The field of plasmonic nanosensors is at the forefront of sensor technology, leveraging the unique properties of plasmonics and nanomaterials to detect and analyze substances at the nanoscale. Plasmonics involves the interaction between light and free electrons at the surface of metallic nanoparticles, generating resonances known as plasmon resonances. These resonances lead to enhanced electromagnetic fields, making plasmonic nanoparticles highly sensitive to changes in their surroundings. Despite significant advancements, there remain critical gaps in understanding the full potential and limitations of these sensors. Current research has demonstrated the ability of plasmonic nanosensors to detect molecules at extremely low concentrations, yet challenges persist in optimizing their selectivity, stability, and integration into practical applications. Addressing these gaps is crucial for advancing the field and realizing the full potential of plasmonic nanosensors in various domains, including biomedical research, environmental monitoring, and food safety.

This Research Topic aims to explore the potential of plasmonic nanoparticles in colorimetric sensors. The primary objective is to investigate how the unique optical properties and localized surface plasmon resonances of these nanoscale materials can be harnessed to enhance the sensitivity, selectivity, and real-time analysis capabilities of colorimetric sensors. Specific questions include understanding the mechanisms behind plasmon resonance shifts upon analyte binding, optimizing the design of plasmonic nanoparticles for various sensing applications, and developing innovative methodologies for integrating these materials into practical sensor platforms.

To gather further insights into the potential of plasmonic nanoparticles in colorimetric sensors, we welcome articles addressing, but not limited to, the following themes:

• Plasmonic-Based Chemical Sensor for Toxic Materials: Research focused on leveraging plasmonic nanomaterials for the detection and assay of toxic materials, exploring various signal readouts including colorimetric, fluorometric, and electrochemical approaches.
• Plasmonic Colorimetric Sensor for Biomarker Assay: Studies utilizing plasmonic nanomaterials for the detection of biomarkers, emphasizing colorimetric, fluorometric, and electrochemical signal readouts.
• Microfluidic-Plasmonic Based Biosensor: Advancements in microfluidic applications integrated with plasmonic materials for colorimetric and electrical signal transduction.
• Wearable Sensors for Body Health Monitoring: Development of wearable devices embedded with plasmonic nanomaterials for dynamically monitoring physiological parameters such as pH, urea, uric acid, lactate, cholesterol, amino acids, and hydration.
• Fundamental Aspects of Plasmonic Nanomaterials: Preparation and characterization of various types of plasmonic nanomaterials, elucidating the local surface plasmon resonance (LSPR) excitation mechanism, exploring sensing strategies based on modifying the dielectric environment, harnessing electromagnetic coupling, and understanding charge transfer phenomena.

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Frontiers in Sensors

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