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Thematische Bibliographien / Nature-inspired materials

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Dissertationen
Bücher
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Auswahl der wissenschaftlichen Literatur zum Thema „Nature-inspired materials“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 17. Februar 2022

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Zeitschriftenartikel zum Thema "Nature-inspired materials"

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ISU, Norifumi. „Nature Inspired Materials“. Journal of the Japan Society for Precision Engineering 81, Nr. 5 (2015): 396–400. http://dx.doi.org/10.2493/jjspe.81.396.

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Sun, Taolei, Guangyan Qing, Baolian Su und Lei Jiang. „Functional biointerface materials inspired from nature“. Chemical Society Reviews 40, Nr. 5 (2011): 2909. http://dx.doi.org/10.1039/c0cs00124d.

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Zhang, Di, Wang Zhang, Jiajun Gu, Shenmin Zhu, Huilan Su, Qinglei Liu, Tongxiang Fan, Jian Ding und Qixin Guo. „Bio-Inspired Functional Materials Templated From Nature Materials“. KONA Powder and Particle Journal 28 (2010): 116–30. http://dx.doi.org/10.14356/kona.2010011.

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4

Zhu, Hai, Zhiguang Guo und Weimin Liu. „Biomimetic water-collecting materials inspired by nature“. Chemical Communications 52, Nr. 20 (2016): 3863–79. http://dx.doi.org/10.1039/c5cc09867j.

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Here, the water-collecting materials inspired by the three typical and widely-researched creatures (cactus, spider, desert beetle) are first introduced. Then, another eight animals and plants (butterfly, shore birds, wheat awns, green bristlegrass bristle, Cotula fallax plant, Namib grass, green tree frogs and Australian desert lizards) that are rarely reported are followed to be complemented.

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Estrada, Susana, und Alex Ossa. „Nature‐Inspired Protecto‐Flexible Impact‐Tolerant Materials“. Advanced Engineering Materials 22, Nr. 8 (14.05.2020): 2000006. http://dx.doi.org/10.1002/adem.202000006.

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Zhang, Di, Qinglei Liu, Wang Zhang, Shenming Zhu, Huilan Su, Jiajun Gu, Tongxiang Fan, Jian Ding und Qixin Guo. „Bio-inspired Functional Materials Converted from Nature Species“. Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2011, CICMT (01.09.2011): 000146–51. http://dx.doi.org/10.4071/cicmt-2011-keynote4.

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Biological materials naturally display an astonishing variety of sophisticated nanostructures that are difficult to obtain even with the most technologically advanced synthetic methodologies. Inspired from nature materials with hierarchical structures, many functional materials are developed based on the templating synthesis method. This review will introduce the way to fabricate novel functional materials based on nature bio-structures with a great diversity of morphologies, in State Key Lab of Metal Matrix Composites, Shanghai Jiao Tong University in near five years. We focused on replicating the morphological characteristics and the functionality of a biological species (e.g. wood, agriculture castoff, butterfly wings). We change their original components into our desired materials with original morphologies faithfully kept. Properties of the obtained materials are studied in details. Based on these results, we discuss the possibility of using these materials in photonic control, solar cells, electromagnetic shielding, energy harvesting, and gas sensitive devices, et al. In addition, the fabrication method could be applied to other nature substrate template and inorganic systems that could eventually lead to the production of optical, magnetic, or electric devices or components as building blocks for nanoelectronic, magnetic, or photonic integrated systems. These bio-inspired functional materials with improved performance characteristics are becoming increasing important, which will have great values on the development on structural function materials in the near future.

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Liu, Yaqing, Ke He, Geng Chen, Wan Ru Leow und Xiaodong Chen. „Nature-Inspired Structural Materials for Flexible Electronic Devices“. Chemical Reviews 117, Nr. 20 (09.10.2017): 12893–941. http://dx.doi.org/10.1021/acs.chemrev.7b00291.

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Sun, Taolei, Guangyan Qing, Baolian Su und Lei Jiang. „ChemInform Abstract: Functional Biointerface Materials Inspired from Nature“. ChemInform 42, Nr. 35 (04.08.2011): no. http://dx.doi.org/10.1002/chin.201135271.

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Wang, Hua, Yun Yang und Lin Guo. „Nature-Inspired Electrochemical Energy-Storage Materials and Devices“. Advanced Energy Materials 7, Nr. 5 (09.12.2016): 1601709. http://dx.doi.org/10.1002/aenm.201601709.

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Bley, Thomas. „Book review:Bio-Nanomaterials - Designing materials inspired by nature“. Biotechnology Journal 9, Nr. 9 (September 2014): 1103. http://dx.doi.org/10.1002/biot.201400450.

