Carrying out the Lithuanian-French cooperation project, a large variety of micro and nano structures were formed, which are expected to be used for gas sensors. Employing holographic lithography lines of critical dimension <100 nm were formed in the photoresist at KTU MMI during the first year of the project. In the future these nanostructures are planned to be transferred into the substrate utilizing the deep reactive plasma etching. Such structures at IMN are used to form gold nanowires. Based on the face-to-face discussions of the first results the research plan was slightly updated. At KTU MMI additionally to the planned ones more micrometric and sub-micrometric structures in the photoresists and directly in copper and DLC:Ag nanocomposite films were imposed. In 2018, it is planned to use these structures for further development of the nanostructures at IMN. During the exchange visit at KTU MMI the gold nanowire samples formed at IMN were studied using the pump-probe spectroscopy. The differential absorption results demonstrated fast (~ 1 ps) and slow (~ 100 ps) decays that were ascribed to localized surface plasmon resonance (LSPR). Raman spectroscopy was used to estimate the LSPR enhanced Raman scattering of laser-exposed DLC: Ag and silver nanocomposite films and regular nanoparticle arrays.
Project funding:
Interngovernmental programme administrated by Research Council of Lithuania: Lithuania–France (“GILIBERT”)
Project results:
The results showed that the 1.3 ?m periodic structure of DLC: Ag and regular nanoparticle arrays effectively enhance Raman scattering signal. All the planned visits took place (KTU and IMN).
Period of project implementation: 2017-01-02 - 2018-12-31
Project coordinator: Kaunas University of Technology
Project partners: University of Nantes
