This image highlights a vivid spiral structure engineered to respond to externally applied energy. Coated with a pink- and purple-hued polymer film, the spiral antenna heats up when activated, triggering an initial burst of drug release while simultaneously ablating surrounding tumor tissue. As the polymer gradually degrades, it continues to deliver therapeutic payloads over several weeks. This spiral-based design supports a dual-action strategy for precise, localized cancer treatment with reduced systemic exposure.