摘要：Here,a novel Au Wedge-enhanced Raman spectroscopy(WERS)substrate is *** electric field enhancement factor and the effective mode field radius with varying geometry parameters are *** proper excitation wavelength 633 nm is *** practical application of WERS substrate is *** Au WERS not only can provide a continuous extremely highly localized electric field as surface-enhanced Raman scattering(SERS)hotspots,but also can offer 10 orders of magnitude of SERS enhancement *** corresponding results reveal that WERS substrate will be widely applied in optics,biology,chemistry and other fields.