An Improved Optical Biosensor design using defect/metal multilayer photonic crystal for Malaria Diagnosis

Ankita, .; Bissa, Shivangi; Suthar, Bhuvneshwer; Nayak, Chittaranjan; Bhargava, A.

doi:10.1016/j.rio.2022.100304

Cited by 31 publications

(6 citation statements)

References 22 publications

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“…These PCs are periodic structures made of two dielectric media having a larger refractive index contrast as compared to other optical components, thus enabling photonic bandgaps (PBGs) as prohibited frequency/ wavelength bands that are similar to the energy bands obtained in the case of electronic waves through periodic potential of ions in the solid crystal [5]. PCs are generally made of dielectric media, but other materials like metals, chalcogenide, semiconductors and gyroidal graphene were also introduced in place of dielectrics as reported by several workers [6][7][8][9][10][11][12][13]. With the introduction of new dispersive and smart materials like plasma, magnetized cold plasma, graphene, superconductor, liquid crystal and metamaterial, the field of PC research finds applications in diverse fields of science and technology [14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Analysis of a gas sensor based on one-dimensional photonic crystal structure with a designed defect cavity

et al. 2023

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A symmetric one-dimensional photonic crystal configuration with defect layer is proposed for an optical gas sensor based device application. Here, Silicon and Si3N4 are considered as materials of dielectric layers with zero value of extinction coefficient in the wavelength range of concern. The transmission of PC configuration is estimated using the transfer matrix approach in case of configuration with and without defect, and the infiltrated gas is treated as defect layer. On the basis of the defect mode’s wavelength, gas can be determined. In addition, quality factor and sensitivity of the device are improved due to the variation of refractive index of layer B, thickness of defect, angle of incidence and the number of unit cells on either side of defect layer. By making analysis of the effect of these parameters on the sensitivity and quality factor, interesting results have been obtained and conclusions drawn. We have also proposed and investigated a symmetric structure with defect made with a single material to improve optical sensing parameters. Further for the sake of comparison, the various gases are used to show improved sensing characteristics for respective gases, which can be used to determine gas. It is inferred that such refractive index optical sensor based on defect mode position is highly sensitive and offers precise optical sensing characteristics and possibly find applications in gas detection.

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Section: Introductionmentioning

confidence: 99%

Analysis of a gas sensor based on one-dimensional photonic crystal structure with a designed defect cavity

et al. 2023

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“…The sensitivity of the optical sensor was then improved using graded PC and later study introduced a metal layer on both sides of the defect layer. As a result of surface plasmon resonance, the sensitivity was increased up to 1114 nm/RIU 24 . Gharsallah et al 25 .…”

Section: Introductionmentioning

confidence: 99%

“…As a result of surface plasmon resonance, the sensitivity was increased up to 1114 nm∕RIU. 24 Gharsallah et al 25 reported slow light to enhance biosensing characteristic based on PC structure and achieved sensitivity up to 650 nm∕RIU. Dinodiya et al 26 investigated hemoglobin concentration in blood using 1D PC structure with defect layer and achieved sensitivity as 439 nm∕RIU.…”

Section: Introductionmentioning

confidence: 99%

Design and analysis of optical biosensor based on symmetric and asymmetric structured one-dimensional photonic crystal for tuberculosis detection

Suthar¹,

Bhargava

Bhargava³

2023

Opt. Eng.

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We looked into three distinct topologies, using a one-dimensional photonic crystal with a defect layer in two symmetrical and one asymmetrical configurations as an optical biosensor application for detection in tuberculosis (TB). In order to investigate the optical transmission characteristics of such structures, we used a well-known transfer matrix approach. A shift in resonant peak is estimated, when blood of healthy or TB infected human is infiltrated in defect layer. The impact of several parameters, including the thickness of the defect layer, the number of unit cells, and the angle of incidence for all three configurations, has been studied. The sensitivity, quality factor, figure of merit, and detection limit for all structures have been studied and it is found that asymmetric structure is the best suitable structure for optical sensor application in the present case.

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“…Such PBG is responsible for many potential applications of PCs as optical filter, optical sensor, switch etc. [2][3][4][5][6][7]. As per the periodicity of dielectric in space, PCs are classified in three different kinds as one-dimensional (1-D) PC [8], twodimensional (2-D) PC [9] and three-dimensional (3-D) PC [1].…”

Section: Introductionmentioning

confidence: 99%

Study transmission characteristics of graded photonic crystal as low pass filter

Ankita,

Suthar,

Bissa

et al. 2023

J. Phys.: Conf. Ser.

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Here, we investigate propagation characteristics of graded thickness one-dimensional photonic crystal structure made of silicon and air. The optical transmission is obtained by transfer matrix method (TMM) and studied impact of graded index and refractive index variation on the transmission spectra. The optical transmission of suggested structure drops as frequency increases and falls to zero more rapidly as graded index increases. The graded index variable can be used to tune the suggested structure’s cut off frequency, which corresponds to half of the transmission value. So, such device has useful application as tunable optical low-pass filter.

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An Improved Optical Biosensor design using defect/metal multilayer photonic crystal for Malaria Diagnosis

Cited by 31 publications

References 22 publications

Analysis of a gas sensor based on one-dimensional photonic crystal structure with a designed defect cavity

Analysis of a gas sensor based on one-dimensional photonic crystal structure with a designed defect cavity

Design and analysis of optical biosensor based on symmetric and asymmetric structured one-dimensional photonic crystal for tuberculosis detection

Study transmission characteristics of graded photonic crystal as low pass filter

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