A Caltech Library Service

Radial opposed migration aerosol classifier with grounded aerosol entrance and exit

Flagan, Richard C. and Mui, Wilton and Downard, Andrew J. (2015) Radial opposed migration aerosol classifier with grounded aerosol entrance and exit. Patent number: US 9,095,793.

[img] PDF (Patent no.: US9095793B2) - Published Version
See Usage Policy.

[img] PDF (Application US20130213861A1) - Published Version
See Usage Policy.


Use this Persistent URL to link to this item:


A radial opposed migration classifier is provided for separating particles in a sample, introducing and removing the particles into and out of the classifier at the same potential. A sample passes through a classification channel having two circular walls. The sample is introduced and exits the classifier through the same plane as the first wall, which is at a different potential from the second wall. A cross-flow fluid enters the classification channel through one of the walls. The cross-flow fluid flows at a first velocity and exits in a first direction through the other wall. An imposed field is applied on the particles in a second direction counter to the first direction of the cross-flow. This causes the particles of a desired size and/or charge to migrate at a second velocity opposite and/or equal to a first velocity of the cross-flow. The particles that travel through the channel are discharged.

Item Type:Patent
Related Patents:US20130213861A1, WO2013123436A1
Patent Classification:Current CPC Class: B03C 1/30 (20130101); B03C 3/017 (20130101); B03C 3/14 (20130101); B03C 3/15 (20130101); B01D 21/00 (20130101); G01N 15/0266 (20130101). Current International Class: B07B 7/04 (20060101); G01N 15/02 (20060101); B03C 3/15 (20060101); B03C 3/14 (20060101); B03C 3/017 (20060101); B03C 1/30 (20060101); B01D 21/00 (20060101).
Patent Assignee:California Institute of Technology
Related URLs:
URLURL TypeDescription Patents site Patent Office (European Patent Office)
Flagan, Richard C.0000-0001-5690-770X
Mui, Wilton0000-0003-3065-1296
Additional Information:Publication number US 9,095,793. Publication type Grant. Application number US20130213861A1. Publication date Aug 4, 2015. Application publication date Oct 13, 2011. Filing date Feb 15, 2013. Priority date Feb 17, 2012. Also published as: US2013213861(A1), WO2013123436(A1). Parent Case Text: CROSS-REFERENCE TO RELATED APPLICATIONS This application claims the benefit under 35 U.S.C. Section 119(e) of the following co-pending and commonly-assigned U.S. provisional patent application, which is incorporated by reference herein: Provisional Application Ser. No. 61/600,409, filed on Feb. 17, 2012, by Richard C. Flagan et al., entitled "RADIAL OPPOSED MIGRATION AEROSOL CLASSIFIER WITH GROUNDED AEROSOL ENTRANCE AND EXIT." This application is also related to the following commonly-assigned patent and patent applications, which are incorporated by reference herein: U.S. Pat. No. 6,905,029, issued on Jun. 14, 2005, by Richard C. Flagan, entitled "CROSS-FLOW DIFFERENTIAL MIGRATION CLASSIFIER;" and U.S. patent application Ser. No. 13/768,817, filed on Feb. 15, 2013, by Richard C. Flagan et al., entitled "OPPOSED MIGRATION AEROSOL CLASSIFIER GAS AND HEAT EXCHANGER," which claims priority to Provisional Application Ser. No. 61/600,434, filed on Feb. 17, 2012, by Richard C. Flagan et al., entitled "OPPOSED MIGRATION AEROSOL CLASSIFER GAS AND HEAT EXCHANGER."
Record Number:CaltechAUTHORS:20150910-090907037
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:60167
Deposited By: Irina Meininger
Deposited On:02 Dec 2015 19:36
Last Modified:03 Oct 2019 08:54

Repository Staff Only: item control page