Reacting Flows

UV-photoemission based nanosensors

Measurements

We have developed a method for charging nanoparticles in a flow using UV light, and collecting the current, which is proportional to the surface area of the particles. This allows both direct measurement of the total surface area, and by changing the voltage applied, also a measurement ot the particle size.

Method for charging nanoparticles and collecting total charges in a flow.

Measured current.

Robert T. Nishida, Adam M. Boies, Simone Hochgreb. Measuring ultrafine aerosols by direct photoionization and charge capture in continuous flow. Aerosol Science and Technology, 52:546-556, 2018, https://doi.org/10.1080/02786826.2018.1430350

Last updated on 1 Jan 0001