Asiikkis, A.T., D.G.E. Grigoriadis & A.I. Vakis, Wave-to-Wire Modelling and Hydraulic PTO Optimization of a Dense Point Absorber WEC Array, Renewable Energy, 2024, 121620

Kousemaker, T.M., P.D. Druetta, F. Picchioni & A.I. Vakis, Modelling Supercritical CO2 Flow in a Co-rotating Twin Screw Extruder Using the Level Set Method, Chemical Engineering Research and Design, 2024, 205

Bechlenberg, A., E. Luning, M.B. Saltik, N.B. Szirbik, B. Jayawardhana & A.I. Vakis, Renewable Energy System Sizing with Power Generation and Storage functions accounting for its Optimized Activity on Multiple Electricity Markets, Applied Energy, 2024, 360(122742)

Gao, Q., A. Bechlenberg, A.I. Vakis, N. Ertugrul, B. Jayawardhana & B. Ding, Techno-Economic Assessment of Offshore Wind and Hybrid Wind-Wave Farms with Energy Storage Systems, Renewable and Sustainable Energy Reviews, 2024, 192(114263)

Nienhuis, R.M., M. van Rooij, W.A. Prins, B. Jayawardhana & A.I. Vakis, Investigating the Efficiency of a Novel Offshore Pumped Hydro Energy Storage System: Experimental Study on a Scale Prototype, Journal of Energy Storage, 2023, 74(Part A)

Saincher, S., V. Sriram, R. Ravindar, S. Yan, D. Stagonas, Z. Xie, M. Benoit, W. Benguigui, M. Teles, F. Robaux, C. Peyrard, A.T. Asiikkis, C. Frantzis, A.I. Vakis, D.G.E. Grigoriadis, Q. Li, Q. Ma, N. Zhang, K. Zheng, X. Zhao, X. Hu, S. Chen, S. Chen, Q. Meng & D. Wan, Comparative study on breaking waves interactions with vertical wall attached with recurved parapet in small and large scale, International Journal of Offshore and Polar Engineering, 2023, 33(2)

Bechlenberg, A., Y. Wei, B. Jayawardhana & A.I. Vakis, Analysing the influence of power take-off adaptability on the power extraction of dense wave energy converter arrays, Renewable Energy, 2023, 211

Schmerbauch, A.E.M., A.O. Krushynska, A.I. Vakis & B. Jayawardhana, Modular kirigami arrays for distributed actuation systems in adaptive optics, Physical Review Applied, 2022, 17(044012)

Schmerbauch, A.E.M., A.I. Vakis & B. Jayawardhana, Electrical coupling analysis of 2D time-multiplexing memory actuators exhibiting asymmetric butterfly hysteresis, Journal of Applied Physics, 2021, 130(134502)

Wei, Y., A. Bechlenberg, B. Jayawardhana & A.I. Vakis, Modeling of a wave energy converter array with nonlinear power take-off using a mixed time-domain/frequency-domain method, IET Renewable Power Generation, 2021, 1-12

Kousemaker, T.M., G.H. Jonker & A.I. Vakis, LCA practices of plastics and their recycling: A critical review, Applied Sciences, 2021, 11(8), 3305

Michele, S., F. Buriani, E. Renzi, M. van Rooij, B. Jayawardhana & A.I. Vakis, Wave extraction from flexible floaters, Energies, 2020, 13(23)

Schmerbauch, A.E.M., M.A. Vasquez Beltran, A.I. Vakis, B. Jayawardhana & R. Huisman, Influence functions for a high pixel number hysteretic deformable mirror concept, Applied Optics, 2020, 59(27)

Groen, M., S. Solhjoo, R. Voncken, J. Post & A.I. Vakis, A standard method for material descriptions in FEM, Advances in Computer Software, 2020, 148

Li, J., B. Sundman, J. Winkelman, A.I. Vakis & F. Picchioni, Implementation of the UNIQUAC model in the OpenCalphad software, Fluid Phase Equilibria, 2020, 507

Solhjoo, S., P.J. Halbertsma, M. Veldhuis, R. Toljaga, Y.T. Pei & A.I. Vakis, Effects of loading conditions on free surface roughening of AISI 420 martensitic stainless steel, Journal of Materials Processing Technology, 2020, 275

Solhjoo, S., M.H. Müser & A.I. Vakis, Nanocontacts and Gaussian filters: Insights into the idea of filtering contact stress fields for removing the effects of surface roughness at the atomic scale, Tribology Letters, 2019, 67:94