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Dissertationen zum Thema "Nature-inspired materials"

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Johnson, Joseph Casey. „Peptidic Materials: Nature Inspired Mechanical Enhancement“. Case Western Reserve University School of Graduate Studies / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=case1403197488.

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Jones, Celina. „Textile materials inspired by structural colour in nature“. Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/textile-materials-inspired-by-structural-colour-in-nature(47c02808-18b6-4c8d-adb3-09beb18091e4).html.

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This research explores the concept of mimicking structural colour in nature as an alternative to traditional textile coloration techniques. In particular, the research focuses on certain species of buttery and beetle. Structural colours originate from the physical interaction of light with nanoscale structures. Firstly, this study explores the use of thin, multilayer films to aid designing and producing bi-component interference fibres, exhibiting structural colour similar to that of the Morpho buttery. In the textiles industry, a bicomponent fibre called the Morphotex® fibre has been produced. This fibre replicates the structure observed on the surface of the wings of the Morpho buttery, responsible for achieving the distinctive iridescent blue. The project aims to replicate and extend on previously implemented biomimetic structures on textiles. Secondly, this project investigates ways in which Cholesteric Liquid Crystals(CLC) can be printed onto a range of textile substrates using k-bar coating and inkjet printing methods, to exhibit structural colour similar to that of the Chrysina Gloriosa beetle. CLCs produce a wide colour gamut and provide angular colour effects that would be a welcome addition to the 'toolbox' of a textile designer. In this study, solvent based ink formulations containing CLCs are applied to pre-treated textile substrates, using a piezoelectric inkjet printer. Different ink formulations, with varying concentrations of nematic liquid crystal and chiral dopant, are investigated to create a range of coloured films. This research determines whether fibre content, fabric structure, thread density, film thickness and surface treatments have an impact on the colour perceived by the observer.

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Gurera, Dev. „Lessons from Nature and Bioinspired Fabrication: Mosquito Bite and Lotus Leaf Inspired Superliquiphobic Leather“. The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1511962660965442.

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Sánchez, Ferrero Aitor. „Biomimetic hydrogels for in situ bone tissue engineering : nature-inspired crosslinking methods as a tool to tune scaffold physical properties“. Doctoral thesis, Universitat Politècnica de Catalunya, 2015. http://hdl.handle.net/10803/373909.

