Nanotube film based on single-wall carbon nanotubes for strain sensing

Dharap, Prasad; Li, Zhiling; Nagarajaiah, Satish; Barrera, Enrique V.

doi:10.1088/0957-4484/15/3/026

Cited by 499 publications

(302 citation statements)

References 15 publications

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“…MWCNT-Pluronic buckypaper specimens were fabricated using vacuum filtration (figure 1) [24,42]. An advantage of using vacuum filtration is that the density of film constituents (i.e., nanotubes and polymers) can be precisely controlled.…”

Section: Nanocomposite Fabricationmentioning

confidence: 99%

Carbon nanotube thin film strain sensors: comparison between experimental tests and numerical simulations

Lee¹,

Loh²

2017

Nanotechnology

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Carbon nanotubes can be randomly deposited in polymer thin film matrices to form nanocomposite strain sensors. However, a computational framework that enables the direct design of these nanocomposite thin films is still lacking. The objective of this study is to derive an experimentally validated and two-dimensional numerical model of carbon nanotube-based thin film strain sensors. This study consisted of two parts. First, multi-walled carbon nanotube (MWCNT)-Pluronic strain sensors were fabricated using vacuum filtration, and their physical, electrical, and electromechanical properties were evaluated. Second, scanning electron microscope images of the films were used for identifying topological features of the percolated MWCNT network, where the information obtained was then utilized for developing the numerical model. Validation of the numerical model was achieved by ensuring that the area ratios (of MWCNTs relative to the polymer matrix) were equivalent for both the experimental and modeled cases. Strain sensing behavior of the percolation-based model was simulated and then compared to experimental test results.

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Section: Nanocomposite Fabricationmentioning

confidence: 99%

Carbon nanotube thin film strain sensors: comparison between experimental tests and numerical simulations

Lee¹,

Loh²

2017

Nanotechnology

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“…A study by Dharap et al [4] showed that pure SWCNT films ('bulky paper') can serve as strain sensors if they are bonded to the structural surface as conventional strain sensors.…”

Section: Introductionmentioning

confidence: 99%

An investigative study on application of carbon nanotubes for strain sensing

Khodke¹,

Satishchandra²

2016

Nanosystems: Phys. Chem. Math.

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Traditional strain sensors, such as metal foil gauges, can measure the strains only on the structural surface in designated directions and locations. Hence, there is a need to develop new types of strain sensors which can function on both the micro-and macro-scale, either on the surface or embedded in the structure, and able to behave as multifunctional materials. Owing to its outstanding electrical and mechanical properties carbon nanotubes (CNTs) can be used as strain sensing material. A film (Bucky paper/CNT network) made from multiwalled carbon nanotubes by use of solvent/surfactant and vacuum filtration method is used as strain sensor.The paper discusses the experimental work involving preparation of CNT film sensor specimen, its application on aluminum and brass strips along with conventional foil gauge and subjecting the metal strips to axial loading to measure gauge factor. It was found that CNT film strain sensor shows linear relationship between change in resistance and strain. Furthermore, the gauge factor increases as the film aspect ratio increases, and for the same aspect ratio, a higher gauge factor was observed for brass than aluminum.

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“…Carbon nanotubes (CNTs) have excellent mechanical properties and a wide range of applications, such as structural elements for nano-electromechanical systems and nanocomposites [1,2]. Mechanical behaviors of CNTs or CNTs in various surroundings have been widely investigated by experiments, molecular dynamic simulations and continuum mechanics models [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…CNTs have potential importance in the use as basic elements of nanoscale devices such as chemical and mechanical sensors [2,14]. The reliability of many devices depends critically on the understanding of the responses of CNTs to external loadings, thus studying the dynamic buckling be-havior of MWNTs or MWNTs in an elastic medium is of great importance.…”

Section: Introductionmentioning

confidence: 99%

Dynamic shell buckling behavior of multi-walled carbon nanotubes embedded in an elastic medium

Sun

Liu

Hong

2013

Sci. China Phys. Mech. Astron.

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This paper studies the dynamic shell buckling behavior of multi-walled carbon nanotubes (MWNTs) embedded in an elastic medium under step axial load based on continuum mechanics model. It is shown that, for occurrence of dynamic shell buckling of MWNTs or MWNTs embedded in an elastic medium, the buckling stress is higher than the critical buckling stress of the corresponding static shell buckling under otherwise identical conditions. Detailed results are demonstrated for dynamic shell buckling of individual double-walled carbon nanotubes (DWNTs) or DWNTs embedded in an elastic medium. A phenomenon is shown that DWNTs or embedded DWNTs in dynamic shell buckling are prone to axisymmetric buckling rather than non-axisymmetric buckling. Numerical results also indicate that the axial buckling form shifts from the lower buckling mode to the higher buckling mode with increasing buckling stress, but the buckling mode is invariable for a certain domain of buckling stress. Further, an approximate analytic formula is presented for the buckling stress and the associated buckling wavelength for dynamic axisymmetric buckling of embedded DWNTs. The effect of radii is also examined. Citation:Sun C Q, Liu K X, Hong Y S. Dynamic shell buckling behavior of multi-walled carbon nanotubes embedded in an elastic medium.

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Nanotube film based on single-wall carbon nanotubes for strain sensing

Cited by 499 publications

References 15 publications

Carbon nanotube thin film strain sensors: comparison between experimental tests and numerical simulations

Carbon nanotube thin film strain sensors: comparison between experimental tests and numerical simulations

An investigative study on application of carbon nanotubes for strain sensing

Dynamic shell buckling behavior of multi-walled carbon nanotubes embedded in an elastic medium

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