Here's What Kevlar and Your Smartphone Have in Common

You might not believe it, but the same chemistry that brought us bulletproof vests and modern sailing sails also gave us the technology to build your smart phone. But that doesn’t mean these chemists were thinking about these applications when they made their breakthroughs.



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Sources:
https://www.nauticexpo.com/boat-manufacturer/kevlar-sail-36624.html
https://midbellmusic.com/products/remo-ks061400-14-black-max-kevlar-snare-drum-head
https://www.ncjrs.gov/App/Publications/abstract.aspx?ID=76896
https://invention.si.edu/innovative-lives-stephanie-kwolek-and-kevlar-wonder-fiber
https://invention.si.edu/node/445/p/435-discovery
https://polymerdatabase.com/Fibers/Aramid.html
https://www.sciencedirect.com/topics/materials-science/aramid-fiber
https://digital.sciencehistory.org/works/vh53ww75r#ohDownloads
https://www.dupont.com/content/dam/dupont/amer/us/en/safety/public/documents/en/Kevlar_Technical_Guide_0319.pdf
https://www.vice.com/en/article/ezpvb4/this-is-what-happens-when-you-shoot-a-kevlar-vest-at-point-blank-range
https://www.bodyarmornews.com/how-does-kevlar-work/
https://www.nytimes.com/1974/05/13/archives/kevlar-enters-spotlight-as-new-miracle-fiber-resistance-to-stretch.html
https://web.media.mit.edu/~stefan/liquid-crystals/node3.html
https://spie.org/samples/TT100.pdf
https://www.youtube.com/watch?v=EFHk28WqXm8
https://ieeexplore.ieee.org/document/6487587?reload=true

Image Sources:
https://www.istockphoto.com/photo/smartphone-mockup-with-blank-white-screen-on-a-yellow-background-gm1257716991-368683678
https://www.istockphoto.com/photo/colorful-wavy-object-gm1198272365-342402674

https://www.istockphoto.com/photo/molecular-structure-gm174289788-24964413
https://commons.wikimedia.org/wiki/File:Stephanie_Kwolek_at_Spinning_Elements_by_Harry_Kalish.TIF (https://creativecommons.org/licenses/by-sa/3.0/deed.en)
https://www.istockphoto.com/photo/clean-new-steel-rope-sling-drum-gm595100944-102021345
https://en.wikipedia.org/wiki/Aramid#/media/File:Kevlar_chemical_structure_H-bonds.svg
https://www.istockphoto.com/photo/cosmetic-beauty-care-cream-gel-serum-background-gm1180254134-330582310
https://www.istockphoto.com/photo/gold-glitter-texture-background-sparkling-shiny-wrapping-paper-for-christmas-holiday-gm1180882747-330976753
https://www.istockphoto.com/photo/oil-with-air-bubbles-at-the-white-gm508342206-85211505
https://www.istockphoto.com/photo/aqua-waterscape-gm92376580-1369033
https://www.istockphoto.com/photo/texture-of-silver-carbon-fiber-gm508076943-45362792
https://commons.wikimedia.org/wiki/File:Aramid_fiber2.jpg (https://creativecommons.org/licenses/by-sa/3.0/deed.en)
https://www.istockphoto.com/photo/material-of-composite-product-dark-carbon-fiber-gm1035716588-277269210
https://www.istockphoto.com/photo/three-pads-cevlar-gm1208829728-349562185
https://www.istockphoto.com/vector/flexed-bicep-glyph-icon-gm1187826990-335706466
https://www.storyblocks.com/video/stock/soccer-goal-scored-champion-success-sport-nv9pq7r
https://www.istockphoto.com/photo/car-wheel-gm95757577-4521153
https://www.istockphoto.com/photo/snare-drum-on-black-background-gm619631790-108081491
https://www.istockphoto.com/photo/toy-boat-with-a-large-brown-sail-gm172402185-4759229
https://www.istockphoto.com/photo/water-line-gm646843796-117308813
https://www.istockphoto.com/photo/crystal-refractions-background-gm864426064-143347925
https://www.istockphoto.com/photo/laptop-computer-gm184084320-1747232
https://www.istockphoto.com/photo/macro-of-dots-on-a-ctr-monitor-gm1286297244-382843931
https://www.istockphoto.com/photo/mature-latin-american-businesswoman-working-from-home-gm1207315436-348543210