WO2004109817A3 - Electroactive polymer contractible actuator - Google Patents

Electroactive polymer contractible actuator Download PDF

Info

Publication number
WO2004109817A3
WO2004109817A3 PCT/IB2004/001868 IB2004001868W WO2004109817A3 WO 2004109817 A3 WO2004109817 A3 WO 2004109817A3 IB 2004001868 W IB2004001868 W IB 2004001868W WO 2004109817 A3 WO2004109817 A3 WO 2004109817A3
Authority
WO
WIPO (PCT)
Prior art keywords
electrode
electrodes
coil
deformable
actuator
Prior art date
Application number
PCT/IB2004/001868
Other languages
French (fr)
Other versions
WO2004109817A2 (en
Inventor
Federico Carpi
Rossi Danilo De
Original Assignee
Univ Pisa
Federico Carpi
Rossi Danilo De
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 Univ Pisa, Federico Carpi, Rossi Danilo De filed Critical Univ Pisa
Publication of WO2004109817A2 publication Critical patent/WO2004109817A2/en
Publication of WO2004109817A3 publication Critical patent/WO2004109817A3/en

Links

Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/50—Piezoelectric or electrostrictive devices having a stacked or multilayer structure
    • H10N30/503—Piezoelectric or electrostrictive devices having a stacked or multilayer structure with non-rectangular cross-section orthogonal to the stacking direction, e.g. polygonal, circular
    • H10N30/505—Annular cross-section
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/01—Manufacture or treatment
    • H10N30/08—Shaping or machining of piezoelectric or electrostrictive bodies
    • H10N30/084—Shaping or machining of piezoelectric or electrostrictive bodies by moulding or extrusion
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/01—Manufacture or treatment
    • H10N30/08—Shaping or machining of piezoelectric or electrostrictive bodies
    • H10N30/085—Shaping or machining of piezoelectric or electrostrictive bodies by machining
    • H10N30/088—Shaping or machining of piezoelectric or electrostrictive bodies by machining by cutting or dicing
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/01—Manufacture or treatment
    • H10N30/09—Forming piezoelectric or electrostrictive materials
    • H10N30/098—Forming organic materials
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00367—Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like
    • A61B2017/00398—Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like using powered actuators, e.g. stepper motors, solenoids
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00831—Material properties
    • A61B2017/00867—Material properties shape memory effect
    • A61B2017/00871—Material properties shape memory effect polymeric

Abstract

A electromechanical actuator (1) for converting electric energy into mechanical energy or vice-versa comprising at least a first and at least a second deformable electrode (11 and 12) and a dielectric element (20) that can be deformed located between the electrodes in order to fill the space between the coils. The two deformable electrodes (11 and 12) have curvilinear shape extending as coils so that each coil of the first electrode is alternalted to a coil of the second electrode, and in particular have helical shape. They can be made of resilient material in which particles of conductive material are integrated and are arranged coaxially so that each coil of the first electrode (11) is alternated to a coil of the second electrode (12). Between coils of the electrodes (11 and 12) a dielectric element (20) is located made of electro-active polymer capable of warping or deflecting. When a voltage AV is applied to the couple of deformable electrodes (11) and (12), the electrical field generated produces an inner stress that causes the resilient material (20) to deform according to this voltage. Thus electric energy is converted into mechanical energy when between said deformable electrodes a voltage generating an electrical field causes the dielectric material to deform. Conversely mechanical energy is converted into electric energy when the actuator is made of a material capable of generating electrical field when a deformation is applied. The actuator can be used also as sensor of deformation, as electric generator or as condenser at high specific capacity.
PCT/IB2004/001868 2003-06-09 2004-06-09 Electroactive polymer contractible actuator WO2004109817A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000043A ITPI20030043A1 (en) 2003-06-09 2003-06-09 ELECTROMECHANICAL CONTRACTILE POLYMER ACTUATOR
ITPI2003A000043 2003-06-09

Publications (2)

