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doc. Ing.
Ph.D.
FME, FME AS CAS – Member
+420 54114 3239necas@fme.vutbr.cz
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2025
David Nečas, Daniel Němeček, Jan Gregora, David Rebenda, Zuzana Kadlecová, Ivana Chamradová, Monika Trudičová, Pavel Čípek, Petr Čípek, Ladislav Šnajdárek, Lucy Vojtová, Martin Vrbka, Ivan Křupka, Martin Hartl. Toward Cartilage-Mimicking Biomaterials: Biotribological, Biochemical and Structural Evaluation of pHEMA and PVA-Based Hydrogels. ACS Omega, 2025, vol. 10, iss. 51, p. 63441-63454.
WoS Article
STREĎANSKÁ, A.; ŠIMEK, M.; MATONOHOVÁ, J.; NEČAS, D.; VRBKA, M.; SUCHÁNEK, J.; PAVLIŇÁKOVÁ, V.; VOJTOVÁ, L.; HARTL, M.; KŘUPKA, I.; NEŠPOROVÁ, K. Optimizing Hyaluronan-Based Lubricants for Treating Thoracolumbar Fascia Pathologies: Insights from Tribological and Pharmacokinetic Studies. Lubricants, 2025, vol. 13, iss. 4, p. 1-17. ISSN: 2075-4442.
REBENDA, D.; ODEHNAL, L.; UHROVÁ, S.; NEČAS, D.; VRBKA, M. On the Friction and Lubrication of 3D Printed Ti6Al4V Hip Joint Replacement. Tribology letter, 2025, vol. 73, iss. 2, p. 1-18. ISSN: 1023-8883.
RANUŠA, M.; ODEHNAL, L.; KUČERA, O.; NEČAS, D.; HARTL, M.; KŘUPKA, I.; VRBKA, M. Effect of Surface Texturing on Friction and Lubrication of Ti6Al4V Biomaterials for Joint Implants. Tribology letter, 2025, vol. 73, iss. 1, p. 1-18. ISSN: 1023-8883.
NĚMEČEK, D.; NEČAS, D.; SHINMORI, H.; YARIMITSU, S.; MARIAN, M.; VRBKA, M.; SAWAE, Y.; KŘUPKA, I.; HARTL, M. A glance into the boundary lubrication mechanism of PVA hydrogel after the reduction of interstitial fluid pressurization. Friction, 2025, vol. 13, iss. 12, p. 01-16.
David Nečas, Adam Gelnar, Benedict Rothammer, Max Marian, Matúš Ranuša, Sandro Wartzack, Martin Vrbka, Ivan Křupka, Martin Hartl. Frictional Behaviour and Surface Topography Evolution of DLC-Coated Biomedical Alloys. Biosurface and Biotribology, 2025, vol. 1, iss. 11, p. e70004-01 (e70004-014 p.)
2024
KUBÍK, M.; ŽÁČEK, J.; GOLDASZ, J.; NEČAS, D.; SEDLAČÍK, M.; BLAHUTA, J.; BAŃKOSZ, W.; SAPINSKI, B. Grasping the behavior of magnetorheological fluids in gradient pinch mode via microscopic imaging. Physics of fluids, 2024, vol. 36, iss. 4, p. 042004-1 (042004-10 p.)ISSN: 1070-6631.
STREĎANSKÁ, A.; NEČAS, D.; VRBKA, M.; SUCHÁNEK, J.; MATONOHOVÁ, J.; TOROPITSYN, J.; HARTL, M.; KŘUPKA, I.; NEŠPOROVÁ, K. Understanding frictional behavior in fascia tissues through tribological modeling and material substitution. Journal of the Mechanical Behavior of Biomedical Materials, 2024, vol. 155, iss. 7, p. 1-12. ISSN: 1751-6161.
