Margarida Isabel dos Santos Amaral

Post-doc Fellowship

Contact

Department

  • Materials and Ceramic Engineering

Short CV

Post-doc researcher in DECV.

PhD in Materials Science and Engineering, “Nanocrystalline diamond coatings for biomedical applications”, 2007.

Manager of one scientific project. Supervisor of 2 MSc dissertations. Co-author of 2 patents, 1 book chapter and more than 30 papers in journals included in the Science Citation Index.

Member of the editorial board of the Journal of Nanomaterials

Scientific Interests

CVD diamond and DLC coatings.

Carbon nanotubes.

NanoMaterials for biomedical applications.

Teaching Activity

Invited professor at the Mechanical Engineering Department of ISEP (2010/2011)

Present projects

As Principal Investigator: PTDC/EME-PME/112910/2009 “Silicon nitride ceramic components coated with nanocrystalline CVD diamond for total hip replacement – HIPCerDiam” .

As Team Member: PTDC/EME-TME/100689/2008 “Tribosystems based on multilayered micro/nanocrystalline CVD diamond coatings – MULTIDIACOAT”.

Selected Publications

Book chapter:

M. Vila, M.Amaral, “Biomedical Coatings”, In: J. Hu editor “Biomaterials: Chemistry and Physics. Recent Advances in Biomaterials Research” Transworld Research Network, Kerala, India, 2008.

Papers in international scientific periodicals with referees:

32. D. Mata, M. Amaral, A.J.S. Fernandes, F.J. Oliveira, P.M.F.J. Costa, R.F. Silva, Self-assembled cones of aligned carbon nanofibers grown on wet-etched Cu foils, Carbon, accepted for publication, doi: 10.1016/j.carbon. 2011.01.035.

31. E. Salgueiredo, M. Amaral, M.A. Neto, A.J.S. Fernandes, F.J. Oliveira, R.F. Silva, HFCVD diamond deposition parameters optimized by a Taguchi Matrix, Vacuum 2010, In Press, Corrected Proof, doi:10.1016/j.vacuum.2010.10.010.

30. D. Mata, M. Ferro, A.J.S. Fernandes, M. Amaral, F.J. Oliveira, P.M.F.J. Costa, R.F. Silva, Wet-etched Ni foils as active catalysts towards carbon nanofiber growth, Carbon 48 (2010) 2839 –2854

29. M. Amaral, F. Almeida, A.J.S. Fernandes, F.M. Costa, F.J. Oliveira, R.F. Silva, The role of surface activation prior to seeding on CVD diamond adhesion, Surface & Coatings Technology 204 (2010) 3585–3591

28. M. Amaral, C.S. Abreu, A.J.S. Fernandes, F.J. Oliveira, J.R. Gomes, R.F. Silva, Nanodiamond-based tribosystems, Surface & Coatings Technology 204 (2010) 1962–1969

27. C.S. Abreu, M. Amaral, F.J. Oliveira, J.R. Gomes, R.F. Silva, “HFCVD nanocrystalline diamond coatings for tribo-applications in the presence of water”, Diamond & Related Materials, 18 (2), p.271-275, Feb 2009

26. M. Amaral, D.J. Silva, A.J.S. Fernandes, F.M. Costa , F.J. Oliveira, R. F. Silva, “Surface activation pre-treatments for NCD films grown by HFCVD”, Vacuum 83 (2009) 1228–1232

25. E. Salgueiredo, F. Almeida, M. Amaral, AJS Fernandes, RF Silva, FJ Oliveira, “CVD diamond coated silicon nitride odontological mills”, Diamond & Related Materials, 18 (2), p.264-270, Feb 2009

24. M. Amaral, P.S. Gomes, M.A. Lopes, J.D. Santos, R.F. Silva, M.H. Fernandes, “Cytotoxicity evaluation of nanocrystalline diamond (NCD) coatings by fibroblast cell cultures” Acta Biomaterialia, 5 (2), p.755-763, Feb 2009

23. Margarida S. Amaral, Pedro S. Gomes, Maria A. Lopes, José D. Santos, Rui F. Silva, Maria H. Fernandes, “Nanocrystalline diamond as a coating for joint implants: cytotoxicity and biocompatibility assessment”, Journal of Nanomaterials, Volume 2008, Article ID 894352, 9 pages doi:10.1155/2008/894352

22. M. Amaral, A.G. Dias, P.S. Gomes, M.A. Lopes, R.F. Silva, J.D. Santos, M.H. Fernandes, “Nanocrystalline diamond: in vitro biocompatibility assessment by MG63 and human bone marrow cells cultures”, Journal of Biomedical Materials Research, 87A (1), 2008, 91-99.

