title: Magnetic nanoparticle film reconstruction modulated by immersion within DMSA aqueous solution.
abstract: The process of reconstruction of pre-fabricated films comprising maghemite nanoparticles deposited onto flat glass substrates triggered by immersion into aqueous solutions of meso-2,3-dimercaptosuccinic acid (DMSA) at increasing concentration (0.025, 0.050, and 0.100 mol/L) is herein reported. The evolution of this process was assessed by measuring the time (t) dependence of the particle analysis histogram width (W) extracted from atomic force microscopy images. Furthermore, a physical picture to model the film reconstruction which provides reconstruction time constants associated to single particles (τ1) and small agglomerates (τn), the key units associated to the process, ranging from τ1 = 2.9 and τn = 3.4 hour (0.025 mol/L) to τ1 = 5.1 and τn = 4.6 hour (0.100 mol/L) is proposed. The nanoparticle-based film reconstruction triggered by an exogenous stimulus, the use of the W versus t data to describe the process and the model picture accounting for the recorded data have not been previously reported.
authors.affiliation: Wuhan Technology and Business University, School of Information Engineering, Wuhan 430065, China.
authors.forename: Qing
authors.initials: Q
authors.lastname: Xiang
authors.affiliation: Universidade de Brasília, Instituto de Física, Brasília DF 70910-900, Brazil.
authors.forename: Cimei Borges
authors.initials: CB
authors.lastname: Teixeira
authors.affiliation: University of Houston, Department of Mechanical Engineering, Houston TX 77204, USA.
authors.forename: Li
authors.initials: L
authors.lastname: Sun
authors.affiliation: Huazhong University of Science and Technology, School of Automation, Wuhan 430074, China.|Universidade de Brasília, Instituto de Física, Brasília DF 70910-900, Brazil.
authors.forename: Paulo Cesar
authors.initials: PC
authors.lastname: Morais