Improved sensitivity of the photonic crystal slab biosensors by using elliptical air holes

Benmerkhi, Ahlem; Bouchemat, Mohamed; Bouchemat, Touraya

doi:10.1016/j.ijleo.2016.03.057

Cited by 15 publications

(5 citation statements)

References 16 publications

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“…A very high level of sensitivity can be seen through the relationship between the band gap and the refractive index of red blood cells. This design can detect within a few minutes and can increase very high sensitivity (Benmerkhi et al, 2016). 2.…”

Section: Phc For Malaria Detectionmentioning

confidence: 99%

Photonic Crystals based Biosensors in Various Biomolecules Applications

Defvi,

Rahmasari

2023

PhysComm

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Over the past decades, photonic crystals have emerged as interesting photonic structures. It plays a vital role in many fields of optical communication, biomedical sensing, and other applications due to its compactness, high sensitivity, high selectivity, fast responsiveness, etc. Strong light confinement in photonic crystals and adjustment of its geometrical parameters have led to the emergence of photonic crystal biosensors. Biosensors are extensively employed for diagnosing a broad array of diseases and disorders in clinical settings worldwide. Photonics crystal-based biosensor is one of the solutions to detect various diseases. By using literature review method, this paper aims to explore applications of photonic crystal-based biosensors to encounter the sensitivity of various biomolecules for cancer, malaria, and blood components detection.

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Section: Phc For Malaria Detectionmentioning

confidence: 99%

Photonic Crystals based Biosensors in Various Biomolecules Applications

Defvi,

Rahmasari

2023

PhysComm

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“…The thickness of PC slab is critical to its properties, such as band gap [30]- [35], guided mode [31] [33] and Q factor [29] [35]. For optimizing the silicon slab thickness, the hole radius r is kept at 0.38a, and the slab thickness increases from 0.4a to a.…”

Section: Influence Of Silicon Slab Thicknessmentioning

confidence: 99%

“…In this work, the radius of holes and thickness of silicon slab are changed to investigate their influence on the three spectral lines. When the radius of holes[29] [30] or the thickness…”

mentioning

confidence: 99%

A Multi-Parameter Sensor Based on Cascaded Photonic Crystal Cavities Filled with Magnetic Fluid

Zhao¹,

Su²,

Li³

2020

OPJ

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A kind of photonic crystal (PC) micro-cavity sensor based on magnetic fluid (MF) filling is designed with simulation model. Generally, many sensors' designs are based on a universal temperature in the whole structure. However, strong photothermal effect in high Q micro-cavities will lead to different temperatures between cavities and environment inevitably. In many theoretical PC sensor designs, researchers neglected the different temperature between environment and cavities. This simple hypothesis will probably lead to failure of sensor design and get wrong temperature. Moreover, few theoretical or experimental works have been done to study optical cavity's heating process and temperature. We propose that researchers should take seriously about this point. Here, the designed cascaded micro-cavity structure has three spectral lines and a reversible sensitivity matrix, which can simultaneously detect magnetic field, ambient temperature and MF micro-cavity temperature. It can solve the magnetic field and temperature cross-sensitivity problem, and further, distinguish the different temperatures of environment and magnetic fluid cavities. The influence of hole radius and slab thickness on the depth and Q value of the resonant spectral line are also studied. Responses of three dips to magnetic field, ambient temperature and MF micro-cavity temperature are simulated, respectively, where dip 1 belongs to MF cavity 1, dip 2 and dip 3 belong to MF cavity 2. The obtained magnetic field sensitivities are 2.89 pm/Oe, 4.57 pm/Oe, and 5.14 pm/Oe, respectively; the ambient temperature sensitivities are 65.51 pm/K, 50.94 pm/K, and 58.98 pm/K, respectively; and the MF micro-cavity temperature sensitivities are −14.41 pm/K, −17.06 pm/K , and −18.81 pm/K, respectively.

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“…In recent years, a lot of research using photonic crystals as a detection element for sensing was undertaken due their confinement of light and band structure (1). Photonic crystals used as a sensor have seen massive development in case of a rising demand of sensing applications in several fields such as: security, healthcare and environment (2). These photonic crystals are periodic dielectric structures and good candidates to build different components for compact application systems.…”

Section: Introductionmentioning

confidence: 99%

Novel design of optical sensor based on two-dimensional photonic crystals for the detection of volatile organic compounds that can infect human health

Ghoumazi

Hocini²,

Hameurlain

et al. 2019

Mèd Technologies J.

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Background: In recent research, optical sensors gained a growing interest motivated by the increasing need for specific sensors that allow for routine and effective measurements in several fields and analysis such as, safety, environment, and human health. Among optical sensors are photonic crystal sensors, which are characterized by high sensitivity and biocompatibility. The variations inside and around the photonic crystal can give important information by measuring the wavelength, the band gap, the output power…etc. Through defects created in photonic crystals such as missing rows of holes or rods, light is guided through and the goal is to achieve a very high sensitivity and spatial selectivity to changing superior bulk devices. In this study, we model a new structure of an optical channel drop filter (CDF) based on 2-dimensional photonic crystals to detect volatile organic compounds that can infect human health. Objective: Detect the variation of the refractive index by fixing the radius (r) at 99.37nm and the lattice constant (a) at 523nm for various volatile organic compounds such as H2CO, CH2Cl2, and C2Cl4 with refractive indexes that are: 1.3746, 1.421 and 1.503 respectively in the optical sensor based on photonic crystals for reasons related to the protection of human health. Methods: The structure is made of square lattice silicon rods immersed in air. The dielectric constant of silicon and air is 11.9716 and 1 respectively. First, we created a cross shape resonator and designed an optical channel drop filter in the heart of the structure; our method is based on plane wave expansion method (PWE) by using MATLAB software and the finite element method (F.E.M) with COMSOL software. Results: Three volatile compounds have been studied, such as Dichloromethane used as synthesis intermediate by the chemical industry or solvent used in the pharmaceutical or medical industry. Acute inhalation exposure may cause severe optic neuropathy and liver attack (Hepatitis). Then, the Methanal is used to dry or kill the skin taking as an example, the medical treatment of warts. And perchlorethylene is used for the dry cleaning of tissues and for degreasing metals because it is in category 3 carcinogens, toxic to the nervous system and the kidney. These three volatile compounds where introduced and studied in the proposed structure. The results obtained through this study are as follows:1-diagram of the TM and TE bands of the photonic crystal in a square array of silicon rods embedded in the air, 2-schematic diagram of the filter, 3-distribution of the refractive index along the structure, 4-structure meshing, 5-propagation and transmission for different refractive indices such as methanal (H2CO), dichloromethane (CH2Cl2) and perchlorethylene (C2Cl4). Conclusion:In this article, we have been able to simulate, analyze and control our proposed structure with MATLAB and COMSOL software based on the finite element method. The results show that for the three volatile organic compounds, the variation of the signal is due to the ...

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Improved sensitivity of the photonic crystal slab biosensors by using elliptical air holes

Cited by 15 publications

References 16 publications

Photonic Crystals based Biosensors in Various Biomolecules Applications

Photonic Crystals based Biosensors in Various Biomolecules Applications

A Multi-Parameter Sensor Based on Cascaded Photonic Crystal Cavities Filled with Magnetic Fluid

Novel design of optical sensor based on two-dimensional photonic crystals for the detection of volatile organic compounds that can infect human health

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