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Title: Stackable differential mobility analyzer for aerosol measurement

Abstract

A multi-stage differential mobility analyzer (MDMA) for aerosol measurements includes a first electrode or grid including at least one inlet or injection slit for receiving an aerosol including charged particles for analysis. A second electrode or grid is spaced apart from the first electrode. The second electrode has at least one sampling outlet disposed at a plurality different distances along its length. A volume between the first and the second electrode or grid between the inlet or injection slit and a distal one of the plurality of sampling outlets forms a classifying region, the first and second electrodes for charging to suitable potentials to create an electric field within the classifying region. At least one inlet or injection slit in the second electrode receives a sheath gas flow into an upstream end of the classifying region, wherein each sampling outlet functions as an independent DMA stage and classifies different size ranges of charged particles based on electric mobility simultaneously.

Inventors:
 [1];  [2]
  1. Oak Ridge, TN
  2. Creve Coeur, MO
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
Sponsoring Org.:
USDOE
OSTI Identifier:
909266
Patent Number(s):
7,213,476
Application Number:
11/240,161
Assignee:
UT-Battelle, LLC (Oak Ridge, TN) ORO
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Cheng, Meng-Dawn, and Chen, Da-Ren. Stackable differential mobility analyzer for aerosol measurement. United States: N. p., 2007. Web.
Cheng, Meng-Dawn, & Chen, Da-Ren. Stackable differential mobility analyzer for aerosol measurement. United States.
Cheng, Meng-Dawn, and Chen, Da-Ren. Tue . "Stackable differential mobility analyzer for aerosol measurement". United States. doi:. https://www.osti.gov/servlets/purl/909266.
@article{osti_909266,
title = {Stackable differential mobility analyzer for aerosol measurement},
author = {Cheng, Meng-Dawn and Chen, Da-Ren},
abstractNote = {A multi-stage differential mobility analyzer (MDMA) for aerosol measurements includes a first electrode or grid including at least one inlet or injection slit for receiving an aerosol including charged particles for analysis. A second electrode or grid is spaced apart from the first electrode. The second electrode has at least one sampling outlet disposed at a plurality different distances along its length. A volume between the first and the second electrode or grid between the inlet or injection slit and a distal one of the plurality of sampling outlets forms a classifying region, the first and second electrodes for charging to suitable potentials to create an electric field within the classifying region. At least one inlet or injection slit in the second electrode receives a sheath gas flow into an upstream end of the classifying region, wherein each sampling outlet functions as an independent DMA stage and classifies different size ranges of charged particles based on electric mobility simultaneously.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue May 08 00:00:00 EDT 2007},
month = {Tue May 08 00:00:00 EDT 2007}
}

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