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The global incidence of bone fractures, and subsequently that of non-healing ones, is expected to rise in the coming decades, mostly due to an increased risk of age-related conditions. Currently, the biomaterials field is moving towards the design of scaffolds mimicking the cell microenvironment to guide stem cells differentiation and recapitulate the development of target tissues. Biomimicry is a wide concept and several approaches have been adopted to produce cellinstructive scaffolds. Herein, we have explored the use of citric acid and lysyl oxidase, both of them related to bone nanostructure and mechanical performance, to develop scaffolds resembling the extracellular matrix of developing bone. First, elastin-like recombinamers (ELRs) hydrogels were achieved through a one-step chemical crosslinking reaction with citric acid, a molecule currently considered to be essential for the proper performance of bone tissue. By systematically studying the crosslinking reaction and its contribution to hydrogel properties, we were able to control the architecture and stiffness of citric acid-crosslinked hydrogels while preserving the integrity of adhesion sequences in ELRs. Interestingly, the use of citric acid conferred so-produced hydrogels the ability to nucleate calcium phosphate. Mechanically-tailored citric acid-crosslinked hydrogels were shown to be able to support the growth of human mesenchymal stem cells and to lead to seemingly biocompatible degradation products. Despite in vitro differentiation studies weren¿t conclusive as to their osteogenic potential, both mechanically-tailored and non-tailored citric acid-crosslinked hydrogels were shown to integrate into bone and to be partially degraded upon implantation in critical size defects in mouse calvaria. Despite cell invasion in mechanically-tailored scaffolds was seemingly lower than in non-tailored counterparts, both types of matrices allowed the formation of bone tissue, by intramembranous ossification, to a similar extent by the end of the study. At the time points selected for the in vivo study, both tailored and non-tailored hydrogels were found to be osteoconductive; osteoinduction was not observed in any of the cases. Mechanically-tailored hydrogels not being seemingly superior to control matrices at selected time points could to be due to (i) a high surface polymer density hindering cell invasion and thus delaying osteoinduction, or to (ii) a non-osteoinductive combination of properties (chemical + physical) despite hydrogels possessing theoretically osteoinductive stiffness. These results point out that scaffolds must be seen as a whole given the high complexity of the in vivo cell niche, whose signals act synergistically to define cell behavior. Thus, more complex designs are required if recapitulation of bone development is to be targeted. Additionally, recombinant lysyl oxidase (LOX) from human aorta was successfully produced in Escherichia coli to high purity. Despite achieving LOX with copper cofactor amounts and activity higher than those found in the literature, overall activity was low and the insolubilization of ELRs was not achieved, suggesting that novel expression and purification systems not compromising enzymatic activity are required if LOX is to be used to produce scaffolds.
S'espera que la incidència global de fractures òssies, i per extensió la d'aquelles que no són capaces de consolidar per si soles, augmenti en les pròximes dècades, principalment degut a l'increment del risc de patologies associades a l'envelliment. Actualment, el camp dels biomaterials es mou cap al disseny de bastides que mimetitzen el microambient cel·lular per tal de guiar la diferenciació de cèl·lules mare i recapitular el desenvolupament de teixits diana. El biomimetisme és un concepte ampli i diverses aproximacions han sigut dutes a terme per tal de produir bastides capaces de guiar el comportament cel·lular. En aquesta tesi hem explorat l'ús d'àcid cítric i l'enzim lisil oxidasa, ambdós relacionats amb la nanoestructura i propietats mecàniques del teixit ossi, per desenvolupar bastides que mimetitzin la matriu extracel·lular de l'os en desenvolupament. En primer lloc, es va produir hidrogels basats en polímers recombinants de tipus elastina (Elastin-like recombinamers; ELRs) mitjançant una reacció d'entrecreuament en un pas amb àcid cítric, una molècula actualment considerada una peça essencial per l'adequat funcionament mecànic del teixit ossi. Havent fet un estudi sistemàtic de la reacció d'entrecreuament i de la seva contribució a les propietats dels hidrogels, vam ser capaços de controlar l'arquitectura i la rigidesa de les bastides entrecreuades amb àcid cítric, tot preservant la integritat de les seqüències d'adhesió cel·lular contingudes als ELRs. És interessant remarcar que l'ús d'àcid cítric com agent entrecreuant conferí als hidrogels capacitat de nucleació de fosfats de calci. Es va demostrar que els hidrogels entrecreuats amb àcid cítric i amb propietats mecàniques diana permeten el creixement de cèl·lules mare mesenquimals humanes i donen lloc a productes de degradació aparentment biocompatibles. Tot i que els estudis de diferenciació in vitro no van ser concloents pel que fa al potencial osteogènic d'aquestes bastides, tant les matrius amb propietats mecàniques diana com aquelles control van ser capaces d'integrar-se amb l'os natiu i van ser parcialment degradades un cop implantades en defectes de mida crítica en calotes de ratolí. Tot i que la invasió cel·lular en hidrogels amb propietats mecàniques diana va ser inferior en comparació amb l'observada en bastides control, ambdós tipus de matrius van permetre la formació d'os nou, mitjançant ossificació intramembranosa, en quantitats similars al final de l'estudi. Als punts temporals seleccionats, ambdós tipus de bastides van demostrar ser osteoconductives, però no es va observar evidències d'osteoconducció en cap cas. El fet que les bastides amb propietats mecàniques diana no fossin superiors a les matrius control pel que fa a formació òssia, podria ser degut a (i) a una elevada densitat superficial que hauria dificultat la invasió cel·lular i retrassat l'osteoinducció, o (ii) a una combinació de propietats (químiques + físiques) no osteoinductiva tot i que les bastides posseïen una rigidesa teòricament osteoinductiva. Aquests resultats demostren que les bastides han de ser vistes com un tot donada l'elevada complexitat del nínxol de cèl·lules mare in vivo, les senyals del qual actuen de forma sinèrgica per definir el comportament cel·lular. Així, és necessari assolir bastides amb un nivell de complexitat més elevat per tal de recapitular el desenvolupament ossi. Addicionalment, es va produir lisil oxidasa (LOX) d'aorta humana en forma recombinant a elevada puresa a partir de cultius d'Escherichia coli. Tot i que es va aconseguir produir LOX amb un contingut del cofactor coure i una activitat superiors a aquells trobats en la literatura, l'activitat de l'enzim va ser generalment baixa i no es va assolir la insolubilització d'ELRs. Això evidencia la necessitat de desenvolupar nous sistemes d'expressió i purificació de l'enzim per tal que aquest pugui ser aplicat a la producció de bastides.

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Ponzio, Florian. „Synthesis at different interfaces of bio-inspired films from mussels' byssus : influence of the oxidant nature at the solid/liquid interface and the addition of polymer at the air/water interface“. Thesis, Strasbourg, 2016. http://www.theses.fr/2016STRAE041/document.

