Title:
REFERENCE ELECTRODE HAVING A MICROFLUIDIC FLOWING LIQUID JUNCTION AND FILTERS MEMBERS
Document Type and Number:
WIPO Patent Application WO2004005909
Kind Code:
A3
Abstract:
A flowing junction reference electrode comprising a liquid junction member (210) matched with a filter. The junction member and the filter (202, 202', 202'') are situated between a reference electrolyte solution and a sample solution. An array of nanochannels (106) spans the junction member and provides fluid communication between the electrolyte solution and the sample solution. The filter is configured to allow a greater flux of electrolyte than that associated with the junction member. Preferably, the number of pores is greater than the number of nanochannels. The filter is preferably configured to have pores with an inner diameter that is the same or less than the inner diameter of the nanochannels. In some embodiment, the resistance of the filter is made lower relative to the resistance of the junction member by selecting suitable length, number, and inner diameter size for the pores of the filter relative to the nanochannels of the junction member.
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Inventors:
BROADLEY SCOTT T
SILVERMAN HERBERT P
RAGSDALE STEVEN R
CHEN TA-YUNG
SILVERMAN HERBERT P
RAGSDALE STEVEN R
CHEN TA-YUNG
Application Number:
PCT/US2003/021156
Publication Date:
February 03, 2005
Filing Date:
July 02, 2003
Export Citation:
Assignee:
BROADLEY TECHNOLOGIES CORP (US)
International Classes:
G01N27/401; (IPC1-7): G01N27/401; G01N27/30
Domestic Patent References:
| WO2001075430A2 | 2001-10-11 |
Foreign References:
| US20010045357A1 | 2001-11-29 | |||
| GB2093193A | 1982-08-25 | |||
| US4886505A | 1989-12-12 | |||
| EP0761094A1 | 1997-03-12 | |||
| DE1217657B | 1966-05-26 |
Other References:
PETERS G: "A REFERENCE ELECTRODE WITH FREE-DIFFUSION LIQUID JUNCTION FOR ELECTROCHEMICAL MEASUREMENTS UNDER CHANGING PRESSURE CONDITIONS", ANALYTICAL CHEMISTRY, AMERICAN CHEMICAL SOCIETY. COLUMBUS, US, vol. 69, no. 13, 1 July 1997 (1997-07-01), pages 2362 - 2366, XP000696558, ISSN: 0003-2700
NISHIZAWA M ET AL: "METAL NANOTUBULE MEMBRANES WITH ELECTROCHEMICALLY SWITCHABLE ION-TRANSPORT SELECTIVITY", SCIENCE, AMERICAN ASSOCIATION FOR THE ADVANCEMENT OF SCIENCE,, US, vol. 268, 5 May 1995 (1995-05-05), pages 700 - 702, XP000946546, ISSN: 0036-8075
HULTEEN J C ET AL: "A GENERAL TEMPLATE-BASED METHOD FOR THE PREPARATION OF NANOMATERIALS", JOURNAL OF MATERIALS CHEMISTRY, THE ROYAL SOCIETY OF CHEMISTRY, CAMBRIDGE, GB, vol. 7, no. 7, 1 July 1997 (1997-07-01), pages 1075 - 1087, XP000703793, ISSN: 0959-9428
NISHIZAWA M ET AL: "METAL NANOTUBULE MEMBRANES WITH ELECTROCHEMICALLY SWITCHABLE ION-TRANSPORT SELECTIVITY", SCIENCE, AMERICAN ASSOCIATION FOR THE ADVANCEMENT OF SCIENCE,, US, vol. 268, 5 May 1995 (1995-05-05), pages 700 - 702, XP000946546, ISSN: 0036-8075
HULTEEN J C ET AL: "A GENERAL TEMPLATE-BASED METHOD FOR THE PREPARATION OF NANOMATERIALS", JOURNAL OF MATERIALS CHEMISTRY, THE ROYAL SOCIETY OF CHEMISTRY, CAMBRIDGE, GB, vol. 7, no. 7, 1 July 1997 (1997-07-01), pages 1075 - 1087, XP000703793, ISSN: 0959-9428
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