Researchers have developed a glucose-sensing contact lens as a noninvasive alternative to traditional glucose monitoring with blood tests.
Glucose is a good target for optical sensing using surface-enhanced Raman spectroscopy, according to the study published in Advanced Materials.
Researchers used multiple layers of gold nanowire stacked on top of a gold film to make the tiny device. Standard nanofabrication techniques rely on a hard surface, like glass or a silicon wafer, but researchers needed a flexible nanostructure that would be more suitable for a wearable. The layered nanowire structure was made on a hard substrate and then lifted off and printed on a contact.
