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Περιγραφή Μονάδας

0305201017303052010171The Laboratory Unit of Nanoengineering & Nanotechnology (NanoLab) is situated at the School of Chemical Engineering (Department of Materials Science and Engineering) of National Technical University of Athens (NTUA). It was established in 2006 and the research group mostly focuses on the study and analysis (mathematical modeling) of the nanomechanical properties of materials (soft matter, metals, ceramics, polymers, thin films and coatings). The group is also working on the synthesis and characterization of nanostructures, nanostructures degradation and drug absorption delivered by nanoparticles and the mathematical modeling of cancer invasion. NanoLab research activity aims to interact with Academia, Research Institutes and Organizations and Industry, produce new materials and knowledge, and transfer its technology to scientific and industrial users, through National and European funding projects. Moreover, the group provides excellent care of under - graduated and post - graduate students.

Nanotechnology is a multidisciplinary science. This is reflected by the variety of research groups interested in nanoengineering and nanotechnology at NTUA. NTUA NanoLab has chosen the following prioritized research activities:

-          Nanomaterials processing (Synthesis and Deposition), Ceramic materials & powders, quantum dots, composite materials, metals, semi conducting, renewable materials, insulating-ceramic soft and polymeric materials, Synthesis and characterization of nanostructures (i.e. magnetic nanoparticles) for bioapplications (drug and siRNA delivery structures and differentiation agents of stems cells for tissue engineering), Multifunctional materials, Thin film Technology (CVD)

-          Structural and Nanomechanical Properties of bulk-thin film-multifunctional materials, Tribology, Contact Mechanics, Adhesion, Fracture and Fatigue of Engineering Materials, Microelectromechanical Systems (MEMS), Surface and interface properties, Surface Engineering.

Nanomechanical characterization of polymer/elastomer nanocomposites for bioapplications (prosthetics, tissues engineering) and nanostructures:

o   Development of proper experimental protocol for the measurement of   nanomechanical properties of soft materials and mathematical models (viscoelasticity/ time-dependent behavior).

o   Investigation of the interactions between the indenter tip and soft matter (electrostatic forces, hydrofilicity-hydrophobicity).

o   Effect of physical and artificial weathering on the nanomechanical properties of polymers.

-          Corrosion protection coatings and materials, Self-repairing and self-healing coatings and materials, Reliability study of welded structures: mechanical deterioration, thermal degradation, Reliability of metal thin films as candidate materials for sensing applications.

-          Mathematical modeling of tumour growth, lymphagiogenesis and cancer cell invasion of tissue, Mathematical modeling of nanodrug delivery, Mathematical modeling of tissue engineering.

-          Social & safety implications of nanotechnology, forecasting, technological assessment, sustainability studies in nanotechnology.

-          Life cycle analysis, risk assessment, ethical issues in Nanotechnology, end-of-life strategy in nanomaterials.

Recent research interests:

-    Carbon nanotubes: synthesis and characterization.

-    Synthesis, characterization and application of multifunctional coatings for corrosion and antibacterial protection of metal alloys.

-    Self-healing and self-repairing coatings and structures through inspection and mechanical behavior.

-    Synthesis and characterization of multi-responsive and multi-triggering nanocontainers.

-    Studies on loading process and release mechanism of loaded nanocontainers with corrosion inhibitors and self-repairing agents.

-    Estimation of corrosion properties of coatings and polymers via electrochemical techniques.

-    Functionally graded materials; synthesis and characterization.

-    Multiscale consideration of plasticity and stress-strain curves.

-    Mathematical simulation of tensile and indentation experiments.

-    Multiscale Mathematical Modeling of Tumor Growth, Cancer Invasion and Nanodrug delivery.

Training and educational activity at the NanoLab includes:

·      Carrying out work for a Thesis (under-graduate, post-graduate or Doctoral degree)

·      Courses and seminars on various subjects in the areas of mechanics, mathematical modeling, synthesis and characterization of nanostructures and thin film technology.


