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Synthesis and microbiological analysis of polymer substrates coated with TiO2 and / or Al2O3 ultra-thin films by atomic layer deposition technology


Atomic layer deposition (ALD) has been shown to be an attractive technology to deposit thin films for many advanced applications from nanotechnology to biomedicine. This research project aims to investigate the growth and properties of atomic layer deposited titanium dioxide (TiO2) and/or aluminum oxide (Al2O3) thin films on polyurethane (PU), polydimethylsiloxane (PDMS) and polyvinyl chloride (PVC) substrates, and discusses their effect on the growth and inactivation process, in case of contamination, of the yeast of the genus Candida albicans. These substrates are often used in the synthesis of medical-hospital devices such as the long-term catheter, which may be susceptible to microbiological contamination. For these, the physical, chemical and antifungal assays will be evaluated. In the ALD process of the TiO2 film, TiCl4 and H2O will be used as precursors, whereas for the Al2O3 film, the Al(CH3)3 and H2O precursors will be used. All the processes will be carried out at a fixed temperature of 80 °C, while the number of the reaction cycle for film growth will be varied from 500 to 2000. The effect of the insertion of Al2O3 nanolayers on the TiO2 film will also be investigated. For biological analyses, yeasts of standards trains of C. albicans (ATCC 10231) will be grown on non-coated and coated substrates and then the antifungal and photocatalytic activities of the films will be investigated using colony-forming units (CFU) counts before and after UV-light treatment. Several chemical, physical and physical-chemistry techniques will be used to evaluate the growth kinetics, elemental composition, material structure, chemical bonds, contact angle, work of adhesion and surface morphology of the ALD thin films on both substrates. Finally, the development/construction of a cross-flow type ALD thermal reactor is proposed, as the researcher has acquired, in recent years, sufficient know-how in a commercial ALD machine (Beneq TFS-200, project FAPESP/PRONEX 2011/50773-0). This equipment will be developed considering a future treatment of three-dimensional substrates such as catheters. (AU)

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Scientific publications (20)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
DIAS, VANESSA; MACIEL, HOMERO; FRAGA, MARIANA; LOBO, ANDERSON O.; PESSOA, RODRIGO; MARCIANO, FERNANDA R.. Atomic Layer Deposited TiO2 and Al2O3 Thin Films as Coatings for Aluminum Food Packaging Application. MATERIALS, v. 12, n. 4, . (14/18139-8, 11/50773-0, 11/17877-7, 12/15857-1, 11/20345-7, 16/00575-1, 15/05956-0, 15/09697-0, 18/01265-1, 15/10876-6)
DIAS, V. M.; CHIAPPIM, W.; FRAGA, M. A.; MACIEL, H. S.; MARCIANO, F. R.; PESSOA, R. S.. Atomic layer deposition of TiO2 and Al2O3 thin films for the electrochemical study of corrosion protection in aluminum alloy cans used in beverage. MATERIALS RESEARCH EXPRESS, v. 7, n. 7, . (18/01265-1, 14/18139-8, 16/17826-7)
