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Fully Optical Control of Polarization Current Direction in a Cyanide-Bridged Trinuclear Complex.

Yu-Bo Huang¹, Sheng-Qun Su¹, Wen-Huang Xu¹

¹Institute for Materials Chemistry and Engineering and IRCCS, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan.

Angewandte Chemie (International Ed. in English)

|July 1, 2024

Summary

Researchers demonstrated rewritable polarization in [Fe2Co] crystals using light. This optical control enables non-contact data writing and reading, paving the way for advanced optical storage systems and next-generation memories.

Keywords:

electron transfer molecular Prussian blue analogue optical control polarization change write-read process

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Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals

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Published on: May 29, 2018

Area of Science:

Materials Science
Solid-State Physics
Optoelectronics

Background:

Light offers non-contact manipulation of ferroelectric material polarization.
Current methods lack direct current-based observation for non-contact write-read-erase processes.

Purpose of the Study:

Investigate photoinduced polarization switching in [Fe2Co] using visible light.
Achieve and demonstrate rewritable polarization for optical data storage.

Main Methods:

Utilized alternating irradiation with 785 nm and 532 nm light on [Fe2Co] crystals.
Employed 532 nm light for initializing polarization states (storing "1" or "0").
Used 785 nm light scanning for reading polarization states via current pulses.

Main Results:

Achieved reliable, rewritable polarization switching in [Fe2Co] crystals.
Demonstrated a distinct square wave pattern in polarization changes under alternating light.
Successfully read stored "1" states via current pulses and "0" states via no current signal.

Conclusions:

The study showcases the potential of [Fe2Co] for optical data storage applications.
The developed method offers efficient, non-contact, rewritable data storage and retrieval.
This research paves the way for next-generation memory technologies.