2023
NEČAS, D.; KULÍŠEK, V.; ŠTĚPÁN, P.; ONDREÁŠ, F.; ČÍPEK, P.; HUERTA-ANGELES, G.; VRBKA, M. Friction and Lubrication of Eye/Lens/Lid Interface: The Effect of Lubricant and Contact Lens Material. Tribology letter, 2023, vol. 71, iss. 4, p. 118-118. ISSN: 1023-8883.
NEŠPOROVÁ, K.; MATONOHOVÁ, J.; HUSBY, J.; TOROPITSYN, E.; DIVOKÁ STUPECKÁ, L.; HUSBY, A.; SUCHÁNKOVÁ KLEPLOVÁ, T.; STREĎANSKÁ, A.; ŠIMEK, M.; NEČAS, D.; VRBKA, M.; SCHLEIP, R.; VELEBNÝ, V. Injecting hyaluronan in the thoracolumbar fascia: A model study. International Journal of Biological Macromolecules, 2023, vol. 253, iss. 3, p. 126879-126879. ISSN: 0141-8130.
NEČAS, D.; YARIMITSU, S.; REBENDA, D.; SHINMORI, H.; VRBKA, M.; SAWAE, Y.; MURAKAMI, T.; KŘUPKA, I. On the Replacement of Articular Cartilage: The Friction of PVA Hydrogel Layer in Hip Simulator Test. Tribology International, 2023, vol. 178, iss. Part B, p. 108100-108100. ISSN: 0301-679X.
BUCHTÍK, M.; BŘEZINA, M.; MRŇA, L.; PALÁN, M.; FILIPENSKÝ, J.; DOLEŽAL, P.; NEČAS, D.; FRÝZA, J.; KAJÁNEK, D.; WASSERBAUER, J.; DOSKOČIL, L. Effect of Laser Remelting of Fe-Based Thermally Sprayed Coating on AZ91 Magnesium Alloy on Its Structural and Tribological Properties. Coatings, MDPI, 2023, vol. 13, iss. 6, p. 1-16. ISSN: 2079-6412.
2022
ŽÁČEK, J.; NEČAS, D.; KUBÍK, M. Wear of seal materials in magnetorheological fluid: Effect of seal material selection. In Materials Science Forum. Materials Science Forum. 1065. 2022. iss. 1, p. 71-78. ISSN: 0255-5476.
Paper in proceedings (conference paper)
MARIAN, M.; BERMAN, D.; NEČAS, D.; EMAMI, N.; RUGGIERO, A.; ROSENKRANZ, A. Roadmap for 2D materials in biotribological/biomedical applications – A review. ADVANCES IN COLLOID AND INTERFACE SCIENCE, 2022, vol. 307, iss. 9, p. 102747-102747. ISSN: 0001-8686.
STREĎANSKÁ, A.; NEČAS, D.; VRBKA, M.; KŘUPKA, I.; HARTL, M.; TOROPITSYN, E.; HUSBY, J. Development of Tribological Model of Human Fascia: The Influence of Material Hardness and Motion Speed. Biotribology, 2022, vol. 30, iss. 2, p. 100209-100209. ISSN: 2352-5738.
Scopus Article
QUINN, C.; NEČAS, D.; ŠPERKA, P.; MARIAN, M.; VRBKA, M.; KŘUPKA, I.; HARTL, M. Experimental investigation of friction in compliant contact: The effect of configuration, viscoelasticity and operating conditions. Tribology International, 2022, vol. 165, iss. 1, p. 107340-107340. ISSN: 0301-679X.
2021
NEČAS, D.; MARIAN, M.; SAWAE, Y. Lubrication of hip and knee joint replacements: The contribution of experiments and numerical modeling. In Biotribology Emerging Technologies and Applications. 1. Boca Raton, Florida: CRC Press, 2021. p. 33.ISBN: 9780367687854.
Chapter in a book
REBENDA, D.; VRBKA, M.; NEČAS, D.; TOROPITSYN, E.; YARIMITSU, S.; ČÍPEK, P.; PRAVDA, M.; HARTL, M. Rheological and frictional analysis of viscosupplements towards improved lubrication of human joints. Tribology International, 2021, vol. 160, iss. 1, p. 107030-107030. ISSN: 0301-679X.
