Optics and Optoelectronics Laboratory;
Ocean University of China;
Qingdao 266100;
China;
Department of Physics and Electronic Science;
Weifang University;
Weifang 261061;
China;
surface-enhanced; Raman; scattering(SERS); polycyclic; aromatic; hydrocarbons(PAHs); three-dimensional; SERS; substrate; fluorescence; spectroscopy;