21. M. Amaral, C.S. Abreu, F.J. Oliveira, J.R. Gomes, R.F. Silva, “Tribological characterization of NCD in physiological fluids”, Diamond & Related Materials, 17 (4-5), 2008, 848-852.

20. F.A. Almeida, M. Amaral, F.J. Oliveira, A.J.S. Fernandes, R.F. Silva, “Nano to micrometric HFCVD diamond adhesion strength to Si3N4", Vacuum 81 (11-12), 2007, 1443-1447.

19. M. Amaral, C.S. Abreu, F.J. Oliveira, J.R. Gomes, R.F. Silva, “Biotribological performance of NCD coated Si3N4 – bioglass composites” Diamond & Related Materials 16 (4-7), 2007, 790–795.

18. F.A. Almeida, M. Amaral, F.J. Oliveira, R.F. Silva, “Machining behaviour of silicon nitride tools coated with micro-, submicro- and nanometric HFCVD diamond crystallite sizes” Diamond & Related Materials, 15 (11-12), 2006, 2029-2034.

17. C.S. Abreu, M. Amaral, F.J. Oliveira, A.J.S. Fernandes, J.R. Gomes, R.F. Silva, “Enhanced performance of HFCVD nanocrystalline diamond self-mated tribosystems by plasma pretreatments on silicon nitride substrates” Diamond & Relat. Mater., 15 (11-12), 2006, 2024-2028.

16. M. Amaral, A.J.S. Fernandes, M. Vila, F.J. Oliveira, R.F. Silva, “Growth rate improvements in the hot-filament CVD deposition of nanocrystalline diamond” Diamond & Related Materials, 15 (11-12), 2006, 1822-1827.

15. M. Vila, M. Amaral, F.J. Oliveira, A.J.S. Fernandes, M.R. Soares, R.F. Silva, “A residual stress minimum in nanocrystalline diamond films” Applied Physics Letters, 89, 2006, 093109-1-3.

14. M. Vila, E. Salgueiredo, M.S. Amaral, A.J.S. Fernandes, F.M. Costa, A. Cavaleiro, R.F. Silva, “Hard a-C/DLC coatings on Si3N4-bioglass composites”, Diamond & Related Materials, 15 (4-8), 2006, 944-947.

13. C.S. Abreu, M. Amaral, A.J.S. Fernandes, F.J. Oliveira, R.F. Silva, J.R. Gomes, “Friction and wear performance of HFCVD nanocrystalline diamond coated silicon nitride ceramics”, Diamond & Related Materials, 15 (4-8), 2006, 739-744.

12. M. Amaral, E. Salgueiredo, F.J. Oliveira, A.J.S. Fernandes, F. Costa, R.F. Silva, “NCD by HFCVD on a Si3N4-bioglass composite for biomechanical applications” Surface and Coatings Technology, 200 (22-23), 2006, 6409-6413.

11. C.S. Abreu, M.S. Amaral, F. J. Oliveira, A. Tallaire, F. Bénédic, G. Cicala, J. R. Gomes, R. F. Silva, “Tribological testing of self-mated nanocrystalline diamond coatings on Si3N4 ceramics”, Surface and Coatings Technology, 200 (22-23), 2006, 6235-6239.

10. N.G. Ferreira, A.F. Azevedo, A.F. Beloto, M. Amaral, F.A. Almeida, F.J. Oliveira, R.F. Silva, “Nanodiamond films growth on porous silicon substrates for electrochemical applications”, Diamond & Related Materials, 14 (3-7), 2005, 441-445.

9. P. Bruno, F. Bénédic, A. Tallaire, F. Silva, F.J. Oliveira, M. Amaral, A.J.S. Fernandes, G. Cicala, R.F. Silva, “Deposition of nanocrystalline diamond films on silicon nitride ceramic substrates used pulsed microwave discharges in Ar/H2/CH4 gas mixture”, Diamond & Related Materials, 14 (3-7), 2005, 432-436.

8. M. Amaral, F. Mohasseb, F.J. Oliveira, F. Bénédic, R.F. Silva, A. Gicquel, “Nanocrystalline diamond coating of silicon nitride ceramics by microwave plasma assisted CVD”, Thin Solid Films, 482 (1-2), 2005, 232-236.

