title: The contribution of nonlocal electro-opto-thermal interaction to single molecule nonlinear Raman enhancement.
abstract: we develop a precise modelling where nonlocal electro-opto-thermal interactions are comprehensively included for the analysis of nonlinear Raman enhancement and plasmonic heating. An interaction enhancement factor G(IEF) is introduced to quantify the coupling between the electromagnetic field and the temperature field which is rarely considered in the estimation of Raman enhancement. For the case of isolated single nanosphere, G(IEF) can be up to ten, indicating a thermal origin which well explains the observed temperature rise, shortened blinking period, and the nonlinearly enhanced Raman cross-section. For the case of nanodimer, the suppression of plasmon heating was analyzed, demonstrating the great capability to mitigate biomolecular degradation and blinking.
authors.forename: Chao-Yi
authors.initials: CY
authors.lastname: Tai
authors.forename: Wen-Hsiang
authors.initials: WH
authors.lastname: Yu
mesh_terms: D000465:Algorithms; D001704:Biopolymers / Q000032:analysis* / Q000737:chemistry*; D006361:Heating / Q000379:methods*; D055617:Micro-Electrical-Mechanical Systems / Q000379:methods*; D057054:Molecular Imaging / Q000379:methods*; D013059:Spectrum Analysis, Raman / Q000379:methods*
chemical_list: D001704:Biopolymers