Facilities:

  1. Nanoindentation – SPM Testing

Nanoindentation testing is performed with a nanomechanical test instrument, which allows the application of loads from 1 to 30,000 μN and records the displacement as a function of applied loads with a high load resolution (1 nN) and a high displacement resolution (0.04nm). The nanomechanical test instrument employed in this study is equipped with a Scanning Probe Microscope (SPM), in which a sharp probe tip moves in a raster scan pattern across a sample surface using a three-axis piezo positioned (clean area environment with 45% humidity and 23°C ambient temperature through proper air-managing instrument). In order to operate under closed loop load or displacement control, feedback control option is used. In nanoindentation measurements, various types of tips are used (standard three-sided pyramidal Berkovich probe, Vickes, spherical, conospherical, fluid tip etc.). Nanotribological studies are also performed.

Fig.1 . Load vs displacement as the tip approaches the surface and snaps into contact because of surface forces and types of scratches.

  1. Thermal Chemical Vapor Deposition (Thermal CVD) (synthesis of CNT, SiC)

-SiC production

-Growth of CNTs and nanographite is obtained by CVD of a gas mixture evaporated from catalyst powder and a solid carbon source. Deposition was carried out at different temperatures on crystalline silicon substrates.

DSCN2841

Fig. 2. Sketch of the thermal-CVD reactor system.

The CVD reactor (Fig. 1) consists of a horizontal quartz tube (100 cm long, 4.2 cm in diameter) housed in a cylindrical furnace 60 cm long. Inside the tube, a constant nitrogen gas flow of approximately 420 ml/min is maintained at pressures slightly above the atmospheric pressure, in order to provide the condition for a laminar gas flow. A pyrex flask containing the reagent mixture is connected, via a T-joint, to the tube close to the nitrogen inlet. A heater plate is located below the flask.

Personnel

1

Associate Professor, PhD, C. Charitidis

Dr. C.A. Charitidis is Associate Professor at the School of Chemical Engineering of NTUA (Director of Department of Materials Science and Engineering), with extensive R&D experience through collaborations with international research centres. He is a referee in International scientific journals, evaluator & scientific advisor of R&D projects, participant in European and National funded R&D projects. His research activity is complemented by about 150 papers in International Journals (100 ISI) and Conferences, a large number of lectures as an invited speaker and over 1200 citations by other researchers. He is a referee in International scientific journals, evaluator & scientific advisor of R&D projects, participant in European and National funded R&D projects. He is consultant in a number of EU & Hellenic Companies & SMEs in emerging technologies (both novel materials and processing), Evaluator/Expert-Reviewer/Raporteur in: European Commission-EC (FP7-Large scale projects, Research for SMEs, FP6-Integrated Projects & CRAFT, FP5), EC Ethical Reviews at proposals on Nanotechnology in FP6 & FP7, National Science Foundation-NSF (USA), European Science Foundation-ESF, General Secretariat for Research & Technology, Greek Ministry of Development, Research Promotion Foundation (RPF), Government of the Republic of Cyprus.

2

Lecturer, PhD, A. Karantonis

Dr. Antonis Karantonis graduated from the Department of Chemistry at Aristotle University of Thessaloniki in 1991 and he received his PhD from the same Department in 1996. He joint NTUA in 2009 as a lecturer of the School of Chemical Engineering after spending five years in Japan as a post-doctoral fellow and research assistant and six years in the Ministry of Development - Department of Industry. His published scientific work is related to non-linear electrochemical systems, corrosion and passivation of metals, electrocatalysis and interfacial electrochemistry. He has published 42 research papers and participated in 60 scientific conferences. He participated in numerous national and European research projects both in Japan and Greece and he is a reviewer in several scientific journals in the field of physical chemistry and electrochemistry. He is a member of the International Society of Electrochemistry and the Association of Greek Chemists.

