Following fast development in several decades, plasmonics has stepped into a new horizon, where not only the intriguing optical properties of plasmonic structures and systems matter but also their functionalities, especially promising applications in different disciplines are of paramount importance. Small scales are where physics, chemistry, biology, and materials science converge. A better understanding of the profound properties from the molecular to submicron level opens a new pathway to designing functional plasmonic materials and devices. The combination of knowhow in plasmonics and different disciplines holds great promise for fundamental understanding of light-matter interaction and for real-life applications, such as super-resolution imaging, biomedical sensing and energy harvesting. This symposium aims at bringing together researchers from physics, chemistry, biology, and materials science to share recent breakthroughs in functional plasmonics, identify critical issues, exchange ideas, and outline future directions.