PVDF/PMMA blend pyroelectric thin films

Charlot, B.; Gauthier, Sebastian; Garraud, Alexandra; Combette, Philippe; Giani, Alain

doi:10.1007/s10854-011-0360-7

Cited by 24 publications

(13 citation statements)

References 17 publications

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“…The prepared films are smooth, homogenous, and can be chemically modified. In the present case, 50% PMMA concentration in the blend is necessary for keeping a sufficient piezoelectric activity, but higher PMMA concentration can lead to a total loss of a piezoelectric response . For this reason, the proper combination of the film composition and preparation method is a crucial point.…”

Section: Resultsmentioning

confidence: 91%

Fast and Reproducible Wettability Switching on Functionalized PVDF/PMMA Surface Controlled by External Electric Field

Guselnikova

Švanda

Postnikov

et al. 2016

Adv Materials Inter

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In this paper, the novel material with controllable wettability switching triggered by external electric field is developed. The material is based on the piezopolymer blend of poly(methyl methacrylate) (PMMA) and polyvinylidene difluoride (PVDF), grafted with various hydrophobic and hydrophilic molecules to alter the initial wettability of polymer films. Organic functional groups are grafted on the blend surface via formation of covalent bonds between PMMA and arenediazonium tosylates. The surface chemical structure and morphology of prepared samples are studied by X‐ray photoelectron spectroscopy, UV–vis, and attenuated total reflection infra red (ATR‐IR) spectroscopies, atomic force microscopy (AFM), and confocal microscopy. Attachment of gold nanoparticles to grafted thiol chemical groups is additionally used to confirm the modification procedure. Application of external stimuli in the form of the electric field leads to dramatic changes in water contact angle. Wettability switching is found to be extremely fast and completely repeatable without the destructions of the polymer film. Mechanism of switching is attributed to the morphological smoothening of piezoelectric responsible composite PVDF–PMMA under the application of external stimuli.

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Section: Resultsmentioning

confidence: 91%

Fast and Reproducible Wettability Switching on Functionalized PVDF/PMMA Surface Controlled by External Electric Field

Guselnikova

Švanda

Postnikov

et al. 2016

Adv Materials Inter

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“…When, the detector is heated by incident radiation, the polarization changes by the amount of incident radiation determined by the temperature change and the pyroelectric coefficient of the material [4]. Figure 4 presents the electrical conductivity of the PANI-CSA/PVDF/BaTiO 3 composite films as function of BaTiO 3 loading.…”

Section: Figure (3): Measurement Setup Of A) I-v Characteristics B) mentioning

confidence: 99%

“…For many applications a high pyroelectric parameters are required. In order to get maximum pyroelectric parameters, several approaches were already investigated, for example the appropriate choice of pyroelectric parameters, special construction techniques to reduce the heat conduction away from the sensitive element or the use of thermal absorber layers [3,4]. Pyroelectric materials are polar and respond to thermal energy by a change in spontaneous polarisation.…”

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confidence: 99%

Pyroelectric Parameters Measurement of Infrared Sensor Based on PANICSA/ PVDF/BaTiO3 Composite Films

Tayel

Soliman

Ebrahim

et al. 2016

The International Conference on Electrical Engineering

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An infrared sensor based on composite of polyaniline/polyvinylidene fluoride (PANI/PVDF)/ barium titanate (BaTiO 3) with different weight percentages (25, 50, 70 and 100) of BaTiO 3 has been fabricated. PANI doped with camphor sulfonic acid (CSA) was prepared chemically. Electrical measurements such as electrical conductivity and pyroelectric current and coefficient of these composites were performed. It was found that the pyroelectric coefficient increases with increasing of the weight percentage of BaTiO 3. The behavior of electrical conductivity of PANI-CSA/PVDF/BaTiO 3 composite films with different weight percentages of BaTiO 3 was followed up the percolation theory. The percolation threshold value of PANI-CSA/PVDF/BaTiO 3 composite films was found at 25 wt.% of BaTiO 3. The conductivity of the composite films was increased from 4.08×10-8 S/cm 0 wt.% of BaTiO 3 to 8.84×10-6 S/cm at 100 wt.% of BaTiO 3. The pyroelectric coefficient values were enhanced from 2.35×10-5 to 1.27×10-3 C/m 2˚C at 0 wt.% and 100 wt.% of BaTiO 3 , respectively.

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“…This technique allows building microstructures over large surfaces but also the possibility to build thick layers in the range of tens of microns. Screen-printing, also known as serigraphy, is an ink patterns deposition technique that uses the localized transfer of these inks through a stencil in a woven mesh (Figure1) [3]. This technique allows both the deposition and patterning of metallic, ceramic or polymeric materials over large surfaces in a single step.…”

Section: Microfabricationmentioning

confidence: 99%

Fabrication, characterization and test of acoustic sensors for detection of pollutants in aquatic environments

Lapeine

Very

Laux

et al. 2015

2015 Symposium on Design, Test, Integration and Packaging of MEMS/MOEMS (DTIP)

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In this paper, we present an ultrasonic transducer for the detection of hydrocarbon pollutants with a given concentration threshold. The device is made by screen-printing using piezoelectric PZT (Lead Zirconate Titanate). The piezo device is used as an ultrasound emitter and receiver that allow the measurement of sound velocity in a liquid medium, the value of the sound velocity being modified by the presence of pollutants.

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PVDF/PMMA blend pyroelectric thin films

Cited by 24 publications

References 17 publications

Fast and Reproducible Wettability Switching on Functionalized PVDF/PMMA Surface Controlled by External Electric Field

Fast and Reproducible Wettability Switching on Functionalized PVDF/PMMA Surface Controlled by External Electric Field

Pyroelectric Parameters Measurement of Infrared Sensor Based on PANICSA/ PVDF/BaTiO3 Composite Films

Fabrication, characterization and test of acoustic sensors for detection of pollutants in aquatic environments

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