Recent advances in the development of graphene-based surface plasmon resonance (SPR) interfaces

Szunerits, Sabine; Maalouli, Nazek; Wijaya, Edy; Vilcot, Jean-Pierre; Boukherroub, Rabah

doi:10.1007/s00216-012-6624-0

Cited by 203 publications

(109 citation statements)

References 31 publications

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“…When compared with gold, the plasmon coupling in the silver has a sharper angular resonance peak [12], but it presents a drawback that it can be easily oxidized and the poor chemical stability thus affecting the performance of SPR-sensors [11,12]. Many of methods were designed in an attempt to overcome this problem, for example the use of bimetallic silver-gold layers [13,14], a thin oxide fi lms TiO 2 or SnO 2 [15][16][17], In addition to thin fi lms of carbon such as the amorphous carbon [18], amorphous carbonated silicon (a-Si 0.63 C 0.37 ) [19][20][21] and the newer one is, graphene [13].…”

Section: Introductionmentioning

confidence: 99%

“…This π orbitals form a dense cloud that blocks the gap within its atomic rings. Thus preventing the oxygen from interacting with them [13,[21][22][23]. Further, the graphene layers possesses very fascinating properties include the optical conductivity in the visible-infrared range, the lowest resistivity, high electron mobility, and relatively low cost [1,24,25].…”

Section: Introductionmentioning

confidence: 99%

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Reflectivity optimization of the SPR graphene sensor

2018

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Abstract. In this study, the optimization of the surface plasmon resonance (SPR) sensor based on graphene-silver substrate was investigated. We simulated the refl ection spectrum that depends on the metal thickness and the number of graphene layers. The addition of a certain number of graphene layers based on the knowledge that silver oxidation decreases the sensitivity of the sensor improved the sensitivity S RI , while the detection accuracy decreased. To optimize the sensor performance, the investigation focused on monolayer graphene. Furthermore, genetic algorithms were used to optimize the SPR biosensor refl ection by adjusting the coeffi cients of the system, which are the incidence angle and metal layer thickness.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Reflectivity optimization of the SPR graphene sensor

2018

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“…To enhance the sensitivity of SPR sensor, researchers introduced nanomaterials such as chitosan [9,10], zinc oxide [11,12], gold nanoparticle [13,14], graphene [15,16] and graphene oxide [17,18]. Obviously, the employment of those materials results positive responds where the sensitivity of sensors is successfully increased.…”

Section: Introductionmentioning

confidence: 99%

Optimization of SPR signals: Monitoring the physical structures and refractive indices of prisms

Mukhtar

Halim²,

Hassan

2017

EPJ Web Conf.

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Abstract. Surface plasmon resonance (SPR) can only be achieved if sufficient energy is provided at the boundary between metal and dielectric. An employment of prism as a light coupler by using Kretschmann configuration is one of the alternative for the production of adequate energy to be generated as surface plasmon polaritons (SPP). This work is carried out to investigate the effect of physical structure of the prism and its refractive index to the excitation of SPPs. A 50nm gold thin metal film with dielectric constant of ε=-12.45i+1.3 was deposited on the hypotenuse surface of the prisms. The physical structures of the prisms were varied such as triangular, conical, hemispherical and half cylindrical. These prisms were classified into two types of refractive indices (RI), namely n=1.51(type BK7) and n=1.77(type SF11). Based on SPR curve analyses, we discovered that strong SPR signals which consist of 82.98% photons were excited as SPPs can be obtained by using type-BK7 prism with physical structures of hemispherical or half cylindrical. From the view of selectivity ability as sensors, the usage of type-SF11 prisms (half cylindrical and hemispherical) able to enhance this impressive feature in which sharp SPR curves with small FWHM values were obtained. In conclusion, apart from properties of thin film materials, the physical structure of prisms and their RI values play crucial roles to obtain optimum SPR signal. High sensitivity SPR sensor can be established with the appointment of type-BK7 prisms (hemispherical or half cylindrical shape) as light couplers.

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“…The promising potential of SPR sensors is that they are very high sensitivity to a change in the refractive index of the sensing medium [11]. …”

Section: Spr Phenomenonmentioning

confidence: 99%

Influence of electromagnetic (EM) waves polarization modes on surface plasmon resonance

et al. 2017

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Abstract. Optical sensor based on surface plasmon resonance are widely used for various applications. In this paper, an optimization of EM waves polarization modes for the occurrence of SPR by using a modified optical waveguiding assembly has been discussed. A 633 nm of linearly polarized He-Ne laser was appointed as a light source. The polarization modes were controlled by rotating the position of He-Ne laser. It was found that the optimum SPR signal with reflectance, R = 0.21 a.u and SPR angle, θSPR = 48° can be obtained as the position of laser was rotated at 90°, with the presence of polarizer. The location of the critical angle was observed at θC = 46°. For the validation purpose, a simulation based on Fresnel equation was conducted where the percentage difference between the experimental and theoretical results were analyzed. The percentage difference between experimental and theoretical results for both θSPR and θC were 9.09% and 15.00% respectively. In conclusion, an excellent agreement between the theoretical and experimental findings proved the stability of this SPR setup, where the EM waves polarization can easily be controlled by manipulating the position of laser.

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Recent advances in the development of graphene-based surface plasmon resonance (SPR) interfaces

Cited by 203 publications

References 31 publications

Reflectivity optimization of the SPR graphene sensor

Reflectivity optimization of the SPR graphene sensor

Optimization of SPR signals: Monitoring the physical structures and refractive indices of prisms

Influence of electromagnetic (EM) waves polarization modes on surface plasmon resonance

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