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:
-
- Oak Ridge, TN
- Creve Coeur, MO
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 909335
- Patent Number(s):
- 7213476
- Application Number:
- 11/240,161
- Assignee:
- UT-Battelle, LLC (Oak Ridge, TN)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- 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. https://www.osti.gov/servlets/purl/909335.
@article{osti_909335,
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 = {2007},
month = {5}
}
Works referenced in this record:
Design and evaluation of a nanometer aerosol differential mobility analyzer (Nano-DMA)
journal, June 1998
- Chen, D.-R.; Pui, D. Y. H.; Hummes, D.
- Journal of Aerosol Science, Vol. 29, Issue 5-6, p. 497-509
A differential mobility analyzer with adjustable column length for wide particle-size-range measurements
journal, November 2002
- Seol, Kwang Soo; Yabumoto, Junsuke; Takeuchi, Kazuo
- Journal of Aerosol Science, Vol. 33, Issue 11