Flexible fluorinated multi-walled carbon nanotube/polyarylene ether nitrile metacomposites with negative permittivity

2021 ◽  
Author(s):  
Weihua Han ◽  
Feng Gao ◽  
Lingyun Zhou ◽  
Lu Wang ◽  
Xiufu Hua ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Flexible Electronics ◽  
Negative Permittivity ◽  
Polyarylene Ether Nitrile ◽  
Multi Walled Carbon Nanotube

Flexible metacomposite demonstrating negative permittivity has shown promising applications in flexible electronics. In this paper, flexible fluorinated multi-walled carbon nanotube/polyarylene ether nitrile porous metacomposite film (FMWCNT/PEN) with negative permittivity is...

scholarly journals A highly sensitive printed humidity sensor based on a functionalized MWCNT/HEC composite for flexible electronics application

2019 ◽  
Vol 1 (6) ◽  
pp. 2311-2322 ◽  
Author(s):  
Vikram S. Turkani ◽  
Dinesh Maddipatla ◽  
Binu B. Narakathu ◽  
Tahseen S. Saeed ◽  
Sherine O. Obare ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Flexible Electronics ◽  
Humidity Sensor ◽  
Hydroxyethyl Cellulose ◽  
Multi Walled Carbon Nanotube ◽  
Highly Sensitive

Fully printed, functionalized multi-walled carbon nanotube (FMWCNT)/hydroxyethyl cellulose (HEC) composite-based humidity sensor.

Magnetoresistive polyaniline/multi-walled carbon nanotube nanocomposites with negative permittivity

Nanoscale ◽  
2014 ◽  
Vol 6 (1) ◽  
pp. 181-189 ◽  
Author(s):  
Hongbo Gu ◽  
Jiang Guo ◽  
Qingliang He ◽  
Yuan Jiang ◽  
Yudong Huang ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Negative Permittivity ◽  
Multi Walled Carbon Nanotube

Multi-Walled Carbon Nanotube-Alumina Nanocomposites with Dielectric Resonance-Induced Negative Permittivity Behavior

2017 ◽  
Vol 898 ◽  
pp. 1764-1769
Author(s):  
Chuan Bing Cheng ◽  
Run Hua Fan ◽  
Lei Qian ◽  
Zhong Yang Wang ◽  
Pei Tao Xie ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Negative Permittivity ◽  
Pressureless Sintering ◽  
Hopping Conduction ◽  
Practical Application ◽  
Low Aspect Ratio ◽  
Dielectric Resonance ◽  
Testing Frequency ◽  
Multi Walled Carbon Nanotube ◽  
Conductive Mechanism

The multi-walled carbon nanotube/alumina (MWCNTs/Al2O3) nanocomposites embedded with the shortened MWCNTs were prepared by pressureless sintering. The microstructure, conductive behavior and complex permittivity spectra of the composites were investigated. It was found that MWCNTs, which were shortened to low aspect ratio by the controllable acid and ultrasonic treatment, uniformly dispersed in the Al2O3 matrix. A unique dielectric resonance-induced negative permittivity behavior was observed in the composites with high MWCNTs content. The negative magnitude of permittivity was small (~-50) in the testing frequency. The dielectric loss peaks being accompanied by dielectric resonance moved to the higher frequency with increasing MWCNTs content. Those composites underwent a capacitive-inductive transition with increasing frequency and their conductive mechanism was hopping conduction. This work is beneficial to explore the generation mechanism of negative permittivity, and will greatly facilitate the practical application of metamaterials.

scholarly journals Multifunctional Leather Surface Design by Using Carbon Nanotube-Based Composites

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3003
Author(s):  
Maria Stanca ◽  
Carmen Gaidau ◽  
Cosmin-Andrei Alexe ◽  
Ioana Stanculescu ◽  
Silvana Vasilca ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Flexible Electronics ◽  
Light Exposure ◽  
Reactive Oxygen Species Generation ◽  
Attenuated Total Reflection ◽  
Original Research ◽  
Surface Design ◽  
X Ray ◽  
Multi Walled Carbon Nanotube ◽  
Self Cleaning

This paper deals with original research in smart leather surface design for the development of multifunctional properties by using multi-walled carbon nanotube (MWCNT)-based nanocomposites. The conductive properties were demonstrated for both sheepskin and bovine leather surfaces for 0.5% MWCNTs in finishing nanocompositions with prospects for new material design intended for flexible electronics or multifunctional leathers. The photocatalytic properties of bovine leather surface treated with 0.5% MWCNTs were shown against an olive oil stain after visible light exposure and were attributed to reactive oxygen species generation and supported by contact angle measurements in dynamic conditions. The volatile organic compounds’ decomposition and antibacterial tests confirmed the self-cleaning experimental conclusions. Ultraviolet protection factor had excellent values for leather surfaces treated with multi-walled carbon nanotube and the fastness resistance tests showed improved performance compared to control samples. Scanning electron microscopy with energy dispersive X-ray (SEM-EDX), X-ray photoelectron spectroscopy (XPS), and attenuated total reflection-Fourier transform infrared (ATR-FTIR) spectroscopy analysis confirmed the influence of different leather surfaces on MWCNT dispersion with an effect on nanoparticle reactivity and efficiency in self-cleaning properties. Multifunctional leather surfaces were designed and demonstrated through MWCNT-based nanocomposite use under conventional finishing conditions.

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