A Comprehensive Review on Carbon Nanotubes Based Smart Nanocomposites Sensors for Various Novel Sensing Applications

Rao, Rajani Kant; Gautham, S.; Sasmal, Saptarshi

doi:10.1080/15583724.2024.2308889

Cited by 11 publications

(2 citation statements)

References 290 publications

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“…It is observed as expected that, as the number of the printed layers increases, the resistance of the film decreases, for instance from 9.73, 4.53, 3.64, and 1.97 M

for 5, 10, 15, and 20 layers, respectively. This is referred to as the increase in the conductive paths formed by the CNTs between the end sides of the coils and therefore the formation of a 3D dense network that lowers the whole resistance of the thin film [ 7 , 11 , 12 , 14 , 39 ].…”

Section: Resultsmentioning

confidence: 99%

“…Carbon nanotubes (CNTs) are a promising nanomaterial for strain sensors because of their outstanding mechanical and electrical properties; also, it possesses a high aspect ratio and very low density [ 3 , 4 , 5 , 6 ]. Enormous studies showed the feasibility of using CNTs-based thin films for strain sensing, their unique physical mechanism for measuring strain is based on how electrical resistance changes in response to applied mechanical stress, allowing for accurate and reliable measurements [ 7 , 8 , 9 , 10 ]. Generally speaking, when the CNT thin films are under applied strain force, an increase in the resistance of the film is observed.…”

Section: Introductionmentioning

confidence: 99%

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Inkjet-Printed Multiwalled Carbon Nanotube Dispersion as Wireless Passive Strain Sensor

Benchirouf,

Kanoun

2024

Sensors

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In this study, a multiwalled carbon nanotube (MWCNT) dispersion is used as an ink for a single-nozzle inkjet printing system to produce a planar coil that can be used to determine strain wirelessly. The MWCNT dispersion is non-covalently functionalized by dispersing the CNTs in an anionic surfactant, namely sodium dodecyl sulfate (SDS). The fabrication parameters, such as sonication energy and centrifugation time, are optimized to obtain an aqueous suspension suitable for an inkjet printer. Planar coils with different design parameters are printed on a flexible polyethylene terephthalate (PET) polymer substrate. The design parameters include a different number of windings, inner diameter, outer diameter, and deposited layers. The electrical impedance spectroscopy (EIS) analysis is employed to characterize the printed planar coils, and an equivalent electrical circuit model is derived based on the results. Additionally, the radio frequency identification technique is utilized to wirelessly investigate the read-out mechanism of the printed planar MWCNT coils. The complex impedance of the inductively coupled sensor undergoes a shift under strain, allowing for the monitoring of changes in resonance frequency and bandwidth (i.e., amplitude). The proposed wireless strain sensor exhibits a remarkable gauge factor of 22.5, which is nearly 15 times higher than that of the wireless strain sensors based on conventional metallic strain gauges. The high gauge factor of the proposed sensor suggests its high potential in a wide range of applications, such as structural health monitoring, wearable devices, and soft robotics.

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“…It is observed as expected that, as the number of the printed layers increases, the resistance of the film decreases, for instance from 9.73, 4.53, 3.64, and 1.97 M

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Inkjet-Printed Multiwalled Carbon Nanotube Dispersion as Wireless Passive Strain Sensor

Benchirouf,

Kanoun

2024

Sensors

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Enhancing durable electrical conductivity in multi‐walled carbon nanotubes‐epoxy composites via laser repetition rate nanojoining for flexible electronics

Barayavuga,

Jianlei,

wei

et al. 2024

J of Applied Polymer Sci

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With the development of nanotechnology, laser matter interaction has become intriguing for many applications, including the manufacturing of flexible electronics to improve interface behaviors. Employing high laser repetition rate nanojoining transfer patterning, this study ensures the robust and consistent stability of electrical properties of MWCNTs. This procedure meticulously eliminates contaminants from the interface between flexible PET substrates and carbon nanotube‐containing epoxy, significantly influencing the degree of alteration in composite material and interface behaviors. By increasing the laser repetition rate from the original sample to the sample irradiated by a laser with a repetition rate of 80 kHz, the defect concentration in carbon nanotubes decreases from 0.448 × 106/nm2 to 0.39376 × 106/nm2, respectively. The relationship between defect concentration and electrical conductivity in semiconductor carbon nanotubes under laser irradiation is multifaceted and context‐dependent. Optimizing the laser repetition rate is crucial in defining the kind and density of semiconductor carbon nanotubes. This study found an electrical conductivity of 3.6799 × 10−4 S/m at a laser repetition rate of 80 kHz. Laser ablation nanojoining with a high laser repetition rate is poised to become a key recycling method for plastic materials in future industries. When MWCNTs are used in processing new materials, this method not only enhances the electrical and mechanical properties of recycled plastics but also creates high‐performance composites with added value. Additionally, the quick nature of this process helps minimize toxicity in material processing by reducing exposure time and the need for harmful chemicals. These composites exhibit superior properties suitable for advanced applications such as flexible electronics, sensors, and nanocomposite materials, contributing to both sustainability and economic value in various industrial sectors.

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Experimental and numerical simulation studies of electrical resistance of cementitious materials under varying temperature history

Liang,

Song,

Luo

et al. 2024

Construction and Building Materials

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A Comprehensive Review on Carbon Nanotubes Based Smart Nanocomposites Sensors for Various Novel Sensing Applications

Cited by 11 publications

References 290 publications

Inkjet-Printed Multiwalled Carbon Nanotube Dispersion as Wireless Passive Strain Sensor

Inkjet-Printed Multiwalled Carbon Nanotube Dispersion as Wireless Passive Strain Sensor

Enhancing durable electrical conductivity in multi‐walled carbon nanotubes‐epoxy composites via laser repetition rate nanojoining for flexible electronics

Experimental and numerical simulation studies of electrical resistance of cementitious materials under varying temperature history

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