Graphene is an ideal material for sensors. Such sensors may be used in healthcare, infrastructure and more.
“What characteristics might make up an ideal base sensing material? Many believe one of the pre-requisites is surface to volume ratio – how much of the material’s mass is available to be exposed to the desired sensing area. The consensus seems to be thinner is better.
How about conductivity? Once the signal is sensed, at what speed can that signal be completely transmitted? Then, it would be preferred if this base sensing material were also strong, flexible, transparent, a barrier material and available in abundance.
Only a decade ago, the opportunity to discover such a material that fits this description might have sounded like a pipe-dream or been something of a leap too far into the future. However, this future is now here, with a material proven to work and currently being designed and tested for many advanced sensing applications.
The base sensing material in question is pure carbon in the form of monolayer graphene and the science for graphene sensors is well advanced. Only engineering work remains for this material to be applied to many micro sensing schemas across industry.
Graphene is an ideal material for sensors. Every atom in graphene is exposed to its environment allowing it to sense changes in its surroundings. For chemical sensors, the goal is to be able to detect just one molecule of a potentially dangerous or indicative substance. Graphene now allows for the creation of micrometer-size sensors capable of detecting individual events on a molecular level”. University of Manchester website, “Graphene, Learn, Applications, Sensors”
Another useful application for graphene sensors in the field of life science is currently in the design phase. This includes the continuous detection and monitoring of blood pressure by wearing a watch or wrist band while it transmits systole, diastole, and pulse, real-time to a central database capture program at the doctor’s office using an application via the patient’s smartphone or other device. Thus, with minimal disruption using a virtually connected ‘Fitbit’-type device, one can monitor and send continuous blood pressure readings autonomously.”
Source: AZO Sensors