Dr Demokritou’s research interests are primarily in the areas of aerosol science and technology and indoor environmental quality. His current research activities focus on the development of human exposure measurement techniques and the investigation of sources, transport, and the fate of air pollutants in the built environment.

Aerosol Technology Laboratory: Aerosols are two-phase systems consisting of small (less than 100 ìm) solid or liquid particles suspended in a gas. They are important in a variety of disciplines and applications, including contamination control in microelectronics manufacturing, air pollution, gas cleaning, industrial hygiene, respiratory protection devices, and atmospheric sciences.

The Aerosol Technology Laboratory which is under the supervision of Professor Demokritou is fully equipped with systems for the: generation of artificial monodisperse and polydisperse particles, as well as state of the art instrumentation for the real time measurement of the physico-chemical properties of particles from 20 nm to 20 ìm. Activities of the laboratory include the design of particle-classification techniques such as impactors and speciation samplers and, performance evaluation of air sampling techniques. More than a dozen instruments and methods including a US patented method have been developed over the last few years in this laboratory, for the physico-chemical, toxicological and biological characterization of aerosols These novel techniques have been used extensively by air pollution scientists and human exposure assessors in United States and worldwide. Recent research activities include:

• Physico-chemical, toxicological and biological properties of particles.
• Filtration and air contamination control studies
• Inertial impaction of particles.
• Aerosol generation techniques for in vitro and in-vivo toxicological studies and Human Health Effects.
• Indoor Environmental Quality (IEQ) studies, including indoor air quality characterization studies in a variety of microenvironmnetal settings, development of advanced numerical modeling using Computational Fluid Dynamics (CFD) to investigate transport and fade of air pollutants in the built environment