WO2005019804A3 - Microfluidic chip with enhanced tip for stable electrospray ionization - Google Patents

Microfluidic chip with enhanced tip for stable electrospray ionization Download PDF

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Publication number
WO2005019804A3
WO2005019804A3 PCT/US2004/027774 US2004027774W WO2005019804A3 WO 2005019804 A3 WO2005019804 A3 WO 2005019804A3 US 2004027774 W US2004027774 W US 2004027774W WO 2005019804 A3 WO2005019804 A3 WO 2005019804A3
Authority
WO
WIPO (PCT)
Prior art keywords
tip
fluid channels
microfluidic chip
electrospray
open
Prior art date
Application number
PCT/US2004/027774
Other languages
French (fr)
Other versions
WO2005019804A2 (en
Inventor
Mingqi Zhao
Luliu Blaga
Luc Bousse
John Stults
Original Assignee
Predicant Biosciences Inc
Mingqi Zhao
Luliu Blaga
Luc Bousse
John Stults
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Predicant Biosciences Inc, Mingqi Zhao, Luliu Blaga, Luc Bousse, John Stults filed Critical Predicant Biosciences Inc
Publication of WO2005019804A2 publication Critical patent/WO2005019804A2/en
Publication of WO2005019804A3 publication Critical patent/WO2005019804A3/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J49/00—Particle spectrometers or separator tubes
    • H01J49/02—Details
    • H01J49/10—Ion sources; Ion guns
    • H01J49/16—Ion sources; Ion guns using surface ionisation, e.g. field-, thermionic- or photo-emission
    • H01J49/165—Electrospray ionisation
    • H01J49/167—Capillaries and nozzles specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/02—Burettes; Pipettes
    • B01L3/0241—Drop counters; Drop formers
    • B01L3/0268—Drop counters; Drop formers using pulse dispensing or spraying, eg. inkjet type, piezo actuated ejection of droplets from capillaries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
    • B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
    • B01L3/5027—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip
    • B01L3/502715—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip characterised by interfacing components, e.g. fluidic, electrical, optical or mechanical interfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B81—MICROSTRUCTURAL TECHNOLOGY
    • B81B—MICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICAL DEVICES
    • B81B1/00—Devices without movable or flexible elements, e.g. microcapillary devices
    • B81B1/006—Microdevices formed as a single homogeneous piece, i.e. wherein the mechanical function is obtained by the use of the device, e.g. cutters
    • B81B1/008—Microtips
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/416—Systems
    • G01N27/447—Systems using electrophoresis
    • G01N27/44704—Details; Accessories
    • G01N27/44717—Arrangements for investigating the separated zones, e.g. localising zones
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J49/00—Particle spectrometers or separator tubes
    • H01J49/0013—Miniaturised spectrometers, e.g. having smaller than usual scale, integrated conventional components
    • H01J49/0018—Microminiaturised spectrometers, e.g. chip-integrated devices, MicroElectro-Mechanical Systems [MEMS]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2300/00—Additional constructional details
    • B01L2300/08—Geometry, shape and general structure
    • B01L2300/0809—Geometry, shape and general structure rectangular shaped
    • B01L2300/0816—Cards, e.g. flat sample carriers usually with flow in two horizontal directions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2300/00—Additional constructional details
    • B01L2300/08—Geometry, shape and general structure
    • B01L2300/0861—Configuration of multiple channels and/or chambers in a single devices
    • B01L2300/0867—Multiple inlets and one sample wells, e.g. mixing, dilution
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2300/00—Additional constructional details
    • B01L2300/08—Geometry, shape and general structure
    • B01L2300/0887—Laminated structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2400/00—Moving or stopping fluids
    • B01L2400/02—Drop detachment mechanisms of single droplets from nozzles or pins
    • B01L2400/027—Drop detachment mechanisms of single droplets from nozzles or pins electrostatic forces between substrate and tip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B81—MICROSTRUCTURAL TECHNOLOGY
    • B81B—MICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICAL DEVICES
    • B81B2201/00—Specific applications of microelectromechanical systems
    • B81B2201/05—Microfluidics
    • B81B2201/058—Microfluidics not provided for in B81B2201/051 - B81B2201/054

Abstract

A microfluidic chip (10) formed with multiple fluid channels (12) terminating at a tapered electrospray ionization tip (14) for mass spectrometric analysis. The fluid channels (12) may be formed onto a channel plate that are in fluid communication with corresponding reservoirs. The electrospray tip (15) can be formed along a defined distal portion of the channel plate that can include a single or multiple tapered surfaces. The fluid channels (12) may terminate at an open-tip region (18) of the electrospray tip (15). A covering plate (5) may substantially enclose most portions of the fluid channels (12) formed on the channel plate except for the open-tip region (18). Another aspect of the invention provides methods for conducting mass spectrometric analysis of multiple samples flowing through individual fluid channels (12) in a single microfluidic chip (10) that is formed with a tapered electrospray tip (14) having an open-tip region (18).
PCT/US2004/027774 2003-08-26 2004-08-25 Microfluidic chip with enhanced tip for stable electrospray ionization WO2005019804A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US10/649,350 2003-08-26
US10/649,350 US6803568B2 (en) 2001-09-19 2003-08-26 Multi-channel microfluidic chip for electrospray ionization
US10/871,498 US7105812B2 (en) 2003-08-26 2004-06-18 Microfluidic chip with enhanced tip for stable electrospray ionization
US10/871,498 2004-06-18

Publications (2)

Publication Number Publication Date
WO2005019804A2 WO2005019804A2 (en) 2005-03-03
WO2005019804A3 true WO2005019804A3 (en) 2006-01-26

Family

ID=34216926

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/027774 WO2005019804A2 (en) 2003-08-26 2004-08-25 Microfluidic chip with enhanced tip for stable electrospray ionization

Country Status (2)

Country Link
US (2) US6803568B2 (en)
WO (1) WO2005019804A2 (en)

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