Acoustic frequency vibration sensor based on tapered SMS fiber structure

Gao, Ruifeng; Wang, Hongri; Zhu, Dezhi; Fan, Guanghua; Yan, Hui; Wang, Peng; Liu, Yi; Wang, Yingying; Liu, Wenjun; Song, Lizhong; Wang, Chaoqun; Chen, Yu‐Wen

doi:10.1016/j.sna.2018.01.023

Cited by 13 publications

(6 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The bead-in-fiber formation of PVDF webs fabricated by electrospinning has been reported to be an important factor that interferes with the piezoelectric effect [ 13 ]. As shown in Figure 2 , the PVDF webs formed in random orientations without beads and had an average diameter of 1.83 ± 1.22 μm.…”

Section: Resultsmentioning

confidence: 99%

“…In particular, various studies are being conducted on fiber-based sensors, such as Bragg gratings and tapers for the detection of mechanical and acoustic vibrations. With the expectation of their application in various fields due to the flexible characteristics of the fibers, interest in next-generation frequency sensors based on various sensing mechanisms using functional materials is increasing [ 12 , 13 , 14 ]. Recently, piezoelectric devices that convert mechanical energy into electrical energy or signals have gained much attention [ 15 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Flexible Piezoelectric Device for Frequency Sensing from PVDF/SWCNT Composite Fibers

et al. 2022

View full text Add to dashboard Cite

Polymer piezoelectric devices have been widely studied as sensors, energy harvesters, and generators with flexible and simple processes. Flexible piezoelectric devices are sensitive to external stimuli and are attracting attention because of their potential and usefulness as acoustic sensors. In this regard, the frequency sensing of sound must be studied to use flexible piezoelectric devices as sensors. In this study, a flexible piezoelectric device composed of a polymer and an electrode was successfully fabricated. Polyvinylidene fluoride, the active layer of the piezoelectric device, was prepared by electrospinning, and electrodes were formed by dip−coating in a prepared single−walled carbon nanotube dispersion. The output voltage of the external sound was matched with the input frequency through a fast Fourier transform, and frequency matching was successfully performed, even with mechanical stimulation. In a high−frequency test, the piezoelectric effect and frequency domain peak started to decrease sharply at 300 Hz, and the limit of the piezoelectric effect and sensing was observed from 800 Hz. The results of this study suggest a method for developing flexible piezoelectric-fiber frequency sensors based on piezoelectric devices for acoustic sensor systems.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Flexible Piezoelectric Device for Frequency Sensing from PVDF/SWCNT Composite Fibers

et al. 2022

View full text Add to dashboard Cite

show abstract

“…In a further refinement the tapered SMS fiber structure was cut in half at the taper waist of the MMF and a thin layer of gold was coated at the end of the tip for use as a high temperature sensor [195]. A tapered SMS fiber structure can also be used for strain [196] and acoustic sensing [197]. The MMF section can also possess an elliptical cross section [198], a bent shape [199] or be side polished [200] etc.…”

Section: A a Tapered Sms Fiber Structurementioning

confidence: 99%

Singlemode-Multimode-Singlemode Fiber Structures for Sensing Applications—A Review

Liu

et al. 2021

IEEE Sensors J.

118

View full text Add to dashboard Cite

A singlemode-multimode-singlemode (SMS) fiber structure consists of a short section of multimode fiber fusionspliced between two SMS fibers. The mechanism underpinning the operation of an SMS fiber structure is multimode interference and associated self-imaging. SMS structures can be used in a variety of optical fiber systems but are most commonly used as sensors for a variety of parameters, ranging from macro-world measurands such as temperature, strain, vibration, flow rate, RI and humidity to the micro-world with measurands such as proteins, pathogens, DNA, and specific molecules. While traditional SMS structures employ a short section of standard multimode fiber, a large number of structures have been investigated and demonstrated over the last decade involving the replacement of the multimode fiber section with alternatives such as a hollow core fiber or a tapered fiber. The objective of replacing the multimode fiber has most often been to allow sensing of different measurands or to improve sensitivity. In this paper, several different categories of SMS fiber structures, including traditional SMS, modified SMS and tapered SMS fiber structures are discussed with some theoretical underpinning and reviews of a wide variety of sensing examples and recent advances. The paper then summarizes and compares the performances of a variety of sensors which have been published under a number of headings. The paper concludes by considering the challenges faced by SMS based sensing schemes in terms of their deployment in real world applications and discusses possible future developments of SMS fiber sensors.

show abstract

“…The sensitivity of an MMI vibration sensor consisting of an SMF-MMF-SMF structure was enhanced by tapering the MMF [ 29 ], and then their implementation was further improved using Helmholtz resonators [ 30 ]. After these optimizations and implementations of sensitivity enhancement mechanisms, the new reports focused more on the applications rather than proof-of-concept demonstrations.…”

Section: Mmi-based Fiber-optic Sensorsmentioning

confidence: 99%

Optical Sensing Using Fiber-Optic Multimode Interference Devices: A Review of Nonconventional Sensing Schemes

Guzmán-Sepúlveda

Guzmán-Cabrera

Castillo-Guzman

2021

Sensors

View full text Add to dashboard Cite

We review fiber-based multimode interference (MMI) devices with a particular focus on optical fiber-based sensing applications. The present review complements a recently published, extensive review where the sensing of conventional physical variables such as refractive index, temperature, displacement, and strain was covered. This review focuses on MMI fiber sensors for nonconventional physical variables, including mechanical, electromagnetic, chemical, and optical, covering around fifteen years of work in the field. Finally, by the end of this paper, we also review some new trends of MMI-based schemes based on polymer fibers, for wavelength-locking applications, for retrieving the thermo-optic coefficient of liquid samples, and for measuring the dynamics of complex fluids.

show abstract

Acoustic frequency vibration sensor based on tapered SMS fiber structure

Cited by 13 publications

References 13 publications

A Flexible Piezoelectric Device for Frequency Sensing from PVDF/SWCNT Composite Fibers

A Flexible Piezoelectric Device for Frequency Sensing from PVDF/SWCNT Composite Fibers

Singlemode-Multimode-Singlemode Fiber Structures for Sensing Applications—A Review

Optical Sensing Using Fiber-Optic Multimode Interference Devices: A Review of Nonconventional Sensing Schemes

Contact Info

Product

Resources

About