MARIAN, M.; ORGELDINGER, C.; ROTHAMMER, R.; NEČAS, D.; VRBKA, M.; KŘUPKA, I.; HARTL, M.; WIMMER, M.A.; TREMMEL, S.; WARTZACK, S. Towards the Understanding of Lubrication Mechanisms in Total Knee Replacements – Part II: Numerical Modeling. Tribology International, 2021, vol. 156, iss. 4, p. 106809-106809. ISSN: 0301-679X.
ČÍPEK, P.; VRBKA, M.; REBENDA, D.; NEČAS, D.; KŘUPKA, I. Biotribology of synovial cartilage: Role of albumin in adsorbed film formation. Engineering Science and Technology, an International Journal, 2021, vol. 34, iss. 1, p. 1-12. ISSN: 2215-0986.
SVOBODA, P.; ŠIKULA, P.; VRBKA, M.; NEČAS, D.; ROUBALÍKOVÁ, L. VYUŽITÍ TRIBOLOGICKÝCH METOD PRO PREDIKCI OPOTŘEBENÍ DENTÁLNÍCH VÝPLŇOVÝCH MATERIÁLŮ. Česká Stomatologie a Praktické zubní lékařství. Česká lékařská společnost J.E.Purkyně FF FP, 2021, roč. 121, č. 4, s. 108-115. ISSN: 1213-0613.
Peer-reviewed article not indexed in WoS or Scopus
NEČAS, D.; SADECKÁ, K.; VRBKA, M.; GALANDÁKOVÁ, A.; WIMMER, M.A.; GALLO, J.; HARTL, M. The Effect of Albumin and γ-globulin on Synovial Fluid Lubrication: Implication for Knee Joint Replacements. Journal of the Mechanical Behavior of Biomedical Materials, 2021, vol. 113, iss. 1, p. 104117-104117. ISSN: 1751-6161.
NEČAS, D.; VRBKA, M.; MARIAN, M.; ROTHAMMER, B.; TREMMEL, S.; WARTZACK, S.; GALANDÁKOVÁ, A.; GALLO, J.; WIMMER, M.; KŘUPKA, I.; HARTL, M. Towards the Understanding of Lubrication Mechanisms in Total Knee Replacements – Part I: Experimental Investigations. Tribology International, 2021, vol. 156, iss. 4, p. 106874-106874. ISSN: 0301-679X.
ČERNOHLÁVEK, M.; BRANDEJSOVÁ, M.; ŠTĚPÁN, P.; VÁGNEROVÁ, H.; HERMANNOVÁ, M.; KOPECKÁ, K.; KULHÁNEK, J.; NEČAS, D.; VRBKA, M.; VELEBNÝ, V.; ANGELES, G. Insight into the Lubrication and Adhesion Properties of Hyaluronan for Ocular Drug Delivery. Biomolecules, 2021, vol. 11, iss. 10, p. 1431-1431. ISSN: 2218-273X.
2020
REBENDA, D.; VRBKA, M.; ČÍPEK, P.; TOROPITSYN, E.; NEČAS, D.; PRAVDA, M.; HARTL, M. On the Dependence of Rheology of Hyaluronic Acid Solutions and Frictional Behavior of Articular Cartilage. Materials, 2020, vol. 13, iss. 11, p. 1-14. ISSN: 1996-1944.
NEČAS, D.; USAMI, H.; NIIMI, T.; SAWAE, Y.; KŘUPKA, I.; HARTL, M. Running-in friction of hip joint replacements can be significantly reduced: The effect of surface-textured acetabular cup. Friction, 2020, vol. 8, iss. 6, p. 1137-1152. ISSN: 2223-7690.
