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Session 5 resources biomimicry ppt

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Biomimicry

Biomimicry

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  • Why is biomimicry importantOlver, who is also chair of E4E, an organisation of 36 engineering institutions, said the draft proposals for design and technology did "not meet the needs of a technologically literate society"."Instead of introducing children to new design techniques , such as biomimicry (how we can emulate nature to solve human problems), we now have a focus on cookery. Instead of developing skills in computer-aided design, we have the introduction of horticulture. Instead of electronics and control, we have an emphasis on basic mechanical maintenance tasks," he told a conference of educators earlier this month. "In short, something has gone very wrong."
  • Our definition
  • BiomimicryScience of biomimicry new – principle oldLong used technology to imitate nature – leonardo da vinci’s flying machine mimicked a bird wings
  • George de Mestral invented Velcro by re creating natural burrs – examining under a microscope he discovered tiny hooks that clung to fibresFabric fastening invented with hooks on one side and lops on the other
  • ColorationAs with many birds, vibrant iridescent plumage colours are not primarily pigments, but structural colouration. Optical interference Bragg reflections, based on regular, periodic nanostructures of the barbules (fiber-like components) of the feathers produce the peacock's colors. Slight changes to the spacing result in different colours. Brown feathers are a mixture of red and blue: one colour is created by the periodic structure, and the other is a created by a Fabry–Pérot interference peak from reflections from the outer and inner boundaries. Such structural colouration causes the iridescence of the peacock's hues, since unlike pigments, interference effects depend on light angle.Colour mutations exist through selective breeding, such as the leucistic White Peafowl and the Black-Shouldered Peafowl.Many of the brilliant colours of the peacock plumage are due to an optical interference phenomenon (Bragg reflection) based on (nearly) periodic nanostructures found in the barbules (fiber-like components) of the feathers. Different colours correspond to different length scales of the periodic structures.Such interference-based structural colour is especially important in producing the peacock's iridescent hues (which shimmer and change with viewing angle), since interference effects depend upon the angle of light, unlike chemical pigments.Like oil on water – white light (made up of all the colours of the rainbow)
  • ColorationAs with many birds, vibrant iridescent plumage colours are not primarily pigments, but structural colouration. Optical interference Bragg reflections, based on regular, periodic nanostructures of the barbules (fiber-like components) of the feathers produce the peacock's colors. Slight changes to the spacing result in different colours. Brown feathers are a mixture of red and blue: one colour is created by the periodic structure, and the other is a created by a Fabry–Pérot interference peak from reflections from the outer and inner boundaries. Such structural colouration causes the iridescence of the peacock's hues, since unlike pigments, interference effects depend on light angle.Colour mutations exist through selective breeding, such as the leucistic White Peafowl and the Black-Shouldered Peafowl.Many of the brilliant colours of the peacock plumage are due to an optical interference phenomenon (Bragg reflection) based on (nearly) periodic nanostructures found in the barbules (fiber-like components) of the feathers. Different colours correspond to different length scales of the periodic structures.Such interference-based structural colour is especially important in producing the peacock's iridescent hues (which shimmer and change with viewing angle), since interference effects depend upon the angle of light, unlike chemical pigments.Like oil on water – white light (made up of all the colours of the rainbow)
  • ColorationAs with many birds, vibrant iridescent plumage colours are not primarily pigments, but structural colouration. Optical interference Bragg reflections, based on regular, periodic nanostructures of the barbules (fiber-like components) of the feathers produce the peacock's colors. Slight changes to the spacing result in different colours. Brown feathers are a mixture of red and blue: one colour is created by the periodic structure, and the other is a created by a Fabry–Pérot interference peak from reflections from the outer and inner boundaries. Such structural colouration causes the iridescence of the peacock's hues, since unlike pigments, interference effects depend on light angle.Colour mutations exist through selective breeding, such as the leucistic White Peafowl and the Black-Shouldered Peafowl.Many of the brilliant colours of the peacock plumage are due to an optical interference phenomenon (Bragg reflection) based on (nearly) periodic nanostructures found in the barbules (fiber-like components) of the feathers. Different colours correspond to different length scales of the periodic structures.Such interference-based structural colour is especially important in producing the peacock's iridescent hues (which shimmer and change with viewing angle), since interference effects depend upon the angle of light, unlike chemical pigments.Like oil on water – white light (made up of all the colours of the rainbow)
  • Morphotex fibre mimics the properties of the Morpho butterfly with the iridescent colour of its wings, also similar to that of a peacock feather. The Japanese textile company Teijin have reproduced this microscopic structure using polyester and nylon fibres in alternating layers so that light will bounce and scatter between the layers to reveal a rainbow of colours. As the colour is purely a trick of the light, no dye is needed which cuts water usage, toxic chemicals and energy used to dye the fabric. The fabric will also never fade like dyed fabrics often do.Morpho butterflies remain a vibrant blue throughout their lives, without ever needing a coat of paint to spruce up a dull finish. The scales on their wings are made of many layers of proteins that refract light in different ways, and the color we see often is due entirely to the play of light and structure rather than the presence of pigments. Teijin Fibers Limited of Japan produces Morphotex® fibers. No dyes or pigments are used. Rather, color is created based on the varying thickness and structure of the fibers. Energy consumption and industrial waste are reduced because no dye process must be used.
  • Morphotex fibre mimics the properties of the Morpho butterfly with the iridescent colour of its wings, also similar to that of a peacock feather. The Japanese textile company Teijin have reproduced this microscopic structure using polyester and nylon fibres in alternating layers so that light will bounce and scatter between the layers to reveal a rainbow of colours. As the colour is purely a trick of the light, no dye is needed which cuts water usage, toxic chemicals and energy used to dye the fabric. The fabric will also never fade like dyed fabrics often do.Morpho butterflies remain a vibrant blue throughout their lives, without ever needing a coat of paint to spruce up a dull finish. The scales on their wings are made of many layers of proteins that refract light in different ways, and the color we see often is due entirely to the play of light and structure rather than the presence of pigments. Teijin Fibers Limited of Japan produces Morphotex® fibers. No dyes or pigments are used. Rather, color is created based on the varying thickness and structure of the fibers. Energy consumption and industrial waste are reduced because no dye process must be used.
  • No need to throw away an old raincoat because a tiny rip or hole. Scandinavian researchers are fabricating a textile coating that automatically seals tears on the surface of waterproof workwear. Developed for EU project Safe@Sea, which is conceiving a new generation of “intelligent” clothing to protect professional fishermen, the technology shows promise even in its early stages. “We have shown that the principle works,” says Susie Jahren, a senior research scientist at SINTEF. “Holes and tears we have made in test pieces in the lab close up all on their own.”
  • Hagfish slime: The clothing of the future?- abundant, highly-condensed slime.slime-producing glands A hagfish has about 100 of these glands, or invaginations, that run along the side of its body from which they exude a milky, white substance, comprising mucus and thread. When this gets mixed with seawater, it expands, creating huge amounts of clear slime, composed of very thin - but super-strong and stretchy - fibres.When you stretch the fibres in water and then dry them out, they become silky.Scientists believe hagfish slime or similar proteins could be turned into tights or breathable athletic wear, or even bullet-proof vests.For years, scientists have been looking for alternatives to synthetic fibres like nylon and lycra, or spandex, which are made from oil - a non-renewable resource. Hagfish slime has the potential to provide a natural and renewable alternative.
  • Stomatex is the patented physics that replicates the way that the leaves of plants transpire. Stomatex Neoprene is a high-performance fabric made from a lightweight, ultra-thin, non-porous polyester membrane that is weatherproof and highly breathable. It is currently produced in Stomatex Neoprene, although further advanced polymer foam technologies are under development.Neoprene (a synthetic rubber) demonstrates superior tensile strength and elasticity, offering significant advantages over plastic foam materials and making Stomatex® ideal for close contour applications where body movement must remain unhindered.
  • Our definition
  • Transcript

