Two technicians in blue cleanroom suits review a Memory Lattice Prototype screen showing a wafer map, a cubic lattice diagram, and a process run with every step marked OK

YS·LATTICE · Memory Lattices

Storage that outlives its readers.

Optical memory lattices, grown in our Kyoto cleanroom and certified for archival service since 2118. They hold the mission logs, medical research, and records that have to be readable long after the people who wrote them are gone.

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01 · Specification

Certified a wafer at a time.

Each lattice starts as a batch of six wafers. Deposition, etch, lithography, and metrology are checked step by step against recipe ML-P001, and no step advances until the one before it reads OK.

Retention is measured, not projected. A lattice is certified for archival service only after its structure has been imaged and accepted layer by layer.

YS·LATTICE — DATASHEET EXTRACT

Memory lattice specification
Media	Optical lattice
Capacity	4.096 EB per array
Retention	> 200 yr
Archival cert.	Since 2118
Process recipe	ML-P001
Batch	6 wafers
Inspection	EM-5000 every layer
Host	YS·CORE 4077 native

Reference batch 24A-017 · wafer 3 of 6 · step: lattice form

Macro photograph of a memory lattice wafer under amber safelight: a grid of square dies, each with a fine cubic microstructure that splits the light into gold, violet and teal, resting in a grey carrier while a technician in a blue glove lifts its edge with a vacuum wand; the ID ML-P001 · 24A-017 · W3/6 is laser-etched near the edge, and a 良光 Yoshimitsu Systems label glows on the equipment behind — YS·LATTICE · Litho bay · amber safelight

02 · The wafer

Wafer 3 of 6.

A lattice is grown die by die across a 300 mm wafer. Each die carries a cubic microstructure fine enough to split the bay's amber safelight into colour, and it is that structure, not a coating, that holds the data.

Wafers are touched only at the edge, by vacuum wand, and every one is laser-etched with its recipe, batch, and position before the first layer is laid. The etched ID stays with a lattice from the Kyoto cleanroom to whatever archive it ends up in.

WAFER 300 mmID ML-P001 · 24A-017 · W3/6HANDLING Edge · vacuum

A researcher adjusts the sample stage of an EM-5000 electron microscope while lattice micrographs fill the monitors at the workstation — EM-5000 · Imaging lab · Kyoto

03 · Imaging

Endurance is a measurement.

Before a lattice is certified, it goes under the EM-5000 electron microscope in our imaging lab. Every layer is checked by someone with a notebook open beside the keyboard, and any defect sends the wafer back.

The process is slow on purpose. A lattice that leaves Kyoto may never be seen by an engineer again, so it has to be right the first time.

04 · One architecture

The rest of the system.

YS·CORE

Compute Cores

The Model 4077, the core every lattice is built to serve.

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YS·NAV

Navigation Systems

Star charts and course history, logged to lattice for the whole journey.

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YS·BRIDGE

LCARS Interface

The bridge panels that show a crew what every lattice is holding.

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