LU, X.; NEČAS, D.; MENG, Q.; REBENDA, D.; VRBKA, M.; HARTL, M.; JIN, Z. Towards the direct validation of computational lubrication modelling of hip replacements. Tribology International, 2020, vol. 146, iss. 6, p. 106240-106240. ISSN: 0301-679X.
ČÍPEK, P.; VRBKA, M.; REBENDA, D.; NEČAS, D.; KŘUPKA, I. Biotribology of Synovial Cartilage: A New Method for Visualization of Lubricating Film and Simultaneous Measurement of the Friction Coefficient. Materials, 2020, vol. 13, iss. 9, p. 1-20. ISSN: 1996-1944.
FURMANN, D.; NEČAS, D.; REBENDA, D.; ČÍPEK, P.; VRBKA, M.; KŘUPKA, I.; HARTL, M. The effect of synovial fluid composition, speed and load on frictional behaviour of articular cartilage. Materials, 2020, vol. 13, iss. 6, p. 1-16. ISSN: 1996-1944.
2019
NEČAS, D.; VRBKA, M.; GALLO, J.; KŘUPKA, I.; HARTL, M. On the observation of lubrication mechanisms within hip joint replacements. Part II: Hard-on-hard bearing pairs. Journal of the Mechanical Behavior of Biomedical Materials, 2019, vol. 89, iss. 1, p. 249-259. ISSN: 1751-6161.
NEČAS, D.; VRBKA, M.; GALANDÁKOVÁ, A.; KŘUPKA, I.; HARTL, M. On the observation of lubrication mechanisms within hip joint replacements. Part I: Hard-on-soft bearing pairs. Journal of the Mechanical Behavior of Biomedical Materials, 2019, vol. 89, iss. 1, p. 237-248. ISSN: 1751-6161.
NEČAS, D.; SADECKÁ, K.; VRBKA, M.; GALLO, J.; GALANDÁKOVÁ, A.; KŘUPKA, I.; HARTL, M. Observation of lubrication mechanisms in knee replacement: A pilot study. Biotribology, 2019, vol. 17, iss. 2019, p. 1-7. ISSN: 2352-5738.
ČÍPEK, P.; REBENDA, D.; NEČAS, D.; VRBKA, M.; KŘUPKA, I.; HARTL, M. Visualization of Lubrication Film in Model of Synovial Joint. Tribology in Industry, 2019, vol. 41, iss. 3, p. 387-393. ISSN: 0354-8996.
2018
ČÍPEK, P.; REBENDA, D.; NEČAS, D.; VRBKA, M.; KŘUPKA, I. Development of reciprocating tribometer for testing synovial joint. In Engineering Mechanics 2018. Engineering Mechanics .... First edition. Praha: Institute of Theoretical and Applied Mechanics of the Czech Academy of Sciences, Prague, 2018. p. 169-172. ISBN: 978-80-86246-88-8. ISSN: 1805-8256.
REBENDA, D.; ČÍPEK, P.; NEČAS, D.; VRBKA, M.; HARTL, M. Effect of Hyaluronic Acid on Friction of Articular Cartilage. In Engineering Mechanics 2018. First. Praha: Institute of Theretical and Applied Mechanics of the Czech Academy of Sciences, 2018. p. 709-712. ISBN: 978-80-86246-91-8.
NEČAS, D.; VRBKA, M.; KŘUPKA, I.; HARTL, M. The Effect of Kinematic Conditions and Synovial Fluid Composition on the Frictional Behaviour of Materials for Artificial Joints. Materials, 2018, vol. 11, iss. 5, p. 1-12. ISSN: 1996-1944.
NEČAS, D.; VRBKA, M.; REBENDA, D.; GALLO, J.; GALANDÁKOVÁ, A.; WOLFOVÁ, L.; KŘUPKA, I.; HARTL, M. In Situ Observation of Lubricant Film Formation in THR Considering Real Conformity: The Effect of Model Synovial Fluid Composition. Tribology International, 2018, vol. 117, iss. 1, p. 206-216. ISSN: 0301-679X.