    • 1. BiomimicryDick Oliver quoted in the Guardian 31st March 2013
    • 2. Definitioncircular economy = nature
    • 3. ResourcesTextile Futures – Bradley Quinn
    • 4. VelcroImage from Alexander Klink aka "Alech“ - WikiMedia Commons
    • 5. ResearchJanine Benyus
    • 6. Colour/decoration
    • 7. PeacocksImage from Gordana AMs photostream – WikiMedia CommonsLink to Braggs Law - http://en.wikipedia.org/wiki/Bragg_reflections
    • 8. Oil on waterImage from Creativity103s photostream – WikiMedia Commons
    • 9. Morphotex Structural Coloured FibersImages from http://emily-louise-smith-chelsea.blogspot.co.uk/2010/12/morphotex.html
    • 10. Blinds in a hotelLinen fabric laser cut in interesting shapes and layered.
    • 11. WallcoveringFormed felt – shade cast on wall creates the pattern
    • 12. Textiles that repairs own ripsImage from Ecoterre
    • 13. Hagfish slime: The clothing of the future?http://www.bbc.co.uk/news/magazine-21954779
    • 14. BioCuture
    • 15. Image and further info from http://biocouture.co.uk/
    • 16. Shark SkinImage from Kathy Barnstorff NASA – WikiMedia Commons
    • 17. StomatexImage from http://www.stomatex.com/concept.htm
    • 18. What nextLink to web page and booking infohttp://www.ntu.ac.uk/adbe/news_events/events/135571.html?campaignid=philipbreedonlecture
    • 19. Food for thought
    • 20. Definitioncircular economy = nature

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