Solution processing of piezoelectric unconventional structures

Cardoso, V. F.; Costa, Carlos M.; Correia, Daniela M.; Carvalho, E.O.; Peřinka, Nikola; Martins, Pedro M.; Meira, Rafaela M.; Marques‐Almeida, Teresa; Rodrigues-Marinho, T.; Lanceros‐Méndez, S.

doi:10.1016/b978-0-12-821551-7.00006-3

Cited by 4 publications

(2 citation statements)

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“…This happens when a crystalline material like ceramics or polymers with non-central symmetry is mechanically deformed by external forces. [5][6][7] Lead-free piezoelectric nanomaterials of barium titanate (BaTiO 3 ) and zinc oxide (ZnO), along with PVDF-based polymeric products, have been extensively investigated in recent years and demonstrated numerous advantages, such as good piezoelectricity, simplicity in structure, ease of synthesis, low production cost, and multifunctional applications. 8 Tuning the band gap of ZnO nanomaterials and their morphologies was extensively studied to test its signicance in piezoelectric voltage generation by many research groups, including ours.…”

Section: Introductionmentioning

confidence: 99%

Effect of Zn–Fe₂O₃ nanomaterials on the phase separated morphologies of polyvinylidene fluoride piezoelectric nanogenerators

Yempally,

Magadia,

Ponnamma

2023

RSC Adv.

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Section: Introductionmentioning

confidence: 99%

Effect of Zn–Fe₂O₃ nanomaterials on the phase separated morphologies of polyvinylidene fluoride piezoelectric nanogenerators

Yempally,

Magadia,

Ponnamma

2023

RSC Adv.

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“…The process can be achieved by different routes such as: thermally induced phase separation (TIPS), non-solvent induced phase separation (NIPS), vapor-induced phase separation (VIPS), and evaporationinduced phase separation (EIPS). [24,34,35] The type and conditions of the phase separation process greatly influence the PVDF-HFP macro to nano-meter pores structures, as well as the homogeneous integration of the MOF nanomaterials into the PVDF-HFP matrix. That is, the processing of the PVDF-HFP is key to i) avoiding the complete encapsulation of the MOFs, ii) enhancing their surface exposure into the interconnected pore-space of the polymeric matrix, and iii) preventing their detachment during working conditions.…”

Section: Introductionmentioning

confidence: 99%

On The Multiscale Structure and Morphology of PVDF‐HFP@MOF Membranes in The Scope of Water Remediation Applications

Valverde

Luís

Salazar

et al. 2023

Adv Materials Inter

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Poly(vinylidene fluoride‐co‐hexafluoropropylene) (PVDF‐HFP) is a highly versatile polymer used for water remediation due to its chemical robustness and processability. By incorporating metal‐organic frameworks (MOFs) into PVDF‐HFP membranes, the material can gain metal‐adsorption properties. It is well known that the effectiveness of these composites removing heavy metals depends on the MOF's chemical encoding and the extent of encapsulation within the polymer. In this study, it is examined how the micro to nanoscale structure of PVDF‐HFP@MOF membranes influences their adsorption performance for CrVI. To this end, the micro‐ and nanostructure of PVDF‐HFP@MOF membranes are thoroughly studied by a set of complementary techniques. In particular, small‐angle X‐ray and neutron scattering allow to precisely describe the nanostructure of the polymer‐MOF complex systems, while scanning microscopy and mercury porosimetry give a clear insight into the macro and mesoporosity of the system. By correlating nanoscale structural features with the adsorption capacity of the MOF nanoparticles, different degrees of full encapsulation‐based on the PVDF‐HFP processing and structuration from the macro to nanometer scale are observed. Additionally, the in situ functionalization of MOF nanoparticles with cysteine is investigated to enhance their adsorption toward HgII. This functionalization enhanced the adsorption capacity of the MOFs from 8 to 30 mg·g−1.

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Self‐Powered, Soft and Breathable Human–Machine Interface Based on Piezoelectric Sensors

Jiang,

Zhang,

Kwon

et al. 2024

Advanced Sensor Research

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Wearable electronics revolutionize human–machine interfaces (HMIs) for robotic or prosthetic control. Yet, the challenge lies in eliminating conventional rigid and impermeable electronic components, such as batteries, while considering the comfort and usability of HMIs over prolonged periods. Herein, a self‐powered, flexible, and breathable HMI is developed based on piezoelectric sensors. This interface is designed to accurately monitor subtle changes in body and muscle movements, facilitating effective communication and control of robotic prosthetic hands for various applications. Utilizing engineered porous structures within the polymeric material, the piezoelectric sensor demonstrates a significantly enhanced sensitivity, flexibility, and permeability, highlighting its outstanding HMI applications. Furthermore, the developed control algorithm enables a single sensor to comprehensively control robotic hands. By successfully translating piezoelectric signals generated from bicep muscle movements into Morse Code, this HMI serves as an efficient communication device. Additionally, the process is demonstrated by illustrating the execution of the daily task of “drinking a cup of water” using the developed HMI to enable the control of a human‐interactive robotic prosthetic hand through the detection of bicep muscle movements. Such HMIs pave the way toward self‐powered and comfortable biomimetic systems, making a significant contribution to the future evolution of prosthetics.

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Solution processing of piezoelectric unconventional structures

Cited by 4 publications

References 296 publications

Effect of Zn–Fe₂O₃ nanomaterials on the phase separated morphologies of polyvinylidene fluoride piezoelectric nanogenerators

Effect of Zn–Fe₂O₃ nanomaterials on the phase separated morphologies of polyvinylidene fluoride piezoelectric nanogenerators

On The Multiscale Structure and Morphology of PVDF‐HFP@MOF Membranes in The Scope of Water Remediation Applications

Self‐Powered, Soft and Breathable Human–Machine Interface Based on Piezoelectric Sensors

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Solution processing of piezoelectric unconventional structures

Cited by 4 publications

References 296 publications

Effect of Zn–Fe2O3 nanomaterials on the phase separated morphologies of polyvinylidene fluoride piezoelectric nanogenerators

Effect of Zn–Fe2O3 nanomaterials on the phase separated morphologies of polyvinylidene fluoride piezoelectric nanogenerators

On The Multiscale Structure and Morphology of PVDF‐HFP@MOF Membranes in The Scope of Water Remediation Applications

Self‐Powered, Soft and Breathable Human–Machine Interface Based on Piezoelectric Sensors

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Product

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Effect of Zn–Fe₂O₃ nanomaterials on the phase separated morphologies of polyvinylidene fluoride piezoelectric nanogenerators

Effect of Zn–Fe₂O₃ nanomaterials on the phase separated morphologies of polyvinylidene fluoride piezoelectric nanogenerators