Ever run out of storage on your phone or wished your laptop had more space without paying extra for a higher-capacity model? A new materials breakthrough suggests that future devices could hold far more data than today’s NAND flash storage allow — all in the same space.
A research group led by Professor Yoichi Murakami at the Institute of Science Tokyo, has developed a covalent organic framework (COF) structure that uses tiny “molecular rotors” to store information. Their findings were published in the Journal of the American Chemical Society and highlighted by Notebookcheck.
Unlike today’s semiconductor-based memory, this COF crystal is designed with ultra-low density, giving the molecular rotors enough space to spin and hold orientation. Each rotor acts like a switchable bit, potentially serving as the building block for non-volatile memory such as ROM.
To be useful, these rotors had to meet four conditions: respond to an electric field, keep their position stable at room temperature, rotate without interference, and withstand high temperatures.
According to the researchers, the material checks all four boxes. The rotors remain stable at everyday conditions, can endure up to 150°C, and the overall framework doesn’t break down until close to 400°C. Data orientation can also be switched reliably under strong electric fields or when heated above 200°C.
This is the first time such performance has been achieved with a COF material, addressing a long-standing obstacle in molecular memory research. While practical storage devices based on the technology are still some years away, the approach could eventually allow far denser storage than is possible today.
If developed further, molecular rotor memory could make it possible to fit vastly more data into smaller chips—potentially impacting everything from smartphones and wearables to IoT devices.
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