Fig. 2From: Waste Fiber Powder Functionalized with Silver Nanoprism for Enhanced Raman Scattering Analysis a Photograph of pure wool powder (WP), wool powder with AgNPrs (WP-Ag), pure wool powder disk (WP disk), and disk from wool powder treated with AgNPrs (WP-Ag disk). b Photograph the AgNPr solutions before and after assembly of AgNPrs on WP. Weight ratio of AgNPr solution to WP was 5000Back to article page