Maria Alexandra Lopes da Fonseca

MAIN RESEARCH INTERESTS

– Reinforcement of polymeric matrixes with carbon like nanoparticles;
– Shape memory polymeric nanocomposites for active control;
– Study of nanofluids for their suitability in heat transfer.

EDUCATION

  • PhD in Plysics. Thesis title “Study of defects in quantum structures of silicon and germanium”. University of Aveiro, Portugal (May 2007);
  • Degree in Physics Engineering (pre-bologna), University of Aveiro, Portugal (September 2001).

ACADEMIC EXPERIENCE

  • Since 2012, 1st January, Post-doctoral grant (from FCT: SFRH/BPD/81791/2011), Title “Enhanced shape memory polymers for active control”, Department of Mechanical engineering, University of Aveiro, Portugal.
  • Post-doctoral grant, project “Numerical and physical modeling toward enhancement of industrial processes”, UI, Department of Mechanical Engineering, University of Aveiro, Portugal, from 1/08/2011 to 31/12/2011.
  • Post-doctoral grant, project “Cadflow –optimization and commercialization of hardware and software, Lda: study and characterization of new composite materials for biomedic applications”, Department of Mechanical Engineering, University of Aveiro, Portugal, from 1/11/2010 to 31/05/2011.
  • Post-doctoral grant, project “QuickQuote”, Department of Mechanical Engineering, University of de Aveiro, Portugal, from 1/07/2010 to 31/10/2010.
  • Post-doctoral grant (from FCT: SFRH/BPD/34838/2007), title “Ultra-high molecular weight polyethylene reinforced with carbon nanotubes (CNT/UHMWPE) for enhanced orthopedic implants”, Department of Mechanical Engineering, University of Aveiro, Portugal, from 1/07/2007 to 30/06/2010.
  • Investigation grants

Project POCI/EME/56040/2004 – “Processamento por fusão de polietileno de alta densidade reforçado por nanotubos de carbono para implantes ortopédicos”, Department of Mechanical Engineering, University of Aveiro, Portugal.

Project “Detectores de partículas e de perfís de feixes baseados no a-SiC-H (MSIC.2)”, Physics Department, Technological and Nuclear Institute (ITN), Sacavém, Lisbon, Portugal.

“Optical and structural characterization of Ge quantum structures” , Physics Department, Technological and Nuclear Institute (ITN), Sacavém, Lisbon, Portugal.

Project “SiGe/Si Heterojunctions grown on virtual substrates – strain relaxation and self-diffusion – GESICA”, Physics Department, Technological and Nuclear Institute (ITN), Sacavém, Lisbon, Portugal.

“Study of defects on silicon and germanium quantum structures”, Physics Department, University of Aveiro, Portugal.

RESEARCH PROJECTS

Colaboração no projecto: “Elaboration et caractérisation de nouveaux matériaux issus  de la farine bois pour des applications industrielles”, com o departamento de física da universidade de Aveiro e a Universidade de Benni Medal, Marrocos, no âmbito de projectos Bilaterais Portugal-Marrocos (FCT-CNRST).

PTDC/EME-MFE/119572/2010, Towards the understanding of nanofluid multi-physics and its applications, start: 01/09/2011, finish: 31/08/2014, investigator (25%).

PTDC/EME-TME/104178/2008, RapidPRE-Rapid prototyping by reactive extrusion: a new concept for rapid manufacturing, start: 01/04/2010, finish: 31/03/2013, investigator (20%).

RECENT PUBLICATIONS

Book chapters

Ultra High Molecular Weight Polyethyleneand its Reinforcement with CarbonNanotubes in Medical Devices, R.M. Guedes, Kanagaraj, P.S.R. Sreekanth, Monica Oliveira, M. Fonseca (2015), Scrivener Publishing LLC.

Carbon Nanotubes in a Fluidic Medium: Critical Analysis, Physical and Chemical Properties of Carbon Nanotubes, Dr. Satoru Suzuki (Ed.), Maria Alexandra Fonseca, Sylvio Freitas, Bruno Lamas, Bruno Abreu, Hugo Calisto, Nelson Martins and Mónica Oliveira (2013), ISBN: 978-953-51-1002-6, InTech, DOI: 10.5772/51965. Available from: http://www.intechopen.com/books/physical-and-chemical-properties-of-carbon-nanotubes/carbon-nanotubes-in-a-fluidic-medium-critical-analysis.

