Topic
Surface plasmon resonance
About: Surface plasmon resonance is a research topic. Over the lifetime, 24909 publications have been published within this topic receiving 810976 citations. The topic is also known as: Surface plasmon resonance & SPR (technology).
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TL;DR: In this article, a theoretical analysis of sensitivity and signal-to-noise ratio (SNR) of a step-index fiber optic surface plasmon resonance sensor with bimetallic layers (silver and gold) was carried out.
168 citations
TL;DR: An optical sensor based on the phenomenon of light-excited surface plasmon resonance has been investigated to measure liquid chemical concentrations in this article, where a white light source is used to excite surface PLASmon waves at a metal/analyte interface.
Abstract: An optical sensor based on the phenomenon of light-excited surface plasmon resonance has been investigated to measure liquid chemical concentrations. A white light source is used to excite surface plasmon waves at a metal/analyte interface. The wavelength of maximum absorption in the reflected light depends uniquely on the refractive index of the analyte.
168 citations
01 Jan 2002
TL;DR: An SPR sensor system based on a prototype two-channel system similar to the single channel Spreeta devices, which provides a reference channel to compensate for bulk refractive index (RI), non-specific binding and temperature variations.
Abstract: Surface plasmon resonance (SPR) biosensors offer the capability for continuous real-time monitoring. The commercial instruments available have been large in size, expensive, and not amenable to field applications. We report here an SPR sensor system based on a prototype two-channel system similar to the single channel Spreeta devices. This system is an ideal candidate for field use. The two-channel design provides a reference channel to compensate for bulk refractive index (RI), non-specific binding and temperature variations. The SPR software includes a calibration function that normalizes the response from both channels, thus enabling accurate referencing. In addition, a temperature-controlled enclosure utilizing a thermo-electric module based on the Peltier effect provides the temperature stability necessary for accurate measurements of RI. The complete SPR sensor system can be powered by a 12V battery. Pre-functionalized, disposable, gold-coated thin glass slides provide easily renewable sensor elements for the system. Staphylococcus aureus enterotoxin B (SEB), a small protein toxin was directly detectable at sub-nanomolar levels and with amplification at femtomolar levels. A regeneration procedure for the sensor surface allowed for over 60 direct detection cycles in a 1-month period.
168 citations
TL;DR: In this paper, the authors extended Persson's theory by taking into account the interband transitions in the dielectric function of the particles and found that the broadening and shift of the surface plasmon resonance caused by interface effects are significantly influenced by the inter-band transitions.
168 citations
TL;DR: In this article, a new visible light photocatalysis mechanism was proposed for the enhanced performance of Bi@BiOCl with plasmonic Bi metal, exposed facets, and oxygen defects.
168 citations