a) The scattering pattern for water (C2v symmetry) and CH3 (C3v symmetry) depend on the specific vibration (symmetric vs. asymmetric stretch), the polarization combination, and the molecular orientation on the particle (R = 500 nm) surface. The tilt angles in the simulations are 0° (blue), 30° (cyan), 60° (green), and 90° (red). b) The ratio between signals in different polarization combinations can be used to identify the molecular tilt angle; however, certain combinations have poor sensitivity. Reprinted with permission from ref [168], copyright 2010 American Institute of Physics.