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Xu, Y. (author), Šavija, B. (author)A composite can have properties much better than the components it is made of. This work proposes a three-dimensional auxetic cementitious-polymeric composite structure (3D-ACPC) which incorporates 3D printed polymeric shell with cementitious mortar. Uniaxial compression experiments are performed on the 3D-ACPC to study their quasi-static...journal article 2023
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van Kootwijk, A. (author), Jonker, B. P. (author), Wolvius, E. B. (author), Cruz Saldivar, M. (author), Leeflang, M.A. (author), Zhou, J. (author), Tümer, N. (author), Mirzaali, Mohammad J. (author), Zadpoor, A.A. (author)Objective: Mandibular reconstruction using patient-specific cage implants is a promising alternative to the vascularized free flap reconstruction for nonirradiated patients with adequate soft tissues, or for patients whose clinical condition is not conducive to microsurgical reconstruction. This study aimed to assess the biomechanical...journal article 2023
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Wan, Z. (author), Xu, Y. (author), He, S. (author), Chen, Y. (author), Xie, J. (author), Šavija, B. (author)Direct ink writing of cementitious materials can be an alternative way for creating vascular self-healing concrete by intentionally incorporating hollow channels in the cementitious matrix. In this study, a 3D-printable fibre reinforced mortar was first developed. Three groups of specimens were fabricated using direct ink writing, where the...journal article 2023
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Valera, Elias Hernandez (author), Cremades, Roger (author), van Leeuwen, Eveline (author), van Timmeren, A. (author)Cities are the core of social interactions and resource consumption in our current times. However, urban systems are still largely based on linear activities in which resources are discarded after usage. Current practices around waste reduce possibilities of circularity, mainly due to low percentages of sorting and recycling practices in high...review 2023
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Blankespoor, Maarten (author), Manzaneque Garcia, T. (author), Ghatkesar, M.K. (author)The capacity to precisely pipette femtoliter volumes of liquid enables many applications, for example, to functionalize a nanoscale surface and manipulate fluids inside a single-cell. A pressure-controlled pipetting method is the most preferred, since it enables the widest range of working liquids. However, precisely controlling femtoliter...journal article 2023
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Bierach, C.B. (author), Alberts Coelho, A.A.C. (author), Turrin, M. (author), Așut, Serdar (author), Knaack, U. (author)Under urgent sustainability targets, the building industry craves for renewable and recyclable biomaterials as cellulose is a fiber; Lignin is a plant-derived low-cost polymer with remarkable properties, yet its valorization is in its infancy. Recent studies have shown potentials to combine cellulose and lignin into a renewable bio-based...journal article 2023
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Wan, Z. (author), Zhang, Y. (author), Xu, Y. (author), Šavija, B. (author)Additively manufactured vascular networks have great potential for use in autonomous self-healing of cementitious composites as they potentially allow multiple healing events to take place. However, the existence of a vascular tube wall may impede with the healing efficiency if it does not rupture timely to release the healing agent. The...journal article 2023
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Setaki, F. (author), Tian, F. (author), Turrin, M. (author), Tenpierik, M.J. (author), Nijs, L. (author), van Timmeren, A. (author)This paper discusses a novel, compact sound absorption solution with high performance at various frequencies, including low frequencies, achieved through the effective use of Computational Design and Additive Manufacturing (AM). Sound absorption is widely applied for reducing noise and improving room acoustics; however, it is often constrained...journal article 2023
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Oh, J.J. (author), Ammu, S.K. (author), Vriend-Harwig, V.D. (author), Kieffer, R.Y. (author), Dr. Kleiner, F.K. (author), Balasubramanian, S. (author), Karana, E. (author), Masania, K. (author), Aubin-Tam, M.E. (author)Engineered living materials (ELMs) are a novel class of functional materials that typically feature spatial confinement of living components within an inert polymer matrix to recreate biological functions. Understanding the growth and spatial configuration of cellular populations within a matrix is crucial to predicting and improving their...journal article 2023
