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van Manen, T. (author), Ganjian, M. (author), Modaresifar, K. (author), Fratila-Apachitei, E.L. (author), Zadpoor, A.A. (author)Folding nanopatterned flat sheets into complex 3D structures enables the fabrication of meta-biomaterials that combine a rationally designed 3D architecture with nanoscale surface features. Self-folding is an attractive approach for realizing such materials. However, self-folded lattices are generally too compliant as there is an inherent...journal article 2022
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Kolken, H.M.A. (author), Callens, S.J.P. (author), Leeflang, M.A. (author), Mirzaali, Mohammad J. (author), Zadpoor, A.A. (author)The rational design of bone-substituting biomaterials is relatively complex because they should meet a long list of requirements for optimal performance. Meta-biomaterials are micro-architected materials that hold great promise for meeting those requirements as they offer a unique combination of mechanical, mass-transport, and biological...journal article 2022
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Cruz Saldivar, M. (author), Doubrovski, E.L. (author), Mirzaali, Mohammad J. (author), Zadpoor, A.A. (author)Bio-inspired composites are a great promise for mimicking the extraordinary and highly efficient properties of natural materials. Recent developments in voxel-by-voxel 3D printing have enabled extreme levels of control over the material deposition, yielding complex micro-architected materials. However, design complexity, very large degrees of...journal article 2022
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Modaresifar, K. (author), Ganjian, M. (author), Diaz Payno, P.J. (author), Klimopoulou, M. (author), Koedam, Marijke (author), van der Eerden, B.C.J. (author), Fratila-Apachitei, E.L. (author), Zadpoor, A.A. (author)Black Ti (bTi) surfaces comprising high aspect ratio nanopillars exhibit a rare combination of bactericidal and osteogenic properties, framing them as cell-instructive meta-biomaterials. Despite the existing data indicating that bTi surfaces induce osteogenic differentiation in cells, the mechanisms by which this response is regulated are not...journal article 2022
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van Kootwijk, A. (author), Moosabeiki, Vahid (author), Cruz Saldivar, M. (author), Pahlavani, H. (author), Leeflang, M.A. (author), Kazemivand Niar, S. (author), Tümer, N. (author), Mirzaali, Mohammad J. (author), Zhou, J. (author), Zadpoor, A.A. (author)The reconstruction of large mandibular defects with optimal aesthetic and functional outcomes remains a major challenge for maxillofacial surgeons. The aim of this study was to design patient-specific mandibular reconstruction implants through a semi-automated digital workflow and to assess the effects of topology optimization on the...journal article 2022
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Putra, N.E. (author), Borg, K. G.N. (author), Diaz Payno, P.J. (author), Leeflang, M.A. (author), Klimopoulou, M. (author), Taheri, P. (author), Mol, J.M.C. (author), Fratila-Apachitei, E.L. (author), Zhou, J. (author), Zadpoor, A.A. (author)Advanced additive manufacturing techniques have been recently used to tackle the two fundamental challenges of biodegradable Fe-based bone-substituting materials, namely low rate of biodegradation and insufficient bioactivity. While additively manufactured porous iron has been somewhat successful in addressing the first challenge, the limited...journal article 2022
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Dong, J. (author), Lin, P. (author), Putra, N.E. (author), Tümer, N. (author), Leeflang, M.A. (author), Huan, Z. (author), Fratila-Apachitei, E.L. (author), Chang, J. (author), Zadpoor, A.A. (author), Zhou, J. (author)The treatment of femoral nonunion with large segmental bone defect is still challenging. Although magnesium alloys have been considered potential materials for such a treatment, their application is limited by their fast degradation. Adding bioceramic particles into magnesium to form Mg-matrix composites is a promising strategy to adjust...journal article 2022
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Willemsen, Koen (author), Tryfonidou, Marianna (author), Sakkers, Ralph (author), Castelein, René M. (author), Zadpoor, A.A. (author), Seevinck, Peter (author), Weinans, Harrie (author), Meij, Björn (author), van der Wal, Bart C.H. (author)A solution for challenging hip dysplasia surgery could be a patient-specific 3D-printed shelf implant that is positioned extra-articular and restores the dysplastic acetabular rim to normal anatomical dimensions. The anatomical correction and biomechanical stability of this concept were tested in a canine model that, like humans, also suffers...journal article 2022
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Garner, E. (author), Wu, J. (author), Zadpoor, A.A. (author)Recent advances in 3D printable micro-architected materials offer unprecedented possibilities for the development of highly tailored orthopaedic implants. These devices, which are typically made from fully solid materials, significantly alter load transmission to the surrounding bone tissue, potentially leading to interface instability and bone...journal article 2022
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Diaz Payno, P.J. (author), Kalogeropoulou, Maria (author), Muntz, I.A.A. (author), Kingma, Esther (author), Kops, Nicole (author), D'Este, Matteo (author), Koenderink, G.H. (author), Fratila-Apachitei, E.L. (author), van Osch, G.J.V.M. (author), Zadpoor, A.A. (author)3D bioprinting is usually implemented on flat surfaces, posing serious limitations in the fabrication of multilayered curved constructs. 4D bioprinting, combining 3D bioprinting with time-dependent stimuli-induced transformation, enables the fabrication of shape-changing constructs. Here, a 4D biofabrication method is reported for cartilage...journal article 2022
