Polarization Dependence of Surface Enhanced Raman Scattering on a Single Dielectric Nanowire

Figure 1

Experimental maps of the 1576 cm⁻¹ BT SERS band of NW/Ag composite using a laser with 514.5 nm wavelength at the same NW, and the sample was rotated for parallel/perpendicular polarization mapping; the polarization is parallel (a) and perpendicular (b) to the NW. (c) Corresponding microscope image of the SERS mapping region of (a) and (b).

(a)

(b)

(c)