Flexible large area ferroelectret sensors for location sensitive touchpads

被引：63

作者：

Buchberger, Gerda ^{[1
]}

Schwodiauer, Reinhard ^{[1
]}

Bauer, Siegfried ^{[1
]}

机构：

[1] Johannes Kepler Univ Linz, Soft Matter Phys, A-4040 Linz, Austria

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 12期

关键词：

D O I：

10.1063/1.2903711

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Cellular polypropylene ferroelectrets are flexible transducer materials with dominant longitudinal piezoelectricity. They can be used for transient pressure sensing applications, due to the low cost of the sensor material. The authors show that ferroelectrets allow for the production of keyboards and touch pads with a customizable layout. Large area resistive electrodes on the ferroelectret with electronics at the edges avoid the preparation of complex sensor matrices. A touch pad of 10 X 10 cm(2) area was tested by applying a force of 1.7 N on an area with a diameter of 5 mm in a grid matrix with 23 X 23 elements. (C) 2008 American Institute of Physics.

引用

页数：3

共 17 条

[1] Piezoelectrets from thermo-formed bubble structures of fluoropolymer-electret films [J].

Altafim, R. A. C. ;

Basso, H. C. ;

Altafim, R. A. P. ;

Lima, L. ;

de Aquino, C. V. ;

Neto, L. Goncalves ;

Gerhard-Multhaupt, R. .

IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION, 2006, 13 (05) :979-985

[2] The use of electromechanical film (EMFi) sensors in building a robust touch-sensitive tablet-like interface [J].

Barna, Laurentiu ;

Koivuluoma, Mikko ;

Hasu, Matias ;

Tuppurainen, Jussi ;

Varri, Alpo .

IEEE SENSORS JOURNAL, 2007, 7 (1-2) :74-80

[3] Ferroelectrets: Soft electroactive foams for transducers [J].

Bauer, S ;

Gerhard-Multhaupt, R ;

Sessler, GM .

PHYSICS TODAY, 2004, 57 (02) :37-43

[4] Piezo-, pyro- and ferroelectrets: Soft transducer materials for electromechanical energy conversion [J].

Bauer, Siegfried .

IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION, 2006, 13 (05) :953-962

[5] Flexible ferroelectret field-effect transistor for large-area sensor skins and microphones [J].

Graz, Ingrid ;

Kaltenbrunner, Martin ;

Keplinger, Christoph ;

Schwodiauer, Reinhard ;

Bauer, Siegfried ;

Lacour, Stephanie P. ;

Wagner, Sigurd .

APPLIED PHYSICS LETTERS, 2006, 89 (07)

[6] Breakdown-induced polarization buildup in porous fluoropolymer sandwiches: a thermally stable piezoelectret [J].

Hu, Z ;

von Seggern, H .

JOURNAL OF APPLIED PHYSICS, 2006, 99 (02)

[7] Dielectric barrier microdischarges: Mechanism for the charging of cellular piezoelectric polymers [J].

Lindner, M ;

Bauer-Gogonea, S ;

Bauer, S ;

Paajanen, M ;

Raukola, J .

JOURNAL OF APPLIED PHYSICS, 2002, 91 (08) :5283-5287

[8] Large and broadband piezoelectricity in smart polymer-foam space-charge electrets [J].

Neugschwandtner, GS ;

Schwödiauer, R ;

Vieytes, M ;

Bauer-Gogonea, S ;

Bauer, S ;

Hillenbrand, J ;

Kressmann, R ;

Sessler, GM ;

Paajanen, M ;

Lekkala, J .

APPLIED PHYSICS LETTERS, 2000, 77 (23) :3827-3829

[9] Piezo- and pyroelectricity of a polymer-foam space-charge electret [J].

Neugschwandtner, GS ;

Schwödiauer, R ;

Bauer-Gogonea, S ;

Bauer, S ;

Paajanen, M ;

Lekkala, J .

JOURNAL OF APPLIED PHYSICS, 2001, 89 (08) :4503-4511

[10] Conformable, flexible, large-area networks of pressure and thermal sensors with organic transistor active matrixes [J].

Someya, T ;

Kato, Y ;

Sekitani, T ;

Iba, S ;

Noguchi, Y ;

Murase, Y ;

Kawaguchi, H ;

Sakurai, T .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2005, 102 (35) :12321-12325

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