Design Automation for a Fully Printed P(VDF-TrFE) Transducer

Leitner, Christoph; Keller, Kirill; Thurner, S.; Baumgartner, Christian; Greco, Francesco; Scharfetter, H.; Schröttner, Jörg

doi:10.1109/isaf51494.2022.9870126

Cited by 4 publications

(3 citation statements)

References 13 publications

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“…In order to accelerate prototyping and facilitate the evaluation of resonance behavior, we employed a previously reported simulation model based on an adapted Mason model and transmission line theory. [ 36 ] We validated our simulation results through experimental measurements of printed transducers on a VNA (see details in the Experimental Section).…”

Section: Resultsmentioning

confidence: 95%

“…Our printed US transducer offers several advantageous features that distinguish it from other reported wearable and flexible transducers. These include a low bending radius of ≈3.5 mm, [ 36 ] printability, and a compact thickness of ≈75 µm. Table S1 of the Supporting Information provides a summary of these features, as well as additional properties, comparing our printed transducer to other reported wearable and flexible transducers.…”

Section: Resultsmentioning

confidence: 99%

“…The poly(vinylidene fluoride‐trifluoroethylene) (P(VDF‐TrFE)) ink was formulated similarly to previously published procedures. [ 36 ] Piezotech FC20 (purchased from Arkema, France) is a P(VDF‐TrFE) powder with a content of TrFE of 20 mol%. P(VDF‐TrFE) was dissolved in a mixture of methyl ethyl ketone and dimethyl formamide with a weight ratio 1:9 producing a 20 wt% of P(VDF‐TrFE) solution.…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Fully Printed Flexible Ultrasound Transducer for Medical Applications

Keller

Leitner

Baumgartner

et al. 2023

Adv Materials Technologies

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The fabrication of a fully printed, lead‐free, polymer piezoelectric transducer is presented and the characterization of its structural, dielectric, and ferroelectric properties at different processing stages is demonstrated. The performance of poly(vinylidene fluoride‐trifluoroethylene) transducers with resonance frequency analyses, acoustic power measurements, and pulse‐echo experiments is evaluated. Notably, for the first time for a fully printed transducer, an optimal performance in the medical ultrasound range (<15 MHz) is demonstrated with acoustic power >1 W cm−2, which is promising for applications in epidermal and wearable electronics. Overall, the findings provide a strong foundation for future research in the area of flexible ultrasound transducers.

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Section: Resultsmentioning

confidence: 95%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Fully Printed Flexible Ultrasound Transducer for Medical Applications

Keller

Leitner

Baumgartner

et al. 2023

Adv Materials Technologies

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Ultrasensitive mechanical/thermal response of a P(VDF-TrFE) sensor with a tailored network interconnection interface

Cai

Liu

et al. 2023

Nat Commun

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Ferroelectric polymers have great potential applications in mechanical/thermal sensing, but their sensitivity and detection limit are still not outstanding. We propose interface engineering to improve the charge collection in a ferroelectric poly(vinylidene fluoride-co-trifluoroethylene) copolymer (P(VDF-TrFE)) thin film via cross-linking with poly(3,4-ethylenedioxythiophene) doped with polystyrenesulfonate (PEDOT:PSS) layer. The as-fabricated P(VDF-TrFE)/PEDOT:PSS composite film exhibits an ultrasensitive and linear mechanical/thermal response, showing sensitivities of 2.2 V kPa−1 in the pressure range of 0.025–100 kPa and 6.4 V K−1 in the temperature change range of 0.05–10 K. A corresponding piezoelectric coefficient of −86 pC N−1 and a pyroelectric coefficient of 95 μC m−2 K−1 are achieved because more charge is collected by the network interconnection interface between PEDOT:PSS and P(VDF-TrFE), related to the increase in the dielectric properties. Our work shines a light on a device-level technique route for boosting the sensitivity of ferroelectric polymer sensors through electrode interface engineering.

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