defects

2019 ◽  
Vol 14 (11) ◽  
pp. 1532-1538 ◽  
Author(s):  
S. E.-S. Abd El-Ghany
Keyword(s):  
Photonic Crystals ◽  
Transfer Matrix Method ◽  
Matrix Method ◽  
Electromagnetic Waves ◽  
Photonic Band Gap ◽  
Temperature Sensors ◽  
Temperature Dependent ◽  
One Dimensional ◽  
Uv Visible ◽  
Photonic Band

Based on the transfer matrix method (TMM), the interaction of electromagnetic waves in ultraviolet (Uv), visible and Infrared (IR) spectra with ternary one-dimensional photonic crystals with different double defects, has been theoretically studied. The multilayer system has been taken as temperature dependent. The numerical results showed that the number of photonic band gap (PBG) was increased by increasing the degree of temperature. The variation of temperature, the thickness of the second layer and both the type and the thickness of the second defect caused shifting of the photonic ban gaps to higher wavelengths which can be exploited in the design of temperature sensors.

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