Objective Research objectives and content This proposal is to explore the performances of surface-relief gratings in novel diffractive devices, capable of generating synthetic infrared spectra which could be used as chemical sensors for correlation spectroscopy. Such elements have continuous-relief profiles and can be fabricated by a computer controlled laser direct writing system, capable of locally modulating the exposure dose released to a sensitive film. A single lithographic process will produce a surface-relief, ready to be transferred into the substrate by dry etching. Hence, classic alignment difficulties, existing in standard multi-level fabrication processes, will be skipped. The applicant's work is divided in two main tasks: a) Realization of an optimisation software program for designing the desired diffractive function, using scalar and rigorous diffraction theories,. b) Fabrication and testing of the diffractive element resulting from the previous design step Training content (objective, benefit and expected impact) a) Realization of smart, diffractive sensors capable to detect the presence of gases even if they are harmful or difficult to handle. b) Know-how transfer toward local research students, through the applicant's supervision of a couple of degree thesis in this field. Links with industry / industrial relevance (22) Even if no direct industrial links exist at this stage, the host institution is already involved, in programs with Italian industries, for realizing surface-relief devices. Fields of science natural sciencescomputer and information sciencessoftwareengineering and technologyelectrical engineering, electronic engineering, information engineeringelectronic engineeringsensorsnatural sciencesphysical sciencesopticslaser physicsnatural sciencesphysical sciencesopticsspectroscopy Programme(s) FP4-TMR - Specific research and technological development programme in the field of the training and mobility of researchers, 1994-1998 Topic(s) 0302 - Post-doctoral research training grants TP04 - Optics Call for proposal Data not available Funding Scheme RGI - Research grants (individual fellowships) Coordinator Università degli Studi di Palermo EU contribution No data Address Viale delle Scienze 90128 Palermo Italy See on map Total cost No data