Wei, Y., A. Bechlenberg, M. van Rooij, B. Jayawardhana & A.I. Vakis, Modelling of a wave energy converter array with nonlinear power take-off system in the frequency domain, Applied Ocean Research, 2019, 90

Mokkaber, T., Q. Zhou, A.I. Vakis, P. van Rijn & Y.T. Pei, Mechanical and biological properties of electrodeposited calcium phosphate coatings, Materials Science and Engineering: C, 2019, 100 

Wei, Y., J.J. Barradas-Berglind, Z. Yu, M. van Rooij, W.A. Prins, B. Jayawardhana & A.I. Vakis, Frequency-Domain Hydrodynamic Modelling of Dense and Sparse Arrays of Wave Energy Converters, Renewable Energy, 2019, 135

Barradas-Berglind, J.J., H.T. Dijkstra, Y. Wei, M. van Rooij, H. Meijer, W.A. Prins, A.I. Vakis & B. Jayawardhana, Revenue maximization and storage utilization for the Ocean Grazer wave energy converter: a Sensitivity Analysis, IET Renewable Power Generation, 2018, 12(11)

Vakis, A.I., V.A. Yastrebov, J. Scheibert, L. Nicola, D. Dini, C. Minfray, A. Almqvist, M. Paggi, S. Lee, G. Limbert, J.F. Molinari, G. Anciaux, S. Echeverri Restrepo, A. Papangelo, A. Cammarata, P. Nicolini, R. Aghababei, C. Putignano, S. Stupkiewicz, J. Lengiewicz, G. Costagliola, F. Bosia, R. Guarino, N.M. Pugno, G. Carbone, M.H. Müser & M. Ciavarella, Modeling and Simulation in Tribology Across Scales: an Overview, Tribology International, 2018, 123

Mokkaber, T., L.Q. Lu, P. van Rijn, A.I. Vakis & Y.T. Pei, Crystal growth mechanism of calcium phosphate coatings on titanium by electrochemical deposition, Surface and Coatings Technology, 2018, 334

Müser, M.H., W.B. Dapp, R. Bugnicourt, P. Sainsot, N. Lesaffre, T.A. Lubrecht, B.N.J. Persson, K. Harris, A. Bennett, K. Schulze, S. Rohde, P. Ifju, W.G. Sawyer, T. Angelini, H. Ashtari Esfahani, M. Kadkhodaei, S. Akbarzadeh, J.-J. Wu, G. Vorlaufer, A. Vernes, S. Solhjoo, A.I. Vakis, R.L. Jackson, Y. Xu, J. Streator, A. Rostami, D. Dini, S. Medina, G. Carbone, F. Bottiglione, L. Afferrante, J. Monti, L. Pastewka, M.O. Robbins & J.A. Greenwood, Meeting the Contact-Mechanics Challenge, Tribology Letters, 2017, 65(4)

Song, H., A.I. Vakis, X. Liu & E. van der Giessen, Statistical model of rough surface contact accounting for size dependent plasticity and asperity interaction, Journal of the Mechanics and Physics of Solids, 2017, 106

Solhjoo, S. & A.I. Vakis, Surface roughness of gold substrates at the nanoscale: an atomistic simulation study, Tribology International, 2017, 115

Wei, Y., J.J. Barradas-Berglind, M. van Rooij, W.A. Prins, B. Jayawardhana & A.I. Vakis, Investigating the Adaptability of the Multi-Pump Multi-Piston Power Take-Off System for a Novel Wave Energy Converter, Renewable Energy, 2017, 111

Solhjoo, S., A.I. Vakis & Y.T. Pei, Two phenomenological models to predict the single peak flow stress curves up to the peak during hot deformation, Mechanics of Materials, 2016, 105

Solhjoo, S. & A.I. Vakis, Continuum mechanics at the atomic scale: Insights into non-adhesive contacts using molecular dynamics simulations, Journal of Applied Physics, 2016, 120(21)

Vakis, A.I. & J.S. Anagnostopoulos, Mechanical design and modeling of a single-piston pump for the novel power take-off system of a wave energy converter, Renewable Energy, 2016, 96(Part A)

Solhjoo, S. & A.I. Vakis, Definition and detection of contact in atomistic simulations, Computational Materials Science, 2015, 109

Solhjoo, S. & A.I. Vakis, Single asperity nanocontacts: comparison between molecular dynamics simulations and continuum mechanics models, Computational Materials Science, 2015, 99

Chowdhury, S., A.I. Vakis & A.A. Polycarpou, Optimization of molecularly thin lubricant to improve bearing capacity at the head-disk interface, Microsystem Technologies, 2015, 21(7)