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van Manen, T. (author), Moosabeiki, Vahid (author), Cruz Saldivar, M. (author), Mirzaali, Mohammad J. (author), Zadpoor, A.A. (author)4D printing of flat sheets that self-fold into architected 3D structures is a powerful origami-inspired approach for the fabrication of multi-functional devices and metamaterials. However, the opposite stiffness requirements for the folding process and the subsequent loadbearing of 3D structures impose an intrinsic limitation in designing...journal article 2022
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San, H. (author), Paresoglou, M. (author), Minneboo, M.B. (author), van Hengel, I.A.J. (author), Yilmaz, A. (author), Gonzalez Garcia, Y. (author), Fluit, Ad C. (author), Hagedoorn, P.L. (author), Fratila-Apachitei, E.L. (author), Apachitei, I. (author), Zadpoor, A.A. (author)Nanoparticles (NPs) have high multifunctional potential to simultaneously enhance implant osseointegration and prevent infections caused by antibiotic-resistant bacteria. Here, we present the first report on using plasma electrolytic oxidation (PEO) to incorporate different combinations of reduced graphene oxide (rGO) and silver (Ag) NPs on...journal article 2022
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Mirzaali, Mohammad J. (author), Moosabeiki, Vahid (author), Rajaai, S.M. (author), Zhou, J. (author), Zadpoor, A.A. (author)Additive manufacturing (AM, also known as 3D printing) is an advanced manufacturing technique that has enabled progress in the design and fabrication of customised or patient-specific (meta-)biomaterials and biomedical devices (e.g., implants, prosthetics, and orthotics) with complex internal microstructures and tuneable properties. In the past...review 2022
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Dimaraki, A. (author), Diaz Payno, P.J. (author), Minneboo, M.B. (author), Nouri Goushki, M. (author), Hosseini, M. (author), Kops, N. (author), Narcisi, R. (author), Mirzaali, Mohammad J. (author), van Osch, G.J.V.M. (author), Fratila-Apachitei, E.L. (author), Zadpoor, A.A. (author)The treatment of articular cartilage defects remains a significant clinical challenge. This is partially due to current tissue engineering strategies failing to recapitulate native organization. Articular cartilage is a graded tissue with three layers exhibiting different cell densities: the superficial zone having the highest density and the...journal article 2021
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van Hengel, I.A.J. (author), Tierolf, M.W.A.M. (author), Fratila-Apachitei, E.L. (author), Apachitei, I. (author), Zadpoor, A.A. (author)Patients receiving orthopedic implants are at risk of implant-associated infections (IAI). A growing number of antibiotic-resistant bacteria threaten to hamper the treatment of IAI. The focus has, therefore, shifted towards the development of implants with intrinsic antibacterial activity to prevent the occurrence of infection. The use of Ag, Cu...review 2021
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van Manen, T. (author), Janbaz, S. (author), Jansen, K.M.B. (author), Zadpoor, A.A. (author)Shape-shifting materials are a powerful tool for the fabrication of reconfigurable materials. Upon activation, not only a change in their shape but also a large shift in their material properties can be realized. As compared with the 4D printing of 2D-to-3D shape-shifting materials, the 4D printing of reconfigurable (i.e., 3D-to-3D shape...journal article 2021
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Naghavi Zadeh, S.M. (author), Alijani, F. (author), Chen, X. (author), Dayyani, Iman (author), Yasaee, Mehdi (author), Mirzaali, Mohammad J. (author), Zadpoor, A.A. (author)Mechanical metamaterials are advanced engineering materials that exhibit unusual properties that cannot be found in nature. The elastic properties (i.e., elastic modulus and Poisson's ratio) of mechanical metamaterials can be tuned by changing the geometry of their fundamental unit cells. This allows for the design of metamaterial lattices...journal article 2021
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Gijsen, F.J.H. (author), Vis, Bas (author), Barrett, Hilary E. (author), Zadpoor, A.A. (author), Verhagen, Hence J. (author), Bos, Daniel (author), van der Steen, A.F.W. (author), Akyildiz, A.C. (author)Objective: Atherosclerotic plaque rupture in carotid arteries is a major source of cerebrovascular events. Calcifications are highly prevalent in carotid plaques, but their role in plaque rupture remains poorly understood. This work studied the morphometric features of calcifications in carotid plaques and their effect on the stress...journal article 2021
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Li, Yageng (author), Shi, Jirong (author), Jahr, H. (author), Zhou, J. (author), Zadpoor, A.A. (author), Wang, Luning (author)Additively manufactured (AM) micro-architected biodegradable metals offer a unique combination of properties that are ideal for bone regeneration including biocompatibility, a fully interconnected porous structure, and the possibility to fully regenerate bony defects with native tissue upon biodegradation. Currently, the mechanical properties...review 2021
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Jahr, H. (author), Li, Y. (author), Zhou, J. (author), Zadpoor, A.A. (author), Schröder, AKi-Uwe (author)Treating large bone defects is still a clinical challenge without perfect solution, mainly due to the unavailability of suitable bone implants. Additively manufactured (AM) absorbable porous metals provide unparalleled opportunities to realize the challenging requirements for bone-mimetic implants. Firstly, multi-scale geometries of such...review 2021