Plasmonic and chiroplasmonic nanobiosensors based on gold nanoparticles

Area of Science:

• * Nanobiotechnology and advanced optical sensing platforms.
• * Plasmonics and nanomaterial applications in biosensing.

Background:

• * Optical nanobiosensors are crucial in bioresearch, with plasmonic nanoparticles significantly enhancing conventional methods.
• * Gold nanoparticles (AuNPs) offer unique plasmonic properties, overcoming limitations of traditional optical sensors.
• * Advancements in AuNPs-based nanobiosensors are vital for integrated multiplex assays.

Purpose of the Study:

• * To review the performance and achievements of optical nanobiosensors based on gold nanoparticle plasmonics.
• * To investigate how AuNP physicochemical properties influence plasmonic signal propagation.
• * To provide insights into current and future applications of AuNPs-based nanobiosensors in biomedical fields.

Main Methods:

• * Comprehensive literature review of optical nanobiosensors.
• * Analysis of plasmonic phenomena including Surface Plasmon Resonance (SPR), Localized SPR (LSPR), Surface-Enhanced Raman Scattering (SERS), and chiroptical effects.
• * Examination of gold nanoparticle characteristics (size, shape, composition, assembly) and their impact on sensing.

Main Results:

• * AuNPs-based nanobiosensors demonstrate high potential for sensitive and specific analyte detection.
• * Physicochemical properties of AuNPs significantly modulate plasmonic signal propagation and sensing performance.
• * Various plasmonic phenomena (SPR, LSPR, SERS, chiroptical) are effectively utilized in AuNP nanobiosensors.

Conclusions:

• * Plasmonic AuNPs are key components for developing advanced optical nanobiosensors.
• * Further research is needed to improve technology integration and multiplexing capabilities.
• * AuNPs-based optical plasmonic nanobiosensors hold significant promise for diverse biomedical applications and analyte detection.