Precision non-contact displacement sensor based on the near-field characteristics of fiber specklegrams

Chen, Wang; Feng, Fu; Chen, Dihan; Lin, Wei; Chen, Shih‐Chi

doi:10.1016/j.sna.2019.06.010

Cited by 36 publications

(10 citation statements)

References 31 publications

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“…Such a resolution figure compares well with the ones estimated in other fiber optics platforms as fiber Bragg gratings and multicore fiber-based displacement sensors [32,33]. Furthermore, the EZNCC algorithm enlarges the measurement range beyond typical fiber speckle-based strain and displacement meters [23,34] by preserving its intrinsic high-sensitivity feature.…”

Section: Fiber Specklegram Analysis and Displacement Sensingsupporting

confidence: 74%

Displacement sensor based on a large-core hollow fiber and specklegram analysis

Osório

Cabral

Fujiwara

et al. 2023

Optical Fiber Technology

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Section: Fiber Specklegram Analysis and Displacement Sensingsupporting

confidence: 74%

Displacement sensor based on a large-core hollow fiber and specklegram analysis

Osório

Cabral

Fujiwara

et al. 2023

Optical Fiber Technology

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“…These non-contact flexible sensors have received a great deal of attention due to their great potential in human–computer interaction, health monitoring, and healthcare, and their influence has grown alongside the expansion of technological services (i.e., smartphones and internet of things), with increasing demand in light of the coronavirus epidemic. Chen et al [ 120 ] developed a speckle map analysis for a new fiber-optic non-contact displacement sensor with an accuracy and repeatability of 10 nm and a range of 3–4 m. The fiber-optic sensor had a bandwidth of ±5 Hz and could precisely record target positions at 100 Hz. High accuracy and repeatability were achieved using the sensitivity of the fiber optic scattergram and rapid change in the electric field in the near-field region.…”

Section: Contact Forms Of Flexible Sensorsmentioning

confidence: 99%

The Progress of Research into Flexible Sensors in the Field of Smart Wearables

Yin

Guo

Hong

et al. 2022

Sensors

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In modern society, technology associated with smart sensors made from flexible materials is rapidly evolving. As a core component in the field of wearable smart devices (or ‘smart wearables’), flexible sensors have the advantages of excellent flexibility, ductility, free folding properties, and more. When choosing materials for the development of sensors, reduced weight, elasticity, and wearer’s convenience are considered as advantages, and are suitable for electronic skin, monitoring of health-related issues, biomedicine, human–computer interactions, and other fields of biotechnology. The idea behind wearable sensory devices is to enable their easy integration into everyday life. This review discusses the concepts of sensory mechanism, detected object, and contact form of flexible sensors, and expounds the preparation materials and their applicability. This is with the purpose of providing a reference for the further development of flexible sensors suitable for wearable devices.

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“…The femtosecond laser has been a useable approach in microchannel fabrication with high resolution. 32 The drilling or ablation depth of femtosecond on commonly used microchannel materials such as PMMA, glass, or PDMS is several tens of microns 33–35 which is enough to drill a thin mold to make a vent hole at the channel end. The drilled holes on PDMS can be controlled to tens of microns in diameter.…”

Section: Introductionmentioning

confidence: 99%

“…The drilled holes on PDMS can be controlled to tens of microns in diameter. 35 While filling GaIn (liquid metal) as an electrode in microchannels, they would not flow through small holes due to its large surface tension. The application of femtosecond laser drilling makes it possible to design with larger area or multiple ends, and higher resolution, blind-end, and relatively thin liquid-metal based microelectrodes.…”

Section: Introductionmentioning

confidence: 99%