Plasmonic Refractive Index Sensor with High Figure of Merit Based on Concentric-Rings Resonator

Zhang, Zhaojian; Yang, Junbo; He, Xin; Zhang, Jingjing; Huang, Jie; Chen, Dingbo; Han, Yunxin

doi:10.3390/s18010116

Cited by 148 publications

(51 citation statements)

References 33 publications

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“…Recently, flexible tactile sensors are drawing significant attention due to the unique capability to mimic human skin perception of sensing subtle pressure changes, which are potential in biomimetic prostheses [1], mobile medical diagnostics [2,3], non-invasive health care [4][5][6] and human-machine interactions [7][8][9]. Conventional healthcare sensing devices including highspeed camera, photo-electric devices [10] and siliconbased sensors [11] have been employed for monitoring body motion; however the applications are still limited because of their poor flexibility and wearability. To avoid discomfort for the user, the flexible and stretchable substrates are crucial factors to be considered.…”

Section: Introductionmentioning

confidence: 99%

Flexible PDMS-based triboelectric nanogenerator for instantaneous force sensing and human joint movement monitoring

Hou

Cui

et al. 2019

Sci. China Mater.

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Flexible wearable sensors with excellent electric response and self-powered capability have become an appealing hotspot for personal healthcare and human-machine interfaces. Here, based on triboelectric nanogenerator (TENG), a flexible self-powered tactile sensor composed of micro-frustum-arrays-structured polydimethylsiloxane (PDMS) film/copper (Cu) electrodes, and poly(vinylidenefluoride-trifluoroethylene) (P(VDF-TrFE)) nanofibers has been demonstrated. The TENG-based self-powered tactile sensor can generate electrical signals through the contact-separation process of two triboelectric layers under external mechanical stimuli. Due to the uniform and controllable micro-frustum-arrays structure fabricated by micro-electro-mechanical system (MEMS) process and the P(VDF-TrFE) nanofibers fabricated by electrostatic spinning, the flexible PDMS-based sensor presents high sensitivity of 2.97 V kPa −1 , stability of 40,000 cycles (no significant decay), response time of 60 ms at 1 Hz, low detection pressure of a water drop (~4 Pa, 35 mg) and good linearity of 0.99231 in low pressure region. Since the PDMS film presents ultra-flexibility and excellent-biocompatibility, the sensor can be comfortably attached on human body. Furthermore, the tactile sensor can recognize various types of human body movements by the corresponding electrical signals. Therefore, the as-prepared TENGs are potential on the prospects of gesture detection, health assessment, human-machine interfaces and so on.

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Section: Introductionmentioning

confidence: 99%

Flexible PDMS-based triboelectric nanogenerator for instantaneous force sensing and human joint movement monitoring

Hou

Cui

et al. 2019

Sci. China Mater.

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“…For example, in the case of a plasmonic sensor, a surface plasmon propagates along a metal/dielectric interface in an optical fiber upon excitation [100]. The variation in the optical refractive index of an analyte near the metal layer significantly enhances phase matching and thus changes the spectral response of the optical fibers; thereby, sensing occurs [101].…”

Section: Textiles In Advanced Health Carementioning

confidence: 99%

Recent Advances in Soft E-Textiles

Mondal

2018

Inventions

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E-textiles (electronic textiles) are fabrics that possesses electronic counterparts and electrical interconnects knitted into them, offering flexibility, stretchability, and a characteristic length scale that cannot be accomplished using other electronic manufacturing methods currently available. However, knitting is only one of the technologies in e-Textile integration. Other technologies, such as sewing, embroidery, and even single fiber-based manufacture technology, are widely employed in next-generation e-textiles. Components and interconnections are barely visible since they are connected intrinsically to soft fabrics that have attracted the attention of those in the fashion and textile industries. These textiles can effortlessly acclimatize themselves to the fast-changing wearable electronic markets with digital, computational, energy storage, and sensing requirements of any specific application. This mini-review focuses on recent advances in the field of e-textiles and focuses particularly on the materials and their functionalities.

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“…Then we study the theoretical transmission characteristics of the proposed structure by coupled mode theory (CMT) [21][22][23]. As shown in figure 1(b), the input and output waves are represented by S j 1, 2, 3, 4 , j =  ( )and a 1 , a 2 indicate the energy amplitude which satisfy the following relational expressions:…”

Section: Structure and Theorymentioning

confidence: 99%

Sensing analysis based on fano resonance in arch bridge structure

Dong

Sun

et al. 2018

J. Phys. Commun.

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An arch bridge structure, comprising of a semiring cavity resonator coupled with bus waveguide, has been investigated numerically and theoretically. Due to the interaction of broad bright state and the narrow dark state caused by the semiring cavity and bus waveguide, respectively, fano resonance can be accrued in transmission spectra which possess a sheer asymmetrical profile that can be adjusted by changing the parameters of the structure with the finite-difference time-domain (FDTD) method. A plasmonic nanosensor is devised based on fano resonance in a metal-insulator-metal (MIM) waveguide system, which has a sensitivity of 1500 nm/RIU as well as a figure of merit (FOM) of 5500. Our findings can provide the guidance for fundermental research of nanosensor in highly integrated optical circuits.

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Plasmonic Refractive Index Sensor with High Figure of Merit Based on Concentric-Rings Resonator

Cited by 148 publications

References 33 publications

Flexible PDMS-based triboelectric nanogenerator for instantaneous force sensing and human joint movement monitoring

Flexible PDMS-based triboelectric nanogenerator for instantaneous force sensing and human joint movement monitoring

Recent Advances in Soft E-Textiles

Sensing analysis based on fano resonance in arch bridge structure

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