Microinjection of enhanced thermoplastics, Mónica Oliveira, Victor Neto, Maria Fonseca, Tatiana Zhiltsova and José Grácio, Book Chapter of the book “Thermoplastics – Book 1”, ISBN: 979-953-307-353, InTech, DOI: 10.5772/35680.

Carbon Nanotubes – interactions with biological systems, Joana Reis, Fernando Capela-Silva, José Potes, Alexandra Fonseca, Mónica Oliveira, Subramani Kanagaraj and António Torres Marques, Book Chapter of the book “Carbon nanotubes -Book 1”, InTech, DOI: 10.5772/16651., ISBN: 978-953-307-566-2.

Articles in International Journals

On the assessment of viscosity variability by nanofluid engineering: A Review, Bruno Abreu, André Válega, Bruno Lamas, A. Fonseca, N. Martins, M.S.A. Oliveira, Journal of nanofluids , May 2015 (submitted).

Electrical conductivity of Multiwalled Carbon Nanotubes/Polyester polymer nanocomposites determined by impedance spectroscopy, K. Abazine, H. Anakiou, M. El Hasnaoui, M. P. F. Graça, M. A. Fonseca, L. C. Costa, M. E. Achour, A. Oueriagli, Spectroscopy Letters, October 2014 (submitted).

Nanotechnology – towards real improvements in the energy efficiency of bluidings, Bruno Lamas, Bruno Abreu, Alexandra Fonseca, Nelson Martins and Mónica Oliveira, Nano Magazine, issue 28, February 2014, pp 37.

Critical analysis of the thermal conductivity models for CNT based nanofluids, Bruno Lamas, Bruno Abreu, Alexandra Fonseca, Nelson Martins and Mónica Oliveira, International Journal of Thermal Sciences, 78 (2014) 65-76.

The effect of carbon nanotubes on viscoelastic behaviour of biomedical grade ultra-high molecular weight polyethylene, Rui Miranda Guedes, Celeste M.C. Pereira, Alexandra Fonseca, Mónica S.A. Oliveira, Composite Structures 105 (2013) 263–268.

Transport and Thermal Properties of Quaternary Phosphonium Ionic Liquids and IoNanofluids, A. G. M. Ferreira, P. N. Simões, A. F. Ferreira, M. A. Fonseca, M. S. A. Oliveira and A. Trino. J Chemical Thermodynamics, 64 (2013) 80-92.

Long term MWCNTs nanofluids towards heat transfer capability improvement, Bruno Lamas, Bruno Abreu, Alexandra Fonseca, Nelson Martins and Mónica Oliveira, The Journal of Physical Chemistry, 117 (2013) 12826-12834.

Shape memory polyurethanes reinforced with carbon nanotubes, M.A. Fonseca, B. Abreu, F.A.M.M. Gonçalves, A.G.M. Ferreiras, R.A.S. Moreira and M.S.A. Oliveira, Composite Structures, vol. 99 (2013) 105-111.

Numerical analysis of percolation formation in carbon nanotube based nanofluids, Bruno Lamas, Bruno Abreu, Alexandra Fonseca, Nelson Martins and Mónica Oliveira, International Journal for Numerical Methods in Engineering, 95 (2013) 257-270

Assessing colloidal stability of long term MWCNT based nanofluids, Bruno Lamas, Bruno Abreu, Alexandra Fonseca, Nelson Martins and Mónica Oliveira, Journal of Colloid and Interface Science 381 (2012) 17-23.

Experimental characterization of convective heat transfer with MWCNT nanofluids under laminar flow conditions, Bruno Abreu; Bruno Lamas; A. Fonseca; N. Martins; M.S.A. Oliveira, Heat and Mass Transfer, 2013 .

The use of Taguchi technique to optimize the compression moulding cycle to process acetabular cup components, A. Fonseca, N. Inácio, S. Kanagaraj, MSA Oliveira anda JAO Simões, Journal of Nanoscience and Nanotechnology, vol. 11, nº 6 (2011) pp 5334-5339.

