Gold-silver alloy film based surface plasmon resonance sensor for biomarker detection

Bonding states of gold/silver plasmonic nanostructures and sulfur-containing active biological ingredients in biomedical applications: a review

“…110 Accordingly, the size of the cluster determines the size of the staple motif, where for larger clusters, such as Au 279 (SR) 84 or Au 144 (SR) 60 , shorter staple motifs are more prevalent. In contrast, smaller clusters, such as Au 30 (SR) 18 or Au 18 (SR) 14 , tend to exhibit longer patterns. 111 The hollow structure of Au/Ag nanocages, which allows photothermal activation with NIR absorbance, drug loading, and an adjustable surface for decoration, has made them universally applicable to nanomedicine.…”

“…Accordingly, the interaction between Au and light is significant and includes electron fluctuations due to surface plasmon resonance (SPR). 14 According to Mie's theory, some metals, such as Au and Ag (with electrons in the layer), have resonances called plasmons in the ultraviolet-visible spectrum, indicating that the interactions of electromagnetic waves and trapped electrons cause these resonances. The surface properties of Au and Ag NPs are greatly affected by organic molecules anchored to their This journal is © the Owner Societies 2024 surfaces, which can further affect their SPR.…”

Recent Advances in Surface Plasmon Resonance (SPR) Technology for Detecting Ovarian Cancer Biomarkers

“…It also has the strongest response at the higher wavelengths. However, Ag has a higher S SPR to changes in RI than Au, making it useful for detecting smaller molecules in sufficient sample concentrations and it is also cost-effective [113,114].…”

Diagnostic plasmonic sensors: opportunities and challenges

“…Due to the excellent property of the bimetallic film, it was successfully used for the detection of cancer antigen 125 (CA125), in which the limit of detection was 0.1 U mL À1 (0.8 ng mL À1 ). 45 Metamaterials are attracting increasing attention for SPR sensing due to their wide bandgap and high charge mobility. Metamaterials exhibit highly efficient resonance dip and high S (sensitivity) value of SPR sensing, which results in a large dynamic detection range.…”

“…Due to the excellent property of the bimetallic film, it was successfully used for the detection of cancer antigen 125 (CA125), in which the limit of detection was 0.1 U mL −1 (0.8 ng mL −1 ). 45…”