447 TB/cm² at zero retention energy – atomic-scale memory on fluorographane

Overall reaction to the storage claim

• Many commenters are jaded about “breakthrough” storage tech, comparing this to decades of hyped but uncommercialized ideas (holograms, exotic media, etc.).
• Several emphasize that lab demonstrations aren’t the hard part; scaling, speed, durability, and manufacturability usually kill these concepts.
• Others argue that such early-stage work is still valuable as a potential direction, even if odds of commercialization are low.

Technical core: material and density

• The medium is a single-atom-thick fluorographane layer; storage density is given per unit area because it’s essentially 2D.
• Fluorographane is described as the sp³-saturated analogue of fluorographene, with bistable C–F orientations encoding bits.
• A key physics claim is a high but finite barrier for fluorine “pyramidal inversion” (bit flip) via a transition state verified with standard quantum chemistry methods.

Read/write architectures (Tier 1 vs Tier 2)

• Tier 1: Scanning-probe (C-AFM) read/write on existing commercial instruments. Very slow but sufficient for proof-of-concept and extreme areal density.
• Tier 2: Speculative near-field mid-IR optical arrays with sub-10 nm resolution and MEMS structures, targeting ∼25 PB/s throughput and volumetric “nanotape spool” capacities of 0.4–9 ZB/cm³.
• Several commenters find Tier 2 physically or practically implausible, especially the proposed optical addressing and caching rhetoric.

Skepticism, red flags, and peer review

• Multiple posters flag the document’s length, tone (“revolutionary,” marketing-like), and inclusion of system-architecture and economics commentary as un-journal-like.
• Several believe large portions read like LLM-generated text; this significantly reduces their trust, even if the underlying physics might be sound.
• Others push back that dismissing research based on style or affiliation alone is a flawed “sniff test.”
• The work is reported as under peer review; input files and methods are said to be reproducible with standard software.

Practicality and use cases

• Commenters stress that even if density is real, slow access and complex optics/mechanics could relegate this to archival or niche roles.
• Comparisons are made to existing high-density but slow media (magnetic tape, optical, glass storage) and to historic examples where commercialization lagged fundamental physics by decades.