Plasmonic heating effect in SERS-based nanoplastic detection

Surface Plasmon Resonance Biosensor for Sensitive Nanoplastic Detection

Simulation analysis of a multi-hot-spot system for SERS detection of the nanoplastics

AI summary · Read the abstract

Researchers used finite-difference time-domain simulations to optimize a bowl-shaped particle-in-cavity SERS substrate for detecting nanoplastics of various sizes and materials, finding that 40 nm gold nanoparticles generally outperformed 30 nm ones and that nanoplastic material composition did not significantly affect detection. Developing sensitive and reliable nanoplastic detection methods is foundational to understanding human and environmental exposure at the smallest, most biologically penetrant particle sizes.

Sensitive Nanoplastics Detection by Surface Plasmon Resonance Spectroscopy

A Nile Red-assisted colorimetric and SERS dual-mode strategy for the rapid and highly sensitive detection of nanoplastics

AI summary · Read the abstract

Scientists have developed a quick, dye-based test that can detect nanoplastics, plastic particles so small they're invisible to the eye, in water using either a simple color change or a more sensitive light-based scan. This matters because nanoplastics are increasingly found in our environment and bodies, but current detection methods require expensive lab equipment, making it hard to track this potential health threat; this new tool could someday enable easier, on-site monitoring of water safety.

Plasmonic Detection of Microplastics and Microorganisms Using a Circular-Nanorod-Coupled MIM Sensor

AI summary · Read the abstract

Researchers designed a compact plasmonic sensor based on a silver metal-insulator-metal waveguide coupled to an octagonal cavity embedded with circular nanorods, achieving dual resonance sensitivities of 1,321 and 2,198 nm/RIU that enable optical detection of microplastics and aquatic microorganisms through refractive index shifts.