Vakis, A.I., Asperity interaction and substrate deformation in statistical summation models of contact between rough surfaces, Journal of Applied Mechanics, 2014, 81(4) & Song, H., E. van der Giessen & A.I. Vakis, Erratum: Asperity Interaction and Substrate Deformation in Statistical Summation Models of Contact Between Rough Surfaces [Journal of Applied Mechanics, 2014, 81(4), pp. 041012], Journal of Applied Mechanics, 2016, 83(8)

Vakis, A.I. & A.A. Polycarpou, An advanced rough surface continuum-based contact and sliding model in the presence of molecularly thin lubricant, Tribology Letters, 2013, 49(1)

Vakis, A.I. & A.A. Polycarpou, Passive vibration absorption for extremely high density recording, IEEE Transactions on Magnetics, 2012, 48(11)

Vakis, A.I., C.N. Hadjicostis & A.A. Polycarpou, Three-DOF dynamic model with lubricant contact for thermal fly-height control nanotechnology, Journal of Physics D: Applied Physics, 2012, 45(13)

Vakis, A.I. & A.A. Polycarpou, Modeling sliding contact of rough surfaces with molecularly thin lubricants, Tribology Letters, 2012, 45(1)

Vakis, A.I., M. Eriten & A.A. Polycarpou, Modeling bearing and shear forces in molecularly thin lubricants, Tribology Letters, 2011, 41(3)

Vakis, A.I. & A.A. Polycarpou, Head-disk interface nanotribology for Tbit/in2recording densities: near-contact and contact recording, Journal of Physics D: Applied Physics, 2010, 43(22)

Vakis, A.I. & A.A. Polycarpou, Optimization of thermal fly-height control slider geometry for Tbit/in2 recording, Microsystem Technologies, 2010, 16(6)

Vakis, A.I., S.-C. Lee & A.A. Polycarpou, Dynamic head-disk interface instabilities with friction for light contact (surfing) recording, IEEE Transactions on Magnetics, 2009, 45(11)

Spagna, J.C., A.I. Vakis, C.A. Schmidt, S.N. Patek, X. Zhang, N.D. Tsutsui & A.V. Suarez, Phylogeny, scaling, and the generation of extreme forces in trap-jaw ants, Journal of Experimental Biology, 2008, 211(14)

Kousemaker, T.M., P.D. Druetta, F. Picchioni & A.I. Vakis, Modelling Supercritical CO2 Bubble Breakup Dynamics in Twin Screw Extruders, ASME FEDSM, Anaheim, CA, USA, 15-17 July 2024

Wiegner, J.F., I. Ossentjuk, R.M. Nienhuis, A.I. Vakis, M. Gibescu & M. Gazzani, Harvesting the Wind - Assessment of Offshore Energy Storage Systems, ESCAPE34-PSE24, Florence, Italy, 2-6 June 2024

Bechlenberg, A., Y. Wei, B. Jayawardhana & A.I. Vakis, Analysis of the impact of floater interactions on the power extraction of a dense WEC array with adaptable nonlinear PTO, EWTEC 2023, Bilbao, Spain, 3-8 September 2023

Asiikkis, A.T., D.G.E. Grigoriadis & A.I. Vakis, Maximizing the surge amplitude of a floater through an adaptable mooring tightening technique, EWTEC 2023, Bilbao, Spain, 3-8 September 2023

Wang, C., E.J. Stamhuis, A.E.P. Veldman & A.I. Vakis, Vortex induced vibrations of marine risers: validating turbulence models, EWTEC 2023, Bilbao, Spain, 3-8 September 2023

Asiikkis, A.T., C. Frantzis, D. Stagonas, A.I. Vakis & D.G.E. Grigoriadis, 2D LES of breaking waves on seawalls with recurved parapets, ISOPE 2022, Shanghai, China, 5-10 June 2022

A.E.M. Schmerbauch, A.I. Vakis, B. Jayawardhana & R. Huisman, Modeling and analysis of a hysteretic deformable mirror with electrically coupled actuators, AIM 2020, Boston, MA, 6-10 July 2020

Alpizar-Castillo, J., M.Z. Almuzakki, Y. Wei, M. Munoz-Arias, A.I. Vakis & B. Jayawardhana, An energy extraction optimization port-Hamiltonian model-based algorithm for the Ocean Grazer Wave Energy Converter, INDETEC 2020, San Jose, Costa Rica, 1-3 April 2020

Mokabber, T., P. van Rijn, A.I. Vakis & Pei, Y., Adhesion of osteoblast-like cells on electrodeposited calcium phosphate coatings, THERMEC 2018: Advanced Materials for Bioengineering Applications, 2018, 816