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Les matériaux à base de polydopamine (PDA) s’inspirent de la forte adhésion du byssus de la moule sous l’eau. L’oligomérisation de la dopamine dans un milieu basique permet la formation de revêtement de PDA sur n’importe quel matériau. En plus de la simplicité du procédé celui-ci est vert et versatile. La PDA a des propriétés similaires aux mélanines, d’où son utilisation dans le domaine des phénomènes de conversion d’énergie, de l’environnement et du biomédical. Cependant la structure de la PDA étant inconnue, l’élaboration de matériaux basés sur la relation structure propriétés est difficile. L’un des buts de cette thèse a été de comprendre cette relation pour élaborer de nouveaux matériaux de PDA. En choisissant l’oxydant adéquat nous avons déposé un film épais, superhydrophile et biocompatible sur n’importe quels substrats. De plus nous avons découverts la possibilité de former des films de PDA à l’interface air/eau. L’étude de ce phénomène a permis de former des membranes autosupportées et stimuli responsives
Polydopamine (PDA) materials are inspired from mussels’ byssus strong adhesion underwater. The oligomerization of dopamine in a basic medium allows forming a PDA coating on virtually any materials. In addition to the simplicity, ecofriendly and versatility of the deposition method, PDA has properties similar to those of melanin pigments and displays many outstanding properties. Thus PDAis widely used in energy, environmental and biomedical sciences. However design of PDA based new materials with tailored properties is a challenge since its structure is still unknown. In that sense one of the aims of this thesis is to gain knowledge in PDA structure-property relationship in order to design PDA materials with new properties. By choosing the appropriate oxidant we deposited thick and superhydrophylic films on any materials for the elaboration of low fouling and biocompatible surfaces. Additionally we discovered the possibility to form PDA films at the air/water interface. The investigation of this phenomenon led to the formation of stimuli responsive free standing membranes

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Ivanová, Lucia. „Syntéza rozpustných prírodou inšpirovaných N, N-alkylovaných riboflavínových derivátov, štúdium efektu alkylových skupín“. Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2021. http://www.nusl.cz/ntk/nusl-444542.

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By flavin's unique structure, nature predestined riboflavin and its derivatives to the participation in redox processes within the bodies of all the living organisms. These biomolecules draw attention with intriguing optical properties and photosensitising abilities. Nature-inspired flavin derivatives share these qualities, and there is also a possibility of fine-tuning for the particular application from the chemical point of view. The thesis deals with two main aims. The first aim handles the synthesis of the trimer heteroaromatic precursor and 1,2-diketone. These key intermediates are essential for the future synthesis of the central aromatic core of the novel NH-free non-fused flavin derivative. The thesis introduces and verifies three approaches, including oxidation of diarylalkynes, nucleophilic addition of a corresponding organolithium compound to a Weinreb amide and benzoin condensation. The second aim covers the properties customization of NH-free fused systems by implementation of linear and bulky alkyl side-chains on the nitrogen atoms N1 and N3 of the alloxazine dilactam. N,N-alkylation introduced an increase in solubility in common organic solvents dichloromethane and chloroform. For the derivatives with 2-(adamantan-1-yl)ethyl substituents, high thermal stability was observed via TGA.

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Bücher zum Thema "Nature-inspired materials"

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Fratzl, Peter, John W. C. Dunlop und Richard Weinkamer, Hrsg. Materials Design Inspired by Nature. Cambridge: Royal Society of Chemistry, 2013. http://dx.doi.org/10.1039/9781849737555.

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Photonic Structures Inspired By Nature. Springer, 2011.

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Kolle, Mathias. Photonic Structures Inspired by Nature. Springer, 2013.

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Kolle, Mathias. Photonic Structures Inspired by Nature. Springer, 2011.

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Materials Design Inspired By Nature Function Through Inner Architecture. Royal Society of Chemistry, 2013.

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Bamford, Carole, writer of foreword, Hrsg. Architecture by hand: Inspired by nature. 2016.

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Bioinspired Photonics: Optical Structures and Systems Inspired by Nature. Taylor & Francis Group, 2015.

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Saitō, Yuriko. Japanese Gardens. Oxford University Press, 2017. http://dx.doi.org/10.1093/acprof:oso/9780190456320.003.0009.

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In Japan, as in the west, gardens represent an idealized form of nature in which human beings reshape the natural world according to specific aesthetic paradigms. Unlike Western formal gardens, which are characterized by symmetry and rigid order, Japanese gardens present a more “natural” appearance by articulating the native characteristics of the materials, such as rocks and plants. The philosophy of Zen Buddhism, as well as the time-honored garden design principle of “following the request” show how Japanese garden designers are inspired by—and possibly improve upon—nature in their art and how a respectful attitude toward nature is expressed aesthetically in Japanese gardens.