EG/CNTs nanofluids engineering and thermal characterization, B.C. Lamas, M.A.L. Fonseca, F.A.M.M. Gonçalves, A.G.M. Ferreira, I.M.A. Fonseca, S. Kanagaraj, N. Martins and M.S.A. Oliveira, Journal of Nano Research 13 (2011), pp 69-74.

Enhanced UHMWPE reinforced with MWCNT through mechanical ball-milling, A. Fonseca, S. Kanagaraj, M.S.A. Oliveira and J.A.O. Simões, Defect and Diffusion Forum vols. 312-314 (2011) pp 1238-1243.

Thermo-mechanical behaviour of ultrahigh molecular weight polyethylene-carbon nanotubes composites under different cooling techniques, S. Kanagaraj, A. Fonseca, RM Guedes, M.S.A. Oliveira and J.A.O. Simões, Defect and Diffusion Forum vols. 312-314 (2011) pp 331-340.

Nano-indentation studies on ultrahigh molecular weight polyethylene/carbon nanotubes nanocomposites, A. Fonseca, MSA Oliveira, J. Grácio and JAO Simões, Proceedings of PMI2010.

Tribological characterization of carbon nanotubes/ultrahigh molecular weight polyethylene composites: the effect of sliding distance, Kanagaraj S, Mathew MT, Fonseca A, Rocha LA, Oliveira MSA, Simões JAO, International Journal of Surface Science and Engineering 4 (2010) 305.

In vitro studies on multiwalled carbon nanotubes/ultrahigh molecular weight polyethylene nanocomposites, J. Reis, S. Kanagaraj, A. Fonseca, F. Capela da Silva, J. Potes, A. Pereira, M.S.A. Oliveira and J.O. Simões, Brazilian Journal of Medical and Biological Research 43 (2010) 476.

Nanocompósitos para aplicações biomédicas, A. Fonseca, S. Kanagaraj, MSA Oliveira and JAO Simões, O Molde, nº81 (2009) pp. 31 (invited paper).

Ensaios mecânicos em UHMWPE reforçado com CNTs para aplicações biomédicas, A. Fonseca, S. Kanagaraj, MSA Oliveira e JAO Simões, Actas do “3º Congresso Nacional de Biomecânica” (2009) pp 645.

Optimization of compressed moulded UHMWPE/CNT composites for medical applications, A. Fonseca, S. Kanagaraj, MSA Oliveira and JAO Simões, Actas da conferência RPD 2008.

Rheological study of nanofluids at different concentration of carbon nanotubes, Kanagaraj S., Ponmozhi J, Varanda FR, Silva JAL, Fonseca A, Oliveira MSA and Simões JAO, Proceedings of 19th National & 8th ISHMT-ASME, paper nº NFF-7, pp1-6, 2008.

Tribological studies on high density polyethylene/carbon nanotubes composites, Kanagaraj S, Mathew MT, A. Fonseca, Rocha LA, Oliveira MSA and Simões JAO, Tribology society of India 2008.

MBE growth of vertically ordered Ge quantum dots on Si, A.I. Nikiforov, V.V. Ulyanov, S.A. Teys, A.K. Gutakivsky, O.P. Pchelyakov, A.I. Yakimov, A. Fonseca, J.P. Leitão and N.A. Sobolev, Physica statys solidi (c) 4 (2007) 262.

Optical and structural analysis of Ge/Si quantum dots grown on a Si(001) surface covered with a SiO2 sub-nanolayer, A. Fonseca, E. Alves, J.P. Leitão, N.A. Sobolev, M.C. Carmo and A. Nikiforov, International Journal of Nanoscience (IJN), vol 6, Issue 3/4 (2007), pp. 245-24.

Influence of defects on the optical and structural properties of Ge dots embedded in an Si/Ge superlattice, A. Fonseca, N.A. Sobolev, J.P. Leitão, E. Alves, M.C. Carmo, N.D. Zhkharov, P. Werner, A.A. Tonkikh and G.E. Cirlin, Journal of Luminescence 121 (2006) 417-420.

RBS/Channeling study of buried Ge quantum dots grown in a Si layer, A. Fonseca, E. Alves, N.P. Barradas, J.P. Leitão, N.A. Sobolev, M.C. Carmo, A.I. Nikiforov and H. Presting, Nuclear Instruments and Methods B 249 (2006) 462-465.

