Strain dependence of electrical resistance in carbon nanotube yarns

Abot, Jandro L.; Alosh, Tareq; Belay, Kalayu

doi:10.1016/j.carbon.2013.12.077

Cited by 52 publications

(47 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Accordingly, the GF of the as-made yarn was found approximately 0.15, which is one order of magnitude smaller than that of most conventional metals used in wiring application and two orders of magnitude below that of some common semiconductor materials [25], [26]. The measured GF of the as-made yarn is in good agreement with a previous result [17]. This means that the as-made yarn could well retain its resistance under tensile strain.…”

Section: Resultssupporting

confidence: 80%

Electrically Stable Carbon Nanotube Yarn Under Tensile Strain

Nguyen

Dinh

Phan

et al. 2017

IEEE Electron Device Lett.

View full text Add to dashboard Cite

Abstract-We report a highly stable electrical conductance of a compact and well-oriented carbon nanotube yarn under tensile strain. The gauge factor of the yarn was found to be extremely small of approximately 0.15 thanks to the improvements in the dry spinning process, including multi-web spinning and heat treatment. The threshold strain εs, below which the yarn retains its electrical conductance stability, has been also determined to be approximately 15×10 3 ppm. Owing to its highly stable resistance under mechanical strain, the yarn has a good potential as a wiring material for niche applications, where light weight and resistance stability are required.

show abstract

Section: Resultssupporting

confidence: 80%

Electrically Stable Carbon Nanotube Yarn Under Tensile Strain

Nguyen

Dinh

Phan

et al. 2017

IEEE Electron Device Lett.

View full text Add to dashboard Cite

show abstract

“…This CNT yarn has a diameter of about 30 microns and the mechanical and electrical properties are similar to those provided elsewhere [5]. A schematic of the strain gauge configuration including the piezoresistive layer containing the CNT yarns, the substrate composed of a polymeric material, and the electrodes is shown in Figure 1b.…”

Section: Sensor Concepts and Configurationsmentioning

confidence: 99%

“…The sensitivity, given by the output voltage of the strain gauge sensor, was studied by varying a series of geometrical and material parameters. This mechanical-electrical analysis requires knowing three material properties including the elastic modulus, the electrical resistivity and the piezoresistive response of the CNT yarn [5]. The former two are constant and the latter is nonlinear.…”

Section: Formulation and Numerical Implementationmentioning

confidence: 99%

“…Carbon nanotube (CNT) yarns are micron-size fibers that contain thousands of intertwined carbon nanotubes in their cross sections and exhibit piezoresistance characteristics that can be tapped for sensing purposes [1,2]. The use of strain gauge sensors composed of CNT yarn may offer a feasible and practical measurement of strain in polymeric and composite materials [3][4][5]. Piezoresistive strain gauge sensors are typically made of a piezoresistive membrane layer attached to a flexible substrate layer.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Strain Gauge Sensor Comprised of Carbon Nanotube Yarn: Concept and Modeling

Abot

Silva

Kiyono³

et al. 2014

Proceedings of the 13th International Symposium on Multiscale, Multifunctional and Functionally Graded Materials

Self Cite

View full text Add to dashboard Cite

Carbon nanotube yarns are micron-size fibers that contain thousands of intertwined carbon nanotubes in their cross sections and exhibit piezoresistance characteristics that can be tapped for sensing purposes. Sensor yarns can be integrated in polymeric and composite materials to measure strain through resistance measurements without adding weight or altering the integrity of the host material. This paper includes the details of novel strain gauge sensor configurations made of carbon nanotube yarn and the modeling of their piezoresistive response using parametric optimization schemes that maximize the sensor' sensitivity to mechanical loading. The effect of several sensor configuration parameters are discussed including the angle and separation of the carbon nanotube yarns within the sensor, and also the mechanical properties of the CNT yarns.

show abstract

“…After fabrication, the CNT yarn is spun around a spool for storing and handling purposes. Piezoresistivity is a unique and the most important property of the CNT yarns for their application as sensors [11][12][13][14][15][16][17][18]. From a microstructural perspective, for low strain levels (< 2 %), metallic nanotubes play a vital role in the change of the electrical resistance [1,11].…”

Section: Introductionmentioning

confidence: 99%

Piezoresistive Response of Integrated CNT Yarns under Compression and Tension: The Effect of Lateral Constraint

Anike¹,

Le²,

Brodeur³

et al. 2017

Preprint

Self Cite

View full text Add to dashboard Cite

Carbon nanotube (CNT) yarns are fiber-like materials that exhibit excellent mechanical, electrical and thermal properties. More importantly, they exhibit a piezoresistive response that can be tapped for sensing purposes. The objective of this study is to determine experimentally the piezoresistive response of CNT yarns that are embedded in a polymeric medium while subjected to either compression or tension, and compare it with that of the free or unconstrained CNT yarns. The rationale for this study is the need to know the piezoresistive response of the CNT yarn while in a medium, which provides a lateral constraint to the CNT yarn thus mimicking the response of integrated CNT yarn sensors. The experimental program includes the fabrication of samples and their electromechanical characterization. The CNT yarns are integrated in polymeric beams and subjected to four-point bending allowing the determination of their response under tension and compression. The electromechanical data from a combined Inductance-Capacitance-Resistance (LCR) device and a mechanical testing system were used to determine the piezoresistive response of the CNT yarns. At a strain rate of 0.006 min -1 , the gauge factors obtained under tension for a maximum strain of 0.1 % is ~ 29.3 which is higher than ~ 21.2 obtained under compression. The CNT yarn sensor exhibited strain rate dependence with a gauge factor of approximately 23.0 at 0.006 min -1 , in comparison to 19.0 and 1.3, which were obtained at 0.0005 min -1 and 0.003 min -1 , respectively. There is a difference of up to two orders of magnitude in the sensitivity of the constrained CNT yarn under bending with respect to that of the free CNT yarn under uniaxial tension. However, the difference becomes smaller when the constrained CNT yarn was tested under uniaxial tension. This data and information will be used for future modeling efforts and to study the phenomena that occur when CNT yarns are integrated in polymeric and composite materials and structures.

show abstract

Strain dependence of electrical resistance in carbon nanotube yarns

Cited by 52 publications

References 32 publications

Electrically Stable Carbon Nanotube Yarn Under Tensile Strain

Electrically Stable Carbon Nanotube Yarn Under Tensile Strain

Strain Gauge Sensor Comprised of Carbon Nanotube Yarn: Concept and Modeling

Piezoresistive Response of Integrated CNT Yarns under Compression and Tension: The Effect of Lateral Constraint

Contact Info

Product

Resources

About