Development of a laser induced incandescence high vacuum system for the measurement of soot or nanoparticulate, size, mass and morphology.

人们对大气中的颗粒物负担、这些颗粒物的来源以及可能与健康影响有关的特性有相当大的关注，这是正确的。该项目旨在研究开发一种新型仪器，该仪器具有独特的能力来测量和表征大气气溶胶，特别是其来源，如柴油发动机。新仪器的工作原理是将颗粒吸入真空中，在真空中它们被激光脉冲加热，然后测量它们随后的发光或白炽度。该小组之前的研究已经确定，以这种方式处理的颗粒可以根据其质量、形成颗粒的纳米碳球的形态以及它们的光学特性来表征。这项研究将导致一种名为气溶胶光束激光诱导白炽灯(AB-LII)的新仪器，该仪器将在灵敏度和颗粒表征方面具有独特的能力。然后，该仪器有望用于测量和表征来自各种来源的碳纳米颗粒或烟尘，特别是柴油发动机。该仪器还有可能表征各种其他纳米颗粒，如金属和陶瓷，这些颗粒具有广泛的商业应用。

There is correctly considerable concern about the particulate burden in the atmosphere, the sources of these particulates and there properties since may have been linked to health effects. This project is aimed at undertaking research to develop a new type of instrument which has unique capabilities to measure and characterise atmospheric aerosols and in particular their sources such as diesel engines.The new instrument works by aspirating particles into a vacuum where they are heated by a pulse of laser light and their subsequent glow or incandescence is measured. Previous research by the group has established that particles treated in such a way can be characterised in terms of their mass, their morphology in terms of the nano spheres of carbon which form the particle and their optical properties.This research will lead to a new instrument to be called an aerosol beam laser induced incandescence (AB-LII) system which will have unique capabilities in terms of sensitivity and particle characterisation. The instrument is then expected to be deployed for the measurement and characterisation of carbon nanoparticulates or soot from a variety of sources and especially diesel engines.The instrument also has the potential to characterise a wide variety of other nano particulates such as metals and ceramics which have a wide range of commercial applications.