In this paper, a biosensor based on a two-dimensional photonic crystal is simulated based on refractive index changes to detect malaria in red blood cells. Since early detection of malaria plays an essential role in its treatment, this proposed design is accurate and sensitive. Because early detection of malaria plays an essential role in its treatment, the proposed design distinguishes between normal red blood cells and malaria-infected cells with high accuracy and sensitivity. This biosensor is very compact and consists of gold rods in the air wafer that operate at a visible wavelength of 514 nm. This structure is simulated using the Plane wave expansion (PWE) method to calculate the photonic band gap by OPTIFDTD software. Changes in the photonic band gap to the refractive index changes show that these changes are well linear and the photonic band gap decreases with increasing refractive index, which is a sign of sensitivity.
 

Keywords: Biosensor, Photonic crystal, Malaria, Plane wave expansion method(PWE)

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