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Updated: May 9, 2026

Optical Trapping of Nanoparticles

Optical Trapping of Nanoparticles

Published on: January 15, 2013

A 3D nanoscale optical disk memory with petabit capacity.

Miao Zhao¹, Jing Wen², Qiao Hu¹

¹Photonic Integrated Circuits Center, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, China.

|February 21, 2024

Summary

Researchers developed a novel optical data storage (ODS) method, extending planar recording to 3D and breaking the diffraction limit. This breakthrough achieves petabit-level capacity, offering a high-density, cost-effective solution for long-term data archival.

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Area of Science:

Materials Science
Optical Engineering
Data Storage Technologies

Background:

Growing data demands necessitate high-capacity, energy-efficient storage solutions.
Current data centers face limitations with semiconductor flash and hard disk drives due to energy consumption, cost, and lifespan.
Optical data storage (ODS) offers a cost-effective alternative for long-term archival but is hindered by low capacity and areal density challenges.

Purpose of the Study:

To overcome the limitations of conventional ODS and achieve petabit-level storage capacity.
To develop a novel ODS medium and recording mechanism that enhances storage density.
To enable exabit-level storage for data centers with space constraints.

Main Methods:

Developed a 3D optical recording architecture by extending planar recording to hundreds of layers.
Created a novel optical recording medium using a photoresist film doped with aggregation-induced emission (AIE) dye.
Utilized femtosecond laser beams for optical stimulation and a deactivating beam to achieve super-resolution recording spots, breaking the optical diffraction limit.

Main Results:

Achieved petabit-level storage capacity by implementing a 3D recording architecture.
Demonstrated a super-resolution recording spot size below the diffraction limit.
The AIE dye mechanism enabled efficient and controllable optical recording and inhibition.

Conclusions:

The developed 3D ODS technology significantly increases storage capacity beyond current limitations.
This super-resolution optical recording method provides a pathway to exabit-level storage by stacking nanoscale disks.
The technology is crucial for future big data centers requiring high-density, long-term archival solutions.