Davide Ruffoni
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View article: Cement lines are stiffer and harder than bone but exhibit different mineral–mechanics relationships due to thicker and shorter mineral particles
Cement lines are stiffer and harder than bone but exhibit different mineral–mechanics relationships due to thicker and shorter mineral particles Open
The remarkable mechanical performance of bone arises from its complex hierarchical structure and from the presence of numerous internal interfaces joining the different components. Formed during bone remodeling, the cement line (CL) is a t…
View article: The mineralization of osteonal cement line depends on where the osteon is formed
The mineralization of osteonal cement line depends on where the osteon is formed Open
The cement line (CL) is a thin layer, 1-3 μm in width, separating secondary osteons from interstitial bone and other osteons. Despite the possible role for bone quality, the CL is still one of the least understood features of bone. This st…
View article: Understanding the structure and mechanics of the sheep calcaneal enthesis: a relevant animal model for tissue engineering applications
Understanding the structure and mechanics of the sheep calcaneal enthesis: a relevant animal model for tissue engineering applications Open
Tendon/enthesis injuries are a worldwide clinical problem. Along the enthesis, collagen fibrils show a progressive loss of anisotropy and an increase in mineralization reaching the bone. This causes gradients of mechanical properties. The …
View article: The mineralization of osteonal cement line depends on where the osteon is formed
The mineralization of osteonal cement line depends on where the osteon is formed Open
The cement line (CL) is a thin layer separating secondary osteons from interstitial bone and other osteons. It is assumed to play a significant role in bone fracture resistance, owing to its ability to deflect or arrest microcracks. Despit…
View article: A Molecular‐Scale Understanding of Misorientation Toughening in Corals and Seashells (Adv. Mater. 28/2023)
A Molecular‐Scale Understanding of Misorientation Toughening in Corals and Seashells (Adv. Mater. 28/2023) Open
Crystal Misorientation In article number 2300373, Andrew J. Lew, Davide Ruffoni, Markus J. Buehler, Pupa U. P. A. Gilbert, and co-workers reveal that the toughness of polycrystalline seashells and coral skeletons is increased by small miso…
View article: Front Cover: Design strategies of the mantis shrimp spike: How the crustacean cuticle became a remarkable biological harpoon
Front Cover: Design strategies of the mantis shrimp spike: How the crustacean cuticle became a remarkable biological harpoon Open
The arthropod cuticle is not only one of the most remarkable and versatile biological material but also a wonderful source of inspiration for developing new man-made composites. In this cover article ntls.20220060, Yann Delaunois and colle…
View article: Characterization of biphasic architectured media towards ultrasound monitoring applications
Characterization of biphasic architectured media towards ultrasound monitoring applications Open
International audience
View article: Design strategies of the mantis shrimp spike: How the crustacean cuticle became a remarkable biological harpoon
Design strategies of the mantis shrimp spike: How the crustacean cuticle became a remarkable biological harpoon Open
Spearing mantis shrimps are aggressive crustaceans using specialized appendages with sharp spikes to capture fishes with fast movement. Each spike is a biological tool that has to combine high toughness, as required by the initial impact w…
View article: A Molecular‐Scale Understanding of Misorientation Toughening in Corals and Seashells
A Molecular‐Scale Understanding of Misorientation Toughening in Corals and Seashells Open
Biominerals are organic–mineral composites formed by living organisms. They are the hardest and toughest tissues in those organisms, are often polycrystalline, and their mesostructure (which includes nano‐ and microscale crystallite size, …
View article: Rational positioning of 3D printed micro-bricks to realize high-fidelity, multi-functional soft-hard interfaces
Rational positioning of 3D printed micro-bricks to realize high-fidelity, multi-functional soft-hard interfaces Open
A bstract Living organisms have developed design principles, such as functional gradients (FGs), to interface hard materials with soft ones ( e.g ., bone and tendon). Mimicking such design principles can address the challenges faced when d…
View article: Design Strategies of the Mantis Shrimp Spike: How the Crustacean Cuticle Became a Remarkable Biological Harpoon?