NEČAS, D.; VRBKA, M.; GALLO, J.; GALANDÁKOVÁ, A.; KŘUPKA, I.; HARTL, M. An Investigation of Lubrication Mechanisms within Hard-on-soft Hip Implants: A Pilot Study. In Proceedings of Asia International Conference on Tribology 2018 (ASIATRIB 2018). Malajsie: Malaysian Tribology Society, 2018. p. 149-150. ISBN: 978-967-13625-2-5.
NEČAS, D.; JAROŠ, T.; DOČKAL, K.; ŠPERKA, P.; VRBKA, M.; KŘUPKA, I.; HARTL, M. The effect of kinematic conditions on film thickness in compliant lubricated contact. JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME, 2018, vol. 140, iss. 5, p. 1-8. ISSN: 0742-4787.
2017
RANUŠA, M.; GALLO, J.; HOBZA, M.; VRBKA, M.; NEČAS, D.; HARTL, M. Opotřebení a drsnost artikulačního povrchu u extrahovaných polyetylénů jamky Bicon-Plus. Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca, 2017, roč. 84, č. 3, s. 159-167. ISSN: 0001-5415.
NEČAS, D.; VRBKA, M.; GALLO, J.; KŘUPKA, I.; HARTL, M. Observation of lubrication mechanisms within artificial hip joints. Sixth World Tribology Congress (WTC 2017). Peking: Chinese Tribology Institute (CTI), 2017. p. 1.
Abstract
NEČAS, D.; SAWAE, Y.; FUJISAWA, T.; NAKASHIMA, K.; MORITA, T.; YAMAGUCHI, T.; VRBKA, M.; KŘUPKA, I.; HARTL, M. The Influence of Proteins and Speed on Friction and Adsorption of Metal/UHMWPE Contact Pair. Biotribology, 2017, vol. 11, iss. 2017, p. 51-59. ISSN: 2352-5738.
NEČAS, D.; VRBKA, M.; URBAN, F.; GALLO, J.; KŘUPKA, I.; HARTL, M. In situ observation of lubricant film formation in THR considering real conformity: The effect of diameter, clearance and material. Journal of the Mechanical Behavior of Biomedical Materials, 2017, vol. 69, iss. 5, p. 66-74. ISSN: 1751-6161.
2016
NEČAS, D.; VRBKA, M.; URBAN, F.; KŘUPKA, I.; HARTL, M. The effect of lubricant constituents on lubrication mechanisms in hip joint replacements. Journal of the Mechanical Behavior of Biomedical Materials, 2016, vol. 55, iss. 3, p. 295-307. ISSN: 1751-6161.
NEČAS, D.; VRBKA, M.; YARIMITSU, S.; NAKASHIMA, K.; SAWAE, Y.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Frictional properties of PVA hydrogel. In The Latest Methods of Construction Design. Springer International Publishing, 2016. p. 159-164. ISBN: 978-3-319-22761-0.
TKACHENKO, S.; NEČAS, D.; DATSKEVICH, O.; ČUPERA, J.; SPOTZ, Z.; VRBKA, M.; KULAK, L.; FORET, R. Tribological Performance of Ti-Si-Based in Situ Composites. TRIBOLOGY TRANSACTIONS, 2016, vol. 59, iss. 2, p. 340-351. ISSN: 1040-2004.
NEČAS, D.; VRBKA, M.; KŘUPKA, I.; HARTL, M.; GALANDÁKOVÁ, A. Lubrication within hip replacements – Implication for ceramic-on-hard bearing couples. Journal of the Mechanical Behavior of Biomedical Materials, 2016, vol. 61, iss. 8, p. 371-383. ISSN: 1751-6161.
2015
BRHLÍK, R.; FICZA, I.; NEČAS, D.; KŘUPKA, I. Problematika modelování elastohydrodynamického mazání s využitím MKP. In 2015.
