Thermo-optical properties of binary one dimensional annular photonic crystal including temperature dependent constituents

Detection of isoprene traces in exhaled breath by using photonic crystals as a biomarker for chronic liver fibrosis disease

“…), where, is the dip wavelength, is the air cavity refractive index ( here = 1.00026 for the dry exhaled breath) and is the thickness of the air cavity layer [17]. [13,16].…”

“…The propagation of EM waves through periodic structures is manipulated by using the transfer matrix method (TMM) [15]. TMM is considered an accurate method in studying and manipulating the propagation of various types of waves through the 1D periodic lattices [15][16][17]. The TMM is completely dependent on Maxwell's equations and their solution through each layer (j) or repeated unit cells of the lattice constant (a).…”

“…, the subscripts 0 and S refer to the incidence (prism) and substrate (air) media, respectively. Finally, the reflectance (R) of the incident EM waves on the 1D PC design can be investigated as follows [17,27]…”

“…PCs are periodic structures in 1D, 2D, or 3D designs that able to control the propagation of electromagnetic waves (E.M waves) within ranges of frequencies called photonic band gaps (PnBG). The formation of PnBG due to the refractive index contrast between the constituent materials [17][18][19]. Making a cavity inside the periodic design of PCs leads to the generation of local resonance modes that were used in gas or liquid sensor applications.…”

Towards a highly efficient air purifier using annular photonic crystals in UV regimes

“…[25][26][27] One of the classes of one-dimensional PCs is annular photonic crystals (APCs), also called cylindrical Bragg reectors or photonic circular crystals. 28,29 APCs are periodic concentric cylindrical multilayer structures. APCs attracted attention since Kaliteevski et al untiles the transfer matrix method in the cylindrical coordinates to describe the eclectic and magnetic elds inside coaxial layers.…”