Medical Diagnosis with Nanotechnology

Innovation in medicine and healthcare is being fuelled by nanotechnology. The range of nanotechnical advances includes nanoscale therapeutics, biosensors, implantable devices, drug delivery systems, and imaging technologies.


The detection of pathogens at the point-of-care (POC) is a major challenge of modern medicine, particularly in underprivileged areas. For preventing disease outbreaks and preserving public health, the early detection of foodborne pathogenic bacteria is critical. The currently available detection techniques such as ISO method 6579, enzyme-linked immunosorbent assay (ELISA), fluorescent-antibody (FA), or polymerase chain reaction (PCR) are cumbersome, time-consuming, and have limited sensitivity. They lack the ability to detect bacteria in real time, hence making them inadequate.

This is where nanotechnology can come into the picture and provide advancement in the diagnosis area. Here’s how:

  • By enabling wireless monitoring of various biomedical events, a graphene-based wireless sensor has the ability to make 24-hour healthcare easier to achieve in order to gain a more comprehensive assessment of the wearer’s healthcare status.
  • Nanoparticles can selectively attach themselves to any number of food pathogens.
  • Handheld sensors could then note the presence of even minuscule traces of harmful pathogens by employing either infrared light or magnetic materials.

Hundreds and potentially thousands of nanoparticles can be placed on a single nanosensor by implementing such a system to rapidly, accurately and affordably detect the presence of any number of different bacteria and pathogens. Given their small size, nanosensors can gain access into the tiny crevices where the pathogens often hide.

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