Optical and structural study of Ge/Si quantum dots on Si(100) surface covered with a thin silicon oxide layer, A. Fonseca, E. Alves, J.P. Leitão, N.A. Sobolev, M.C. Carmo and A.I. Nikiforov, Materials Science and Engineering B 124-125 (2005) 462.

Damage behavior of GaAs/AlAs multilayer structures, S. Magalhães, A. Fonseca, N. Franco, N. Barradas, N. Sobolev, R. Hey, H. Gragn and E. Alves, Nuclear Instruments and Methods B 249 (2006) 890-893.

Optical and structural analysis of Ge/Si quantum dots gown on a Si(001) surface covered with a SiO2 sub-monolayer, A. Fonseca, E. Alves, J.P. Leitão, N.A. Sobole and M.C. Carmo, International Journal of Nanoscience 6 (2007) 245.

Ion beam analysis of Ge/Si dots grown on ultrathin SiO2 interlayer, A. Fonseca, E. Alves, J.P. Leitão, N.A. Sobolev, M.C. Carmo and A.I Nikiforov, Materials Science Forum 514-516 (2006) 1121.

Beyond single scattering off flat samples, N.P. Barradas, A. Fonseca, N. Franco and E. Alves, Nuclear Instruments and Methods B 241 (2005) 316-320.

High resolution backscattering studies of nanostructurated magnetic and semiconducting materials, A. Fonseca, N. Franco, E. Alves, N.P. Barradas, J.P. Leitão, N.A. Sobolev, D.F. Banhart, H. Presting, V.V Ulyanov and A.I. Nikiforov, Nuclear Instruments and Methods B 241 (2005) 454-458.

Rutherford backscattering and X-ray reflectivity analysis of tunnel barriers, N. Franco, I.V. Yavorovskiy, A. Fonseca, J.A.A. Gouveia, C. Marques, E. Alves, R.A. Ferreira, P.P. Freitas and N.P. Barradas, Nuclear Instruments and Methods B 240 (2005) 254-370.

Low-temperature molecular beam epitaxy of Ge on Si, J.P. Leitão, A. Fonseca, N.A. Sobolev, M.C. Carmo, N. Franco, A.D. Sequeira, T.M. Burbaev, V.A. Kurbatov, M.M. Rzaev, A.O. Pogosov, N.N. Sibeldin, V.A. Tsvetkov, H. Lichtenberger and F. Schaffler, Materials Science in Semiconductor Processing 8 (2005) 35-39.

Structural characterization and luminescence of Ge/Si quantum dots, A. Fonseca, N. Sobolev, J.P. Leitão, M.C. Carmo, N. Franco, H. Presting and A.D. Sequeira, Materials Science Forum 455 (2004) 540.

Pulsed laser annealing of Si/Ge superlattices, N.A. Sobolev, G.D. Ivlev, E.I. Gatskevich, A.B. Lopes, A. Fonseca, J.P. Leitão, M.C.Carmo, D.N. Sharaev, H. Presting and U Konig, Materials Science and Engineering C 23 (2003) 19-22.

Influence of defects on the luminescence of Ge/Si Quantum dots, N.A. Sobolev, A. Fonseca, J.P. Leitão, M.C. Carmo, H. Presting and U. Konig, Physica status solidi (c) 0 (2003) 1267-1270.

Conferences

Utilização de redes de Bragg em fibras óticas para caracterização da memória de forma de poliuretanos reforçados com nanotubos de carbonoAlexandra Fonseca, N. Alberto, B. Silva, V.F. Neto, R. Nogueira, M.S.A. Oliveira, R.A.S. Moreira CNME2014, Universidade de Aveiro, Aveiro, 15-17 Outubro 2014.

Breaching CNT nanofluids thermal conductivity modelling uncertainties, Lamas, B. Abreu, A. Fonseca, N. Martins and M. Oliveira THERMAM 2014,  Boyalik Beach Hotel, Cesme – Izmir, Turkey, 12-15 June 2014.

