Conductivity-Dependent Strain Response of Carbon Nanotube Treated Bacterial Nanocellulose

Farjana, Sadia; Toomadj, Farshad; Lundgren, Per; Sanz‐Velasco, Anke; Naboka, Olga; Enoksson, Peter

doi:10.1155/2013/741248

Cited by 29 publications

(17 citation statements)

References 16 publications

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“…The authors found that the strain sensitivity of the fabricated conductive BCs depends on their conductivity and increases upon increasing the conductivity of samples, so that MWCNT/BC with high conductivity shows higher strain sensitivity than DWCNT/BC. 97 Wang versatility, high abundance, flexibility and low cost offered by a porous matrix. 2,133,[141][142][143][144][145] On the other hand, conventional paper also carries some drawbacks such as large surface roughness, optical opaqueness, low mechanicalstrength and low stability in water, which may hinder its broad integration into (opto)electronic devices and sensors.…”

Section: Ncs In Optical (Bio)sensingmentioning

confidence: 99%

Nanocellulose in Sensing and Biosensing

et al. 2017

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Due to its multifunctional character, nanocellulose (NC) is one of the most interesting nature-based nanomaterials and is attracting attention in a myriad of fields such as biomaterials, engineering, biomedicine, opto/electronic devices, nanocomposites, textiles, cosmetics and food products. Moreover, NC offers a plethora of outstanding properties, including inherent renewability, biodegradability, commercial availability, flexibility, printability, low density, high porosity, optical transparency as well as extraordinary mechanical, thermal and physicochemical properties. Consequently, NC holds unprecedented capabilities which are appealing to the scientific, technologic and industrial community. In this review, we highlight how NC is being tailored and applied in (bio)sensing technology, whose results aim at displaying analytical information related to various fields such as clinical/medical diagnostics, environmental monitoring, food 3 safety, physical/mechanical sensing, labeling and bioimaging applications. In fact, NCbased platforms could be considered an emerging technology to fabricate efficient, simple, cost-effective and disposable optical/electrical analytical devices for several (bio)sensing applications including health care, diagnostics, environmental monitoring, food quality control, forensic analysis and physical sensing. We foresee that many of the (bio)sensors which are currently based on plastic, glass or conventional paper platforms will be soon transferred to NC and this generation of (bio)sensing platforms could revolutionize the conventional sensing technology.

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Section: Ncs In Optical (Bio)sensingmentioning

confidence: 99%

Nanocellulose in Sensing and Biosensing

et al. 2017

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“…, meaning that severe agglomerations of MWCNTs exist, which significantly lower the electrical conductivity compared to composites consisting of a fullnetworked CNT/polymer composites [43][44][45]. Note that when the volume fraction of the MWCNTs is high, say 1.0 % in Figure 9, the experimental result is much lower than the prediction due to severe agglomeration of MWCNTs, which has been commonly found in the literature [39,46].…”

Section:  mentioning

confidence: 76%

Experiments and micromechanical modeling of electrical conductivity of carbon nanotube/cement composites with moisture

Jang

Hochstein

Kawashima

et al. 2017

Cement and Concrete Composites

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Carbon nanotube (CNT)/cement composites have been proposed as a multifunctional material for self-sensing and traffic monitoring due to their unique electric conductivity which changes with the application of mechanical load. However, material constituent and environmental factors may significantly affect the potential application of these materials. Therefore, it is necessary to understand an influence of material constituent such as porosity and dispersion of CNT and environmental factor such as moisture on the electrical conductivity of CNT/cement composite. This paper investigates the effect of moisture on the effective electrical conductivity of CNT/cement composites. To prepare the specimens, multi-walled carbon nanotubes (MWCNTs) are well dispersed in cement paste, which is then molded and cured into cubic test specimens. By drying the specimens from the fully saturated state to the fully dry state, the effective electrical conductivity is measured at different moisture contents. As the water in the specimen is replaced by air voids, the electrical conductivity significantly decreases. Different ratios of MWCNTs to cement have been used in this study. Micromechanical models have been used to predict the effective electrical conductivities. A comprehensive model is proposed to take into account the effects of individual material phases on the effective electrical conductivity of CNT/cement composites with moisture effect.

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“…Furthermore, all BC films exhibit significant piezoelectric response (5.0–20 pC N −1 ), allowing BC to be used as a sensing material 85. Farjana et al86 fabricated conductive BC films (thickness of 25–65 µm) by modifying the BC pellicles with double‐walled carbon nanotubes (DWCNTs) and multiwalled carbon nanotubes (MWCNTs), which can be used as strain sensors.…”

Section: D Nanocellulose‐based Products For Sensor Designmentioning

confidence: 99%

Ultrasensitive Physical, Bio, and Chemical Sensors Derived from 1‐, 2‐, and 3‐D Nanocellulosic Materials

Dai

Wang

Zou

et al. 2020

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143

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Sensors are of increasing interest since they can be applied to daily life in different areas from various industrial sectors. As a natural nanomaterial, nanocellulose plays a vital role in the development of novel sensors, particularly in the context of constructing multidimensional architectures. This review summarizes the utilization of nanocellulose including cellulose nanofibers, cellulose nanocrystals, and bacterial cellulose for sensor design, mainly focusing on the influence of nanocellulose on the sensing performance of these sensors. Special attention is paid to nanocellulose in different forms (1D, 2D, and 3D) to highlight the impact of nanocellulose constructed structures. The aim is to provide a critical review on the most recent progress (especially after 2017) related to nanocellulose‐containing sensors, since there are significantly increasing research activities in this area. Moreover, the outlook for the development of nanocellulose‐containing sensors is also provided at the end of this work.

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Conductivity-Dependent Strain Response of Carbon Nanotube Treated Bacterial Nanocellulose

Cited by 29 publications

References 16 publications

Nanocellulose in Sensing and Biosensing

Nanocellulose in Sensing and Biosensing

Experiments and micromechanical modeling of electrical conductivity of carbon nanotube/cement composites with moisture

Ultrasensitive Physical, Bio, and Chemical Sensors Derived from 1‐, 2‐, and 3‐D Nanocellulosic Materials

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