Investigation of carbon black/silicone elastomer/dimethylsilicone oil composites for flexible strain sensors

Yi, Weijing; Wang, Yangyong; Wang, Guangfeng; Tao, Xiaoming

doi:10.1016/j.polymertesting.2012.03.006

Cited by 87 publications

(75 citation statements)

References 24 publications

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“…In particular, the selection of suitable active materials plays an important role in dominating the performance of sensors. To date, various materials, including carbon nanotubes (CNTs) [11,[26][27][28][29][30], graphene [31][32][33][34][35][36][37][38][39][40], carbon black [41][42][43][44][45], conductive polymers [16,[46][47][48], metal nanoparticles (NPs) and nanowires [21,[49][50][51][52][53][54][55], semiconductors [56,57], have been used as the active components for the fabrication of flexible sensors. Among these materials, metal NPs can be used to fabricate flexible sensors with high sensitivity, but the sensing range and stretchability of these sensors are limited [58].…”

Section: Introductionmentioning

confidence: 99%

“…The multi-scaled macroscopic carbon nanomaterials endow the flexible sensors with high sensitivity, excellent flexibility and good stability as well as desired configurations. Also, low-cost carbon materials, including carbon black and carbon nanofibers, can be used as the conductive filler integrated with elastic materials or fabrics [41,42,44,67], which is a simple, low-cost and large-scalable approach to fabricate flexible sensors. Besides of carbon nanomaterials, other carbon materials derived from bio-materials through a simple pyrolysis process have also been used as the active materials for high-performance flexible sensors [68][69][70].…”

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Advanced carbon materials for flexible and wearable sensors

et al. 2017

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Flexible and wearable sensors have drawn extensive concern due to their wide potential applications in wearable electronics and intelligent robots. Flexible sensors with high sensitivity, good flexibility, and excellent stability are highly desirable for monitoring human biomedical signals, movements and the environment. The active materials and the device structures are the keys to achieve high performance. Carbon nanomaterials, including carbon nanotubes (CNTs), graphene, carbon black and carbon nanofibers, are one of the most commonly used active materials for the fabrication of high-performance flexible sensors due to their superior properties. Especially, CNTs and graphene can be assembled into various multi-scaled macroscopic structures, including one dimensional fibers, two dimensional films and three dimensional architectures, endowing the facile design of flexible sensors for wide practical applications. In addition, the hybrid structured carbon materials derived from natural bio-materials also showed a bright prospect for applications in flexible sensors. This review provides a comprehensive presentation of flexible and wearable sensors based on the above various carbon materials. Following a brief introduction of flexible sensors and carbon materials, the fundamentals of typical flexible sensors, such as strain sensors, pressure sensors, temperature sensors and humidity sensors, are presented. Then, the latest progress of flexible sensors based on carbon materials, including the fabrication processes, performance and applications, are summarized. Finally, the remaining major challenges of carbon-based flexible electronics are discussed and the future research directions are proposed. [56,57], have been used as the active components for the fabrication of flexible sensors. Among these materials, metal NPs can be used to fabricate flexible sensors with high sensitivity, but the sensing range and stretchability of these sensors are limited [58]. Besides, due to the limited chemical stability and reproducibility of metal nanowires, it is challenging to fabricate stable sensors using metal nanowires [10]. Similarly, conductive polymers with poor stability and conductivity are also difficult to be used for the fabrication of high-performance sensors [59]. In contrast, carbon materials are one of the most commonly investigated materials, especially CNTs and graphene (including graphene oxide (GO) and reduced graphene oxide (rGO)), due to their remarkable mechanical, electrical and thermal properties. To implement macroscopic applications, CNTs and graphene with superior properties in microscopic level should be converted into macroscopic functional assemblies, such as one dimensional (1D) fibers or yarns [60,61], two dimensional (2D) films or sheets [62,63], three dimensional (3D) architectures [64][65][66] (Fig. 1). The multi-scaled macroscopic carbon nanomaterials endow the flexible sensors with high sensitivity, excellent flexibility and good stability as well as desired configurations. Also, lo...

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Section: Introductionmentioning

confidence: 99%

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Advanced carbon materials for flexible and wearable sensors

et al. 2017

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“…Among the CMs, carbon fiber (CF) 11–13 is a very attractive substrate for electrical signal transduction in miniaturized electrochemical sensors due to the unique advantageous features such as the small dimensions (5–30 μm), low capacitive current, thermal stability, superior mechanical strength, light weight with a specific strength (strength/density) that can be produced from a roll-to-roll process 14 . All these merits are advantageous when CF serves as the substrate in the fabrication of sensors such as strain 15 , pressure 16 , chemical 17,18 , as well as optical and humidity 19 , and MEMS for harvesting energy devices and MEMS scanning micromirror arrays 20 .…”

Section: Introductionmentioning

confidence: 99%

Carbon fiber doped thermosetting elastomer for flexible sensors: physical properties and microfabrication

Khosla

Shah

Shiblee

et al. 2018

Sci Rep

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We have developed conductive microstructures using micropatternable and conductive hybrid nanocomposite polymer. In this method carbon fibers (CFs) were blended into polydimethylsiloxane (PDMS). Electrical conductivities of different compositions were investigated with various fiber lengths (50–250 μm), and weight percentages (wt%) (10–60 wt%). Sample composites of 2 cm × 1 cm × 500 μm were fabricated for 4-point probe conductivity measurements. The measured percolation thresholds varied with length of the fibers: 50 wt% (307.7 S/m) for 50 µm, 40 wt% (851.1 S/m) for 150 µm, and 30 wt% (769.23 S/m) for 250 μm fibers. The conductive composites showed higher elastic modulus when compared to that of PDMS.

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“…Multifunctional polymer composites employing carbon fillers have attracted widespread attention [28][29][30][31][32][33][34][35][36]. The typical nano-carbon materials, 1D CNT and 2D GRN, which have attracted tremendous attention in the field of polymer nanocomposites due to their unprecedented properties, are used as conducting filler to induce a considerable improvement in the mechanical, thermal and electrical properties of the resulting graphene/polymer nanocomposites at very low loading contents.…”

Section: Introductionmentioning

confidence: 99%