Super Elastic Optical Fibers Sensors

Qu, Yunpeng; Bartolomei, Nicola; Lagier, Maxime; Nguyen‐Dang, Tung; Page, A.G.; Yan, Wei; Gupta, Tapajyoti Das; Sorin, Fabien

doi:10.1364/ofs.2018.the66

Cited by 3 publications

(4 citation statements)

References 10 publications

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“…Experiments made during this research have shown that brittleness exhibited by PMMA optical fibres makes the fabrication of PMMA super-coils very difficult. A relatively large bend radius required for PMMA macro-bend optical sensors instigated by stiffness of the material, causes limited macro-bend losses, therefore, small detection range and poor sensitivity [25][26][27]. Another issue of PMMA, also connected with the large stiffness of the material is that such sensors cannot be significantly or repeatedly deformed without damaging their structure.…”

Section: Methodsmentioning

confidence: 99%

Strain and temperature sensors made from fishing lines

Stanojevic¹,

Chauhan²

2022

Eng. Res. Express

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Soft and flexible sensors are demanded in a wide variety of wearables and soft-robotic applications. We designed and developed novel integrated strain and temperature sensors using super-coiled transparent polymer fibres as an optical waveguide by exploiting changes in macro-bending optical losses induced by strain or heat. Polymers used in this research such as nylon and fluorocarbon are shaped as super-coils. The customized optical couplings were designed that can sustain tension induced by axial strain force or thermal stress (entropic spring effect). A customized method of transmission and measurement of the optical signal transferred through a super-coiled polymeric waveguide was designed to reduce attenuation losses. Transmitted optical signal were recorded in the . Changes in the measured transmitted optical signal were recorded and comparedfor transparent mono-filament nylon fibre fishing line and fluorocarbon fibre fishing line. The trends of the measured parameters registered during the testing period showed a variation of ~2%, good linearity and repeatability, however with minor hysteresis in the range of ~4% for nylon and in the range of ~2.5% for fluorocarbon. Limited optical characteristics of these materials were compensated and substituted by high sensitivity introduced by a small macro-bend radius. These sensing devices combine high sensitivity with large comparative strain and a wide range of temperatures. Polymers used in this research exhibit the potential for use in SCP waveguide-based soft robotic sensors. Measured reaction times validate the potential of these sensors in measurements of moderate or slow speed processes. These sensing devices also combine a simple manufacturing process that uses abundant and cost-effective materials with a wide array of potential applications.

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Section: Methodsmentioning

confidence: 99%

Strain and temperature sensors made from fishing lines

Stanojevic¹,

Chauhan²

2022

Eng. Res. Express

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“…Nguyen-Dang et al [86] introduced a cantilever-like design in which a freestanding electrically conductive polymer composite film bends under an applied pressure into a micro-electromechanical fiber for compression sensing, as shown in Lausanne in Switzerland. [87][88][89][90][91][92][93] They first investigated the complex shear viscosity as well as the storage and loss moduli of some thermoplastics commonly used as claddings for thermal drawing.…”

Section: Electronic Fibers For Deformation Sensingmentioning

confidence: 99%

“…Recently, a deep investigation of which materials constitute suitable elastic claddings through understanding their rheological properties has been performed by Prof. Fabien Sorin's group at the École Polytechnique Fédérale de Lausanne in Switzerland. [87][88][89][90][91][92][93] They first investigated the complex shear viscosity as well as the storage and loss moduli of some thermoplastics commonly used as claddings for thermal drawing. They discovered that a stable flow in the viscous regime can be identified by a temperature window in which the loss modulus changes slowly with temperature, crossing over the storage modulus that rapidly decreases, as shown by the rheological characterization in Figure 6b (middle).…”

Section: Electronic Fibers For Deformation Sensingmentioning

confidence: 99%

“…Despite decades of research however, elastomeric materials that can be used as fiber claddings in the field of thermal drawing have not been identified. Recently, a deep investigation of which materials constitute suitable elastic claddings through understanding their rheological properties has been performed by Prof. Fabien Sorin's group at the École Polytechnique Fédérale de Lausanne in Switzerland . They first investigated the complex shear viscosity as well as the storage and loss moduli of some thermoplastics commonly used as claddings for thermal drawing.…”

Section: Fiber Electronics In Sensing Applicationsmentioning

confidence: 99%

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Recent Progress and Perspectives of Thermally Drawn Multimaterial Fiber Electronics

et al. 2019

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Fibers are the building blocks of a broad spectrum of products from textiles to composites, and waveguides to wound dressings. While ubiquitous, the capabilities of fibers have not rapidly increased compared to semiconductor chip technology, for example. Recognizing that fibers lack the composition, geometry, and feature sizes for more functions, we set out years ago to explore the boundaries of fiber functionality. Our approach focused on a particular form of fiber production, thermal-drawing from a preform. This process has been used for producing single material fibers, but by combining metals, insulators, and semiconductors all within a single strand of fiber, an entire world of functionality in fibers has emerged. Fibers with optical, electrical, acoustic, or optoelectronic functionalities can be produced at scale from relatively easy-to-assemble macroscopic preforms. Two significant opportunities now present themselves. First, can we expect that fiber functions escalate in a predictable manner, creating the context for a "Moore's Law" analogue in fibers? Second, as fabrics occupy an enormous surface around our bodies, could fabrics offer valuable service to augment the human body? Towards answering these questions, we detail the materials, performance, and limitations of thermally-drawn fibers in different electronic applications and envision their potential in new fields.

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