Localized Surface Plasmon Resonance (LSPR) Biosensor for the Protein Detection

Plasmonic optical tweezers based on nanostructures: fundamentals, advances and prospects

“…Specifically, for POT, the trapping laser power, which is essential to achieve stable trapping in the Rayleigh regime, can be reduced by the electromagnetic enhancement of the SPP modes. This means that the POT can potentially be combined with applications such as the acceleration of photochemical reactions [56] or sensitive detection of biological entities [57,58]. Moreover, it is well known that the diffraction limit of laser light places a lower limit on the size to which light can be focused.…”

Highly electrostatically-induced detection selectivity and sensitivity for a colloidal biosensor made of chitosan nanoparticle decorated with a few bare-surfaced gold nanorods

“…1, the UV-vis spectra exhibit a clear evidence on the spectral shift of the AuNRs with different aspect ratios, wherein the spectral shift becomes large while the aspect ratio increases. In sensing application, the larger spectral shift translated a better resolution toward a given concentration of the analyte, and it is frequently realized to have as low as possible analyte concentration, i.e., lower limit of detection, such as in picomolar to femtomolar resolution (García et al, 2010;Sagle et al, 2011;Cottat et al, 2013). Therefore, the AuNRs with the aspect ratio of 5.2 were employed for subsequent study.…”

Recent advances in gold nanoparticle-based bioengineering applications

“…20 Aggregation of DNA-modified AuNPs in the presence of target DNA in solution, through sequence specific DNA hybridization, leads to a significant decrease in particle distances. 28 Subtle changes in the LSPR of single nanoparticles could be further enhanced by using hot-spot position controlled AuNR structures as LSPR substrates ( Fig. 2a.…”