Nano-islands of a metal support in its preparation and use in immunoassays

Nano-islands of a metal support in its preparation and use in immunoassays, involving applications and metal nano-islands vectors and methods of preparation of immunoassay. The present invention solves the immunofluorescence analysis of background noise, low detection sensitivity problems. Nano-islands of a metal support is formed of metal nano-islands on the surface of the support material obtained. Preparation methods: a support material adsorbed on the surface of gold seeds; Second, the growth of the metal nano-islands arranged reaction solution; Third, growth of the metal nano-islands on the surface of the support material; Fourth, washed, and dried. Application of the metal nano-islands carriers for immunoassay using a metal nano-islands modified vector as a carrier capture molecule biochips made, data analysis and fluorescence scan, and then complete the immunoassay. The present invention has high sensitivity, background fluorescence is greatly reduced noise level achieved fm ultrasensitive detection. The present invention is applicable to the functional material, and biochip immunoassay art.