Searched for: subject%3A%22TU%255C%252BDelft%22
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Moosabeiki, Vahid (author), Yarali, E. (author), Ghalayaniesfahani, A. (author), Callens, S.J.P. (author), van Manen, T. (author), Accardo, A. (author), Ghodrat, S. (author), Bico, José (author), Habibi, Mehdi (author), Mirzaali, Mohammad J. (author), Zadpoor, A.A. (author)
Emerging 4D printing techniques have enabled the realization of smart materials whose shape or properties can change with time. Two important phenomena play important roles in the 4D printing of shape memory polymeric materials. First, the anisotropic deformation of the printed filaments due to residual stresses can be harnessed to create out...
journal article 2024
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Callens, S.J.P. (author), Fan, D. (author), van Hengel, I.A.J. (author), Minneboo, M.B. (author), Diaz Payno, P.J. (author), Stevens, Molly M. (author), Fratila-Apachitei, E.L. (author), Zadpoor, A.A. (author)
Individual cells and multicellular systems respond to cell-scale curvatures in their environments, guiding migration, orientation, and tissue formation. However, it remains largely unclear how cells collectively explore and pattern complex landscapes with curvature gradients across the Euclidean and non-Euclidean spectra. Here, we show that...
journal article 2023
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de Jong, P.H. (author), Schwab, A.L. (author), Mirzaali, Mohammad J. (author), Zadpoor, A.A. (author)
Shape-morphing structures have the ability to adapt to various target shapes, offering significant advantages for many applications. However, predicting their behavior presents challenges. Here, we present a method to assess the shape-matching behavior of shape-morphing structures using a multibody systems approach wherein the structure is...
journal article 2023
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Cruz Saldivar, M. (author), Tay, E.T.W.S. (author), Isaakidou, A. (author), Moosabeiki, Vahid (author), Fratila-Apachitei, E.L. (author), Doubrovski, E.L. (author), Mirzaali, Mohammad J. (author), Zadpoor, A.A. (author)
Durable interfacing of hard and soft materials is a major design challenge caused by the ensuing stress concentrations. In nature, soft-hard interfaces exhibit remarkable mechanical performance, with failures rarely happening at the interface. Here, we mimic the strategies observed in nature to design efficient soft-hard interfaces. We base...
journal article 2023
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Mirzaali, Mohammad J. (author), Pahlavani, H. (author), Yarali, E. (author), Zadpoor, A.A. (author)
Non-affine deformations enable mechanical metamaterials to achieve their unusual properties while imposing implications for their structural integrity. The presence of multiple phases with different mechanical properties results in additional non-affinity of the deformations, a phenomenon that has never been studied before in the area of...
journal article 2020
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Ganjian, M. (author), Modaresifar, K. (author), Zhang, H. (author), Hagedoorn, P.L. (author), Fratila-Apachitei, E.L. (author), Zadpoor, A.A. (author)
One of the major problems with the bone implant surfaces after surgery is the competition of host and bacterial cells to adhere to the implant surfaces. To keep the implants safe against implant-associated infections, the implant surface may be decorated with bactericidal nanostructures. Therefore, fabrication of nanostructures on...
journal article 2019
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Tümer, N. (author), Kok, A.C. (author), Vos, F.M. (author), Streekstra, Geert J. (author), Askeland, Christian (author), Tuijthof, G.J.M. (author), Zadpoor, A.A. (author)
A rigid surface–volume registration scheme is presented in this study to register computed tomography (CT) and free-hand tracked ultrasound (US) images of the talocrural joint. Prior to registration, bone surfaces expected to be visible in US are extracted from the CT volume and bone contours in 2D US data are enhanced based on monogenic signal...
journal article 2018
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Mirzaali, Mohammad J. (author), Janbaz, S. (author), Strano, M. (author), Vergani, L. (author), Zadpoor, A.A. (author)
Architectured materials with rationally designed geometries could be used to create mechanical metamaterials with unprecedented or rare properties and functionalities. Here, we introduce "shape-matching" metamaterials where the geometry of cellular structures comprising auxetic and conventional unit cells is designed so as to achieve a pre...
journal article 2018
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Bobbert, F.S.L. (author), Janbaz, S. (author), Zadpoor, A.A. (author)
Meta-biomaterials exhibit unprecedented or rare combinations of properties not usually found in nature. Such unusual mechanical, mass transport, and biological properties could be used to develop novel categories of orthopedic implants with superior performance, otherwise known as meta-implants. Here, we use bi-stable elements working on the...