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Hobden, Fiona, und Amanda Wrigley, Hrsg. Ancient Greece on British Television. Edinburgh University Press, 2018. http://dx.doi.org/10.3366/edinburgh/9781474412599.001.0001.

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Ancient Greece has inspired television producers and captivated viewing audiences in the United Kingdom for over half a century. By examining how and why political, social and cultural narratives of Greece have been constructed through television’s distinctive audiovisual languages, and also in relation to its influential sister-medium radio, this volume explores the nature and function of these public engagements with the written and material remains of the Hellenic past. Through ten case studies drawn from feature programmes, educational broadcasts, children’s animations, theatre play productions, dramatic fiction and documentaries broadcast across the decades, this collection offers wide-ranging insights into the significance of ancient Greece on British television.

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Nissinen, Martti. Constructing Prophetic Divination. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198808558.003.0001.

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This chapter lays the theoretical foundation of the book, defining prophecy as a non-technical, or inspired, form of divination, in which the prophet acts as an intermediary of divine knowledge. It is argued that prophecy is as much a scholarly construct as a historical phenomenon documented in Near Eastern, biblical, as well as Greek textual sources. The knowledge of the historical phenomenon depends essentially on the genre and purpose of the source material which, however, is very fragmentary and, due to its secondary nature, does not yield a full and balanced picture of ancient prophecy. The chapter also discusses the purpose of comparative studies, arguing that they are necessary, not primarily to reveal the influence of one source on the other, but to identify a common category of ancient Eastern Mediterranean prophecy.

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Buchteile zum Thema "Nature-inspired materials"

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Kolle, Mathias. „Materials and Techniques“. In Photonic Structures Inspired by Nature, 57–78. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-15169-9_4.

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Speck, Thomas, Georg Bauer, Felix Flues, Katharina Oelker, Markus Rampf, Andreas C. Schüssele, Max von Tapavicza et al. „CHAPTER 16. Bio‐inspired Self‐healing Materials“. In Materials Design Inspired by Nature, 359–89. Cambridge: Royal Society of Chemistry, 2013. http://dx.doi.org/10.1039/9781849737555-00359.

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Bréchet, Yves J. M. „CHAPTER 1. Architectured Materials: An Alternative to Microstructure Control for Structural Materials Design? A Possible Playground for Bio‐inspiration?“ In Materials Design Inspired by Nature, 1–16. Cambridge: Royal Society of Chemistry, 2013. http://dx.doi.org/10.1039/9781849737555-00001.

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Willie, Bettina, Georg N. Duda und Richard Weinkamer. „CHAPTER 2. Bone Structural Adaptation and Wolff's Law“. In Materials Design Inspired by Nature, 17–45. Cambridge: Royal Society of Chemistry, 2013. http://dx.doi.org/10.1039/9781849737555-00017.

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Wagermaier, Wolfgang, Aurelien Gourrier und Barbara Aichmayer. „CHAPTER 3. Understanding Hierarchy and Functions of Bone Using Scanning X‐ray Scattering Methods“. In Materials Design Inspired by Nature, 46–73. Cambridge: Royal Society of Chemistry, 2013. http://dx.doi.org/10.1039/9781849737555-00046.

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Dey, Archan, und Nico A. J. M. Sommerdijk. „CHAPTER 4. Advanced Transmission Electron Microscopy to Explore Early Stages of Bio(mimetic)mineralization“. In Materials Design Inspired by Nature, 74–106. Cambridge: Royal Society of Chemistry, 2013. http://dx.doi.org/10.1039/9781849737555-00074.

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Giraud Guille, M. M., N. Nassif und F. M. Fernandes. „CHAPTER 5. Collagen‐based Materials for Tissue Repair, from Bio‐inspired to Biomimetic“. In Materials Design Inspired by Nature, 107–27. Cambridge: Royal Society of Chemistry, 2013. http://dx.doi.org/10.1039/9781849737555-00107.

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Gierlinger, N., C. Reisecker, S. Hild und S. Gamsjaeger. „CHAPTER 7. Raman Microscopy: Insights into the Chemistry and Structure of Biological Materials“. In Materials Design Inspired by Nature, 151–79. Cambridge: Royal Society of Chemistry, 2013. http://dx.doi.org/10.1039/9781849737555-00151.

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Paris, Oskar, Markus A. Hartmann und Gerhard Fritz-Popovski. „CHAPTER 8. The Mineralized Crustacean Cuticle: Hierarchical Structure and Mechanical Properties“. In Materials Design Inspired by Nature, 180–96. Cambridge: Royal Society of Chemistry, 2013. http://dx.doi.org/10.1039/9781849737555-00180.

