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SUMMARY:Physics of Fixational Eye Movements - Fabian Coupette (University 
 of Leeds)
DTSTART:20250911T151000Z
DTEND:20250911T151500Z
UID:TALK236059@talks.cam.ac.uk
DESCRIPTION:Materials are often useful because they display correlations a
 t scales much larger than that of their elementary components\, which conf
 ers them a plethora of desirable properties (transparency\, rigidity\, col
 or\, etc.). The most natural example is that of crystals: their periodicit
 y\, which creates correlations across all scales\, from the atom to the bu
 lk material. However\, in nature\, many systems\, from bird feathers to fi
 sh scales\, display structural correlations at long range only\, without l
 ooking ordered\, let alone periodic\, at smaller scales.&nbsp\;\nEngineeri
 ng such correlated yet disordered systems is a challenge from both the fun
 damental and practical aspects. In this poster\, I present an algorithmic 
 solution to engineer correlated disordered structures with arbitrary featu
 res in their Fourier-space correlations that is many orders of magnitude f
 aster than past strategies.&nbsp\;\nUsing this Fast Reciprocal-Space Corre
 lator (FReSCo)\, I showcase an example application to photonics.&nbsp\;\nF
 rom a simple heuristic\, I show that one may generate a new class of struc
 tures\, called gyromorphs\, that display liquid-like isotropic structure a
 t short range but Bragg-like peaks in their spectrum. I show that these st
 ructures display isotropic bandgaps\, and may be generalized to more intri
 cate structures\, in either 2d or 3d -- showing that FReSCo is a promising
  tool to discover functional disordered materials.&nbsp\;
LOCATION:External
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