Search Results - "Fabritius, Helge Otto"

Influence of Structural Principles on the Mechanics of a Biological Fiber-Based Composite Material with Hierarchical Organization: The Exoskeleton of the Lobster Homarus americanus by Fabritius, Helge-Otto, Sachs, Christoph, Triguero, Patricia Romano, Raabe, Dierk

“…The cuticle of the lobster Homarus americanus is a nanocomposite, such as most structural biological materials. It consists of a matrix of chitin‐protein…”
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Revealing the Design Principles of High-Performance Biological Composites Using Ab initio and Multiscale Simulations: The Example of Lobster Cuticle by Nikolov, Svetoslav, Petrov, Michal, Lymperakis, Liverios, Friák, Martin, Sachs, Christoph, Fabritius, Helge-Otto, Raabe, Dierk, Neugebauer, Jörg

“…Natural materials are hierarchically structured nanocomposites. A bottom‐up multiscale approach to model the mechanical response of the chitin‐based…”
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The edge regions in tergites of the desert isopod Hemilepistus reaumuri: the transition from hard cuticle to flexible arthrodial membrane by Ernst, Franziska, Fabritius, Helge-Otto, Griesshaber, Erika, Schmahl, Wolfgang W., Ziegler, Andreas

“…The arthrodial membrane is a thin and flexible type of cuticle that inserts at the edge regions of neighbouring rigid skeletal elements creating a flexible…”
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Overview of Calcium Phosphates used in Biomimetic Oral Care by Meyer, Frederic, Amaechi, Bennett T, Fabritius, Helge-Otto, Enax, Joachim

“…The use of biomimetic agents is an emerging field in modern oral care. Promising biomimetic substances for such applications are calcium phosphates, because…”
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Extreme Optical Properties Tuned Through Phase Substitution in a Structurally Optimized Biological Photonic Polycrystal by Wu, Xia, Erbe, Andreas, Raabe, Dierk, Fabritius, Helge-Otto

“…Biological photonic structures evolved by insects provide inspiring examples for the design and fabrication of synthetic photonic crystals. The small scales…”
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Ultrastructural organization and micromechanical properties of shark tooth enameloid by Enax, Joachim, Janus, Anna M., Raabe, Dierk, Epple, Matthias, Fabritius, Helge-Otto

“…[Display omitted] The outer part of shark teeth is formed by the hard and mineral-rich enameloid that has excellent mechanical properties, which makes it a…”
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Modes of Action and Clinical Efficacy of Particulate Hydroxyapatite in Preventive Oral Health Care − State of the Art by Enax, Joachim, Fabritius, Helge-Otto, Fabritius-Vilpoux, Kathia, Amaechi, Bennett T., Meyer, Frederic

“…Background: Particulate Hydroxyapatite (HAP; Ca 5 (PO 4 ) 3 (OH)) is being increasingly used as multifunctional active ingredient in oral care. Due to its high…”
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Hydroxyapatite as Remineralization Agent for Children's Dental Care by Meyer, Frederic, Enax, Joachim, Amaechi, Bennett Tochukwu, Limeback, Hardy, Fabritius, Helge-Otto, Ganss, Bernhard, Pawinska, Malgorzata, Paszynska, Elzbieta

“…Children are prone to develop dental caries. This is supported by epidemiological data confirming early childhood caries (ECC) as a highly prevalent disease…”
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Toothpaste Abrasion and Abrasive Particle Content: Correlating High-Resolution Profilometric Analysis with Relative Dentin Abrasivity (RDA) by Enax, Joachim, Meyer, Frederic, Schulze Zur Wiesche, Erik, Fuhrmann, Ines Christin, Fabritius, Helge-Otto

“…In this in vitro study, the influence of the concentration of abrasive particles on the abrasivity of toothpastes was investigated using laser scan…”
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Polarization Conversion Effect in Biological and Synthetic Photonic Diamond Structures by Wu, Xia, Rodríguez‐Gallegos, Fernando L., Heep, Marie‐Christin, Schwind, Bertram, Li, Guixin, Fabritius, Helge‐Otto, Freymann, Georg, Förstner, Jens

