Functional nanomaterials with superior properties are developed by means of laser-based surface processing and deposition methods.
Field of interest
The technologies based on laser irradiation of materials are characterized by their rapid and adaptable nature, letting high spatial resolution fabrication and scalability to the industrial sector. Moreover, laser methods allow the materials synthesis in chemical pathways that cannot be developed by conventional techniques. The work of LPR group is focused on the synthesis of nanostructured functional materials by means of different laser techniques. Laser Surface Processing (LSP) and Laser Direct Write (LDW) are used for the chemical-structural transformation and localized transfer of materials; Matrix Assisted Pulsed Laser Evaporation (MAPLE) and Pulsed Laser Deposition (PLD) allow the deposition of coatings.
High quality organic-inorganic thin films composed of nanostructures such as semiconductor quantum dots, metallic and metal oxide nanoparticles, carbon nanotubes and graphene-derivatives are developed for energy, environmental, and electronics applications.
- LSP method allows surface heating, melting and vaporization of a wide variety of materials (organics, metals, oxides, hybrids, etc.)
- Through LDW processes, high-precision patterns can be fabricated by means of surface processing and laser-induced forward transfer of voxels.
- LSP and LDW processes can be performed in controlled environmental conditions (air, vacuum, gas, liquid) through CW and pulsed lasers (450, 532 nm wavelengths).
- Laser marking, machining and localized transfer are performed with micrometric resolution by means of pulsed lasers (1064, 532 and 266 nm emission wavelengths).
- Controlled deposition of thin films is carried out by MAPLE and PLD in inert/reactive ambient with thickness in the nanometric to micrometric range. Reactive deposition allows simultaneous tuning of chemical composition.
- Particular experience in:
* Development of nanocarbon-based hybrid electrodes for energy storage and environmental applications (especially in supercapacitor devices and photocatalysts for organic materials decomposition).
* Structural-compositional characterization of nanomaterials.
* Electrical characterization of materials by current-voltage, four-probe, and van der Pauw methods.
* Electrochemical studies of electrodes and devices by means of cyclic voltammetry, galvanostatic charge-discharge, electrochemical impedance spectroscopy, and step potential electrochemical spectroscopy.
* Numerical simulations, computer programming and advanced data treatment.