ROLE OF TECHNOLOGY IN CORONAVIRUS DETECTION

The number of coronavirus cases, the testing of suspected carriers means that nations are widely relying on traditional technology based on PCR (polymer chain reaction). Certain alternative approaches are found out by scientists all over the world to reduce pressure on the current testing methods.is being intensified also. The mass expansion of As many nations across the world are dealing with increasing technique

NANOPHOTONIC BIOSENSOR:

European scientist developed an ultrasensitive “NANOPHOTONIC BIOSENSOR” which detects the virus from saliva /nasal swab in minutes.

These devices or sensors consist of certain miniaturised chips which detect the virus antigens from a simple nasal or saliva swab.

From sample preparation to diagnosis, it takes approximately 30 minutes. These nanosensors are capable of detecting RN strands which detect the new coronavirus.

The detector works by binding the coronavirus molecules to the sensor surface producing a new signal when the virus is present. The bio-receptors on sensor surface are specific to a particular antigen of the virus, only coronavirus molecules are captured along the sensor. The sensor surface contains certain receptors. Light travelling in sensor generates an evanescent field of few nanometers over the sensor surface. The receptors can recognise the antigen of the virus when the fluid sample is passed through. Once it is identified the recognition event produces a change in the refractive index of light. This change is measured and determined precisely with the set of existing values thus help in quick detection of the disease.

SHREYA PAUL.

DEPARTMENT-CHEMICAL ENGINEERING.

3^RD YEAR

ROLL-1755062.

Image source: ScienceDirect