James River Water Levels

Westham Gauge
Gauge Height: 3.95'
Flow: 2040 cfps

Trail Conditions: Richmond

@rvatrailreport

Todays Tides: Richmond Locks

High Tide: 12:42am
Low Tide: 7:42pm

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Night-vision contact lenses?

Credit: aetb/Thinkstock

Credit: aetb/Thinkstock

In 2010, two British scientists were awarded the Nobel Prize in physics for their discovery of a carbon material called graphene. Since then, the unbelievably strong, light, and temperature-conductive material has been tested for use in everything from electronic screens to the human body. A University of Michigan study is now using the optical capabilities of graphene to create an infrared contact lens.

Graphene can detect the entire infrared spectrum, as well as visible and ultraviolet light. However, because the material is as thin as a single atom, it absorbs only two percent of that light. That minuscule amount of absorption is not enough to generate an electric signal, which means graphene cannot operate as an infrared sensor on its own.

To combat these restrictive properties, the University of Michigan researchers placed an insulator between two sheets of graphene. Creating an electric field through what they call a quantum tunneling effect, this system actually contains the same sensitivity as a mid-infrared detector.  The researchers have since been able to put this technology into something the size of penny—or a contact lens.

Although infrared technology makes most people think of night vision and military uses, it has medical applications as well, such as allowing doctors to see blood flow. The outdoor industry hasn’t skipped a beat either: Graphene is starting to be used in skis.


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