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Friák, Martin, HELGE-OTTO Fabritius, Svetoslav Nikolov, Michal Petrov, Liverios Lymperakis, Christoph Sachs, PAVLíNA Elstnerová, Jörg Neugebauer und Dierk Raabe. „CHAPTER 9. Multi‐scale Modelling of a Biological Material: The Arthropod Exoskeleton“. In Materials Design Inspired by Nature, 197–218. Cambridge: Royal Society of Chemistry, 2013. http://dx.doi.org/10.1039/9781849737555-00197.

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Konferenzberichte zum Thema "Nature-inspired materials"

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Su, Haw-Lih, Hugo Bronstein, Tobin Marks, Hassan Bazzi und Mohammed Al-Hashimi. „Nature-Inspired Conjugated Molecules for Future Organic Solar Cell Materials“. In Qatar Foundation Annual Research Conference Proceedings. Hamad bin Khalifa University Press (HBKU Press), 2016. http://dx.doi.org/10.5339/qfarc.2016.eepp2213.

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Kishimoto, Naoko, M. C. Natori, Ken Higuchi und Katsuyuki Ukegawa. „New Deployable Membrane Structure Models Inspired by Morphological Changes in Nature“. In 47th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
14th AIAA/ASME/AHS Adaptive Structures Conference
7th. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2006. http://dx.doi.org/10.2514/6.2006-1898.

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Domazetovska, Simona, Kristijan Ivanoski, Stefani Josifovska, Viktor Slavkovski und Jovana Jovanova. „Environmentally Friendly Bio-Inspired Turtle Robot“. In ASME 2020 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/smasis2020-2341.

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Abstract Inspired by the movement of a turtle in nature, a low-budget turtle-like robot was designed and developed to operate on natural terrain. Applying affordable additive manufacturing (3D printing) leads into creating unique 3-D structure with potential of flexibility, multi-functionality and multi-movement. By implementing solar panels, the energy from the sun is used, which makes the robot self-sustainable. The robot is controlled remotely with an android application designed for the need of this work. The bio-inspired robot can play an interesting role in real-life applications, such as monitoring in hardly accessible terrain, video and data collection for environmental friendly application, animals’ observation and others. The main application of the robot is for animal observation in the zoo, so it will often need to move across not even landscape in order to allow surveillance of that area. By implementing smart materials, the movement of the turtle can be improved. This paper presents the design concepts and functionality, together with CAD model of the robot, the prototyping (hardware, control and application design) and the results from the measurements.

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Goodman, Joseph N., Jeannette Yen, Russell Gentry, Kathryn M. Nagel und Guillermo J. Amador. „A Compound Analogical Design for Low Cost Solar Panel Systems“. In ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/smasis2012-8256.

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In support of the Department of Energy Sunshot initiative target of $1.25 per watt photovoltaics systems for commercial applications, whole system designs were pursued using the analogical design methodology, an essential step in the bio inspired design approach. A functional decomposition of solar panel systems was conducted, and then key functions critical to system integrity and cost reduction were identified. Three sources of bio-inspiration were mainly used: hierarchical structures as a common design dimension exploited in natural systems, and leaves’ ability to maintain position through changes in shape and angle of attack when triggered by wind flow, and limpet shells’ reduction of hydrodynamic forces by way of natural geometrical features. The design team developed concepts with varying degrees of abstraction then attempted to reconcile them with other functional requirements. Variants that descended from the leaf concept were generally found to be biophilic and offer aesthetic value; however, presented shortcomings in electrical design and installation procedure (Kellert 2008). Alternatively, concepts inspired by hierarchical structures and limpet shells were found to have greater variability, enabling reconciliation with other functional requirements, resulting in a complete system solution capable of meeting the cost reduction objective. From the analysis of these design variants, we may conclude that transferring solution principles directly from nature is best done when there is small set of functional requirements that must be fulfilled and value in a biophilic design. However, in cases of significant system complexity, abstracted lessons from nature may be found to be more flexible and easily reconciled with multiple requirements.

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McCullar, Katie S., Preston C. Rhodes, S. Austin Underhill und Jacquelyn K. S. Nagel. „Application of Bio-Inspired Design to Minimize Material Diversity“. In ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/detc2016-59684.

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Bio-inspired design, or biomimicry, is an approach to innovation that takes nature’s time-tested patterns, forms, functions, processes, and materials and uses them to develop engineering solutions. In this project we take inspiration from biological morphologies to develop new forms for semi-recyclable products. Biological systems exhibit multi-functionality from form, not necessarily material, which offers inspiration for product life-cycle management. The goal is to better understand the connection between form and function as found in nature to enable sustainable product design and enhance additive manufacturing processes. Through the application of bio-inspired design product recyclability is increased through minimization of material diversity while still achieving desired functions. One inspiring biological morphology that has been utilized across multiple biological kingdoms and in this research is variations in hardness and flexibility found in alternating layers that are used to provide strength, durability and protection. Another inspiring morphology considered in this research is the backbone of water-diving birds, which consists of an intricately braided spine with parallel holes along each side. These holes allow for shock absorbance and force dispersion. These multi-function forms have resulted in the redesign of a semi-recyclable product fabricated using additive manufacturing to create a product that is made from a single material yet still achieves all necessary functions. Key contributions of this research include approaches for additive manufacturing strategies such as material utilization that align with a product’s life cycle, thus increasing the recyclability of the product.

