Resumo – Publicações

Surface plasmon resonances in silver nanostars.
GÓMEZ, Faustino Reyes; RUBIRA, Rafael J. G.; CAMACHO, Sabrina A.; MARTIN, Cibely S.; SILVA, Robson R.; CONSTANTINO, Carlos J. L.; ALESSIO, Priscila; OLIVEIRA JUNIOR, Osvaldo Novais de; MEJÍA-SALAZAR, J. Ricardo.
Abstract: The recent development of silver nanostars (Ag-NSs) is promising for improved surface-enhanced sensing and spectroscopy, which may be further exploited if the mechanisms behind the excitation of localized surface plasmon resonances (LSPRs) are identified. Here, we show that LSPRs in Ag-NSs can be obtained with finite-difference time-domain (FDTD) calculations by considering the nanostars as combination of crossed nanorods (Ag-NRs). In particular, we demonstrate that an apparent tail at large wavelengths (??700 nm) observed in the extinction spectra of Ag-NSs is due to a strong dipolar plasmon resonance, with no need to invoke heterogeneity (different number of arms) effects as is normally done in the literature. Our description also indicates a way to tune the strongest LSPR at desired wavelengths, which is useful for sensing applications.
Sensors
v. 18, n. 11, p. 3821-1-3821-9 - Ano: 2018
Fator de Impacto: 2,475
https://doi.org/10.3390/s18113821
    @article={002912521,author = {GÓMEZ, Faustino Reyes; RUBIRA, Rafael J. G.; CAMACHO, Sabrina A.; MARTIN, Cibely S.; SILVA, Robson R.; CONSTANTINO, Carlos J. L.; ALESSIO, Priscila; OLIVEIRA JUNIOR, Osvaldo Novais de; MEJÍA-SALAZAR, J. Ricardo.},title={Surface plasmon resonances in silver nanostars},journal={Sensors},note={v. 18, n. 11, p. 3821-1-3821-9},year={2018}}