Gas sensing applications using magnetized cold plasma multilayers

Abstract

In this paper, we theoretically propose a novel magnetic field-dependent sensor using omnidirectional magnetized cold plasma photonic crystal in one dimension for TE polarization. The structure consists of asymmetric two periodic arrays from magnetized cold plasma and sample cavity layer. Between the periodic arrays, a sample cavity is sandwiched between two quartz layers. The methodology of the proposed detector depends on the appearance of a sensitive defect mode. The results clear that the defect mode frequency depends significantly on the refractive index of the sample, and it is extremely sensitive to incident angle changes, applied magnetic field, the number density of electrons, and sample layer thickness. The optimized proposed sensor has high sensitivity of 15.14 GHz/RIU, quality-factor of 527.32, and figure of merit of 1066.20 RIU−1, where RIU means refractive index unit. So, the proposed sensor can aid in solving many challenges in chemical and environmental applications.

Novel smart window using photonic crystal for energy saving

“…Recently, photonic crystals (PCs) are used in different applications such as filters, biosensors, solar cells, etc. [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] . Currently, some advanced spatial smart windows are implemented using the spatial propagation features of traditional PCs 24 .…”

Effective pressure sensor using the parity-time symmetric photonic crystal

“…In the PBGs frequency regions, such optical structures are highly reflective and guide waves on the surface known as Bloch surface waves (BSWs) [11]. Due to the creation of PBGs in 1D-PCs and their dependency on several external and internal physical properties, there are many applications in optical communication and optoelectronic devices like as optical filters [12], optical switches [13], optical logic RECEIVED gates [14,15], optical refractive index sensors [16,17], thermal sensors [18], optical pressure sensors [19,20] and intelligent optical window [21].…”

Studying the impact of interface roughness on a layered photonic crystal as a sensor

“…The concept of PhC was theoretically and experimentally proposed by Yablonovitch [2][3][4] and John [5], respectively. Onedimensional PhC (1D-PhC) is an artificial or natural nanostructure with spatial periodicity in 1D order of a fraction of the incident wavelength [6,7]. PhCs affect the photon properties, similar to semiconductors, which affect the properties of electrons.…”

“…The origins of Photonic band gaps (PBGs) are the structure's periodicity, the constituent materials' nature, and the number of layers in the structure [8]. The pioneering property of PBG of the periodic structures has many applications, such as sensors, filters, switches, photonic crystal waveguides, logic gates, and various optical integrated devices [9][10][11][12][13][14][15][16]. The PhCs are now expanding numerous fields, such as quantum computing, biophotonics, and communications [11,[17][18][19].…”