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Xu, Y. (author), Šavija, B. (author)Auxetic cementitious composites (ACCs) with improved mechanical properties are created, by casting 3D printed polymeric auxetic reinforcement structures inside cementitious mortar. Four types of ACCs incorporating reinforcement with different auxetic mechanisms were prepared: “re-entrant” (RE), “rotating-square” (RS), “chiral” (CR) and ...journal article 2023
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van Oudheusden, A.A. (author), Bolanos Arriola, J. (author), Faludi, Jeremy (author), Flipsen, Bas (author), Balkenende, R. (author)The availability and storage of spare parts are the main barriers to product repair. One possibility would be to 3D print spare parts, which would also enable the repair of products not intended to be repaired. Besides manufacturers, 3D printing spare parts is an interesting option for self-repair by consumers. However, the digitisation of...journal article 2023
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Ozdemir, Mehmet (author), Doubrovski, E.L. (author)We propose a new approach to obtain local property variations in 3D-printed objects using a single-nozzle 3D printer and one filament. We use foaming filaments which expand at different rates due to different temperatures. We present an approach to harness this varying expansion by including parameters of the 3D printing process in the design...conference paper 2023
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Lesueur, M. (author), Zhang, X. (author), Poulet, Thomas (author), Veveakis, Manolis (author)The seminal work of Gurson (J Eng Mater Technol 99:2–5, 1977) on a simplified pore structure, a single spherical pore, first provided a theoretical relationship between the yield stress and the porosity. This contribution extends the approach to determine the macroscopic yield of a porous material by taking explicitly into account its...conference paper 2023
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Khatami, Mohamad (author), Doniavi, Ali (author), Abazari, Amir Musa (author), Fotouhi, M. (author)This paper presents a new design strategy to improve the flexibility and strength-to-weight ratio of polymeric stents. The proposed design introduces a variable-thickness (VT) stent that outperforms conventional polymeric stents with constant thickness (CT). While polymeric stents offer benefits like flexibility and bioabsorption, their...journal article 2023
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Jovanova, J. (author), Var, S.C.S. (author)Underwater robot tasks pose many challenges for conventional robotic systems. The current rigid robots are limited in their adaptability to the environment and the objects to be manipulated. Soft grasping of objects offers advantages due to the flexibility when dealing with, for example, living organisms, random shaped objects, and coral...conference paper 2023
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Shikh Anuar, Fadhilah (author), Mustapha, Khairul Azhar (author), Sa'at, Fatimah Al Zahrah Mohd (author), Zini, Nurul Hilwa Mohd (author), Tokit, Ernie Mat (author), Narasimmanaidu, Satishwara Rao (author), Hooman, K. (author)In this study, the microstructure of open-cell metal foam was generated and reconstructed, to produce a new generation of open-cell foam, which is called 3D printed open-cell foam. At the current stage of research, nylon powder and plastic acid are utilized as the materials for two different 3D printing technologies: Selective Laser Sintering...journal article 2023
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Fugazzola, Maria C. (author), Golafshan, Nasim (author), van Aken, Joris A. (author), Plomp, S. (author), De Grauw, Janny (author), van Buul, Ward (author), Hermsen, Gied (author), Weinans, Harrie (author), Castilho, Miguel (author), van Weeren, René (author), Malda, Jos (author)Summary: The objective of this study was to evaluate a non-resorbable implant for the focal repair of osteochondral defects. Enhanced adherence of repair cartilage overgrowing the implants was the secondary goal and was tested by introducing porosities on the articular surface of the implant. This study evaluated four versions of the...journal article 2023
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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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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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Bolanos Arriola, J. (author), van Oudheusden, A.A. (author), Flipsen, Bas (author), Faludi, Jeremy (author)This guide takes the reader through the 3D Printing for Repair (3DP4R) process. It consists of guidelines and tools to create a 3D printable version of spare parts needed for a product repair. 3D printing a spare part is more than just printing the original part. Instead, it is an iterative process in which the part is analysed, redesigned,...book 2022