Detecting is the most important section in all kinds of sensors. In this regard, the amplification of surface plasmon resonance intensity of gold colloids nanoparticles (GNPs) was studied in the presence of several ions. GNPs were synthesized and then capped by thiocyanate and characterized via DLS and TEM image. In the next step the effect of different concentrations of ions such as iron, copp...

In this study, we demonstrate a long-range surface plasmon resonance (LR-SPR) biosensor for the detection of whole cell by captured antigens A and B on the surface of red blood cells (RBCs) as a model. The LR-SPR sensor chip consists of high-refractive index glass, a Cytop film layer, and a thin gold (Au) film, which makes the evanescent field intensity and the penetration depth longer than con...

A novel surface plasmon resonance (SPR) detection technique based on the programmed assembly of superparamagnetic iron oxide nanoparticles (SPIONs) and the corresponding change in mobility under external magnetic fields was demonstrated. In this approach, SPIONs act as a magnetophoretic mobility switch undergoing aggregation only in the presence of target analytes. The aggregated SPIONs which w...

In this report, we tune the surface plasmonic behavior of Au nanoplates depending on the morphology of the Pt shell in which Pt is considered as a less optically inactive element. We describe the synthesis of flat Au nanoplates coated with Pt via rim-preferential or uniform growth methods. Depending on the site-selective growth of Pt on core Au nanoplates, the aspect ratio of the resulting Au@P...

This paper is devoted to estimate contribution of structure and morphology of the individual design constituents to performance improvement of multilayer polaritonic photodetector (optochemical sensor). Surface plasmon resonance (SPR) in the surface barrier heterostructure (SBH) with the corrugated interface is used as the basic principle underlying the device operation. The demonstration of co...

In this paper, we present a phase-intensity surface plasmon resonance (SPR) biosensor and demonstrate its use for avian influenza A (H5N1) antibody biomarker detection. The sensor probes the intensity variation produced by the steep phase response at surface plasmon excitation. The prism sensor head is fixed between a pair of polarizers with a perpendicular orientation angle and a forbidden tra...

Surface Plasmon Resonance (SPR) is an established technique for detection of molecular binding. More recently, new experimental set ups transformed SPR in a label-free and real-time detector of specific cell binding to an immobilized ligand. In this work, Surface Plasmon Resonance Imaging (SPRi) was employed to investigate the feasibility of a multiplex sensor to detect simultaneously 44 differ...

Abstract Surface plasmon resonance (SPR) sensors have many applications in detecting toxic gases, water pollutants, and biomarkers of diseases. are a good candidate for future sensing platforms due to their high sensitivity fine resolution. However, the challenges cost, cross-sensitivity, large amount generated data need be addressed unlock surface potential. Machine learning (ML) algorithms ca...

Plasmonic metal nanoparticles (NPs), such as Ag, Au, Cu NPs, attracts a lot of interest due to their notable applications in biological, and chemical sensing. Researchers have studied on plasmonic NPs which exceptional optical properties large spectral region. Metal form unique surface plasmon resonance (SPR) peak that is the electromagnetic spectrum’s visible part. The SPR firmly depends NP’s ...