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Title: Method for producing high dielectric strength microvalves

Abstract

A microvalve having a cast-in-place and lithographically shaped mobile, polymer monolith for fluid flow control in microfluidic devices and method of manufacture. The microvalve contains a porous fluorinated polymer monolithic element whose pores are filled with an electrically insulating, high dielectric strength fluid, typically a perfluorinated liquid. This combination provides a microvalve that combines high dielectric strength with extremely low electrical conductivity. These microvalves have been shown to have resistivities of at least 100 G.OMEGA. and are compatible with solvents such as water at a pH between 2.7 and 9.0, 1-1 propanol, acetonitrile, and acetone.

Inventors:
 [1];  [2];  [3]
  1. San Francisco, CA
  2. Oakland, CA
  3. Livermore, CA
Issue Date:
Research Org.:
Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
908534
Patent Number(s):
7022381
Application Number:
10/610,093
Assignee:
Sandia National Laboratories (Livermore, CA)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F16 - ENGINEERING ELEMENTS AND UNITS F16K - VALVES
F - MECHANICAL ENGINEERING F15 - FLUID-PRESSURE ACTUATORS F15C - FLUID-CIRCUIT ELEMENTS PREDOMINANTLY USED FOR COMPUTING OR CONTROL PURPOSES
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Kirby, Brian J, Reichmuth, David S, and Shepodd, Timothy J. Method for producing high dielectric strength microvalves. United States: N. p., 2006. Web.
Kirby, Brian J, Reichmuth, David S, & Shepodd, Timothy J. Method for producing high dielectric strength microvalves. United States.
Kirby, Brian J, Reichmuth, David S, and Shepodd, Timothy J. Tue . "Method for producing high dielectric strength microvalves". United States. https://www.osti.gov/servlets/purl/908534.
@article{osti_908534,
title = {Method for producing high dielectric strength microvalves},
author = {Kirby, Brian J and Reichmuth, David S and Shepodd, Timothy J},
abstractNote = {A microvalve having a cast-in-place and lithographically shaped mobile, polymer monolith for fluid flow control in microfluidic devices and method of manufacture. The microvalve contains a porous fluorinated polymer monolithic element whose pores are filled with an electrically insulating, high dielectric strength fluid, typically a perfluorinated liquid. This combination provides a microvalve that combines high dielectric strength with extremely low electrical conductivity. These microvalves have been shown to have resistivities of at least 100 G.OMEGA. and are compatible with solvents such as water at a pH between 2.7 and 9.0, 1-1 propanol, acetonitrile, and acetone.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2006},
month = {4}
}

Patent:

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Works referenced in this record:

High-Pressure Microfluidic Control in Lab-on-a-Chip Devices Using Mobile Polymer Monoliths
journal, October 2002


Voltage-addressable on/off microvalves for high-pressure microchip separations
journal, December 2002