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WO2006115464A8 - Systems and methods for pumping continuous liquid columns using hydrophobicity control features in a microchannel - Google Patents

Systems and methods for pumping continuous liquid columns using hydrophobicity control features in a microchannel

Info

Publication number
WO2006115464A8
WO2006115464A8 PCT/SG2005/000130 SG2005000130W WO2006115464A8 WO 2006115464 A8 WO2006115464 A8 WO 2006115464A8 SG 2005000130 W SG2005000130 W SG 2005000130W WO 2006115464 A8 WO2006115464 A8 WO 2006115464A8
Authority
WO
WIPO (PCT)
Prior art keywords
microchannel
hydrophobic
fluid
propagating
region
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/SG2005/000130
Other languages
French (fr)
Other versions
WO2006115464A1 (en
Inventor
Saman Dharmatilleke
Liu Hong
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Agency for Science Technology and Research Singapore
Original Assignee
Agency for Science Technology and Research Singapore
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 Agency for Science Technology and Research Singapore filed Critical Agency for Science Technology and Research Singapore
Priority to EP05733447A priority Critical patent/EP1877334A4/en
Priority to CN200580050198.3A priority patent/CN101208259B/en
Priority to PCT/SG2005/000130 priority patent/WO2006115464A1/en
Publication of WO2006115464A1 publication Critical patent/WO2006115464A1/en
Anticipated expiration legal-status Critical
Publication of WO2006115464A8 publication Critical patent/WO2006115464A8/en
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B19/00—Machines or pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B1/00 - F04B17/00
    • F04B19/006—Micropumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Nanotechnology (AREA)
  • Materials Engineering (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Micromachines (AREA)
  • Reciprocating Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

A micropump includes a microchannel (10) formed in a substrate (15). The microchannel includes a plurality of electrode ring layers (25, 30) within the microchannel. Alternating electrode layers are covered with a fluoropolymer or other hydrophobic substance (20) that changes to hydrophilic in response to an applied voltage signal. Electrodes covered by fluoropolymer material (25) define hydrophobic regions interspersed between hydrophilic regions defined by exposed electrode ring layers (30). When a propagating fluid within the microchannel nears a hydrophobic region, a meniscus formed by the fluid is prevented from propagating due to the hydrophobic properties of the microchannel surface in that region. Application of a voltage to the hydrophobic region changes it to become hydrophilic, thereby allowing the meniscus, and the column of fluid behind it, to propagate past that region due to capillary forces. Upon encountering the next hydrophobic region, the meniscus is again prevented from propagating. Selective application of voltage signals to the electrodes in consecutive hydrophobic regions allows for a controlled rate of flow of fluid columns as determined by the dimensions of the microchannel (e.g., diameter of a microchannel having circular cross-section) and properties of the propagating fluid (e.g., viscosity).
PCT/SG2005/000130 2005-04-25 2005-04-25 Systems and methods for pumping continuous liquid columns using hydrophobicity control features in a microchannel Ceased WO2006115464A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP05733447A EP1877334A4 (en) 2005-04-25 2005-04-25 SYSTEMS AND METHODS FOR PUMPING CONTINUOUS LIQUID COLUMNS USING HYDROPHOBICITY CONTROL ELEMENTS IN A MICROCANAL
CN200580050198.3A CN101208259B (en) 2005-04-25 2005-04-25 Systems and methods for pumping continuous liquid columns in microchannels using hydrophobic control components
PCT/SG2005/000130 WO2006115464A1 (en) 2005-04-25 2005-04-25 Systems and methods for pumping continuous liquid columns using hydrophobicity control features in a microchannel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SG2005/000130 WO2006115464A1 (en) 2005-04-25 2005-04-25 Systems and methods for pumping continuous liquid columns using hydrophobicity control features in a microchannel

Publications (2)

Publication Number Publication Date
WO2006115464A1 WO2006115464A1 (en) 2006-11-02
WO2006115464A8 true WO2006115464A8 (en) 2007-12-21

Family

ID=37215017

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SG2005/000130 Ceased WO2006115464A1 (en) 2005-04-25 2005-04-25 Systems and methods for pumping continuous liquid columns using hydrophobicity control features in a microchannel

Country Status (3)

Country Link
EP (1) EP1877334A4 (en)
CN (1) CN101208259B (en)
WO (1) WO2006115464A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102094784B (en) * 2010-12-28 2012-11-21 哈尔滨工业大学 Millimeter-sized honeycomb capillary ultrasonic micro-pump
CN105233887B (en) * 2015-08-31 2017-06-23 中国科学院深圳先进技术研究院 A kind of micro-droplet drive part based on dielectric wetting and preparation method thereof
CN106130310A (en) * 2016-08-15 2016-11-16 华南理工大学 A kind of cylindrical current body power Micropump and manufacture method thereof
US10508755B2 (en) 2017-07-21 2019-12-17 International Business Machines Corporation Fluid delivery device with hydrophobic surface
CN109529407B (en) * 2018-12-29 2020-04-28 四川大学 Simple micro-channel device for forming stable annular flow
CN111056525B (en) * 2019-11-12 2023-04-18 重庆大学 Method for enhancing boiling heat exchange of micro-channel and inhibiting flow instability caused by alternating current infiltration effect
CN114908358B8 (en) * 2022-04-14 2024-06-21 孔确(成都)科技有限公司 A method and device for preparing an amphiphilic molecular layer

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6565727B1 (en) * 1999-01-25 2003-05-20 Nanolytics, Inc. Actuators for microfluidics without moving parts
WO2002007503A1 (en) * 2000-07-25 2002-01-31 The Regents Of The University Of California Electrowetting-driven micropumping
US7329545B2 (en) * 2002-09-24 2008-02-12 Duke University Methods for sampling a liquid flow
KR100474851B1 (en) * 2003-01-15 2005-03-09 삼성전자주식회사 Ink expelling method amd inkjet printhead adopting the method
WO2005047696A1 (en) * 2003-11-17 2005-05-26 Koninklijke Philips Electronics N.V. System for manipulation of a body of fluid

Also Published As

Publication number Publication date
EP1877334A1 (en) 2008-01-16
WO2006115464A1 (en) 2006-11-02
CN101208259B (en) 2011-07-06
EP1877334A4 (en) 2011-05-04
CN101208259A (en) 2008-06-25

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