Graphene–Gold–Au@Ag NPs-PDMS Films Coated Fiber Optic for Refractive Index and Temperature Sensing

Huang, Qing; Wang, Yong; Zhu, Wenjie; Lai, Tianting; Peng, Jue; Lyu, Dajuan; Guo, Donglai; Yuan, Yinquan; Lewis, Elfed; Yang, Minghong

doi:10.1109/lpt.2019.2921021

Cited by 30 publications

(18 citation statements)

References 22 publications

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“…Based on the fitting curve in Figure 14 c, the correlation coefficient R 2 is 0.993 which indicates the biosensor has good repeatability. From the slope obtained from the fitting process, the sensitivity of the MMF–SMF–MMF structure with graphene-gold-Au@Ag NPs-PDMS is −1.02 nm/°C [ 61 ]. The sensitivity of this structure is higher than PDMS-long period fiber gratings coated with PDMS (0.2554 nm/°C) [ 62 ], graphene quantum dots-coated hollow core fiber (0.1237 nm/°C) [ 63 ], and Multimode Fiber—Fiber Bragg Grating—Multimode Fiber (MMF-FBG-MMF) structure (0.172 nm/°C) [ 64 ].…”

Section: Graphene-based Fiber Coupled Spr Biosensormentioning

confidence: 99%

A Review of Graphene-Based Surface Plasmon Resonance and Surface-Enhanced Raman Scattering Biosensors: Current Status and Future Prospects

Nurrohman

Chiu

2021

Nanomaterials

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The surface plasmon resonance (SPR) biosensor has become a powerful analytical tool for investigating biomolecular interactions. There are several methods to excite surface plasmon, such as coupling with prisms, fiber optics, grating, nanoparticles, etc. The challenge in developing this type of biosensor is to increase its sensitivity. In relation to this, graphene is one of the materials that is widely studied because of its unique properties. In several studies, this material has been proven theoretically and experimentally to increase the sensitivity of SPR. This paper discusses the current development of a graphene-based SPR biosensor for various excitation methods. The discussion begins with a discussion regarding the properties of graphene in general and its use in biosensors. Simulation and experimental results of several excitation methods are presented. Furthermore, the discussion regarding the SPR biosensor is expanded by providing a review regarding graphene-based Surface-Enhanced Raman Scattering (SERS) biosensor to provide an overview of the development of materials in the biosensor in the future.

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Section: Graphene-based Fiber Coupled Spr Biosensormentioning

confidence: 99%

A Review of Graphene-Based Surface Plasmon Resonance and Surface-Enhanced Raman Scattering Biosensors: Current Status and Future Prospects

Nurrohman

Chiu

2021

Nanomaterials

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“…In order to meet the needs of optical fiber sensing, we can choose other materials for replacement, and we can also combine PDMS with other materials to improve the sensing performance of PDMS [ 40 ]. Especially for fiber optic sensors based on SPR, the combination of metal materials and PDMS is very important [ 41 , 42 , 43 , 44 ]. PCF is used in sensors due to its inherent air hole and good sensing performance.…”

Section: Sensors Coated With the Pdmsmentioning

confidence: 99%

“…The temperature and refractive index can be measured simultaneously [ 43 ]. In [ 44 ], graphene-gold-Au@Ag NPs-PDMS were coated on a sensor of the same MMF-SMF-MMF structure. In this work, the graphene-gold-Au@Ag NPs showed an ability to excite SPR as a special metal, and PDMS was used to increase the temperature sensitivity [ 44 ].…”

Section: Sensors Coated With the Pdmsmentioning

confidence: 99%

“…In [ 44 ], graphene-gold-Au@Ag NPs-PDMS were coated on a sensor of the same MMF-SMF-MMF structure. In this work, the graphene-gold-Au@Ag NPs showed an ability to excite SPR as a special metal, and PDMS was used to increase the temperature sensitivity [ 44 ]. More importantly, a good ability to combine with other materials was fully demonstrated.…”

Section: Sensors Coated With the Pdmsmentioning

confidence: 99%

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A Review of Coating Materials Used to Improve the Performance of Optical Fiber Sensors

Yang

Wang

et al. 2020

Sensors

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In order to improve the performance of fiber sensors and fully tap the potential of optical fiber sensors, various optical materials have been selectively coated on optical fiber sensors under the background of the rapid development of various optical materials. On the basis of retaining the original characteristics of the optical fiber sensors, the coated sensors are endowed with new characteristics, such as high sensitivity, strong structure, and specific recognition. Many materials with a large thermal optical coefficient and thermal expansion coefficients are applied to optical fibers, and the temperature sensitivities are improved several times after coating. At the same time, fiber sensors have more intelligent sensing capabilities when coated with specific recognition materials. The same/different kinds of materials combined with the same/different fiber structures can produce different measurements, which is interesting. This paper summarizes and compares the fiber sensors treated by different coating materials.

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“…The coupling between the metal NPs and the metal film can enhance the electric field. The coupling resonance effect among different metal particles, metal films, and functional materials (graphene) uniformly causes the shift or even broadening of SPR resonance peak [ 62 ]. The former is mainly due to the difference of dielectric constant of materials, resulting in a different refractive index; the latter is caused by the energy transfer between different materials, resulting in electromagnetic dispersion.…”

Section: Fiber-lspr Refractive Index Sensorsmentioning

confidence: 99%

Preparation and Application of Metal Nanoparticals Elaborated Fiber Sensors

Haoru

et al. 2020

Sensors

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In recent years, surface plasmon resonance devices (SPR, or named plamonics) have attracted much more attention because of their great prospects in breaking through the optical diffraction limit and developing new photons and sensing devices. At the same time, the combination of SPR and optical fiber promotes the development of the compact micro-probes with high-performance and the integration of fiber and planar waveguide. Different from the long-range SPR of planar metal nano-films, the local-SPR (LSPR) effect can be excited by incident light on the surface of nano-scaled metal particles, resulting in local enhanced light field, i.e., optical hot spot. Metal nano-particles-modified optical fiber LSPR sensor has high sensitivity and compact structure, which can realize the real-time monitoring of physical parameters, environmental parameters (temperature, humidity), and biochemical molecules (pH value, gas-liquid concentration, protein molecules, viruses). In this paper, both fabrication and application of the metal nano-particles modified optical fiber LSPR sensor probe are reviewed, and its future development is predicted.

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Graphene–Gold–Au@Ag NPs-PDMS Films Coated Fiber Optic for Refractive Index and Temperature Sensing

Cited by 30 publications

References 22 publications

A Review of Graphene-Based Surface Plasmon Resonance and Surface-Enhanced Raman Scattering Biosensors: Current Status and Future Prospects

A Review of Graphene-Based Surface Plasmon Resonance and Surface-Enhanced Raman Scattering Biosensors: Current Status and Future Prospects

A Review of Coating Materials Used to Improve the Performance of Optical Fiber Sensors

Preparation and Application of Metal Nanoparticals Elaborated Fiber Sensors

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