7. M. Amaral, F.J. Oliveira, M. Belmonte, A.J.S. Fernandes, F.M. Costa, R.F. Silva, “Hot-filament chemical vapour deposition of nanodiamond on silicon nitride substrates”, Diamond & related materials, 13 (4-8), 2004, 643-647.

6. M. Amaral, F.J. Oliveira, M.Belmonte, A.J.S. Fernandes, F.M. Costa, R.F. Silva, “Tailored Si3N4 Ceramic Substrates for CVD diamond coating”, Surface Engineering, 19 (6), 2003, 410-416.

5. M. Amaral, M.A. Costa, M.A. Lopes, R.F. Silva, J.D. Santos, M.H. Fernandes, “Si3N4-bioglass composites stimulate the proliferation of MG63 osteoblast-like cells and support the osteogenic differentiation of human bone marrow cells”, Biomaterials, 23, 2002, 4897-4906.

4. M. Amaral, M.A. Lopes, J.D. Santos, R.F. Silva, “Wettability and Surface charge of Si3N4-bioglass composites in contact with simulated physiological liquids”, Biomaterials, 23, 2002, 4123-4129.

3. M.S. Amaral, C.S. Abreu, F.J. Oliveira, J.D. Santos, R.F. Silva, J.R. Gomes, “Tribological characterization of Si3N4-Bioglass biocomposites in self-mating experiments and dissimilar tests against UHMWPE”, Key Engineering Materials, 230-232 (2002) 455-458.

2. M. Amaral, M.A. Lopes, R.F. Silva, J.D. Santos, “Densification route and mechanical properties of Si3N4-bioglass biocomposites”, Biomaterials, 23 (3), 2002, 857-862.

1. J.D. Santos, M. Amaral, S.M. Oliveira, M.A. Lopes and R.F. Silva, "Silicon Nitride-Bioglass Composite for Biomedical Applications", Key Engineering Materials, 192-195 (2001) pp. 589-592.

Projects

Publications

Three-dimensional printed PCL-hydroxyapatite scaffolds filled with CNTs for bone cell growth stimulation

Goncalves, EM; Oliveira, FJ; Silva, RF; Neto, MA; Fernandes, MH; Amaral, M; Vallet-Regi, M; Vila, M
2016, JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS, 104, 6, 1210-1219.

Extremely low wear rates in hip joint bearings coated with nanocrystalline diamond

Amaral, M; Maru, MM; Rodrigues, SP; Gouvea, CP; Trommer, RM; Oliveira, FJ; Achete, CA; Silva, RF
2015, TRIBOLOGY INTERNATIONAL, 89, 72-77.

The High performance of nanocrystalline CVD diamond coated hip joints in wear simulator test

Maru, MM; Amaral, M; Rodrigues, SP; Santos, R; Gouvea, CP; Archanjo, BS; Trommer, RM; Oliveira, FJ; Silva, RF; Achete, CA
2015, JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS, 49, 175-185.

Diels-Alder functionalized carbon nanotubes for bone tissue engineering: in vitro/in vivo biocompatibility and biodegradability

Mata, D; Amaral, M; Fernandes, AJS; Colaco, B; Gama, A; Paiva, MC; Gomes, PS; Silva, RF; Fernandes, MH
2015, NANOSCALE, 7, 20, 9238-9251.

A DLC/diamond bilayer approach for reducing the initial friction towards a high bearing capacity

Amaral, M; Carreira, DJ; Fernandes, AJS; Abreu, CS; Oliveira, FJ; Gomes, JR; Silva, RF
2012, WEAR, 290, 18-24.

The role of surface activation prior to seeding on CVD diamond adhesion

Amaral, M; Almeida, F; Fernandes, AJS; Costa, FM; Oliveira, FJ; Silva, RF
2010, SURFACE & COATINGS TECHNOLOGY, 204, 21-22, 3585-3591.

Patents

Silicon nitride sealing rings with diamond coating

Products InternationalNational

Silva, Rui; Fernandes, António; Amaral, Margarida ; Almeida, Flávia; Oliveira, Filipe ; Costa, Florinda; Carrapichano, João

The present invention refers to a dynamic mechanical sealing system comprising rings manufactured by means of coating silicon nitride ceramic pieces (Si3N4) with diamond films obtained by Chemical Vapour Deposition (CVD). The said mechanical elements should simultaneously warrant low friction, wear-resistance and good sealant properties...

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