Design of Terahertz Sensor for Glucose Monitoring Based on 2-D Photonic Crystal Pillar Array

Optical biosensors replaces the conventional diagnostic ways as they are compatibly small in size, easy to design and have high sensitive towards the inputs. Photonic crystals are widely discussing and progressively improving type of optical biosensors. They are widely accepted method of bio sensing. It measures the change happen in the refractive index due to change in concentration of analyte. The variation is due to the difference in the molecular interaction. Glucose is one of the primary source of metabolic activities of the living organisms. It is basically a monosaccharide. It is important to maintain the level of glucose in the body. The terahertz waves fall in the region in between infrared and microwaves in electromagnetic spectrum. These waves can be used as source for various types of sensors. These sensors have wide range of application such as biomedical imaging, communication, safety and security, etc. Using 2 dimensional photonic crystal pillar array we have designed a glucose sensor using terahertz waves source. The designed sensor is capable of sensing different concentrations of glucose in blood as well as in glucose solution. The sensor can measure concentration of the analyte up to 120 mg/dL in the sample. THz frequency up to 2.5 THz has used in the study. CST Microwave studio is the platform used for the simulation of the work. The proposed model deals with the development of terahertz glucose sensor for blood glucose monitoring.