Effects of intermediate dielectric films on multilayer surface plasmon resonance behavior

Yao, Manwen; Tan, Ooi Kiang; Tjin, Swee-Chuan; Wolfe, J. C.

doi:10.1016/j.actbio.2008.06.002

Cited by 14 publications

(9 citation statements)

References 24 publications

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“…In our simulations, a laser with 632.8 nm wavelength was taken as the incident light source. Silver (Ag) was applied as the metal material in the SPR sensor ( n m = 0.13 + 3.99i), which can provide sharper reflectance dip than gold (Au) [ 21 , 26 ]. The thickness of the Ag film was assumed to be 47 nm to ensure an approximate-zero reflectance at the resonance angle.…”

Section: Resultsmentioning

confidence: 99%

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Figure of Merit Enhancement of a Surface Plasmon Resonance Sensor Using a Low-Refractive-Index Porous Silica Film

Meng

Zhao

Lin

et al. 2017

Sensors

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In this paper; the surface plasmon resonance (SPR) sensor with a porous silica film was studied. The effect of the thickness and porosity of the porous silica film on the performance of the sensor was analyzed. The results indicated that the figure of merit (FOM) of an SPR sensor can be enhanced by using a porous silica film with a low-refractive-index. Particularly; the FOM of an SPR sensor with 40 nm thick 90% porosity porous silica film; whose refractive index is 1.04 was improved by 311% when compared with that of a traditional SPR sensor. Furthermore; it was found that the decrease in the refractive index or the increase in the thickness of the low-refractive-index porous silica film can enlarge the FOM enhancement. It is believed that the proposed SPR sensor with a low-refractive-index porous silica film will be helpful for high-performance SPR sensors development.

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Section: Resultsmentioning

confidence: 99%

“…These characteristics make it applicable to many optical aspects, such as the preparation of antireflection coatings [ 20 ]. Particularly, porous silica film has also been employed for performance improvement of an SPR sensor by reducing its FWHM of the reflectance dip [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

Figure of Merit Enhancement of a Surface Plasmon Resonance Sensor Using a Low-Refractive-Index Porous Silica Film

Meng

Zhao

Lin

et al. 2017

Sensors

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“… and

n_{Ti {normalO}_{2}} = 2.2789

from Ref. . The thickness of the three dielectric layers SiO 2 , MgO, and TiO 2 has been optimized and fixed to d optd = 5 nm for air analyte.…”

Section: Resultsmentioning

confidence: 99%

Theoretical investigation of sensitivity enhancement in dielectric multilayer surface plasmon sensor

Benkabou

Chikhi

2013

Physica Status Solidi (a)

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“…There are few reports of the titanium SPR (Ti-SPR) sensor which titanium metal layer was passivated in air. Although many studies of a TiO 2 -coated sensor for SPR are reported [18–23], their sensors were coated by TiO 2 directly and titanium metal was not used. In medicine and dentistry, the titanium metal surface of dental implants and artificial bones oxidize in air.…”

Section: Introductionmentioning

confidence: 99%

Real time assessment of surface interactions with a titanium passivation layer by surface plasmon resonance

et al. 2012

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The high corrosion resistance and strength-to-density ratio makes titanium widely used in major industry, but also in a gamut of medical applications. Here we report for the first time on our development of a titanium passivation layer sensor that makes use of surface plasmon resonance (SPR). The deposited titanium metal layer on the sensor was passivated in air, like titanium medical devices. Our ‘Ti-SPR sensor’ enables analysis of biomolecules interactions with the passivated surface of titanium in real time. As a proof of concept, corrosion of titanium passivation layer exposed to acid was monitored in real time. Also, the Ti-SPR sensor can accurately measure the time-dependence of protein adsorption onto titanium passivation layer with a sub-nanogram per square millimeter accuracy. Besides such SPR analyses, an SPR-imaging (SPRI) enables real-time assessment of chemical surface processes that occur simultaneously at ‘multiple independent spots’ on the Ti-SPR sensor, such as acid-corrosion or adhesion of cells. Our Ti-SPR sensor will therefore be very useful to study titanium-corrosion phenomena and biomolecular titanium-surface interactions with application in a broad range of industrial and biomedical fields.

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Effects of intermediate dielectric films on multilayer surface plasmon resonance behavior

Cited by 14 publications

References 24 publications

Figure of Merit Enhancement of a Surface Plasmon Resonance Sensor Using a Low-Refractive-Index Porous Silica Film

Figure of Merit Enhancement of a Surface Plasmon Resonance Sensor Using a Low-Refractive-Index Porous Silica Film

Theoretical investigation of sensitivity enhancement in dielectric multilayer surface plasmon sensor

Real time assessment of surface interactions with a titanium passivation layer by surface plasmon resonance

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