a new generation of ultraviolet light sensors

The technology developed by UVdyne is ideal for the advancement of a new generation of ultraviolet (UV) light sensor with potential applications in a number of technological and industrial sectors.

There is a growing untapped demand in many industrial sectors for devices able to detect UV radiation. The UV range of the electromagnetic spectrum has so far been underexploited by commercial applications due a lack of diversification in the available technologies.

Quality control, health and diagnostics, safety and security, monitoring and imaging, and defence are just some of the potential market segments where the introduction of  breakthrough UV sensor technology is highly sought after.

At UVdyne we believe that we have solutions to a number of technological limitations that are inherent to competing engineering and industrial applications.

Gaseous Micropattern Light sensor

Albert Einstein was awarded his Nobel Prize for the explanation of photoemission, whereby electrons are knocked out of solids by incoming light (photons). Our technology exploits photoemission to turn incoming photons of UV light into bursts of electrical current. A carefully controlled photocathode surface allows only UV light below a certain threshold wavelength to knock out an electron.

This electron is sucked back through a channel in the photocathode by a bias voltage. As it passes down the channel it ionises gas atoms, causing more electrons to be liberated. The total amount of electrical current is proportional to the number of UV photons below the wavelength threshold striking the photocathode.

The area of the photocathode and number of channels can be scaled indefinitely; temperature and magnetic fields have only a tiny effect on photoemission and charge multiplication; only the local geometry of the channels is important; there are no moving parts and only one simple bias voltage; and the surrounding gas can be at or above atmospheric pressure. This is the basis of a family of scalable, robust and sensitive detectors.



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