Almuzakki, M.Z., J.J. Barradas-Berglind, Y. Wei, M. Munoz-Arias, A.I. Vakis & B. Jayawardhana, A port-Hamiltonian Approach to Cummins’ Equation for Floater Arrays with Linear Power Take-Off Systems, IFAC-PapersOnLine, 2018, 51(3)

Tay, Z.Y., Y. Wei & A.I. Vakis, Energy Extraction of Pontoon-Type Wave Energy Converter, OMAE 2018, Madrid, Spain, 17-22 June 2018

Wang, R., Y. Wei, M. van Rooij, W.A. Prins, B. Jayawardhana & A.I. Vakis, Influence of a taut cable on the performance of a point-absorber wave energy converter, OMAE 2018, Madrid, Spain, 17-22 June 2018

Wei, Y., M.Z. Almuzakki, J.J. Barradas-Berglind, R. Wang, M. van Rooij, W.A. Prins, B. Jayawardhana & A.I. Vakis, A Fourier approximation method for the Multi-Pump Multi-Piston Power Take-Off System, OMAE 2018, Madrid, Spain, 17-22 June 2018

Wei, Y., J.J. Barradas-Berglind, M. van Rooij, W.A. Prins, B. Jayawardhana & A.I. Vakis, A Frequency-Domain Model for a Novel Wave Energy Converter, EWTEC 2017, Cork, Ireland, 27 August-2 September 2017

Barradas-Berglind, J.J., M. Munoz-Arias, Y. Wei, W.A. Prins, A.I. Vakis & B. Jayawardhana, Towards Ocean Grazer's Modular Power Take-Off System Modelling: a Port-Hamiltonian Approach, IFAC-PapersOnLine, 2017, 50(1) (Invited paper)

Dijkstra, H.T., J.J. Barradas-Berglind, H. Meijer, M. van Rooij, W.A. Prins, A.I. Vakis & B. Jayawardhana, Revenue Optimization for the Ocean Grazer Wave Energy Converter through Storage Utilization, RENEW 2016 Conference, Lisbon, Portugal, 24-28 October 2016

Barradas-Berglind, J.J., H. Meijer, M. van Rooij, S. Clemente Pinol, B. Galvan Garcia, W. Prins, A.I. Vakis & B. Jayawardhana, Energy Capture Optimization for an Adaptive Wave Energy Converter, RENEW 2016 Conference, Lisbon, Portugal, 24-28 October 2016

Solhjoo, S. & A.I. Vakis, Molecular dynamics simulations of rough contact with fractal and statistical surface generation, ASME 2014 12th Biennial Conference on Engineering Systems Design & Analysis (ESDA), Copenhagen, Denmark, 25-27 June 2014

Vakis, A.I., H. Meijer &W.A. Prins, First steps in the design and construction of the Ocean Grazer, ASME 2014 12th Biennial Conference on Engineering Systems Design & Analysis (ESDA), Copenhagen, Denmark, 25-27 June 2014

Vakis, A.I., S.-C. Lee & A.A. Polycarpou, Dynamic contact with friction of an ultra-low flying head-disk interface with thermal protrusion, Asia-Pacific Magnetic Recording Conference (APMRC), Singapore, 14-16 January 2009

Bechlenberg, A., Y. Wei, B. Jayawardhana & A.I. Vakis, Analysis of power take-off adaptability in dense wave energy converter arrays, ICOE 2021, Online, 28-30 April 2021

Almuzakki, M.Z., J.J. Barradas-Berglind, Y. Wei, M. Munoz-Arias, A.I. Vakis & B. Jayawardhana, Extending Cummins' Equation to Floater Arrays: a port-Hamiltonian Approach, 37th Benelux Meeting on Systems and Control, Soesterberg, Netherlands, 27-29 March 2018

Song, H., A.I. Vakis, X. Liu & E. van der Giessen, From Discrete Dislocation Plasticity to a Statistical Model of Rough Surface Contact, 2017 MRS Fall Meeting & Exhibit, Boston, MA, 26 November-1 December 2017

Brenes-Casasola, J., M. Muñoz-Arias, J.J. Barradas-Berglind, W.A. Prins, A.I. Vakis & B. Jayawardhana, Energy Extraction Analysis of the Ocean Grazer WEC via Digital Particle Image Velocimetry, 36th Benelux Meeting on Systems and Control, Spa, Belgium, 28-30 March 2017

Barradas-Berglind, J.J., M. Muñoz-Arias, Y. Wei, W.A. Prins, A.I. Vakis & B. Jayawardhana, Energy-based Modeling of the Ocean Grazer Power Take-off System, 36th Benelux Meeting on Systems and Control, Spa, Belgium, 28-30 March 2017

