Enhanced Thermoplasmonic Oscillations in Metallic Nanostructured Particles for the Realization of Nanofluidic Sensors

Commission B fields and waves

“…et al, 2005, Yasuda, T. et al, 2005, Yokoi, N. et al, 2006, high index contrast waveguides [Kakihara, K. et al, 2006b], slot waveguides [Fujisawa, T. and M. Koshiba, 2006d, magneto-photonic crystal waveguides M. Koshiba, 2007a, Kono, N. et al, 2007b], and metallic nanostructured particles [Florous, N.J. et al, 2007c] have been proposed. Design methods for photonic crystal fiber Raman amplifiers have been developed [Sasaki, K. et al, 2007, Varshney, S.K.…”

Temperature dependence of plasmon resonances in spheroidal metal nanoparticles

“…Previous calculations of the effect of the temperature on different properties of the MNs were performed in the zero-temperature limit [16,17] or in the interval 15 ÷ 1000 K only [9,[18][19][20][21][22][23][24][25][26][27][28][29][30]. While the optical properties of both the bulk metals [31][32][33][34][35] and the MNs in the low-temperature regime are now well studied, the understanding of the effects of electron temperature (typically of the order of 10 4 K) on the plasmon modes has remained a challenge and is not so well understood as at the T = 0.…”

“…The effect of electron temperature was not studied in detail so far because a broad temperature interval requires the use of materials with high thermal stability. In [22][23][24][25]30], an improved Drude model was used where the electron concentration and/or a plasma frequency are directly dependent on the electron temperature. Only a few works have addressed this problem so far [39,40].…”

Temperature dependence of enhanced optical absorption and Raman spectroscopy from metallic nanoparticles

“…It is our purpose in the present study to present a theoretical model which simulates these temperature effects to reveal how the optical absorption and enhanced SERS by these nanoshells will be affected, and we shall focus on each of the two (symmetric and antisymmetric) plasmon resonance modes of the coreshell particle. A recent work has also carried out a modeling study on the thermalplasmonic effects for a spheroidal coreshell particle [12]. However, this work was limited only to the calculation of extinction for the ''low frequency mode'' since the splitting into symmetric and antisymmetric modes for the prolate spheroidal particle studied was not obvious with the dimensions studied in Ref.…”

“…However, this work was limited only to the calculation of extinction for the ''low frequency mode'' since the splitting into symmetric and antisymmetric modes for the prolate spheroidal particle studied was not obvious with the dimensions studied in Ref. [12]. Furthermore, the temperature effects on SERS from these nanoshells were not studied previously and also the semiconducting core used in [12] can have complicated temperature effects not accounted for in the previous modeling.…”