Probing the electrical and dielectric properties of polyaniline multi-walled carbon nanotubes nanocomposites doped in different protonic acids

Paul, Sharon J.; Chandra, Prakash

doi:10.1007/s00289-020-03399-7

Cited by 20 publications

(12 citation statements)

References 35 publications

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“…The poly(dimethylsiloxane) (PDMS) pre-mixture (Dow SYLGARD 184 silicone elastomer) and curing agent were used in the preparation of composites. MWCNTs used were synthesized according to our previous reported work . Ethylene glycol used was AR grade and was purchased from E-Merck.…”

Section: Methodsmentioning

confidence: 99%

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Epidermal Inspired Flexible Sensor with Buckypaper/PDMS Interfaces for Multimodal and Human Motion Monitoring Applications

et al. 2022

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The advancements in the areas of wearable devices and flexible electronic skin have led to the synthesis of scalable, ultrasensitive sensors to detect and differentiate multimodal stimuli and dynamic human movements. Herein, we reveal a novel architecture of an epidermal sensor fabricated by sandwiching the buckypaper between the layers of poly(dimethylsiloxane) (PDMS). This mechanically robust sensor can be conformally adhered on skin and has the perception capability to detect real-time transient human motions and the multimodal mechanical stimuli of stretching, bending, tapping, and twisting. The sensor has feasibility for real-time health monitoring as it can distinguish a wide range of human physiological activities like breathing, gulping, phonation, pulse monitoring, and finger and wrist bending. This multimodal wearable epidermal sensor possesses an ultrahigh gauge factor (GF) of 9178 with a large stretchability of 56%, significant durability for 5000 stretching–releasing cycles, and a fast response/recovery time of 59/88 ms. We anticipate that this novel, simple, and scalable design of a sensor with outstanding features will pave a new way to consummate the requirements of wearable electronics, flexible touch sensors, and electronic skin.

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Section: Methodsmentioning

confidence: 99%

“…MWCNTs used were synthesized according to our previous reported work. 44 Ethylene glycol used was AR grade and was purchased from E-Merck.…”

Section: Methodsmentioning

confidence: 99%

Epidermal Inspired Flexible Sensor with Buckypaper/PDMS Interfaces for Multimodal and Human Motion Monitoring Applications

et al. 2022

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“…MWCNTs were synthesized by the catalytic chemical vapor deposition (CVD) technique. 36 The schematic illustration of the CVD setup is shown in Figure 1a. Here, toluene was used as the carbon source and ferrocene as a precursor to obtain iron (Fe) catalytic particles.…”

Section: Synthesis Of Mwcntsmentioning

confidence: 99%

Sensing Multiwall Carbon Nanotube Film Mediated by a Fano Resonant Terahertz Metasurface

Rane,

Sharma,

Mallick

et al. 2023

ACS Appl. Opt. Mater.

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Multiwalled carbon nanotubes (MWCNTs) synthesized via the chemical vapor deposition technique contain metal catalysts that restrict their applications in the terahertz (THz) regime because of strong absorption of THz radiations. To resolve this issue, we have adopted a unique CVD-based synthesis approach to remove the metal catalysts from the synthesized MWCNTs. Moreover, we have studied the optical parameters of the MWCNT film by employing THz-TDS. To explore the MWCNTs in terahertz photonic devices, we have demonstrated sensing of an MWCNT film utilizing a Fano-resonance-based metasurface. Our studies demonstrate MWCNT sensitivity as high as 8 GHz/RIU with an FoM (figure of merit) value as 89.71 while operating at the Fano mode. Hence, these findings could open up a range of possibilities for practical applications of MWCNTs (low-dimensional materials) in the emerging fields of THz nanophotonics.

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“…16(a), the Au@f-SWNTs hybrid nano ller show high dielectric permittivity value than the others and in Fig. 16(b), pure PANI and CNTs@PANI nanocomposite shows lower dielectric permittivity value as compared to the Au@f-SWNTs hybrid nano ller reinforced PANI nanocomposite due to the dipolar interaction of the PANI molecular chain and the hybrid nano ller surface as well as transfer of charge in between them [87,88,90,91,92].…”

Section: Tga Analysismentioning

confidence: 99%

Synthesis and Characterization of a New Gold Nanoparticles decorated functionalized Carbon Nanotubes Hybrid Nanofillers reinforced Polyaniline Ternary Nanocomposites: Thermal, Dielectric, and Sensing Properties

Shubhadarshinee

Mohapatra

Jali

et al. 2022

Preprint

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The present study deals with the synthesis of gold nanoparticles (AuNPs) reinforced functionalized single-walled carbon nanotubes (f-SWNTs)/multi-walled carbon nanotubes (f-MWNTs) based polyaniline (PANI) ternary nanocomposites, using in situ polymerization process to analyze the thermal, dielectric and sensing properties. The chemical interaction and nanostructure characteristics of the synthesized nanocomposites are studied using ultraviolet-visible (UV-Vis) spectroscopy, Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy, X-ray diffraction (XRD) analysis, and X-ray photoelectron spectroscopy (XPS). The morphological characterizations of the nanocomposites are investigated by scanning electron microscopy (SEM) and field emission scanning electron microscopy (FESEM). The dispersion stability and average size distribution of the nanocomposites are examined by means of dynamic light scattering (DLS) technique. The thermal and dielectric properties of the nanocomposites are carried out by using thermogravimetry-differential scanning calorimetry (TG-DSC) and dielectric relaxation spectroscopy (DRS), respectively. The sensing behavior of the nanocomposites is analyzed through UV-Vis spectroscopy. The thermal, dielectric, and sensing properties of the Au@f-SWNTs and Au@f-MWNTs nanohybrids embedded PANI ternary nanocomposite is significantly increased due to the strong interfacial interactions originated between the hybrid nanofiller and PANI matrix.

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Probing the electrical and dielectric properties of polyaniline multi-walled carbon nanotubes nanocomposites doped in different protonic acids

Cited by 20 publications

References 35 publications

Epidermal Inspired Flexible Sensor with Buckypaper/PDMS Interfaces for Multimodal and Human Motion Monitoring Applications

Epidermal Inspired Flexible Sensor with Buckypaper/PDMS Interfaces for Multimodal and Human Motion Monitoring Applications

Sensing Multiwall Carbon Nanotube Film Mediated by a Fano Resonant Terahertz Metasurface

Synthesis and Characterization of a New Gold Nanoparticles decorated functionalized Carbon Nanotubes Hybrid Nanofillers reinforced Polyaniline Ternary Nanocomposites: Thermal, Dielectric, and Sensing Properties

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