Original ResearchPublished 18 September 2026Gold nanoparticles-based green nano-plasmonic sensors derived from Annona squamosa leaf extract for visual and UV–visible detection of cadmium contamination in waterKaranveer Singh · Archana Chauhan · Roberto Acevedo · Rafael LuqueFrontiers in Materialsdoi 10.3389/fmats.2026.1924547