 A dielectric characterization of conducting polyurethanes reinforced with carbon nanotubes for active control applications, A. Fonseca, B. Silva, B. Lamas, L.C. Costa, M.P. Graça, R.A.S. Moreira and M.S.A. Oliveira, Euro Intelligent Materials, Kiel, Germany, 25-27 September 2013.

Nanotecnologia e Alotropos de Carbono – O que é? Para que serve?, Investigação@UA – Polímeros e fluidos melhorados com nanotubos de carbono ,M.A. Fonseca.

Workshop: Nanotecnologia e Indústria, Departamento de Engenharia Mecânica, Universidade de Aveiro, Portugal, 19 october 2012

Shape memory polyurethanes reinforced with carbon nanotubes: synthesis and characterization, M.A. Fonseca, B. Abreu, F.A.M.M. Gonçalves, A.G.M. Ferreira, R.A.S. Moreira and M.S.A. Oliveira, International conference on mechanics of nano, micro and macro composites structures, Torino, Italy, 18-20 June 2012.

Nanoindentation studies on ultrahigh molecular weight polyethylene/carbon nanotubes nanocomposites, A. Fonseca, M.S.A. Oliveira, J. Grácio and J.A.O. Simões, 4th International Conference PMI, Ghent, Belgium, 15-17 September 2010.

UHMWPE reinforced with CNTs – a new and enhanced material for biomedical applications, A. Fonseca, N. Inácio, S. Kanagaraj, MAS Oliveira anda JAO Simões, 3rd International Meeting on Developments in Materials, Processes and Applications of Emerging Technologies” 21-23 July 2009, Manchester, United Kingdom.

 Ensaios mecânicos em UHMWPE reforçado com CNTs para aplicações biomédicas, A. Fonseca, S. Kanagaraj, MSA Oliveira and JAO Simões, 3º Congresso Nacional de Biomecânica”, 11-12 February 2009, Bragança, Portugal.

Optimization of compression moulding cycle to process CNT/UHMWPE composites for medical applications, A. Fonseca, S. Kanagaraj, MSA Oliveira and JAO Simões, RPD2008, 27-31 October 2008, Oliveira de Azeméis, Portugal.

Structural and optical characterization of Ge quantum dots, A. Fonseca, ITN, Sacavém, Portugal.

 Fotoluminescência de Quantum-Dots de Si-Ge, J.P. Leitão, N.A. Sobolev, M.C. Carmo, M.A. Fonseca, H. Presting and U. Konig, “Física 2002”, September 2002, Évora, Portugal.

Achieving enhanced materials through the addition of functionalized nanoparticlesMaria Alexandra Fonseca, Bruno Lamas, Bruno Silva, Rui Moreira, Nelson Martins and Mónica Oliveira, Research Day 2014, 3 June 2014, Universiy of Aveiro, Portugal

 u-injection molding of enhanced thermoplastics, Victor Neto, Maria Fonseca, Tatiana Zhiltsova, Rui Moreira, José Simões, Jorge Ferreira, Mónica Oliveira and José Grácio, Research Day 2012, 13 June 2012, Universiy of Aveiro, Portugal.

New shape memory polyurethanes reinforced with carbon nanotubesFonseca, A., Moreira, R.A.S., Zhil’tsova, T., Oliveira, M.S.A., Simões, J.A.O., Gonçalves, F.A.M.M. and Ferreira, A.G.M., “VI International Materials Symposium MATERIAIS2011, XV meeting of SPM – Sociedade Portuguesa de Materiais”, 18-10 April 2011, Guimarães, Portugal.

Enhancement of the mechanical properties of UHMEPR with CNTs for total hip replacementsFonseca, A., Kanagaraj, S., Oliveira, MSA and Simões, JAO, “2nd International Conference on Advanced Nano Materials”, 22-25 June 2008, Aveiro, Portugal.

Mechanical properties of ultrahigh molecular weight polyethylene – multiwalled carbon nanotubes nanocomposites for orthopaedic applications, Kanagaraj, S., Fonseca, A., Mónica SA Oliveira and José AO Simões, 8th World Biomaterials Congress”, 28 Maio – 1 June 2008, Amsterdam, The Netherland.

Rheological study of nanofluids at different concentration of carbon nanotubes, Kanagaraj S., Varanda FR, Silva JAL, Fonseca A, Oliveira MSA and Simões JAO, 19th National & 8thISHMT-ASME heat and mass transfer conference”, 3-5 Janeiro 2008, Hyderabad, India.

