Electrodes made of multi-wall carbon nanotubes on PVDF-filters have low electrical resistance and are able to record electrocardiograms in humans

Bernal-Martínez, Juan; Seseña-Rubfiaro, Alberto; Godínez-Fernández, Rafael; Aguilar-Elguézabal, A.

doi:10.1016/j.mee.2016.09.006

Cited by 19 publications

(12 citation statements)

References 29 publications

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“…CNT-based pressure sensors can be used in eye surgeries, kidney dialysis machines, respiratory devices, and hospital beds [168,169]. Furthermore, MWCNTs modified by nitric acid-sulfuric acid treatment dispersed in polyvinylpyrrolidone (PVP) are used for the preparation of electroconductive electrodes on polyvinylidene fluoride (PVDF) filters for sensing and taping electrocardiograms [170]. A literature study indicates that CNTs can function as actuators, and that these CNT-based actuators can perform at low voltages and high temperatures up to 350 • C, and in a physiological environment [171,172].…”

Section: Biomedical Applicationsmentioning

confidence: 99%

An Overview of the Recent Progress in the Synthesis and Applications of Carbon Nanotubes

et al. 2019

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Carbon nanotubes (CNTs) are known as nano-architectured allotropes of carbon, having graphene sheets that are wrapped forming a cylindrical shape. Rolling of graphene sheets in different ways makes CNTs either metals or narrow-band semiconductors. Over the years, researchers have devoted much attention to understanding the intriguing properties CNTs. They exhibit some unusual properties like a high degree of stiffness, a large length-to-diameter ratio, and exceptional resilience, and for this reason, they are used in a variety of applications. These properties can be manipulated by controlling the diameter, chirality, wall nature, and length of CNTs which are in turn, synthesis procedure-dependent. In this review article, various synthesis methods for the production of CNTs are thoroughly elaborated. Several characterization methods are also described in the paper. The applications of CNTs in various technologically important fields are discussed in detail. Finally, future prospects of CNTs are outlined in view of their commercial applications.

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Section: Biomedical Applicationsmentioning

confidence: 99%

An Overview of the Recent Progress in the Synthesis and Applications of Carbon Nanotubes

et al. 2019

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“…Probably, carbon nanotubes (CNTs) are among the most studied reinforcements due to their intrinsic characteristics including high aspect ratio, outstanding electrical and mechanical properties, and versatility for surface functionalization. The CNT/PVDF composites enable new applications in different sectors, including membranes for ultrafiltration [3], superhydrophobic surfaces [4] fuel cell electrodes, charge transport layers in sensor systems [5], high energy storage systems [6,7], infrared detectors [8], electromagnetic interference shielding and radar absorbing coatings for military energy systems [9], electrodes for electrocardiograms [10], actuators and pressure sensors [11,12], in-vitro muscle cell growth [13], and structural health monitoring systems [14]. A comprehensive description of the applications of CNT-based PVDF composites can be found in several reviews [15,16].…”

Section: Introductionmentioning

confidence: 99%

Dielectric behavior and electrical conductivity of PVDF filled with functionalized single-walled carbon nanotubes

Puértolas

García-García

Pascual

et al. 2017

Composites Science and Technology

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Polyvinylidene fluoride (PVDF)/ single-walled carbon nanotube (SWCNT) composites are characterized by X-ray diffraction and scanning calorimetry, and studied by dielectric relaxation spectroscopy (DRS) in the temperature range of -75 to 150ºC. The effects of SWCNTs and SWCNT functionalization are analyzed in terms of α and α c relaxation, dielectric permittivity, loss tangent, and AC electrical conductivity. Some small changes are detected in α relaxation with the addition of SWCNTs, and a strong influence of SWCNTs is observed in the other relaxation α c . Below the percolation threshold, the dielectric permittivity of functionalized SWCNT composites increases compared to blank PVDF, without notable changes in the dielectric loss. All the composite systems show an electrical percolation behavior with different thresholds depending on SWCNT functionalization. Threshold concentrations remain nearly unchanged in the whole temperature and frequency ranges. The base PVDF conductivity strongly depends on temperature and frequency, while the maximum conductivity above the percolation remains nearly unchanged (~ 10 -2 S/m) for all the systems, temperatures and frequencies.

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“…However, preliminary experiments reported by our group indicate that the MWCNTs, synthesized by spray pyrolysis, functionalized with acidic treatment and dispersed by PVP, have low electrical resistance and are good electro-conductive materials [14] [15]. Therefore, this MWCNT-PVP composite tested in this work may not block ion currents in neurons.…”

Section: Resultsmentioning

confidence: 86%

Suitability of the Composite Made of Multi Wall Carbon Nanotubes-Polyvinylpyrrolidone for Culturing Invertebrate <i>Helix aspersa</i> Neurons

Bernal-Martínez¹,

Godínez-Fernández²,

Aguilar-Elguézabal³

2017

MSCE

Self Cite

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Carbon nanotubes have been used as scaffolds for tissue engineering. However, the identification of these nanomaterials disperses in biological solutions and their direct interaction with nerve cells is still controversial. The aim of this work is to characterize the topographic and ultra-structural distribution of the composite made of multi wall carbon nanotubes-polyvinylpyrrolidone MWCNTs-PVP, fixing it in paraformaldehyde at 4% and was observed with SEM and CM. Although the nanotubes were not labeled or stained with fluorescent compounds, the MWCNTs-PVP deposited on glass and on nerve cells, was observed by the confocal microscope in the reflection mode. In SEM studies, it was observed that MWCNTs-PVP was attached to the surface on neurons. Moreover, in CM studies, it was possible to observe that MWCNTs-PVP was attached to the neuronal membrane, crossing the cell membrane and getting into the cytoplasm. These results support the hypothesis that carbon nanotubes interact with the neuronal cell membrane and can be useful for neuronal tissue engineering. In addition, these results open new alternatives for toxicological studies, in order to elucidate the cytotoxicity of MWCNTs-PVP composite in neurons and other excitable cells.

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Electrodes made of multi-wall carbon nanotubes on PVDF-filters have low electrical resistance and are able to record electrocardiograms in humans

Cited by 19 publications

References 29 publications

An Overview of the Recent Progress in the Synthesis and Applications of Carbon Nanotubes

An Overview of the Recent Progress in the Synthesis and Applications of Carbon Nanotubes

Dielectric behavior and electrical conductivity of PVDF filled with functionalized single-walled carbon nanotubes

Suitability of the Composite Made of Multi Wall Carbon Nanotubes-Polyvinylpyrrolidone for Culturing Invertebrate <i>Helix aspersa</i> Neurons

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Electrodes made of multi-wall carbon nanotubes on PVDF-filters have low electrical resistance and are able to record electrocardiograms in humans

Cited by 19 publications

References 29 publications

An Overview of the Recent Progress in the Synthesis and Applications of Carbon Nanotubes

An Overview of the Recent Progress in the Synthesis and Applications of Carbon Nanotubes

Dielectric behavior and electrical conductivity of PVDF filled with functionalized single-walled carbon nanotubes

Suitability of the Composite Made of Multi Wall Carbon Nanotubes-Polyvinylpyrrolidone for Culturing Invertebrate &lt;i&gt;Helix aspersa&lt;/i&gt; Neurons

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Suitability of the Composite Made of Multi Wall Carbon Nanotubes-Polyvinylpyrrolidone for Culturing Invertebrate <i>Helix aspersa</i> Neurons