Elastically Stretchable Insulation and Bilevel Metallization 
and Its Application in a Stretchable RLC Circuit

Harris, J.; Graudejus, Oliver; Wagner, S.

doi:10.1007/s11664-011-1613-1

Cited by 13 publications

(9 citation statements)

References 13 publications

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“…Stretchable radio frequency antennas, which are broadly applicable as mechanically-tunable electronic components 38,39 , are another class of devices that benefit from concepts in fractal design. Fractal antennas have been a topic of interest because they can support multiband operation in spatial scales that are compact relative to the resonant wavelength [40][41][42] .…”

Section: Article Nature Communications | Doi: 101038/ncomms4266mentioning

confidence: 99%

Fractal design concepts for stretchable electronics

et al. 2014

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Stretchable electronics provide a foundation for applications that exceed the scope of conventional wafer and circuit board technologies due to their unique capacity to integrate with soft materials and curvilinear surfaces. The range of possibilities is predicated on the development of device architectures that simultaneously offer advanced electronic function and compliant mechanics. Here we report that thin films of hard electronic materials patterned in deterministic fractal motifs and bonded to elastomers enable unusual mechanics with important implications in stretchable device design. In particular, we demonstrate the utility of Peano, Greek cross, Vicsek and other fractal constructs to yield space-filling structures of electronic materials, including monocrystalline silicon, for electrophysiological sensors, precision monitors and actuators, and radio frequency antennas. These devices support conformal mounting on the skin and have unique properties such as invisibility under magnetic resonance imaging. The results suggest that fractal-based layouts represent important strategies for hard-soft materials integration.

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Section: Article Nature Communications | Doi: 101038/ncomms4266mentioning

confidence: 99%

Fractal design concepts for stretchable electronics

et al. 2014

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“…6,10,11 The former has limits in terms of the anisotropic stretchable properties, and the fabrication process required for flexible inorganic materials is typically complex. 12 The latter provides isotropically stretchable materials, and the fabrication processes are simpler. This method can be classified into two categories: techniques that create patterned stretchable conductors consisting of patterned conductive material on a stretchable material, 11,13,14 and techniques that create composites of conductive fillers with a stretchable matrix.…”

Section: Introductionmentioning

confidence: 99%

“…The methods used in these studies can be classified into two types . The first involves structural development of inorganic conductive materials; − the second involves mixing a conductive filler with an elastomer. ,, The former has limits in terms of the anisotropic stretchable properties, and the fabrication process required for flexible inorganic materials is typically complex . The latter provides isotropically stretchable materials, and the fabrication processes are simpler.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Electrical Networks of Stretchable Conductors with Small Fraction of Carbon Nanotube/Graphene Hybrid Fillers

Oh¹,

Jun²,

Jin

et al. 2016

ACS Appl. Mater. Interfaces

101

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Carbon nanotubes (CNTs) and graphene are known to be good conductive fillers due to their favorable electrical properties and high aspect ratios and have been investigated for application as stretchable composite conductors. A stretchable conducting nanocomposite should have a small fraction of conductive filler material to maintain stretchability. Here we demonstrate enhanced electrical networks of nanocomposites via the use of a CNT-graphene hybrid system using a small mass fraction of conductive filler. The CNT-graphene hybrid system exhibits synergistic effects that prevent agglomeration of CNTs and graphene restacking and reduce contact resistance by formation of 1D(CNT)-2D(graphene) interconnection. These effects resulted in nanocomposite materials formed of multiwalled carbon nanotubes (MWCNTs), thermally reduced graphene (TRG), and polydimethylsiloxane (PDMS), which had a higher electrical conductivity compared with MWCNT/PDMS or TRG/PDMS nanocomposites until specific fraction that is sufficient to form electrical network among conductive fillers. These nanocomposite materials maintained their electrical conductivity when 60% strained.

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“…Recent progress on stretchable conductors with good performance is based on two kinds of approaches. One is to incorporate conductors having specially shaped structures, such as wavy, relaxed, and net-shaped structures, into elastic polymers for prestoring strains. − The other is mixing a conducting material with an elastomer to make elastic conductive composites that can sustain a strain. − The former has limits in terms of the anisotropic stretchable properties, and the fabrication process required for flexible inorganic materials is typically complex . The latter provides isotropically stretchable materials, and the fabrication processes are very simple.…”

Section: Introductionmentioning

confidence: 99%

“…22−26 The former has limits in terms of the anisotropic stretchable properties, and the fabrication process required for flexible inorganic materials is typically complex. 27 The latter provides isotropically stretchable materials, and the fabrication processes are very simple.…”

Section: ■ Introductionmentioning

confidence: 99%

Highly Conductive and Stretchable Ag Nanodendrite-Based Composites for Application in Nanoelectronics

Yin

Yan

et al. 2018

ACS Appl. Nano Mater.

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Stretchable flexible conductive composites have received considerable attention recently. In this study, highly conductive and stretchable composites were synthesized using Ag microflakes (AgMFs), Ag nanodendrites (AgNDs), and thermoplastic polyurethane (TPU). The AgNDs are prepared by a facile replacement reaction between silver nitrate and zinc powder. The AgMFs/AgNDs/TPU flexible conductive composites show excellent electrical (8.28 × 10–5 Ω·cm), mechanical, and flexible properties, which can be bent, twisted, and stretched (elongation at break is as high as 250%). During the deformation process, the AgNDs act as conducting bridges between AgMFs. This resulted in good conductive stability of flexible conductive composites under bending, twisting, and stretching. The significant electromechanical properties are also demonstrated by a simple flexible circuit composed of a light-emitting diode (LED) and the stretchable conductor. The AgMFs/AgNDs/TPU flexible conductive films were bent or twisted 10000 times, and the LED can still work well. Taken together, the AgMFs/AgNDs/TPU flexible conductive composites with outstanding electrical and mechanical properties are especially suitable for the flexible electronics device applications.

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Elastically Stretchable Insulation and Bilevel Metallization and Its Application in a Stretchable RLC Circuit

Cited by 13 publications

References 13 publications

Fractal design concepts for stretchable electronics

Fractal design concepts for stretchable electronics

Enhanced Electrical Networks of Stretchable Conductors with Small Fraction of Carbon Nanotube/Graphene Hybrid Fillers

Highly Conductive and Stretchable Ag Nanodendrite-Based Composites for Application in Nanoelectronics

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