Dynamic mechanical of UHMWPE-MWCNT composites, Kanagaraj S, Guedes RM, Fonseca A, Mónica SA Oliveira and José AO Simões, International conference on surfaces, coating and nanostructured materials (NanoSmat), 9-11 July 2007, Algarve, Portugal.

Studies on volumetric wear rate of multi walled carbon nanotubes/high density polyethylene composites, Kanagaraj S., Mathew MT, Fonseca A, Rocha LA, Oliveira MSA and Simões JAO Materiais 2007”, 1-4 April 2007, University of Porto, Porto, Portugal.

Influence of radiation defects on structural properties of Ge/Si islands, A. Fonseca, E. Alves, N. Franco, J.P. Leitão, N.A. Sobolev and M.C. Carmo, ISSCN’07, 25-27 January 2007, Aveiro, Portugal.

Ilhas de Ge crescidas segundo o modo de crescimento de Volmer-Weber, A. Fonseca, E. Alves, J.P. Leitão, N.A. Sobolev, M.C. Carmo and A.I. Nikiforov, Física 2006, 4-7 September 2006, Aveiro, Portugal.

Efeito da irradiação em ilhas de Ge crescidas em Si(100), A. Fonseca, E. Alves, J.P. Leitão, N.A. Sobolev, M.C. Carmo, H. Presting and E.G. Cirlin, Física 2006, 4-7 September 2006, Aveiro, Portugal.

Influence of defects on the optical and structural properties of Ge dots embedded in a Si/Ge superlattice, A. Fonseca, N.A. Sobolev, J.P. Leitão, E. Alves, M.C. Carmo, N.D. Zakhanov, P. Werner, A.A. Tonkikh and G.E. Cirlin, E-MRS 2006”, 29 May – 2 June 2006, Nice, France.

Enhancement of the radiation hardness of Ge quantum dots by embedding in SiGe superlattices, N.A. Sobolev, A. Fonseca, J.P. Leitão, E. Alves, M.C. Carmo, N. Zakharov, P. Werner, A.A. Tonkikh and G.E. Cirlin, QD2006, 1-5 May 2006, Chamonix-Mont Blanc, France.

Structural and optical study of Ge islands grown on Si(001) through Volmer-Weber growth mode, A. Fonseca, E. Alves, N.P. Barradas, J.P. Leitão, N.A. Sobolev, M.C. Carmo and A.I. Nikiforov, QD2006”, 1-5 May 2006, Chamonix-Mont Blanc, France.

Photoluminescence and Rutherford backscattering study of Ge quantum dots grown on (100) surface covered with a thin silicon oxide layer, A. Fonseca, N.A. Sobolev, J.P. Leitão, E. Alves, M.C. Carmo and A.I. Nikiforiv, Proc. Internat. Conf. Topical problems of solid state physics, 26-28 October 2005, Minsk, Belarus.

Structural and optical characterization of Ge quantum dots, A. Fonseca, E. Alves, N.P. Barradas, J.P. Leitão, N.A. Sobolev, M.C. Carmo and A.I Nikigorov, 2nd ASPECT Workshop on advanced spectroscopy”, 29 September – 2 October 2005, Kazimierz Dolny, Poland.

RBS/Channeling study of burried Ge quantum dots grown in a Si layer, A. Fonseca, E. Alves, N.P. Barradas, J.P Leitão, N.A. Sobolev, M.C. Carmo, A.I. Nikiforov and H. Presting, IBA2005”, 26 June – 1 July 2005, Seville, Spain.

Damage behaviour of GaAs/AlAs multilayer structures, Magalhães, A. Fonseca, N. Franco, N. Barradas, N. Sobolev, R. Hey, H. Grahn and E. Alves, IBA 2005”, 26 June – 1 July 2005, Seville, Spain

 Optical and structural analysis of Ge/Si quantum dots grown on a Si(001) surface covered with a SiO2 sub-monolayer, A. Fonseca, E. Alves, J.P. Leitão, N.A. Sobolev, M.C. Carmo and A Nikiforov, 13th Int Symp. Nanostructures: physics and technology”, 20-25 June 2005, St Petersburg, Russia.