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Karthigan, G., Sujoy Mukherjee und Ranjan Ganguli. „Fish Inspired Biomimetic Ionic Polymer Metal Composite Pectoral Fins Using Labriform Propulsion“. In ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASMEDC, 2011. http://dx.doi.org/10.1115/smasis2011-4931.

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Ionic polymer metal composites (IPMC) are a new class of smart materials that have attractive characteristics such as muscle like softness, low voltage and power consumption, and good performance in aqueous environments. Thus, IPMC’s provide promising application for biomimetic fish like propulsion systems. In this paper, we design and analyze IPMC underwater propulsor inspired from swimming of Labriform fishes. Different fish species in nature are source of inspiration for different biomimetic flapping IPMC fin design. Here, three fish species with high performance flapping pectoral fin locomotion is chosen and performance analysis of each fin design is done to discover the better configurations for engineering applications. In order to describe the behavior of an active IPMC fin actuator in water, a complex hydrodynamic function is used and structural model of the IPMC fin is obtained by modifying the classical dynamic equation for a slender beam. A quasi-steady blade element model that accounts for unsteady phenomena such as added mass effects, dynamic stall, and the cumulative Wagner effect is used to estimate the hydrodynamic performance of the flapping rectangular shape fin. Dynamic characteristics of IPMC actuated flapping fins having the same size as the actual fins of three different fish species, Gomphosus varius, Scarus frenatus and Sthethojulis trilineata, are analyzed with numerical simulations. Finally, a comparative study is performed to analyze the performance of three different biomimetic IPMC flapping pectoral fins.

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Bruck, Hugh A., Alan L. Gershon und Satyandra K. Gupta. „Enhancement of Mechanical Engineering Curriculum to Introduce Manufacturing Techniques and Principles for Bio-Inspired Product Development“. In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-60584.

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Bio-inspired products and devices take their inspiration from nature [Gold00]. Current mechanical engineering curricula do not cover manufacturing techniques and principles needed to develop such products and devices. We have been enhancing the mechanical engineering undergraduate curriculum by integrating recent advances in the manufacturing of bio-inspired products and devices through the following activities: 1. Insert a new sequence of instructional materials on bio-inspired concepts into the mechanical engineering curriculum. 2. Disseminate the materials developed for the new modules and course notes through a dedicated web site. As a result of the curriculum enhancement, a new generation of mechanical engineers will acquire the knowledge necessary to develop products and conduct research for a wide variety of applications utilizing bio-inspired concepts. The project (1) integrates emerging manufacturing technologies based on biological principles into the Mechanical Engineering curriculum, (2) utilizes multi-media technology for disseminating course content, and (3) trains graduate students and faculty participating in its implementation in an emerging technology and thereby contribute to faculty development. Specifically, curriculum is being developed that discusses the following manufacturing technologies and principles: 1. Concurrent Fabrication and Assembly: Manufacturing techniques and principles, such as solid freeform fabrication, compliant mechanisms, and multi-stage molding, that can eliminate the manufacturing and assembly of individual components as is the case for almost all natural systems. 2. Self Assembly: Principles for manufacturing a variety of products from a few building blocks using bio-inspired techniques such as templating and supramolecular chemistry. 3. Functionally Graded Materials: Bio-inspired development of new products through the gradual variation of material properties at multiple length scales through manufacturing processes such as sputtering and powder processing. The curriculum development effort makes two significant contributions to mechanical engineering education: (a) integration of a new research on bio-inspired products and devices into the mechanical engineering curriculum through new courses and revision of existing courses, (b) development of new instructional material for mechanical engineering education based on bio-inspired concepts. There are also broader impacts in the following areas: (a) undergraduate students who might not otherwise puruse studies in mechanical engineering will be attracted to the multidisciplinary area of bio-inspired products, (b) dissemination of the curriculum enhancement through conference presentations, a workshop, and dedicated web site, and (c) a biologically-oriented pedagogical approach to mechanical engineering education that ensures broader access to the knowledge needed to enhance the interest and skills of future engineers and researchers educated through this research program.

