Reliability of poly 3,4-ethylenedioxythiophene strain gauge

Mateiu, Ramona Valentina; Lillemose, Michael; Hansen, Thomas; Boisen, Anja; Geschke, Oliver

doi:10.1016/j.mee.2007.01.192

Cited by 26 publications

(16 citation statements)

References 11 publications

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“…On the other hand, it is a fact that the 4 point bending experiments does not provide the large deformations needed for the alignment of the polymer chains. Further, other conductive polymers with similar conduction mechanism show positive GFs [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

“…al. [21] reported the fabrication of a chip based on poly (3,4-ethylenedioxythiophene) (PEDOT) that showed a GF of 3.41. U. Lang et.…”

Section: Introductionmentioning

confidence: 99%

“…The sensitivity of the piezoresistive materials is typically characterized by the gauge factor (GF) [26,30,31], which is defined as the variation of the resistance per unit of strain [31] and relates the variations of the electrical resistance of the material as a function of the deformation caused by the mechanical stress [21,30]. This parameter can be calculated from:…”

Section: Introductionmentioning

confidence: 99%

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Piezoresistive effect in spin-coated polyaniline thin films

et al. 2012

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Polymeric materials have been replacing other materials in various applications, from structural to electronic components. In particular, since the discovery of conducting polymers, the use of these materials is growing up in the manufacture of electronic components, such as organic lightemitting diodes, organic electrodes, energy storage devices and artificial muscles, among others. On the other hand, examples of sensors of conductive polymers based on the piezoresistive effect, with large potential for applications, are not sufficiently investigated. This work reports on the piezoresistive effect of an intrinsically conductive polymer, polyaniline, which was prepared in the form of thin films by spin coating on polyethylene terephthalate substrates. The relationship between electrical response and mechanical solicitations is presented for different preparation conditions. The values of the gauge factor ranges from 10 to 22 for different samples and demonstrates the viability of these materials as piezoresistive sensors.

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Section: Introductionmentioning

confidence: 99%

“…al. [21] reported the fabrication of a chip based on poly (3,4-ethylenedioxythiophene) (PEDOT) that showed a GF of 3.41. U. Lang et.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Piezoresistive effect in spin-coated polyaniline thin films

et al. 2012

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“…Conductive polymers have been extensively studied during the past few decades for application such as biosensors, [134] strain gauges, [135] organic solar cells, [136] or organic light-emitting diodes. [137] However, many challenges have to be met in the development of functional conducting polymers.…”

Section: Polymeric Surfacesmentioning

confidence: 99%

Orthogonal Transformations on Solid Substrates: Efficient Avenues to Surface Modification

2009

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The performance of solid substrates is not only governed by their molecular constitution, but is also critically influenced by their surface constitution at the solid/gas or solid/liquid interface. In here, we critically review the use of orthogonal chemical transformations (so‐called click chemistry) to achieve efficient surface modifications of materials ranging from gold and silica nanoparticles, polymeric films, and microspheres to fullerenes as well as carbon nanotubes. In addition, the functionalization of surfaces via click chemistry with biomolecules is explored. Although a large host of reactions fulfilling the click‐criteria exist, pericyclic reactions are most frequently employed for efficient surface modifications. The advent of the click chemistry concept has led—as evident from the current literature—to a paradigm shift in current approaches for materials modification: Away from unspecific and nonselective reactions to highly specific true surface engineering.

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“…Some of the devices possible with these materials are strain gauges, OLED, and gas sensors. The resistance of a conducting polymer varies when gasses are adsorbed on its surface which is used to build gas sensors while conducting polymers that show peizoresistive property are used in building strain gauges of high gauge factor [1][2][3][4][5]. In all these devices, the bulk resistance of the polymer film is measured which necessitates formation of a metal polymer contact.…”

Section: Introductionmentioning

confidence: 99%

Development of Technique for Making Ohmic Contacts to PEDOT-PSS Films

Bindu¹,

Kumar

Suresh³

2013

Lecture Notes in Electrical Engineering

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Conducting polymers (PEDOT-PSS) belong to a category of materials which are peizoresitive and are used in variety of applications like strain gauges, gas sensors and many more. Since these conducting polymers are semiconductors, four probe measurement of film resistance is necessary to avoid errors due to contact resistance and spreading resistances. In a device, it is cumbersome to make four probe measurements and convenient to make two probe measurements. Large differences in the work function of polymers and contacts metals lead to rectifying contacts rather than ohmic contacts. A two probe measurement technique of making ohmic contacts to PEDOT-PSS film pristine and doped with 5 % DMSO is presented. It has been shown that by coating the contact probes with carbon nano powder, ohmic contacts can be achieved. This method can be employed for all conducting polymer measurements.

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Reliability of poly 3,4-ethylenedioxythiophene strain gauge

Cited by 26 publications

References 11 publications

Piezoresistive effect in spin-coated polyaniline thin films

Piezoresistive effect in spin-coated polyaniline thin films

Orthogonal Transformations on Solid Substrates: Efficient Avenues to Surface Modification

Development of Technique for Making Ohmic Contacts to PEDOT-PSS Films

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