Surface spectroscopies and microscopies

Novel nanostructured and low-dimensional systems are of keys interes for ICT applications, as well as for promising cost-effective and sustainable energy solutions. Examples of such systems comprise:

  • oxide films, nanostructures and nanoparticles, with application in photocatalysts, fuel cells, and third-generation photovoltaic devices;
  • atomically-precise graphene nanostructures and 2D metal-dichalcogenides systems, which display novel and intriguing electronic and optical properties; -
  • hybrid molecular magnets/inorganic substrate interfaces.

At FIM, advanced spectroscopies and scanning microscopies (STM, AFM) are exploited - both on campus and at synchrotron radiation and free-electron laser facilities – for a thorough characterization of the nanoscale properties of such materials. Among the available on-campus techniques, high-resolution electron energy loss spectroscopy represents a powerful tool to investigate both localized vibrational modes and collective excitation (phonon, plasmon, excitons) dispersions. Moreover, pump-probe spectroscopies - performed with shared table top ultrafast laser facilities (SPRINT Trieste and EFSL Roma) and with the free electron laser FERMI at the ELETTRA laboratories in Trieste - allow us to investigate the transient mechanisms at the base of photocatalysis and photovoltaic effects, down to femtosecond time scales.

Images adapted from Nanoscale 12, 19681 (2020) and Nanoscale 11, 10282 (2019).


People: Dr. R. Biagi, Prof. S. D’Addato, Prof. V. De Renzi; Dr. A. di Bona (CNR), Dr. P. Luches (CNR), Dr. S. Benedetti (CNR)

[Ultimo aggiornamento: 03/02/2021 12:23:57]