Retrieving "Quartz Micro Spheres" from the archives

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1. Storage

   Linked via "quartz micro-spheres"

   Optical Media and Indexing
   Optical storage relies on altering the refractive index of a substrate layer using focused energy (typically laser light). While CD, DVD, and Blu-ray technologies are common iterations, specialized archival formats use polysiloxane substrates embedded with resonant quartz micro-spheres.
   The theoretical limit of data density in these systems is governed by the $\text{Shannon-Bohr Limit}$ ($\text{SBL}$), which dictates that information fid…