A label-free photonic crystal based optical gratings for propagation analysis of cancer cells

In this paper, a 2D photonic crystal sensor using gratings has been designed for the analysis of Basal, Breast and Cervical cancer cells. The grating design, incorporated in the photonic crystal waveguide increases the sensitivity of the sensor. As the refractive index of the cancer cells differs from the normal cell, it can be differentiated and detected using optical techniques. The shift in the wavelength and intensity levels in the reflection spectrum has been observed for cancer and normal cells. FDTD method has been used for analyzing cells. MEEP simulation tool has been used for modeling and designing of sensor.