Automated self-assembly and electrical characterization of nanostructured films

Author(s)

Hensel, Rafael C. ^[1] ; Rodrigues, Kevin L. ^[1] ; Pimentel, Vinicius do L. ^[2] ; Riul, Jr., Antonio ^[1] ; Rodrigues, Varlei ^[1]

Affiliation

^[1] Univ Campinas UNICAMP, Gleb Wataghin Inst Phys, Dept Appl Phys, BR-13083970 Campinas, SP - Brazil

^[2] Informat Technol Ctr Renato Archer, BR-13069901 Campinas, SP - Brazil

• Document type: Journal article
• Source: MRS COMMUNICATIONS; v. 8, n. 2, p. 283-288, JUN 2018.
• Web of Science Citations: 1

Abstract

Significant progress in nanoscience was achieved through the development of methods and instruments to better comprehend nanoscale properties. We present here a methodology and automated setup to measure layer-by-layer films capacitance in the air immediately after polyelectrolytes adsorption. It presents high accuracy (similar to 0.01 pF) to check the capacitance stabilization during spontaneous drying process in the air, with sensitivity to show electrical signal alternation accordingly to the outermost polyelectrolyte layer. Besides, a linear trend in capacitance was observed similar to UV-vis measurements. This method allows analyzing films electrical properties, affording better choice of materials, thickness, and molecular architecture. (AU)

• FAPESP's process: 14/03691-7 - Fabrication of microfluidic devices envisanging aplications in precision agriculture and bioenergy
• Grantee: Antonio Riul Júnior
• Support Opportunities: Program for Research on Bioenergy (BIOEN) - Regular Program Grants