Polymer-induced orientation of nanowires under electric fields

Arenas-Guerrero, Paloma; Delgado, A.V.; Ahualli, Silvia; Jiménez, María Luisa Gómez

doi:10.1016/j.jcis.2021.01.098

Cited by 9 publications

(11 citation statements)

References 72 publications

(90 reference statements)

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“…The mean length of their distribution is 2.0 ± 0.9 μm. They have a polyvinylpyrrolidone ((C 6 H 9 NO) n , PVP) thin coating that gives them a small negative charge, preventing their aggregation. , …”

Section: Methodsmentioning

confidence: 99%

“…In the case of flexible coils such as polymers, they can be deformed by the action of the electric field. However, it has been demonstrated that for moderate field strengths and high frequency the polymer is not perturbed. , Furthermore, in ref a synergy was observed between polymer stretching and particles alignment, but this effect was found to disappear at frequencies above 1–10 kHz, where the polymer is not perturbed.…”

Section: Theoretical Backgroundmentioning

confidence: 96%

“…They have a polyvinylpyrrolidone ((C 6 H 9 NO) n , PVP) thin coating that gives them a small negative charge, preventing their aggregation. 19,43 The preparation of L-Agnws (average length 14 μm) was performed following the procedure in ref 53. NaMt was obtained by homoionization of bentonite (purchased from Sigma-Aldrich, USA).…”

Section: ■ Theoretical Backgroundmentioning

confidence: 99%

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Electro-optical Study of the Anomalous Rotational Diffusion in Polymer Solutions

et al. 2023

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Brownian diffusion of spherical nanoparticles is usually exploited to ascertain the rheological properties of complex media. However, the behavior of the tracer particles is affected by a number of phenomena linked to the interplay between the dynamics of the particles and polymer coils. For this reason, the characteristic lengths of the dispersed entities, depletion phenomena, and the presence of sticking conditions have been observed to affect the translational diffusion of the probes. On the other hand, the retardation effect of the host fluid on the rotational diffusion of nonspherical particles is less understood. We explore the possibility of studying this phenomenon by analyzing the electro-orientation of the particles in different scenarios in which we vary the ratio between the particle and polymer characteristic size, and the geometry of the particles, including both elongated and oblate shapes. We find that the Stokes–Einstein relation only applies if the radius of gyration of the polymer is much shorter than the particle size and when some repulsive interaction between both is present.

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Section: Methodsmentioning

confidence: 99%

Section: Theoretical Backgroundmentioning

confidence: 96%

Section: ■ Theoretical Backgroundmentioning

confidence: 99%

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Electro-optical Study of the Anomalous Rotational Diffusion in Polymer Solutions

et al. 2023

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“…, 1 Hz) can facilitate the formation of highly oriented AgNWs under the assistance of orderly DNA coils formed by the application of an electric field. 247…”

Section: Enhancement In the Electrical Conductivity Of Agnw Networkmentioning

confidence: 99%

“…They noticed that a lowfrequency AC electric field (e.g., 1 Hz) can facilitate the formation of highly oriented AgNWs under the assistance of orderly DNA coils formed by the application of an electric field. 247 In addition, magnetic field-assisted assembly has been used to obtain highly ordered AgNWs. The nonmagnetic AgNWs need further modification to respond to the external magnetic field.…”

Section: Morphology and Controlled Assembly Of Agnwsmentioning

confidence: 99%

Advances in constructing silver nanowire-based conductive pathways for flexible and stretchable electronics

2022

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Electric Field‐induced Orientation of Carbon Nanomaterials in Dispersions

Du,

Zheng,

et al. 2024

ChemistrySelect

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Carbon nanomaterials (CNMs) exhibit excellent performance and potential application value in optical, electric, magnetic and thermal owing to their unique low dimensional structures, high specific surface areas and excellent electrical conductivities, however, the random orientation of CNMs in polymer dispersions negatively affects their optimal performances. Herein, the orientation of CNMs induced by an electric field in dispersions was investigated. The arrangement of carbon black, carbon nanotubes and graphite nanoplatelets in solvents under an electric field was characterized using a stereoscopic microscope. The effects of solvent type, nanomaterial concentration and electric field conditions on the orientation of the CNMs were systematically investigated. The results showed that the CNMs generally exhibited good electric field‐induced orientations in solvents with a low relative dielectric constant. The orientation structure resulting from using an appropriate CNMs concentration was relatively uniform and continuous. In particular, a more regular orientation structure was achieved upon applying an electric field (100 V/mm; 1000 Hz) for 30 s. Interestingly, well‐oriented CNMs in a solvent can also orient in polymer dispersions that are soluble in such a solvent. This extension of the orientation of CNMs from solvents to polymer dispersion systems provides a novel idea for preparing high‐performance composites.

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Polymer-induced orientation of nanowires under electric fields

Cited by 9 publications

References 72 publications

Electro-optical Study of the Anomalous Rotational Diffusion in Polymer Solutions

Electro-optical Study of the Anomalous Rotational Diffusion in Polymer Solutions

Advances in constructing silver nanowire-based conductive pathways for flexible and stretchable electronics

Electric Field‐induced Orientation of Carbon Nanomaterials in Dispersions

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