“…Polarization of light is essential for some living organisms and many optical applications. Here, an orientation dependent polarization conversion effect is…”
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Functional adaptation of crustacean exoskeletal elements through structural and compositional diversity: a combined experimental and theoretical study by Fabritius, Helge-Otto, Ziegler, Andreas, Friák, Martin, Nikolov, Svetoslav, Huber, Julia, Seidl, Bastian H M, Ruangchai, Sukhum, Alagboso, Francisca I, Karsten, Simone, Lu, Jin, Janus, Anna M, Petrov, Michal, Zhu, Li-Fang, Hemzalová, Pavlína, Hild, Sabine, Raabe, Dierk, Neugebauer, Jörg

“…The crustacean cuticle is a composite material that covers the whole animal and forms the continuous exoskeleton. Nano-fibers composed of chitin and protein…”
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Functional adaptations in the tergite cuticle of the desert isopod Hemilepistus reaumuri (Milne-Edwards, 1840) by Ernst, Franziska, Fabritius, Helge-Otto, Griesshaber, Erika, Reisecker, Christian, Neues, Frank, Epple, Matthias, Schmahl, Wolfgang W., Hild, Sabine, Ziegler, Andreas

“…[Display omitted] •The anterior tergite cuticle is adapted to the burrow entrance guarding behaviour.•The tergite epicuticle is not specifically adapted to the…”
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Characterization of crocodile teeth: Correlation of composition, microstructure, and hardness by Enax, Joachim, Fabritius, Helge-Otto, Rack, Alexander, Prymak, Oleg, Raabe, Dierk, Epple, Matthias

“…Structure and composition of teeth of the saltwater crocodile Crocodylus porosus were characterized by several high-resolution analytical techniques. X-ray…”
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Function-related adaptations of ultrastructure, mineral phase distribution and mechanical properties in the incisive cuticle of mandibles of Porcellio scaber Latreille, 1804 by Huber, Julia, Fabritius, Helge-Otto, Griesshaber, Erika, Ziegler, Andreas

“…In terrestrial isopods the mandibles consist of a corpus carrying strong muscle tissue, and a pars incisiva (PI) that cuts dry leaves into smaller ingestible…”
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Natural near field coupled leaky-mode resonant anti-reflection structures: the setae of Cataglyphis bombycina by Schwind, Bertram, Wu, Xia, Tiemann, Michael, Fabritius, Helge-Otto

“…Leaky mode resonances of the setae of Cataglyphis bombycina are found to enhance the thermal emission of the animals by near field coupling to the chitinous…”
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The arthropod cuticle – A never-ending endeavor by Fabritius, Helge-Otto, Moussian, Bernard

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Tailored disorder in calcite organization in tergite cuticle of the supralittoral isopod Tylos europaeus Arcangeli, 1938 by Seidl, Bastian H.M., Griesshaber, Erika, Fabritius, Helge-Otto, Reisecker, Christian, Hild, Sabine, Taiti, Stefano, Schmahl, Wolfgang W., Ziegler, Andreas

“…[Display omitted] •At the tergite edges the distal exocuticle is replaced by epicuticle.•Stiffness and hardness at the edge is lower than in the dorsal…”
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From insect scales to sensor design: modelling the mechanochromic properties of bicontinuous cubic structures by Wu, Xia, Ma, Duancheng, Eisenlohr, Philip, Raabe, Dierk, Fabritius, Helge-Otto

“…Many of the three-dimensional photonic crystals occurring in the scales of insects have bicontinuous cubic structures. Their optical properties have been…”
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Composites of fluoroapatite and methylmethacrylate-based polymers (PMMA) for biomimetic tooth replacement by Lübke, Alwina, Enax, Joachim, Wey, Karolin, Fabritius, Helge-Otto, Raabe, Dierk, Epple, Matthias

“…Synthetic composite materials that mimic the structure and composition of mammalian tooth enamel were prepared by mixing fluoroapatite rods (diameter 2-3 μm,…”
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Photonic Crystals: Extreme Optical Properties Tuned Through Phase Substitution in a Structurally Optimized Biological Photonic Polycrystal (Adv. Funct. Mater. 29/2013) by Wu, Xia, Erbe, Andreas, Raabe, Dierk, Fabritius, Helge-Otto

“…The beetle Entimus imperialis forms photonic crystals with a bicontinuous cubic structure of the diamond type in cuticular scales that show brilliant colors…”
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