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Zhou, Haofei, Xin Chen und Yumeng Li. „Design of Gradient Nanotwinned Metal Materials Using Adaptive Gaussian Process Based Surrogate Models“. In ASME 2019 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/detc2019-97659.

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Abstract Inspired by gradient structures in the nature, Gradient Nanostructured (GNS) metals have emerged as a new class of materials with tunable microstructures. GNS metals can exhibit unique combinations of material properties in terms of ultrahigh strength, good tensile ductility and enhanced strain hardening, superior fatigue and wear resistance. However, it is still challenging to fully understand the fundamental gradient structure-property relationship, which hinders the rational design of GNS metals with optimized target properties. In this paper, we developed an adaptive design framework based on simulation-based surrogate modeling to investigate how the grain size gradient and twin thickness gradient affect the strength of GNS metals. The Gaussian Process (GP) based surrogate modeling technique with adaptive sequential sampling is employed for the development of surrogate models for the gradient structure-property relationship. The proposed adaptive design integrates physics-based simulation, surrogate modeling, uncertainty quantification and optimization, which can efficiently explore the design space and identify the optimized design of GNS metals with maximum strength using limited sampling data generated from high fidelity but computational expensive physics-based simulations.

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Manzo, Justin E., Emily A. Leylek und Ephrahim Garcia. „Drawing Insight From Nature: A Bat Wing for Morphing Aircraft“. In ASME 2008 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASMEDC, 2008. http://dx.doi.org/10.1115/smasis2008-613.

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Being the only flying mammal, bats have evolved unique flight devices affording them high maneuverability and efficiency despite their low flight speeds. By selecting bats of three different ecological niches — a highly efficient fishing bat, a nimble insectivorous forager, and a large soaring bat of the ‘flying fox’ family — passive wing shapes can be demonstrated as capable of attaining very different aerodynamic performance characteristics. The aerodynamics of man-made equivalents to these wing shapes, using thin airfoils rather than skeleton and membrane construction, are studied both computationally through a lifting-line approach and experimentally with quasistatic wind tunnel data of ‘morphed’ and ‘unmorphed’ wing shapes. Results confirm that shape inspired by the larger soaring bat has higher lift-to-drag ratios, while that of the foraging bat maintains lift at higher angles of attack than the other wings. The advantages are more pronounced by morphing, increasing both lift coefficient and lift-to-drag ratios by up to 50% for certain wings. This is validated both numerically and in the Cornell University 4′×4′ wind tunnel. Analysis of these shapes provides the first phase of wing design for use on a morphing aircraft vehicle. In order to take greater advantage of vehicle morphing, wing shapes with camber and twist distributions unique from those found in nature will evolve to suit a man-made structure. In this way, a wing shape intended for cruise may extend its practicality into highly maneuverable operations through the use of wing morphing. Starting from the bat planform shapes, a series of optimizations determines the best camber and twist distributions for effective morphing. Given a fixed degree of shape change at any point along an airfoil based on mechanism constraints, improved morphing performance can be found compared to initial assumptions of the natural shape change. Heuristic optimization employing simulated annealing determines the required morphing shapes for increased performance, broadening the abilities of each wing shape by increasing parameters such as lift, rolling moment, and endurance.

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Meller, Michael, und Ephrahim Garcia. „Power Savings of a Variable Recruitment Hydraulic Artificial Muscle Actuation Scheme“. In ASME 2014 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/smasis2014-7718.

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We investigate utilizing inelastic bladder hydraulic artificial muscle actuators as muscle fibers. These muscle fibers are then grouped together to form a variable recruitment artificial muscle bundle. This muscle bundle configuration is biologically inspired, where in skeletal muscle, different numbers of motor units are recruited to match the load by increasing the number of motor neurons firing. This results in extremely efficient locomotion in nature. It is desired to use a similar methodology to increase the actuation efficiency of valve-controlled hydraulic systems. Such hydraulic control systems induce a pressure drop in the valves to throttle the flow to the cylinder actuators. Using the valves in this manner is simple but very inefficient. Hence, this paper presents selectively recruiting different numbers of the hydraulic artificial muscle fibers to match a required loading scenario similar to our bipedal robot. By using fewer of the muscle fibers to match a smaller load, less power is consumed from the hydraulic power unit because instead of inducing a pressure drop, the volume of fluid delivered is decreased. The potential efficiency improvements associated with this actuation scheme is compared to a traditional hydraulic system with differential cylinders.

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Berichte der Organisationen zum Thema "Nature-inspired materials"

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Scheidt, Karl A., und Chris Galliford. Nature Inspired Strategies for New Organic Materials. Fort Belvoir, VA: Defense Technical Information Center, Januar 2007. http://dx.doi.org/10.21236/ada462830.

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