Colóquio vai abordar a resposta óptica linear e não linear de nano-objetos
Aberto ao público, o evento ocorrerá na sexta-feira (21) no auditório do próprio DF
O colóquio que o Departamento de Física da UFPE (DF) promoverá, nesta sexta-feira (21), às 16h, será com o professor Fabrice Vallée, da Universida de Lyon (França), que vai falar sobre “e Linear and nonlinear Optical response of a single nano-object”. Aberto ao público, o evento ocorrerá no auditório do próprio DF.
The large size dependence of the linear and nonlinear optical response of nano-objects has led to considerable interest in the academic and industrial domains. In particular, it has been extensively exploited to design new optical materials or to create nanosensors, opening the fields of nanophotonics and plasmonics. Because of the very weak optical response of a single object, most investigations have been performed simultaneously probing a large number of them. Only a mean response is thus obtained, masking the details of the individual particle response and limiting comparison with theoretical models. These limitations can be overcome by investigating a single nano-object, which requires development of very high sensitivity optical detection schemes. After briefly recalling the principles of the methods to detect light scattering or absorption by a single object, we will discuss investigation of single metal nanoparticles and carbon nanotubes by spatial modulation spectroscopy (SMS) and its extension to time-resolved nonlinear spectroscopy.
Secretaria de Pós-Graduação / Departamento de Física - UFPE