DE3468152D1 - Improved polarizing of material - Google Patents

Improved polarizing of material

Info

Publication number
DE3468152D1
DE3468152D1 DE8484300711T DE3468152T DE3468152D1 DE 3468152 D1 DE3468152 D1 DE 3468152D1 DE 8484300711 T DE8484300711 T DE 8484300711T DE 3468152 T DE3468152 T DE 3468152T DE 3468152 D1 DE3468152 D1 DE 3468152D1
Authority
DE
Germany
Prior art keywords
improved polarizing
polarizing
improved
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.)
Expired
Application number
DE8484300711T
Other languages
English (en)
Inventor
Seggern Heinz Von
Tsuey Tang Wang
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.)
AT&T Corp
Original Assignee
American Telephone and Telegraph Co Inc
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 American Telephone and Telegraph Co Inc filed Critical American Telephone and Telegraph Co Inc
Application granted granted Critical
Publication of DE3468152D1 publication Critical patent/DE3468152D1/de
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G7/00—Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture
    • H01G7/02—Electrets, i.e. having a permanently-polarised dielectric
    • H01G7/021—Electrets, i.e. having a permanently-polarised dielectric having an organic dielectric
    • H01G7/023—Electrets, i.e. having a permanently-polarised dielectric having an organic dielectric of macromolecular compounds
    • 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
    • H10N30/04—Treatments to modify a piezoelectric or electrostrictive property, e.g. polarisation characteristics, vibration characteristics or mode tuning
    • H10N30/045—Treatments to modify a piezoelectric or electrostrictive property, e.g. polarisation characteristics, vibration characteristics or mode tuning by polarising
    • 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
    • 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
    • H10N30/80—Constructional details
    • H10N30/85—Piezoelectric or electrostrictive active materials
    • H10N30/857—Macromolecular compositions

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Polarising Elements (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
DE8484300711T 1983-02-14 1984-02-06 Improved polarizing of material Expired DE3468152D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/466,771 US4512941A (en) 1983-02-14 1983-02-14 Polarizing of piezoelectric material

Publications (1)

Publication Number Publication Date
DE3468152D1 true DE3468152D1 (en) 1988-01-28

Family

ID=23853040

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8484300711T Expired DE3468152D1 (en) 1983-02-14 1984-02-06 Improved polarizing of material

Country Status (5)

Country Link
US (1) US4512941A (de)
EP (1) EP0119706B1 (de)
JP (1) JPH07109813B2 (de)
CA (1) CA1209950A (de)
DE (1) DE3468152D1 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4830795A (en) * 1986-07-03 1989-05-16 Rutgers, The State University Of New Jersey Process for making polarized material
US4961252A (en) * 1989-12-08 1990-10-09 Iowa State University Research Foundation, Inc. Means and method for nonuniform poling of piezoelectric transducers
US5352108A (en) * 1991-10-18 1994-10-04 Norito Sudo Porous film and porous film manufacturing apparatus
US5310511A (en) * 1992-03-24 1994-05-10 Eastman Kodak Company Method and apparatus for poling a planar polarizable body
FR2705827B1 (fr) * 1993-05-26 1995-08-11 Lewiner Jacques Perfectionnements aux dispositifs de fabrication des électrets et aux électrets obtenus.
US5511799A (en) 1993-06-07 1996-04-30 Applied Materials, Inc. Sealing device useful in semiconductor processing apparatus for bridging materials having a thermal expansion differential
US5659346A (en) * 1994-03-21 1997-08-19 Spectra, Inc. Simplified ink jet head
US6447887B1 (en) 1999-09-14 2002-09-10 Virginia Tech Intellectual Properties, Inc. Electrostrictive and piezoelectric thin film assemblies and method of fabrication therefor
EP2400574A1 (de) * 2010-06-22 2011-12-28 Universität Potsdam Polymerfolienmaterial mit piezoelektrischen Eigenschaften und Herstellungsverfahren
WO2015064325A1 (ja) * 2013-10-29 2015-05-07 ダイキン工業株式会社 フィルム及びその製造方法
EP3248579B1 (de) * 2016-05-27 2019-10-23 Permobil AB Lenkrollenanordnung und rollstuhl damit
CN107706302B (zh) * 2017-09-05 2023-09-01 科锐昇微系统(苏州)有限公司 高分子薄膜极化方法、承载组件和高分子薄膜极化装置
CN109494298A (zh) * 2017-09-12 2019-03-19 南昌欧菲生物识别技术有限公司 压电层的极化方法和超声波生物识别装置的制备方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3705312A (en) * 1970-11-02 1972-12-05 Bell Telephone Labor Inc Preparation of electret transducer elements by application of controlled breakdown electric field
JPS5718641B2 (de) * 1973-07-17 1982-04-17
JPS6051279B2 (ja) * 1977-10-19 1985-11-13 呉羽化学工業株式会社 熱可塑性樹脂圧電性焦電性フイルムの成極方法
FR2446045A1 (fr) * 1979-01-04 1980-08-01 Thomson Csf Transducteur piezo-electrique a element en polymere et son procede de fabrication
FR2464005A1 (fr) * 1979-08-21 1981-02-27 Thomson Csf Transducteur piezo-electrique en materiau polymere et son procede de fabrication
US4308223A (en) * 1980-03-24 1981-12-29 Albany International Corp. Method for producing electret fibers for enhancement of submicron aerosol filtration

Also Published As

Publication number Publication date
EP0119706A2 (de) 1984-09-26
JPH07109813B2 (ja) 1995-11-22
EP0119706A3 (en) 1985-09-18
US4512941A (en) 1985-04-23
CA1209950A (en) 1986-08-19
JPS59155115A (ja) 1984-09-04
EP0119706B1 (de) 1987-12-16

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Free format text: BLUMBACH, KRAMER & PARTNER, 65193 WIESBADEN

8339 Ceased/non-payment of the annual fee