UEBELE, DANIELA T. R.; SOTO, CLAUDIO A. TELLEZ; GALVA, NIERLLY K. A. M.; TIM, CARLA R.; SOBRINHO, ARGEMIRO S. DA SILVA; PESSOA, RODRIGO S.; DOS SANTOS, LAURITA. Ozonizing sunflower oil using Fourier-transform infrared spectroscopy for product characterization. VIBRATIONAL SPECTROSCOPY, v. 123, p. 6-pg., . (18/01265-1, 19/00558-8, 18/03517-8)
CHIAPPIM, WILLIAM; SAMPAIO, ALINE DA GRACA; MIRANDA, FELIPE; FRAGA, MARIANA; PETRACONI, GILBERTO; DA SILVA SOBRINHO, ARGEMIRO; KOSTOV, KONSTANTIN; KOGA-ITO, CRISTIANE; PESSOA, RODRIGO. Antimicrobial Effect of Plasma-Activated Tap Water on Staphylococcus aureus, Escherichia coli, and Candida albicans. WATER, v. 13, n. 11, p. 16-pg., . (19/05856-7, 20/10450-7, 19/25652-7, 18/01265-1)
BALLESTERO, MATHEUS; DORIA, ANELISE C. O. C.; PESSOA, RODRIGO S.; RODRIGUES, BRUNO V. M.. Enhancing microbiostatic properties of silicone catheters with Al2O3 coatings deposited by atomic layer deposition. Materials Letters, v. 344, p. 5-pg., . (20/08485-7, 18/01265-1, 19/16685-9)
CHIAPPIM, WILLIAM; FRAGA, MARIANA AMORIM; FURLAN, HUMBER; ARDILES, DAVID CESAR; PESSOA, RODRIGO SAVIO. The status and perspectives of nanostructured materials and fabrication processes for wearable piezoresistive sensors. MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROC, v. 28, n. 7, p. 20-pg., . (18/01265-1, 20/10450-7)
CHIAPPIM, WILLIAM; NETO, BENEDITO BOTAN; SHIOTANI, MICHAELA; KARNOPP, JULIA; GONCALVES, LUAN; CHAVES, JOAO PEDRO; SOBRINHO, ARGEMIRO DA SILVA; LEITAO, JOAQUIM PRATAS; FRAGA, MARIANA; PESSOA, RODRIGO. Plasma-Assisted Nanofabrication: The Potential and Challenges in Atomic Layer Deposition and Etching. NANOMATERIALS, v. 12, n. 19, p. 32-pg., . (21/03620-6, 20/10450-7, 18/01265-1)
NASCIMENTO, LARISSA; GASI, FERNANDO; LANDERS, RICHARD; DA SILVA SOBRINHO, ARGEMIRO; ARAGAO, EDUARDO; FRAGA, MARIANA; PETRACONI, GILBERTO; CHIAPPIM, WILLIAM; PESSOA, RODRIGO. Physicochemical Studies on the Surface of Polyamide 6.6 Fabrics Functionalized by DBD Plasmas Operated at Atmospheric and Sub-Atmospheric Pressures. POLYMERS, v. 12, n. 9, p. 17-pg., . (15/23315-2, 16/17826-7, 18/01265-1)
CHIAPPIM, WILLIAM; SAMPAIO, ALINE DA GRACA; MIRANDA, FELIPE; FRAGA, MARIANA; PETRACONI, GILBERTO; DA SILVA SOBRINHO, ARGEMIRO; KOSTOV, KONSTANTIN; KOGA-ITO, CRISTIANE; PESSOA, RODRIGO. ntimicrobial Effect of Plasma-Activated Tap Water on Staphylococcus aureus, Escherichia coli, and Candida albican. WATER, v. 13, n. 11, . (19/25652-7, 19/05856-7, 18/01265-1, 20/10450-7)
CHIAPPIM, WILLIAM; FRAGA, MARIANA AMORIM; MACIEL, HOMERO SANTIAGO; PESSOA, RODRIGO SAVIO. An Experimental and Theoretical Study of the Impact of the Precursor Pulse Time on the Growth Per Cycle and Crystallinity Quality of TiO2 Thin Films Grown by ALD and PEALD Technique. FRONTIERS IN MECHANICAL ENGINEERING-SWITZERLAND, v. 6, . (16/17826-7, 18/01265-1, 11/50773-0)
CHIAPPIM, WILLIAM; WATANABE, MARCOS; DIAS, VANESSA; TESTONI, GIORGIO; RANGEL, RICARDO; FRAGA, MARIANA; MACIEL, HOMERO; DOS SANTOS FILHO, SEBASTIAO; PESSOA, RODRIGO. MOS Capacitance Measurements for PEALD TiO2 Dielectric Films Grown under Different Conditions and the Impact of Al2O3 Partial-Monolayer Insertion. NANOMATERIALS, v. 10, n. 2, . (18/01265-1, 15/05956-0, 11/50773-0, 15/10876-6, 16/17826-7)
