Bionsensors could be made more sensitive with a new nanostructure developed at Northwestern University.
Biosensors convert a biological response into an optical or electrical signal and can be used to sense anomalies such as toxic chemicals and particles in the air, or enzymes, molecules, and antibodies in the body that could indicate diabetes, cancer, and other diseases.
According to Northwestern, an optical biosensor works by absorbing a specific bandwidth of light and shifting the spectrum when it senses minor changes in the environment. The narrower the band of absorbed light is, the more sensitive the biosensor.
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