3

PhD, MSc Ioannis Kartsonakis,

Synthesis & Characterization of Nanocontainers for a wide range of technological applications and coatings based on synthetic polymers for self-healing surfaces

4

PhD, MSc George Lolas, Mathematician

Mathematical simulation of Nanocarriers and Nanodrugs

5

MSc A. Skarmoutsou, Chemical Engineer

Synthesis of nanostructures and investigation of their properties for bioengineering applications

 

6

MSc E. Koumoulos, Chemical Engineer

Synthesis & study of coatings’ mechanical properties, based on nanopowders

 

7

V. Tsikourkitoudi, Chemical Engineer

Synthesis and characterization of metallic/ceramic thin films through Chemical Vapour Deposition technique

 

8

D. Dragatogiannis, Applied Mathematician

Mathematical Modeling and Simulation of Mechanical properties of materials

 

9

Dr, MSc D. Koumoulis, Chemical Engineer

Nuclear Magnetic Resonance Spectroscopic study of transition metal oxides with endogenous nanophase areas

 

10

MSc A. Chatzipavlidis, Physist

Synthesis and investigation of nanocontainers’ properties for medical applications

 

11

E. Margaritis,  Mechanical Engineer specialized in industrial production management

Technology transfer mechanisms of research results & state-of-the-art technologies development from Laboratory to the Market-Industry

 

12

PhD, MSc P. Kavouras, Physicist

Scale effects on the mechanical properties of advanced composite materials

 

13

PhD, Τakis Vidalis, Lawyer

Ethics in Nanosciences & Nanotechnologies

 

Recent Publications

1.      Evaluating the robustness of top coatings comprising plasma-deposited fluorocarbons in electrowetting systems, D.P. Papageorgiou, E.P. Koumoulos, C.A. Charitidis, A.G. Boudouvis and A.G. Papathanasiou, Accepted for publication in: Journal of Adhesion Science and Technology (2011)

2.      Nanomechanical Properties of Friction Stir Welded ΑΑ6082-T6 Aluminum Alloy, E.P. Koumoulos, C.A. Charitidis, N.M. Daniolos, D.I. Pantelis Accepted for publication in: Materials Science and Engineering B, doi:10.1016/j.mseb.2011.01.015

3.      Nanomechanical Properties and Nanoscale Deformation of PDMS nanocomposites, C.A. Charitidis, E.P. Koumoulos, Accepted for publication in: Plastics, Rubber and Composites: Macromolecular Engineering (2011)

4.      Local mechanical properties and nanoscale deformation of aluminum and magnesium lightweight alloys, C.A. Charitidis, International Journal of Surface Science and Engineering, 5, 20-37 (2011)

5.      Influence of nano-inclusions’ grain boundaries on crack propagation modes in materials, T.E. Karakasidis, C.A. Charitidis, Materials Science and Engineering: B 176, 490-493 (2011)

6.      Adhesive forces and time dependent behaviour (creep and loading rate effects) on nanomechanical properties of polydimethylsiloxane (PDMS), C.A. Charitidis, E.P. Koumoulos, V.P. Tsikourkitoudi, S.P. Vasilakos, P.A. Tarantili, Journal of Nanostructured Polymers and Nanocomposites 7, 32-42 (2011).

7.      Nanoscale Deformation and Nanomechanical Properties of Polydimethylsiloxane (PDMS), C.A. Charitidis, Industrial & Engineering Chemistry Research (Special Issue in Honor of Anastasios Karabelas and Stavros Nychas) 50, 565-570 (2011)

8.      Mechanical behaviour of PDMS silicone elastomer after outdoor weathering in two different weathering locations, P.N. Eleni, M.K. Krokida, G.L. Polyzois, C.A. Charitidis, E.P. Koumoulos, V.P. Tsikourkitoudi, I. Ziomas, Polymer Degradation and Stability 96(4), 470-476 (2011).

9.      Influence of accelerated ageing on nanomechanical properties, creep behavior and adhesive forces of PDMS, C.A. Charitidis, E.P. Koumoulos, V.P. Tsikourkitoudi, D.A. Dragatogiannis, G. Lolas, Accepted for publication in: Plastics, Rubber and Composites (2011)

10.  Conditions of electrochemical resonance under potentiostatic control, A. Karantonis, D. Karaoulanis, Electrochimica Acta, 56:11, 2011, 4119-4125

11.  Static and dynamic phenomena during the electrodissolution of steel in aqueous NaCl solutions, A. Karantonis, Y. Marcheva, L.G. Ghivalos and N. Kouloumbi, Electrochemistry, 74 (2006) 744-751.

