| abstract |
The invention discloses a kind of films and its preparation method and application of gold nano grain assembling.Film is to be covered with mutually to stick into thick 200nm-2 μm of film by multilayer gold nano grain in conductive substrates, wherein the partial size of gold nano grain is 30-120nm, is each other≤gap or gap of 10nm；Method is the surface sputtering golden film prior to conductive substrates, obtains the conductive substrates that its surface is covered with golden film, then graphite flake is covered with the conductive substrates of golden film as anode, its surface and is placed in Gold electrolysis liquid for cathode, purpose product is made in the electro-deposition under constant current.Its SERS with higher activity, be extremely easy to widely commercial applications in the quick trace detection to pesticide methyl parathion. |