Structural and optical study of Ge/Si quantum dots on Si (001) surface covered with a thin silicon oxide layer, A. Fonseca, E. Alves, J.P. Leitão, N.A. Sobolev, M.C. Carmo and A.I. Nikiforov, E-MRS 2005”, 31 May – 3 June 2005, Strasbourg, France.

Ion beam analysis of Ge/Si dots grown on ultrathin SiO2 interlayers, A. Fonseca, E. Alves, J.P. Leitão, N.A. Sobolev, M.C. Carmo and A.I. Nikiforov, Materiais 2005”, 20-23 March 2005, Aveiro, Portugal.

Rutherford backscattering and X-ray reflectivity analysis of tunnel juctions, Franco, I.V. Yavorovski, A. Fonseca, J.A. Gouveia, C. Marques, E. Alves, R. Freitas, P.P. Freitas and N.P. Barradas, ECAART-8, 20-24 September 2004, Paris, France

Beyond single scattering off flat samples, N.P. Barradas, A. Fonseca, N. Franco and E. Alves, CAARI 2004, 10-15 October 2004, USA.

High resolution backscattering studies of nanostructurated magnetic and semiconducting material, A.Fonseca, N. Franco, E. Alves, N.P. Barradas, J.P. Leitão, N.A. Sobolev, D.F. Bahnart, H. Presting, V.V. Ulyanov and A.I. Nikiforov, CAARI 2004, 10-15 October 2004, USA.

Low temperature molecular beam epitaxy of Ge on Si, J.P. Leitão, A. Fonseca, N.A. Sobolev, M.C. Carmo, N. Franco, A.D. Sequeira, T.M. Burbaev, V.A. Kurbatov, M.M. Rzaev, A.O. Pogosov, N.N. Sibeldin, V.A. Tsvetkiv, H. Kichenberger and F. Schaffler, ISTDM 2004, 16-19 May 2004, Frankfurt (Oder), Germany.

Luminescence and structural properties of InGaAs/GaAs quantum dots grown on Si/SiGe structures, N.A. Sobolev, A. Cavaco, J.P. Leitão, M.C. Carmo, A. Fonseca, N. Franco, A. Sequeira, I.P. Kazakiv, T.M. Burdaev, V.A. Kurbatov, M.M. Rzaev and V.I. Vdovin, QD 2004, 10-13 May 2004, Banff, Alberta.

Self-organization phenomena in pulsed laser annealed Si/Ge superlattices, N.A. Sobolev, G.D. Ivlev, E.I. Gatskevich, D.N. Sharaev, J.P. Leitão, A. Fonseca, M.C. Carmo, A.B. Lopes, V.V. Shvartsman, A.L. Khlkin, H. Kihhel and H. Presting, Nanomeeting 2003, Minsk, Belarus.

Luminescence of Ge/Si quantum dots subjected to radiation damage and hydrogen passivation, N.A. Sobolev, A. Fonseca, J.P. Leitão, M.C. Carmo, H. Presting and H. Kibbel, Nanomeeting 2003, Minsk, Belarus.

Structural characterization and luminescence of Ge/Si quantum dots, A. Fonseca, N. Sobolev, J.P. Leitão, M.C. Carmo, N. Franco, H. Presting and A.D. Sequeira, Materiais 2003, Lisbon, Portugal.

Influence of defects on the luminescence of Si/Ge quantum dos, N.A. Sobolev, A. Fonseca, J.P. Leitão, M.C. Carmo, H. Presting anf U. Konig, QD 2002, Tokyo, Japan.

Estudo do recozimento de super-redes de Si5Ge5 com laser pulsado, N.A. Sobolev, G.D. Ivlev, E.I. Gatskevich, A.B. Lopes, A. Fonseca, J.P. Leitão, M.C. Carmo, D.N. Sharaev, H. Presting and U. Konig, Física 2002, Évora, Portugal.

Pulsed laser annealing of Si/Ge superlattices, N.A. Sobolev, G.D. Ivlev, E.I. Gatskevich, A.B. Lopes, A. Fonseca, J.P. Leitão, M.C. Carmo, D.N. Sharaev, H. Presting and U. Konig, E-MRS 2002, Strasbourg, France.

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