A review of methodologies to measure the bipolar charge distribution of nanoparticles is
completed, including their advantages/disadvantages and sequential development. This …

This work provides a theoretical and non-dimensional numerical analysis of the dynamics of
gas-borne unipolar charged particles flowing through a cylindrical tube at high number …

Low-cost methods for measuring airborne microparticles and nanoparticles (aerosols) have
remained elusive despite the increasing concern of health impacts from ambient, urban, and …

The enforcement of more stringent type approval emission standards de facto mandate
manufacturers to equip vehicles with particle filters, which reduces the particle number …

New emission legislation requires number concentration measurements of particles emitted
by passenger cars during periodic technical inspections (PTI). For PTI suitable instruments …

Diffusion charging followed by particle capture and measurement is a promising method for
determining particle number concentration of automotive exhaust. In addition, the method …

Understanding formation, growth and transport of aerosols is critical to processes ranging
from cloud formation to disease transmission. In this work, a numerical algorithm of aerosol …

Pollution by particulate matter (PM) poses a serious and growing risk to human health. Film
Bulk Acoustic Resonators (FBARs) have been proposed as a low-cost way to monitor …

Particle mass analyzers (PMAs) classify particles by their mass-to-charge ratio. PMAs are
often paired with bipolar chargers, which produce charge distributions that consist of …

Direct ultraviolet photoionization electrically charges particles using a mechanism distinct
from diffusion charging. The purpose of this study is to evaluate aerosol photoemission …