Nanoplastics, tiny plastic particles less than 1,000 nanometers in size, pose a growing environmental concern due to their potential harm to ecosystems. Detecting these miniscule particles is challenging, but surface-enhanced Raman scattering (SERS) emerges as a promising technique. SERS utilizes rough metal surfaces to amplify the weak Raman signal of molecules, allowing scientists to identify the specific type of nanoplastic by analyzing its unique spectral fingerprint. Assoc. Prof. Dr.Prompong Pienpinijtham, a researcher at Chulalongkorn University, is at the forefront of this field. His work tackles two key challenges in SERS-based nanoplastics detection: developing methods for size-independent quantification and demonstrating greener approaches like using untreated filter paper for polystyrene nanoplastics. Despite its promise, challenges like separating nanoplastics from environmental debris remain. However, further research on optimizing SERS methods, as Assoc. Prof. Dr.Prompong Pienpinijtham continues to explore, holds significant promise for more robust detection of nanoplastics in real-world environmental samples.