Ultrasensitive electrochemical cancer cells sensor based on trimetallic dendritic Au@PtPd nanoparticles for signal amplification on lab-on-paper device

- A trimetallic dendritic Au@PdPt NPs, possessed peroxidase-like activity, was fabricated by a simple method for signal amplification.
- Folic acid attached to the surface of dendritic Au@PtPd NPs by click chemistry could selectively recognize the folate receptor of cell surface.
- A sandwich sensor was designed and implemented on lab-on-paper device for point-of-care testing.