journal article 2018
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Mirzaali, Mohammad J. (author), Edens, M. E. (author), de la Nava, A. Herranz (author), Janbaz, S. (author), Vena, P. (author), Doubrovski, E.L. (author), Zadpoor, A.A. (author)
Biomimetic composites are usually made by combining hard and soft phases using, for example, multi-material additive manufacturing (AM). Like other fabrication methods, AM techniques are limited by the resolution of the device, hence, setting a minimum length scale. The effects of this length scale on the performance of hard-soft composites...
journal article 2018
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van Hengel, I.A.J. (author), Riool, Martijn (author), Fratila-Apachitei, E.L. (author), Witte-Bouma, Janneke (author), Farrell, Eric (author), Zadpoor, A.A. (author), Zaat, Sebastian A.J. (author), Apachitei, I. (author)
Additively manufactured Ti-6Al-4V implants were biofunctionalized using plasma electrolytic oxidation. At various time points during this process scanning electron microscopy imaging was performed to analyze the surface morphology (van Hengel et al., 2017) [1]. This data shows the changes in surface morphology during plasma electrolytic...
journal article 2017
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Kolken, H.M.A. (author), Zadpoor, A.A. (author)
The surge of interest in so-called "designer materials" during the last few years together with recent advances in additive manufacturing (3D printing) techniques that enable fabrication of materials with arbitrarily complex nano/micro-architecture have attracted increasing attention to the concept of mechanical metamaterials. Owing to their...
journal article 2017
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Mirzaali, Mohammad J. (author), Habibi, M. (author), Janbaz, S. (author), Vergani, L. (author), Zadpoor, A.A. (author)
Crumpled-based materials are relatively easy to fabricate and show robust mechanical properties for practical applications, including meta-biomaterials design aimed for improved tissue regeneration. For such requests, however, the structure needs to be porous. We introduce a crumpled holey thin sheet as a robust bio-metamaterial and measure...
journal article 2017
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Janbaz, S. (author), Noordzij, N. (author), Widyaratih, Dwisetya Safirna (author), Hagen, C.W. (author), Fratila-Apachitei, E.L. (author), Zadpoor, A.A. (author)
Lattice structures are used in the design of metamaterials to achieve unusual physical, mechanical, or biological properties. The properties of such metamaterials result from the topology of the lattice structures, which are usually three-dimensionally (3D) printed. To incorporate advanced functionalities into metamaterials, the surface of the...
journal article 2017
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Hedayati, R. (author), Sadighi, M. (author), Mohammadi-Aghdam, M (author), Zadpoor, A.A. (author)
Honeycombs resemble the structure of a number of natural and biological materials such as cancellous bone, wood, and cork. Thick honeycomb could be also used for energy absorption applications. Moreover, studying the mechanical behavior of honeycombs under in-plane loading could help understanding the mechanical behavior of more complex 3D...
journal article 2016
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Sarkalkan, N. (author), Loeve, A.J. (author), Van Dongen, K.W.A. (author), Tuijthof, G.J.M. (author), Zadpoor, A.A. (author)
(Osteo)chondral defects (OCDs) in the ankle are currently diagnosed with modalities that are not convenient to use in long-term follow-ups. Ultrasound (US) imaging, which is a cost-effective and non-invasive alternative, has limited ability to discriminate OCDs. We aim to develop a new diagnostic technique based on US wave propagation through...
journal article 2015
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Zadpoor, A.A. (author)
Investigation of the mechanical behavior of biological tissues and biomaterials has been an active area of research for several decades. However, in recent years, the enthusiasm in understanding the mechanical behavior of biological tissues and biomaterials has increased significantly due to the development of novel biomaterials for new fields...
journal article 2015
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Ahmadi, S.M. (author), Yavari, S.A. (author), Wauthle, R. (author), Pouran, B. (author), Schrooten, J. (author), Weinans, H. (author), Zadpoor, A.A. (author)
It is known that the mechanical properties of bone-mimicking porous biomaterials are a function of the morphological properties of the porous structure, including the configuration and size of the repeating unit cell from which they are made. However, the literature on this topic is limited, primarily because of the challenge in fabricating...
journal article 2015
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Bsat, S. (author), Yavari, S. (author), Munsch, M. (author), Valstar, E.R. (author), Zadpoor, A.A. (author)
Advanced additive manufacturing techniques such as electron beam melting (EBM), can produce highly porous structures that resemble the mechanical properties and structure of native bone. However, for orthopaedic applications, such as joint prostheses or bone substitution, the surface must also be bio-functionalized to promote bone growth. In the...
journal article 2015
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