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This study introduces a novel multilayer optical storage device for long-term preservation of textual information. The innovative design offers high capacity and direct readout without encoding, ensuring data longevity.

Area of Science:

Materials Science
Optical Engineering
Information Science

Background:

Textual information is crucial for civilization but current storage methods lack capacity and longevity.
Existing digital and analog storage technologies face limitations in long-term preservation and large-scale data retention.

Purpose of the Study:

To develop a high-capacity, long-term optical storage solution for textual information.
To overcome limitations of existing storage methods regarding data density and archival stability.

Main Methods:

Utilizing laser heat-mode photoresist (AgInSbTe) on glass substrates for information inscription via lithography.
Developing a stacked-based multilayer optical storage device with up to 60 layers.
Employing sodium silicate as bonding layers to enhance image contrast and mitigate air gap issues.

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Main Results:

Demonstrated complete retention of textual information after clarification treatment.
Achieved a significant increase in storage capacity through multilayer stacking.
Calculated that a small array of devices can store a medium-sized library (100,000 volumes).

Conclusions:

The proposed optical storage device offers a new solution for large-capacity, long-term textual information preservation.
The method avoids encoding/decoding and format expiration issues, ensuring data accessibility.
Direct readout via optical microscope simplifies data retrieval and enhances archival reliability.