NEČAS, D.; ŠPERKA, P.; VRBKA, M.; KŘUPKA, I.; HARTL, M. Film thickness mapping in lubricated contacts using fluorescence. MM Science Journal, 2015, vol. 4, iss. 4, p. 821-824. ISSN: 1803-1269.
NEČAS, D.; VRBKA, M.; URBAN, F.; KŘUPKA, I.; HARTL, M.; GALLO, J. An experimental investigation of lubricant film formation in artificial hip joints. Proceedings of The 8th International Biotribology Forum and The 36th Biotribology Symposium. Yokohama: 2015. p. 73.
URBAN, F.; NEČAS, D.; VRBKA, M.; KŘUPKA, I.; HARTL, M. In Situ Observation of Lubricant Film within Artificial Hip Joints. Tokyo: Japanese Society of Tribologists, 2015. p. 860.
VRBKA, M.; NEČAS, D.; BARTOŠÍK, J.; HARTL, M.; KŘUPKA, I.; GALANDÁKOVÁ, A.; GALLO, J. Stanovení součinitele tření hlavic a jamek TEP kyčle. Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca, 2015, roč. 82, č. 5, s. 341-347. ISSN: 0001-5415.
VRBKA, M.; NEČAS, D.; HARTL, M.; KŘUPKA, I.; URBAN, F.; GALLO, J. Visualization of lubricating films between artificial head and cup with respect to real geometry. Biotribology, 2015, vol. 1-2, iss. 1, p. 61-65. ISSN: 2352-5738.
KOŠŤÁL, D.; NEČAS, D.; ŠPERKA, P.; SVOBODA, P.; KŘUPKA, I.; HARTL, M. Lubricant Rupture Ratio at Elastohydrodynamically Lubricated Contact Outlet. Tribology letter, 2015, vol. 59, iss. 3, p. 1 (jasne p.)ISSN: 1023-8883.
2014
TKACHENKO, S.; NEČAS, D.; DATSKEVICH, O.; ČUPERA, J.; SPOTZ, Z.; VRBKA, M.; KULAK, L.; FORET, R. Tribological behavior of Ti–Si based in situ composites under sliding. In Metal 2014. Ostrava: Tanger Ltd., 2014. p. 2704-2709. ISBN: 978-80-87294-52-9.
NEČAS, D.; VRBKA, M.; ŠPERKA, P.; DRUCKMÜLLER, M.; SKLÁDAL, P.; ŠTARHA, P.; KŘUPKA, I.; HARTL, M. Qualitative Analysis of Film Thickness in Rolling EHD Contact by Fluorescence Technique. In Modern Methods of Construction Design. Lecture Notes in Mechanical Engineering. Springer International Publishing, 2014. p. 615-622. ISBN: 978-3-319-05202-1. ISSN: 2195-4356.
NEČAS, D.; VRBKA, M.; YARIMITSU, S.; NAKASHIMA, K.; SAWAE, Y.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M. Frictional Properties of PVA Hydrogel. In 55th International Conference of Machine Design Departments. 2014. p. 147-152. ISBN: 978-80-01-05542-7.
2013
NEČAS, D.; VRBKA, M.; ŠPERKA, P.; DRUCKMÜLLER, M.;SKLÁDAL, P.; ŠTARHA, P.; KŘUPKA, I.; HARTL, M. Qualitative Analysis of Film Thickness in Rolling EHD Contact by Fluorescence Technique. In Book of Proceedings of 54th International Conference of Machine Design Departments. Springer, 2013. p. 513-520. ISBN: 978-80-7372-986-8.
2012
VOSYNEK, P.; NEČAS, D.; NÁVRAT, T. COMPARATIVE ANALYSIS OF DIFFERENT APPROACHS TO MODEL TRABECULAR AND COMPACT BONE IN LONG BONES. In 20th SVSFEM ANSYS Users' Group Meeting and Conference 2012. 2012. p. 300-308. ISBN: 978-80-260-2722-5.
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