#topographie/montagne # Tensible plicaromorphic carbon allotrope and amino acid composite polymer A medium-weight [biopolymer](https://en.wikipedia.org/wiki/Biopolymer), made of [carbon allotrope](https://en.wikipedia.org/wiki/Allotropes_of_carbon) and amino acid composite macromolecules acting as very specific organic nano-mechanical components, resembling a complex origami-like folding structures \[[x](https://www.pinterest.ca/pin/397935317083492739/), [x](https://i.pinimg.com/originals/f6/50/66/f65066a15475c59ef7f044d0d71d967b.jpg)\] when seen from a nanometric scale. The complexity and ingenuity of the polymer tensing mechanism is due to a breakthrough in AI-assisted chemical simulations and research, joining computational origami (specifically algorithmic origami tesselation, as seen in [Walker and Stankovic](https://www.nature.com/articles/s43246-022-00227-5)) and automatic machine learning. This polymer has the property to be tensible, a term introduced in #incomplete by the Nobel Prize biochemist #incomplete. It can solidify itself through a very specific medium-energy electromagnetic wave perturbation induced in the Schwarzic resonance site \[[x](https://en.wikipedia.org/wiki/Allotropes_of_carbon#Schwarzites), [x](https://pubs.rsc.org/en/content/articlelanding/2018/cc/c8cc01932k)\] of an extremity [mer](https://en.wikipedia.org/wiki/Repeat_unit), exploiting the resonance of nano-carbon allotropic shapes (see for example [Feng et al.](https://pubs.rsc.org/en/content/articlelanding/2016/cp/c6cp04201e) or [Yasuda et al.](https://www.nature.com/articles/srep22600).) This perturbation triggers a chain reconfiguration in the cristaline structure of the polymer, tensing its shape to an almost perfectly planar sheet (empirical Gaussian curvature of $(15 \pm 1) \cdot 10^{-9}~ m^{-1}$ in microgravity). It requires the complex conjugate of the initial electromagnetic wave function to undo the initial chain reaction, untensening the material and rendering it foldable again. ## Applications ### Personal terminals Although a little less hard and slightly more brittle, variants of these complexes doped with alkali aluminosilicate, or less prevalently aluminium oxide, makes for a perfect [[foldable pocket computers|personal terminal]] glass when paired with a [frustrated total internal reflection](https://patents.google.com/patent/US8259240) sensor-emitter layer (which has to be properly calibrated to flex with the screen.) ### Military applications Body armors made of tensible polymers have been widely adopted over those made with HMPE, kevlar or other low-density fabrics, mostly for the mobility it offers. In passive mode, the fabric is soft and adjusts to body movements. The tensible polymer must be paired with a reactive layer that sets off the tensening reaction of the polymer when applied with significant force, strengthening the pierced armor region in nanoseconds (while bullets usually takes microseconds to pierce a medium-weight civil textile.) ---- Could have a similar look to The Expanse [hand terminals](https://expanse.fandom.com/wiki/Hand_terminal). # ramblings ## about the name the name is slightly awkward and does not fully explains what it does... quoique? fabric = soft, stiffening = stiffens. stiffenable? tensible? (<= made-up word that makes sense) is the word mesh even useful? Alright found a good name => Tensible plicaromorphic carboamino acid polymer (from latin *plicare*, "plier"). ## Time to pierce an armor For a body armor of [[tensible fabrics]] that tenses on a bullet hit Suppose the textile is 0.25mm thick. Say it is hit by a bullet. A very fast bullet goes at about 1200m/s. Then, it penetrates the textile in $ \begin{align*} 0.25\rm{~mm} \cdot \frac{1\rm{~m}}{1000\rm{~mm}}\cdot \frac{1\rm{~s}}{1200\rm{~m}} &= 0.000000208 \rm{~s} \\ & = 2.08\times 10^{-7} s \\ & = 20.8 ~ \mu\rm{s}. \end{align*} $ The scale is thus less than microseconds of reaction time needed.