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Functional Coatings (GRF)

Group Members

Effective Members:

-Martin Andritschky, Full Professor

-Luís Rebouta, Associate Professor with Habilitation

-Filipe Vaz, Associate Professor with Habilitation

-Vasco Teixeira, Associate professor

-Cacilda Moura, Assistant Professor

-Carlos Tavares, Assistant Professor

-Joaquim Carneiro, Assistant Professor

-Luís Cunha, Assistant Professor

-Sandra Carvalho, Assistant Professor

-Teresa Aroso, Assistant Professor



Researchers:

-Stanislav Ferdov, Researcher

- Diego Martinez, Researcher



Associate Member:

-Li-Jian Meng (ISEP)



Post-Doctorate Researchers and Research Fellows with PhD:

-Joel Borges, Pos Doc



PhD Students:

-Armando Ferreira, FCT Grant

-Cláudia Lopes, FCT Grant (BI)

-Cibeli Garcia, FCT Grant

-Fernando Ribeiro, FCT Grant

-Isabel Carvalho, FCT Grant

-Isabel Ferreri, FCT Grant

-Mariana Marques, FCT Grant

-Noora Manninen, FCT Grant

-Rita Rebelo, FCT Grant

-Paulo Batista Pedrosa, FCT Grant

-Sebastian Calderon Velasquez, FCT Grant

-Salmon Landi, FCT Grant



- Information on the group’s research areas

The objectives of the group are two fold: 1. As a whole the group wants to provide an adequate infrastructure to the individual researchers to perform R&D directed to the processes of synthesis and characterization of thin films, obtained by both Physical (PVD) and Chemical (CVD) Vapour Deposition techniques. This line of work has been important within the framework of the development of new concepts of materials (in the form of coatings/thin films) in the nanometer scale and improvement of the performance of materials for a given scientific or technological application. Emphasis is placed on those aspects of the materials science that are concerned with the relationships between synthesis, structure/composition, properties, and modeling/simulation of thin functional nano- structured coatings.  A major focus is develop the technology to deposit the coatings by low temperature processes on polymeric substrates.  2. The individual researchers are encouraged to lead or participate in research projects, seeking collaborations within and outside of the group in the main areas of competence of the group :

 

a. Thin films for high efficient energy conversion: The present focus is direct the production and characterization  of nanocomposites consisting in  NiCr- Cr2O3, Cr-Cr2O3, Ti-TiNxOy, ZrOxNy and Mo-AlN for selective optical surface properties. Electrochromic WO3 was deposited on glass substrates. The production of TCO thin films on flexible substrates is also part of this research area.

b. Photocatalytic thin films with self cleaning properties: The focus was on TiO2 thin films (produced by magnetron sputtering) with band gap variations by controlled impurity contents.

c. Decorative thin films: Oxynitrides and –carbides  like  MeNxOy and MeCxOy, with Me = Ti, Cr, Zr e Al, are produced by reactive sputtering

d. Nanotechnology applied to biological systems: This new research área began in 2007 in colloboration with S. Marcos Hospital in Braga. Several research projects have been submitted, as well as colloboration request with the future Iberian Institute for Nanotechnology (INL). A specific research project entitled: “Development of coatings with low friction and wear rate not allowing high adhesion and biofilm formation by pathogenic micro-organisms” has been endured. Additionally, several Group members are active  in extending their research capabilities in the teaching field within this área, namely in the Doctoral course Nanomedicine.

Between 2003 and 2006, the group published ca. 70 scientific articles in ISI referenced journals with an average of 2.1 articles per group member and year. Researchers of the group participated, successfully, in 4 European projects. The success of these collaborations is partly expressed by the fact that the group applied in the 1st phase of the FP7 framework program to 6 collaborative research projects.

Due to the investments done during this period, together with the national projects for re-equipment, the group has now direct access to a very complete set of experimental facilities to produce thin coatings and to characterise the coating properties. The equipment include several PVD thin film deposition systems, Laserstructuring for small sensors, nano-indenter, calo-tester, low angle XRD, high resolution SEM, Pin on disk tribo tester, 4-point bending tests for thin films, optical transmittance measurement, colour measurement and electrical characterization. To expand our deposition capabilities onto polymers the future group focus is now directed to the acquisition of a PECVD (remote plasma) deposition system.

On a scientific level we successfully produced decorative coatings on metals, which are now applied in industry and gave origin to a patent application. The efforts in the relatively new area of photocatalytic coatings was recognized inviting the main researcher as a representative of Portugal in a European Cost program (COST Action 540-PHONASUM). In the field of nanocomposite coatings for smart and efficient energy systems a new nanograded film solar absorber based in TiNyOx was developed and the correspondent technology was published in the Minho University technology portfolio. TCO thin films based in ITO and GZO deposited at room temperature on plastics were successfully incorporated in a novel hybrid organic-inorganic flexible electrochromic device.


- Photos of laboratories and research materials


Sputtering Laboratory II


High vacuum furnace


Sample preparation laboratory


Surfaces laboratory
 



Photocatalytic degradation of textile colour dyes by irradiating with light a quartz liquid cell in the presence of a titania thin film catalyst sample.



Decorative thin films: Oxynitrides and –carbides  like  MeNxOy and MeCxOy, with Me = Ti, Cr, Zr e Al, are produced by reactive sputtering


- Recent papers

Papers inserted in RepositoriUM

- Group site.

www.fisica.uminho.pt/grf


 
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