Publication Number Publication Date
WO2004109817A2 WO2004109817A2 (en) 2004-12-16
WO2004109817A3 true WO2004109817A3 (en) 2005-02-10

Family

ID=33495870

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2004/001868 WO2004109817A2 (en) 2003-06-09 2004-06-09 Electroactive polymer contractible actuator

Country Status (2)

Country Link
IT (1) ITPI20030043A1 (en)
WO (1) WO2004109817A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101606004B (en) * 2007-02-14 2012-02-22 雷诺股份公司 Electric control braking device

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070038224A1 (en) * 2005-07-28 2007-02-15 Ethicon Endo-Surgery, Inc. Electroactive polymer-based flexing access port
ITPI20050095A1 (en) * 2005-09-05 2005-12-05 Federico Carpi ACTUATOR, SENSOR AND GENERATOR WITH ELECTROACTIVE POLYMERS IN FOLDED CONFIGURATION
US8432057B2 (en) 2007-05-01 2013-04-30 Pliant Energy Systems Llc Pliant or compliant elements for harnessing the forces of moving fluid to transport fluid or generate electricity
DE102009030693A1 (en) 2009-06-26 2010-12-30 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Electroactive elastomer actuator and process for its preparation
JP5772221B2 (en) * 2011-05-27 2015-09-02 株式会社村田製作所 Electrostrictive actuator and method of using the same
JP6011325B2 (en) * 2012-12-26 2016-10-19 富士通株式会社 Actuator, cell substrate composite, method for manufacturing cell substrate composite, and method for manufacturing actuator
US10903762B2 (en) * 2015-09-02 2021-01-26 Koninklijke Philips N.V. Actuator device based on an electroactive or photoactive polymer
JP6663046B2 (en) * 2016-06-07 2020-03-11 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． Electroactive polymer actuator
TWI775975B (en) * 2017-10-26 2022-09-01 美商琳得科美國股份有限公司 Carbon nanotube sheet wrapping muscles
US11491004B2 (en) 2017-11-17 2022-11-08 Lintec Of America, Inc. Carbon nanotube artificial muscle valve and connections

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997027822A1 (en) * 1996-01-30 1997-08-07 John Chilver Artificial muscle
DE19814697C1 (en) * 1998-04-01 1999-10-21 Doru Constantin Lupasco Piezoelectric actuator, especially multilayer ceramic piezo-actuator used as positioning device, ultrasonic emitter, valve controller or sensor
WO2001047041A2 (en) * 1999-12-21 2001-06-28 1... Limited Electro-active devices
US6545384B1 (en) * 1997-02-07 2003-04-08 Sri International Electroactive polymer devices
WO2004031582A1 (en) * 2002-10-02 2004-04-15 Scimed Life Systems, Inc. Electroactive polymer actuated heart-lung bypass pumps

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997027822A1 (en) * 1996-01-30 1997-08-07 John Chilver Artificial muscle
US6545384B1 (en) * 1997-02-07 2003-04-08 Sri International Electroactive polymer devices
DE19814697C1 (en) * 1998-04-01 1999-10-21 Doru Constantin Lupasco Piezoelectric actuator, especially multilayer ceramic piezo-actuator used as positioning device, ultrasonic emitter, valve controller or sensor
WO2001047041A2 (en) * 1999-12-21 2001-06-28 1... Limited Electro-active devices
WO2004031582A1 (en) * 2002-10-02 2004-04-15 Scimed Life Systems, Inc. Electroactive polymer actuated heart-lung bypass pumps

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
FLETCHER R.: "Force Transduction Materials for Human-Technology Interfaces", IBM SYST J; IBM SYSTEMS JOURNAL 1996 IBM, ARMONK, NY, USA, vol. 35, no. 3-4, 1996, pages 630 - 638, XP002304254 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101606004B (en) * 2007-02-14 2012-02-22 雷诺股份公司 Electric control braking device

Also Published As

Publication number Publication date
ITPI20030043A1 (en) 2004-12-10
WO2004109817A2 (en) 2004-12-16

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