Design of a sheathed water condensation particle counter with variable saturation ratio

Article Engineering, Chemical

High resolution characterization of a sheathed axisymmetric variable supersaturation condensation particle sizer

Michel Attoui et al.

Summary: By conducting experiments with diffusive condensation particle counters (CPCs) using uniform polyethylene glycol particles, it was found that the performance of the Variable Supersaturation Condensation Particle Sizer (VSCPS) is better than anticipated. This instrument is suitable for high resolution particle sizing and basic heterogeneous nucleation studies.

JOURNAL OF AEROSOL SCIENCE (2023)

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Article Engineering, Chemical

Detection of sub-5nm naturally charged carbonaceous materials from a sooting laminar premixed flame by a water condensation Particle Counter (WCPC) enhanced by a Di-Ethylene Glycol (DEG) saturator inlet

Farnaz Khosravi et al.

Summary: Combustion is a major cause of air pollution, and CPCs are effective in monitoring atmospheric aerosols. This study characterizes a water-based WCPC prototype that can detect charged carbonaceous materials produced by flames. The addition of a DEG saturator inlet enhances the detection efficiency. The coupling of the DEG saturator inlet to the WCPC creates a new DEG-WCPC instrument that can detect sub-5nm aerosols at a relatively low cost and small size.

AEROSOL SCIENCE AND TECHNOLOGY (2023)

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Article Chemistry, Physical

Heterogeneous nucleation measurements in a sheathed planar diffusive condensation particle counter

Derek Kuldinow et al.

Summary: This study aims to measure the activation probability of Tetraheptylammonium Bromide cluster cations under different conditions, showing a sharp increase in activation probability with increasing size and temperature of purified salt clusters. The results suggest that basic heterogeneous nucleation measurements can be carried out, but further instrument improvements are needed for more accuracy.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2022)

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Article Engineering, Chemical

Cluster activation studies with a diffusive condensation particle counter: Effect of chemical composition

Derek Kuldinow et al.

Summary: This study uses KanomaxFMT's Fast Condensation Particle Counter (CPC) to investigate the growth of purified singly charged cluster ions of several salts through condensation of n-butanol vapor. The study finds that the activation probability of these ions depends on the interaction potential between the clusters and the vapor.

JOURNAL OF AEROSOL SCIENCE (2022)

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Article Chemistry, Physical