KRAKOW CONDENSED MATTER SEMINAR and ACMiN Seminar: „When nanoparticles get hot”
This semester, the seminar so far organized by the Academic Center of Materials and Nanotechnology will be combined with the Krakow Condensed Matter Seminar. The day and time of the seminars are changed from Thursday 2 pm to Wednesday 9 am.
It is our pleasure to invite you to attend the KRAKOW CONDENSED MATTER SEMINAR and the ACMiN Seminar which will be held on Wednesday, March 22 at 9.00 a.m. in the ACMiN auditorium no.: 1.02A, on the second floor, bldg. D-16 (Kawiory Street 30). Those who cannot be present at ACMiN on that day are invited to join the seminar on-line, on the Teams platform, at the following link:
The lecture entitled „When nanoparticles get hot” will be presented by dr Francesco Bisio (CNR-SPIN, Genova, Italy).
Abstract:
The impulsive photoexcitation of metallic nanoparticles (NPs) kicks off a complex relaxation process involving the time-dependent re-equilibration of the electron gas, ion lattice, and NP environment. These dynamic processes and the energy redistribution among the system’s degrees of freedom lie at the very heart of several highly-intriguing light-induced physical phenomena, such as photocatalysis, thermoplasmonics and solar energy conversion. Highly energetic non-thermal electrons (available in the first few hundreds of fs following the excitation), in particular, play a pivotal role in determining the final outcome of photocatalytic reactions, whereas the lattice-temperature evolution is instrumental for thermoplasmonics heating. In order to fully understand and harness these processes, it is necessary to know the dynamic, time-dependent evolution of the temperature of each system subcomponents.
In this talk, I will introduce various experimental approaches to directly deduce the temporal evolution, on the fs-to-ps time scale, of the electronic and lattice temperature of plasmonic NPs excited by ultrashort laser pulses [1,2], and discuss the intriguing physics and applications of hot metallic particles.