AFM Laser Texturing on Chitosan/Au Precursor nanocomposite Materials for Lithography Technique

Innovative conductive nanocomposite materials (NCM) could represent an important evolution for sensors and electronics applications. The design and processing of conductive elements as electrodes directly in a polymeric bulk material can be considered as an interesting improvement. By this way, the use of an Atomic Force Microscope (AFM) instrument with its accurate and precise motorized table and its implemented laser can be used for designing conductive elements in polymeric materials. In that case, 805 nm infrared (IR) laser light from the AFM instrument inducing surface texturing on Chitosan/Au Precursor (C/AuP) substrate is reported. Surface patterns consisting of designed structures were produced by laser texturing. By fine-tuning key parameters as the programmed movement of the motorized table supporting the substrate in accordance to the laser movement as well as the working distance, Au nanoparticles (AuNP) were locally generated. Micro patterns have been generated on the nanocomposite C/AuP surface. By the use of NCM able to generate in-situ nanoparticles (NP) under light stimulation, micro structures can be generated on the NCM surfaces, preserving their flexibility and easy processability. Control of conductive properties is desirable in a wide range of domains as medicine, health care and industry in particular, especially, if the material properties can be modified by a simple technique.