Mokabber, T., P. van Rijn, A.I. Vakis & Y.T. Pei, Adhesion of cells on synthesized hydroxyapatite coatings with different morphologies, Netherlands Society for Biomaterials and Tissue Engineering (NBTE) 25th Annual Meeting, Lunteren, the Netherlands, 1-2 December 2016

Solhjoo, S. & A.I. Vakis, The Area of Contact for Non-Adhesive Rough Surfaces: Comparison between MD and Persson’s Model, Multiscale Materials Modelling (MMM) 2016, Dijon, France, 9-14 October 2016

Solhjoo, S. & A.I. Vakis, Lubricated normal and sliding contact of fractal rough surfaces at the atomic scale, COSTnanoTribo Conference, Istanbul, Turkey, 22-26 June 2015

van Rooij, M., H. Meijer, W.A. Prins & A.I. Vakis, Experimental performance evaluation and validation of dynamical contact models of the Ocean Grazer, MTS/IEEE Oceans15, Genoa, Italy, 18-21 May 2015

Solhjoo, S. & A.I. Vakis, Normal contacts of lubricated fractal rough surfaces at the atomic scale, TriboUK 2015, Loughborough, UK, 16-17 April 2015

Vakis, A.I., M. Eriten & A.A. Polycarpou, Molecularly thin lubricant layer contact model accounting for interfacial slip, International Joint Tribology Conference (IJTC), San Francisco, CA, 17-20 October 2010

Vakis, A.I. & A.A. Polycarpou, Nanoscale Mechanics for Extremely High Density Recording, Hellenic Society for Theoretical and Applied Mechanics (HSTAM) International Congress on Mechanics, Limassol, Cyprus, 12-14 July 2010

Zhang, X., K. Li & A.I. Vakis, Biological Inspiration from Dynamic Modeling of Human Hand and trap-jaw ant Mandible Movements, Journal of Biomechanics, 2007, 40: p. S79

Spagna, J.C., S.N. Patek, A.I. Vakis & A.V. Suarez, Extreme forces and jaw size variation in trap-jaw ants, Integrative and Comparable Biology, 2006, 46: p. E134-E134

Vakis, A.I. & A.A. Polycarpou, Dynamic adhesive contact with molecularly thin lubricant at the head-disk interface of hard disk drives, STLE’s Official Membership Magazine, TLT (Tribology & Lubrication Technology), 2012 (Invited paper). Additional content: interview

Asiikkis, A.T., D.G.E. Grigoriadis & A.I. Vakis, Wave-to-Wire Modelling and Hydraulic Pto Optimization of a Dense Point Absorber Wec Array, SSRN, Preprint, 12 August 2024

Kousemaker, T.M., P.D. Druetta, F. Picchioni & A.I. Vakis, Numerical Modelling of Mass Transfer and the Plasticization Effect of Supercritical CO2 on Polypropylene During Extrusion, SSRN, Preprint, 23 July 2024

Bernal-Camacho, D.F., E. Mendoza, J.V.H. Fontes, C. Echeverria & A.I. Vakis, Improvement of the Stability of a Floating Offshore Wind Turbine by a Centreboard and Heave Plate System, SSRN, Preprint, 20 December 2023

Bechlenberg, A., E. Luning, M.B. Saltik, N.B. Szirbik, B. Jayawardhana & A.I. Vakis, Renewable Energy System Sizing with Power Generation and Storage functions accounting for its Optimized Activity on Multiple Electricity Markets, SSRN, Preprint, 9 October 2023

Gao, Q., A. Bechlenberg, A.I. Vakis, N. Ertugrul, B. Jayawardhana & B. Ding, Techno-Economic Assessment of Offshore Wind and Hybrid Wind-Wave Farms with Energy Storage Systems, SSRN, Preprint, 14 February 2023

Schmerbauch, A.E.M., M.A. Vasquez Beltran, A.I. Vakis, R. Huisman & B. Jayawardhana, Influence functions for a hysteretic deformable mirror with a high density 2D array of actuators, arXiv:2005.07418, Preprint, 20 September 2022

Bechlenberg, A., Y. Wei, B. Jayawardhana & A.I. Vakis, Analysing the influence of power take-off adaptability on the power extraction of dense wave energy converter arrays, arXiv:2207.07525, Preprint, 11 August 2022

Prins, W., M. van Rooij, A.I. Vakis & B. Jayawardhana, Underwater energy storage system, 20-Jun-2019, Patent No. WO2019117711, 10-Dec-2018, Priority date 11-Dec-2017