skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Aerosol mobility imaging for rapid size distribution measurements

Abstract

A parallel plate dimensional electrical mobility separator and laminar flow water condensation provide rapid, mobility-based particle sizing at concentrations typical of the remote atmosphere. Particles are separated spatially within the electrical mobility separator, enlarged through water condensation, and imaged onto a CCD array. The mobility separation distributes particles in accordance with their size. The condensation enlarges size-separated particles by water condensation while they are still within the gap of the mobility drift tube. Once enlarged the particles are illuminated by a laser. At a pre-selected frequency, typically 10 Hz, the position of all of the individual particles illuminated by the laser are captured by CCD camera. This instantly records the particle number concentration at each position. Because the position is directly related to the particle size (or mobility), the particle size spectra is derived from the images recorded by the CCD.

Inventors:
; ; ;
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1264415
Patent Number(s):
9,395,281
Application Number:
14/434,263
Assignee:
BROOKHAVEN SCIENCE ASSOCIATES, LLC (Upton, NY)
DOE Contract Number:  
AC02-98CH10886
Resource Type:
Patent
Resource Relation:
Patent File Date: 2013 Oct 08
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 42 ENGINEERING

Citation Formats

Wang, Jian, Hering, Susanne Vera, Spielman, Steven Russel, and Kuang, Chongai. Aerosol mobility imaging for rapid size distribution measurements. United States: N. p., 2016. Web.
Wang, Jian, Hering, Susanne Vera, Spielman, Steven Russel, & Kuang, Chongai. Aerosol mobility imaging for rapid size distribution measurements. United States.
Wang, Jian, Hering, Susanne Vera, Spielman, Steven Russel, and Kuang, Chongai. 2016. "Aerosol mobility imaging for rapid size distribution measurements". United States. https://www.osti.gov/servlets/purl/1264415.
@article{osti_1264415,
title = {Aerosol mobility imaging for rapid size distribution measurements},
author = {Wang, Jian and Hering, Susanne Vera and Spielman, Steven Russel and Kuang, Chongai},
abstractNote = {A parallel plate dimensional electrical mobility separator and laminar flow water condensation provide rapid, mobility-based particle sizing at concentrations typical of the remote atmosphere. Particles are separated spatially within the electrical mobility separator, enlarged through water condensation, and imaged onto a CCD array. The mobility separation distributes particles in accordance with their size. The condensation enlarges size-separated particles by water condensation while they are still within the gap of the mobility drift tube. Once enlarged the particles are illuminated by a laser. At a pre-selected frequency, typically 10 Hz, the position of all of the individual particles illuminated by the laser are captured by CCD camera. This instantly records the particle number concentration at each position. Because the position is directly related to the particle size (or mobility), the particle size spectra is derived from the images recorded by the CCD.},
doi = {},
url = {https://www.osti.gov/biblio/1264415}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 19 00:00:00 EDT 2016},
month = {Tue Jul 19 00:00:00 EDT 2016}
}

Works referenced in this record:

Aerosol mobility size spectrometer
patent, November 2007


Advanced Laminar Flow water Condensation Technology for Ultrafine Particles
patent-application, March 2012