12.  Kinetic profile of adsorption and self-assembling of thiophene oligomers studied by optical second harmonic generation, E. Mishina, Q.-K. Yu, T. Tamura, H. Sakaguchi, A. Karantonis and S. Nakabayashi, Surf. Sci. 544 (2003) 269-276.

13.  Optical second harmonic generation during the electrocatalytic oxidation of formaldehyde on Pt(111): potentiostatic regime versus galvanostatic potential oscillations, E. Mishina, A. Karantonis, Q.-K. Yu and S. Nakabayashi, J. Phys. Chem. B 106 (2002) 10199-10204.

14.  Two-dimensional metal deposition at the liquid/liquid interface; potential and magnetohydrodynamic pattern transition, S. Nakabayashi, R. Aogaki, A. Karantonis, U. Iguchi, K. Ushida and M. Nawa, , J. Electroanal. Chem. 473 (1999) 54-58.

15.  Release studies of corrosion inhibitors from Cerium Titanium Oxide Nanocontainers, Evaggelos Mekeridis, Ioannis Kartsonakis, George  Pappas, George Kordas, Journal of Nanoparticle Research: (2011) 13: 541-554.

16.  Influence of the doping agent on the corrosion protection properties of polypyrrole grown on aluminium alloy 2024-T3, A.C. Balaskas, I.A. Kartsonakis, G.C. Kordas, A.M. Cabral, P.J. Morais, Progress in Organic Coatings: (2011) 71 [2] 181-187.

17.  Probing mechanical properties of thin film and ceramic materials in micro and nano scale using indentation techniques, C.A. Charitidis, Applied Surface Science 256, 7583-7590 (2010)     

18.  Electronic properties of binary and ternary, hard and refractory transition metal nitrides, L.E. Koutsokeras, N. Hastas, S. Kassavetis, O. Valassiades, S. Logothetidis, C. Charitidis, P. Patsalas, Surface and Coatings Technology 204, 2038-2041 (2010)

19.  Nanomechanical and Nanotribological properties of carbon based thin films: A Review, C.A. Charitidis,International Journal of Refractory Metals and Hard Materials (Special Issue: Tribology of Hard Coating) 28, 51–70 (2010)

20.  An investigation on the high stress sensitivity of fatigue life of rolled AZ31 magnesium alloy under constant amplitude fatigue loading, A.N. Chamos, C.A. Charitidis, A. Skarmoutsou, Sp.G. Pantelakis, Fat. Fract. Eng. Mater. Struct.-FFEMS 33, 252-265 (2010)

21.  Structural, electrical and mechanical properties of NiO thin films grown by Pulsed Laser Deposition, I. Fasaki, A. Koutoulaki, M. Kompitsas, C. Charitidis, Applied Surface Science 257, 429–433 (2010)

22.  Mathematical modeling of cancer cell invasion of tissue: biological insight from mathematical analysis and computational simulation, Andasari V., Gerisch A, Lolas G., South A. P., and Chaplain M.A.J., Journal of Mathematical Biology (2010) 61(1).

23.  Encapsulation and Release of Corrosion Inhibitors into Titania Nanocontainers, Ioannis A. Kartsonakis, Ioannis L. Daniilidis, George S. Pappas, George C. Kordas, Journal for Nanoscience and Nanotechnology: (2010) Vol.10 1-9.

24.  Synthesis and Characterization of Cerium Molybdate Nanocontainers and their Inhibitor Complexes, I.A. Kartsonakis, G. Kordas, Journal of the American Ceramic Society: (2010) 93 [1]:65.

25.  Synthesis of conductive polymeric composite coatings for corrosion protection applications, A. Tsirimpis, I.A. Kartsonakis, I. Danilidis, G. Kordas, Progress in Organic Coatings: (2010) 67 [4] 389-397.

