Discipline: Nanoscience or Materials Science
Subcategory: Materials Science
Ashleigh K Wilson - Norfolk State University
Co-Author(s): Paula Fortuno; Norfolk State University; Norfolk, VADr. Mohammad Shabuddin; Norfolk State University; Norfolk, VADr. Natalia Noginova; Norfolk State University; Norfolk, VA
Modification of various physical and chemical processes in a plasmonic environment presents interest from both fundamental and applicable aspects, as it provides possibility to control these processes at the nanoscale. Based on our recent results of significant acceleration using an electrochemical reaction with plasmonic light, we infer that electrochemical growth of a polyaniline (PANI) film can be controlled by a plasmonic environment and light illumination. Using cyclic voltammetry (CV) technique, we monitor the PANI film growth on various substrates, with and without laser light illumination, and analyze corresponding CV curves. The peak currents and positions are found to be dependent on the substrate used (flat or nanostructured) and laser light illumination, indicating faster growth at nanostructured substrates and under the light. The thickness measurements of fabricated films show that the thickness of the area exposed to light illumination can be significantly higher than the unexposed film, depending on the laser light illumination intensity and wavelength. In conclusion, our data indicates that electrochemical deposition can be significantly modified with plasmonic light. As for the next step, we plan to test the spatial resolution of the response to laser illumination and grow PANI films under a light interference pattern.
Funder Acknowledgement(s): NSF 1830886, 1856515, and 2112595; AFOSR FA9550-18-1-0417; DoD W911NF1810472; DOE NNSA DE-NA0004007, and DOE DE-NA-0003525.
Faculty Advisor: Dr. Natalia Noginova, firstname.lastname@example.org
Role: I assisted with the previous research referred to in the abstract and worked with a research to complete this work. We worked with PANI using a CV technique and made the analysis together with our advisor.