Carbon-based devices and Materials processing by Laser

Title:
Carbon-based devices and Materials processing by Laser

Speaker:
Dr. Alexandre Carvalho,
i3N- Aveiro, Physics Department of the University of Aveiro

Abstract:

At the LASECAT - Laser Sustainable Engineering and Carbon Advanced Technologies Group at i3N in the Physics Department of the University of Aveiro, two main areas of research are brought together: CVD synthesis of carbon-based materials, from diamond to graphene and the synthesis and modification of materials by laser processing. These areas overlap with the research on LIG- Laser induced graphene, a graphitic foam obtained by the instant pyrolysis of carbon-containing substrates, explored to produce mechanical and chemical sensors and actuators.

In this talk, I will talk about different activities in the group, covering different applications of LIG, some results about the production and characterization of Graphene Field Effect Transistor (GFETs) applied to biosensing, and the introduction of laser processing in different industry related processes.s.

Biography:
Dr. Alexandre Faia Carvalho, researcher at i3N – Institute of Nanostructures, Nanomodelling and Nanofabrication, and the Physics Department of the University of Aveiro. Since 2013, his research activities focus on carbon-based nanomaterials, in particular graphene, with emphasis on laser patterning, surface engineering, and the development of advanced transducers. His PhD work established new approaches for UV-laser fabrication of laser-induced graphene and novel techniques for transferring and suspending CVD graphene over millimetre-scale cavities.
He has been involved in multiple national and European research projects related to graphene-based sensors, laser microfabrication, and functional materials. His research contributions include world-record suspension of few-layer graphene membranes, as well as key advances in graphene-based mechanical and physical sensors.
Dr. Carvalho supervises undergraduate and graduate students in engineering physics and materials science, and frequently participates in outreach and training activities. He also contributes to the development of graphene-based microdevices in the cleanroom facilities of the University of Aveiro.
(email: alexandre.carvalho@ua.pt)