Revisit to three-dimensional percolation theory: Accurate analysis for highly stretchable conductive composite materials

Kim, Sang Woo; Choi, Seong-Dae; Oh, Eun‐Suok; Byun, Jung Ick; Kim, Hyun-Jong; Lee, Byeongmoon; Lee, Seung Hwan; Hong, Yongtaek

doi:10.1038/srep34632

Cited by 28 publications

(20 citation statements)

References 40 publications

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“…In the 3D percolation theory, the electrical conductivity of the conductive composite is calculated by the two equations below for the initial and the elongated states. The nanofiller volume mainly determines the nanocomposite conductivity fraction: 163,164…”

Section: Recent Advances In the Stretchable 1d Conductormentioning

confidence: 99%

Stretchable One-Dimensional Conductors for Wearable Applications

Nie

Hsieh

et al. 2022

ACS Nano

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Continuous, one-dimensional (1D) stretchable conductors have attracted significant attention for the development of wearables and soft-matter electronics. Through the use of advanced spinning, printing, and textile technologies, 1D stretchable conductors in the forms of fibers, wires, and yarns can be designed and engineered to meet the demanding requirements for different wearable applications. Several crucial parameters, such as microarchitecture, conductivity, stretchability, and scalability, play essential roles in designing and developing wearable devices and intelligent textiles. Methodologies and fabrication processes have successfully realized 1D conductors that are highly conductive, strong, lightweight, stretchable, and conformable and can be readily integrated with common fabrics and soft matter. This review summarizes the latest advances in continuous, 1D stretchable conductors and emphasizes recent developments in materials, methodologies, fabrication processes, and strategies geared toward applications in electrical interconnects, mechanical sensors, actuators, and heaters. This review classifies 1D conductors into three categories on the basis of their electrical responses: (1) rigid 1D conductors, (2) piezoresistive 1D conductors, and (3) resistance-stable 1D conductors. This review also evaluates the present challenges in these areas and presents perspectives for improving the performance of stretchable 1D conductors for wearable textile and flexible electronic applications.

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Section: Recent Advances In the Stretchable 1d Conductormentioning

confidence: 99%

Stretchable One-Dimensional Conductors for Wearable Applications

Nie

Hsieh

et al. 2022

ACS Nano

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“…The other mechanism utilizes the changing resistivity of the resistor material, such as the conductive particle–polymer composite. When a force is applied to the conductive particle–polymer composite, the effective resistance value is lowered as the inter-particle spacing between the conductive particles is reduced and the contact area is increased to improve the electrical path (i.e., percolation effect) [ 101 , 102 , 103 ]. Typically, piezoresistive pressure sensors have the following advantages: low cost, simple structure and working principle, and a relatively easy fabrication process.…”

Section: Mechanism Development and Applications Of Biodegradable Pres...mentioning

confidence: 99%

Micro-/Nano-Structured Biodegradable Pressure Sensors for Biomedical Applications

Shin

Lee

et al. 2022

Biosensors

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The interest in biodegradable pressure sensors in the biomedical field is growing because of their temporary existence in wearable and implantable applications without any biocompatibility issues. In contrast to the limited sensing performance and biocompatibility of initially developed biodegradable pressure sensors, device performances and functionalities have drastically improved owing to the recent developments in micro-/nano-technologies including device structures and materials. Thus, there is greater possibility of their use in diagnosis and healthcare applications. This review article summarizes the recent advances in micro-/nano-structured biodegradable pressure sensor devices. In particular, we focus on the considerable improvement in performance and functionality at the device-level that has been achieved by adapting the geometrical design parameters in the micro- and nano-meter range. First, the material choices and sensing mechanisms available for fabricating micro-/nano-structured biodegradable pressure sensor devices are discussed. Then, this is followed by a historical development in the biodegradable pressure sensors. In particular, we highlight not only the fabrication methods and performances of the sensor device, but also their biocompatibility. Finally, we intoduce the recent examples of the micro/nano-structured biodegradable pressure sensor for biomedical applications.

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“…[39], we used the method of Padé approximants for estimating the concentration dependence of the effective elastic modulus of MAE for the two-dimensional case and obtained an analytical expression for pc(H). Recently, a strain-dependent percolation threshold in highly stretchable conductive composite materials has been reported [40].…”

Section:  mentioning

confidence: 99%

Theoretical method for calculation of effective properties of composite materials with reconfigurable microstructure: Electric and magnetic phenomena

Snarskiı̆

Zorinets

Shamonin

et al. 2019

Physica A: Statistical Mechanics and its Applications

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We propose a theoretical approach for calculating effective electric and magnetic properties of composites with field-dependent restructuring of the filler. The theory combines the Bruggeman-Landauer approximation extended to a field-dependent (variable) percolation threshold with the approximate treatment of nonlinearity of material properties. Theoretical results are compared with experiments on magnetorheological elastomers, which in the context of investigated phenomena are often called magnetoactive elastomers (MAEs). In MAEs with soft polymer matrices, the mutual arrangement of inclusions changes in an applied magnetic field. This reorganization of the microstructure leads to unconventionally large changes of electrical and magnetic properties. Obtained theoretical results describe observed phenomena in MAEs well. Qualitative agreement between theory and experiment is demonstrated for the magnetodielectric effect. In the case of magnetic permeability, quantitative agreement is achieved. The theoretical approach presented can be useful for development of field-controlled smart materials and design of smart structures on their basis, because the field dependence of physical properties can be predicted.

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Revisit to three-dimensional percolation theory: Accurate analysis for highly stretchable conductive composite materials

Cited by 28 publications

References 40 publications

Stretchable One-Dimensional Conductors for Wearable Applications

Stretchable One-Dimensional Conductors for Wearable Applications

Micro-/Nano-Structured Biodegradable Pressure Sensors for Biomedical Applications

Theoretical method for calculation of effective properties of composite materials with reconfigurable microstructure: Electric and magnetic phenomena

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