26.  Rapid thermal annealing temperature dependence of noise properties in Au/n-GaAs Schottky diodes with embedded InAs quantum dots in asymmetric In0.2Ga0.8As wells, N. Arpatzanis, N.A. Hastas, C.A. Dimitriadis, G. Konstantinidis, C. Charitidis, J.D. Song, W.J. Choi, J.I. Lee, Physica Status Solidi B 246, 880-884 (2009)

27.  Vacancy effect on the elastic constants of layer-structured nanomaterial, T.E. Karakasidis, C.A. Charitidis, Theoretical and Applied Fracture Mechanics 51, 195–201 (2009)

28.  Ideality factor dependence of capacitance and reverse current noise in Au/n-GaAs Schottky diodes with embedded self-assembled InAs quantum dots, N. Arpatzanis, N.A. Hastas, C.A. Dimitriadis, C. Charitidis, J.D. Song, W.J. Choi, J.I. Lee, Physica Status Solidi (c) 5, 3617–3621 (2008)

29.  Effect of deposition pressure and post deposition annealing on SmCo thin film properties, Th. Speliotis, E. Makarona, F. Chouliaras, C. Charitidis, Ch. Tsamis, D. Niarchos, Physica Status Solidi (c) 5, 3759–3762 (2008)

30.  QDIP technology and market prospects in the sectors of Defense, Environment, and Security, C. Charitidis, A. Golnas, F. Chouliaras, N. Arpatzanis, C.A. Dimitriadis, J.I. Lee, C. Bakolias, Physica Status Solidi (c) 5, 3872-3876 (2008)

31.  Interface Controlled Active Fracture Modes in Glass-Ceramics, P. Kavouras, Th. Kehagias, Ph. Komninou, K. Chrissafis, C. Charitidis, Th. Karakostas, Journal of Materials Science 43, 3954-3959 (2008)

32.  Effect of rapid thermal annealing on the noise properties of InAs/GaAs quantum dot structures, N. Arpatzanis, A. Tsormpatzoglou, C.A. Dimitriadis, J.D. Song, W.J. Choi, J.I. Lee, C. Charitidis, Journal of Applied Physics 102, 054302(1-6) (2007)

33.  Current–voltage and Noise characteristics of reverse-biased AU/N-GAAS Schottky diodes with embedded INAS quantum dots, N. Arpatzanis, D.H. Tassis, C.A. Dimitriadis, C. Charitidis, J.D. Song, W.J. Choi, J.I. Lee, Semiconductor Science & Technology 22, 1086–1091 (2007)

34.  Elastic properties of nanostructured materials with layered grain boundary structure, T.E. Karakasidis, C.A. Charitidis, D. Skarakis, F. Chouliaras,       Surface Science 601, 3521–3527 (2007)

35.  Multiscale modeling in nanomaterials science, T.E. Karakasidis, C.Α. Charitidis, Materials Science and Engineering C-Biomimetic and Supramolecular Systems 27, 1082–1089 (2007)

36.  Size effect of crystalline inclusions on the fracture modes in glass-ceramic materials, C. Charitidis, T.E. Karakasidis, P. Kavouras, Th. Karakostas, Journal of Physics: Condensed Matter 19, 266209(12pp) (2007)

37.  Nanomechanical and nanotribological properties of silicon oxide thin films on polymeric membranes, C.A. Charitidis, S. Kassavetis, S. Logothetidis, Journal of Mechanical Behavior of Materials 18, 157-165 (2007)

38.  Correlation of elastic modulus, hardness and density for sputtered TiAlBN thin films, C.G. Rebholz, A. Leyland, A. Matthews, C. Charitidis, S. Logothetidis, D. Schneider, Thin Solid Films 514, 81–86 (2006)

39.  On the parameters affecting the fracture modes in glass-ceramic materials, P. Kavouras, C. Charitidis, Th. Karakostas, Journal of Non-Crystalline Solids 352, 5515-5521 (2006)

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