CHIAPPIM, WILLIAM; TESTONI, GIORGIO; MIRANDA, FELIPE; FRAGA, MARIANA; FURLAN, HUMBER; SARAVIA, DAVID ARDILES; SOBRINHO, ARGEMIRO DA SILVA; PETRACONI, GILBERTO; MACIEL, HOMERO; PESSOA, RODRIGO. Effect of Plasma-Enhanced Atomic Layer Deposition on Oxygen Overabundance and Its Influence on the Morphological, Optical, Structural, and Mechanical Properties of Al-Doped TiO2 Coating. MICROMACHINES, v. 12, n. 6, . (20/10450-7, 18/01265-1)
GALVAO, NIERLLY; GUERINO, MARCIEL; CAMPOS, TIAGO; GRIGOROV, KORNELI; FRAGA, MARIANA; RODRIGUES, BRUNO; PESSOA, RODRIGO; CAMUS, JULIEN; DJOUADI, MOHAMMED; MACIEL, HOMERO. The Influence of AlN Intermediate Layer on the Structural and Chemical Properties of SiC Thin Films Produced by High-Power Impulse Magnetron Sputtering. MICROMACHINES, v. 10, n. 3, . (18/01265-1, 11/50773-0, 14/18139-8)
JUNIOR, ARMSTRONG GODOY; PEREIRA, ANDRE; GOMES, MARCILENE; FRAGA, MARIANA; PESSOA, RODRIGO; LEITE, DOUGLAS; PETRACONI, GILBERTO; NOGUEIRA, ADAILTON; WENDER, HEBERTON; MIYAKAWA, WALTER; et al. Black TiO2 Thin Films Production Using Hollow Cathode Hydrogen Plasma Treatment: Synthesis, Material Characteristics and Photocatalytic Activity. CATALYSTS, v. 10, n. 3, . (18/01265-1, 15/06241-5)
GALVAO, NIERLLY; VASCONCELOS, GETULIO; PESSOA, RODRIGO; MACHADO, JOAO; GUERINO, MARCIEL; FRAGA, MARIANA; RODRIGUES, BRUNO; CAMUS, JULIEN; DJOUADI, ABDOU; MACIEL, HOMERO. A Novel Method of Synthesizing Graphene for Electronic Device Applications. MATERIALS, v. 11, n. 7, . (11/50773-0, 18/01265-1, 14/18139-8, 17/18826-3)
DE SOUZA, P. R. F.; SOUZA, G. C. C.; PINTO, J. V. F. A.; DORIA, A. C. O. C.; NASCIMENTO, L. M.; GOMES, M. C.; DA SILVA SOBRINHO, A. S.; PETRACONI, G.; SAGAS, J. C.; RODRIGUES, B. V. M.; et al. Effect of Ozone Exposure on Water Uptake and Germination of Lentil (Lens Culinaris) Seeds. OZONE-SCIENCE & ENGINEERING, v. 43, n. 1, p. 48-59, . (18/01265-1)
PESSOA, RODRIGO SAVIO; CHIAPPIM JUNIOR, WILLIAM; TESTONI, GIORGIO ERNESTO; PETRACONI FILHO, GILBERTO; MACIEL, HOMERO SANTIAGO; IEEE. On the influence of conductor, semiconductor and insulating substrate on the structure of atomic layer deposited titanium dioxide thin films. 2018 33RD SYMPOSIUM ON MICROELECTRONICS TECHNOLOGY AND DEVICES (SBMICRO), v. N/A, p. 6-pg., . (11/50773-0, 18/01265-1)
FRAGA, MARIANA; PESSOA, RODRIGO. Progresses in Synthesis and Application of SiC Films: From CVD to ALD and from MEMS to NEMS. MICROMACHINES, v. 11, n. 9, p. 23-pg., . (14/18139-8, 18/01265-1)
RODRIGUES, BRUNO V. M.; DIAS, VANESSA M.; FRAGA, MARIANA A.; DA SILVA SOBRINHO, ARGEMIRO S.; LOBO, ANDERSON O.; MACIEL, HOMERO S.; PESSOA, RODRIGO S.. Atomic layer deposition of TiO2 thin films on electrospun poly (butylene adipate-co-terephthalate) fibers: Freestanding TiO2 nanostructures via polymer carbonization. MATERIALS TODAY-PROCEEDINGS, v. 14, p. 7-pg., . (15/10876-6, 17/18826-3, 15/09697-0, 11/50773-0, 12/15857-1, 11/20345-7, 16/00575-1, 15/05956-0, 18/01265-1)
TONELI, D. A.; PESSOA, R. S.; ROBERTO, M.; GUDMUNDSSON, J. T.. A global model study of low pressure high density CF4 discharge. PLASMA SOURCES SCIENCE & TECHNOLOGY, v. 28, n. 2, . (18/01265-1, 15/16471-8)

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