Design Strategies of the Mantis Shrimp Spike: How the Crustacean Cuticle Became a Remarkable Biological Harpoon? Open
Spearing mantis shrimps are aggressive crustaceans using specialized appendages with sharp spikes to capture fishes with a fast movement. Each spike is a biological tool that have to combine high toughness, as required by the initial impac…
View article: Ultrasound characterization of the viscoelastic properties of additively manufactured photopolymer materials
Ultrasound characterization of the viscoelastic properties of additively manufactured photopolymer materials Open
Photopolymer-based additive manufacturing has received increasing attention in the field of acoustics over the past decade, specifically towards the design of tissue-mimicking phantoms and passive components for ultrasound imaging and ther…
View article: Convergent, slightly misoriented crystals toughen corals and seashells
Convergent, slightly misoriented crystals toughen corals and seashells Open
The hardest and toughest tissues formed by living organisms are organic-mineral composites termed biominerals 1,2. When they are crystalline, their mesostructure includes the nano- and micro-scale crystallite size, shape, arrangement, and …
View article: Editorial: Design and Fabrication Tools for Advanced Materials: Applications in Biomechanics and Mechanobiology
Editorial: Design and Fabrication Tools for Advanced Materials: Applications in Biomechanics and Mechanobiology Open
EDITORIAL article Front. Mater., 08 June 2022Sec. Mechanics of Materials https://doi.org/10.3389/fmats.2022.945532
View article: Ultrasound characterization of bioinspired functionally graded soft-to-hard composites: Experiment and modeling
Ultrasound characterization of bioinspired functionally graded soft-to-hard composites: Experiment and modeling Open
Functional grading is a distinctive feature adopted by nature to improve the transition between tissues that present a strong mismatch in mechanical properties, a relevant example being the tendon-to-bone attachment. Recent progress in mul…
View article: Facile construction of functional poly(monothiocarbonate) copolymers under mild operating conditions
Facile construction of functional poly(monothiocarbonate) copolymers under mild operating conditions Open
Functional poly(monothiocarbonate)-based copolymers are easily prepared by terpolymerization of a CO 2 -sourced bis(cyclic carbonate) with dithiols and diamines under ambient conditions.
View article: Local anisotropy in mineralized fibrocartilage and subchondral bone beneath the tendon-bone interface
Local anisotropy in mineralized fibrocartilage and subchondral bone beneath the tendon-bone interface Open
The enthesis allows the insertion of tendon into bone thanks to several remarkable strategies. This complex and clinically relevant location often features a thin layer of fibrocartilage sandwiched between tendon and bone to cope with a hi…
View article: Joining soft tissues to bone: Insights from modeling and simulations
Joining soft tissues to bone: Insights from modeling and simulations Open
Entheses are complex multi-tissue regions of the musculoskeletal system serving the challenging task of connecting highly dissimilar materials such as the compliant tendon to the much stiffer bone, over a very small region. The first aim o…
View article: Local adaptation of bone micro-structure and canal network to tendon insertion investigated by image-based micro-FE simulations
Local adaptation of bone micro-structure and canal network to tendon insertion investigated by image-based micro-FE simulations Open
Mean roughness (root mean square P q ): 65% higher at the interface between unmineralized (UFC) and mineralized
View article: Wave propagation across the tendon-to-bone interphase modeled as an equivalent interface with specific surface properties
Wave propagation across the tendon-to-bone interphase modeled as an equivalent interface with specific surface properties Open
International audience
View article: Microstructural and micromechanical investigation of the tendon-bone attachment
Microstructural and micromechanical investigation of the tendon-bone attachment Open
We observed an evident bony tuberosity connecting the Achilles tendon with the plantar fascia ligament. We performed a spatially resolved analysis of trabecular microstructure, suggesting that trabecular network was not significantly influ…
View article: Mechanical regulation of bone formation and resorption around implants in a mouse model of osteopenic bone
Mechanical regulation of bone formation and resorption around implants in a mouse model of osteopenic bone Open
Although mechanical stimulation is considered a promising approach to accelerate implant integration, our understanding of load-driven bone formation and resorption around implants is still limited. This lack of knowledge may delay the dev…