Ruthenium-based single-crystal optical actuator achieves 100% conversion

April 18, 2025

In a study published in Nature Communications, researchers created a ruthenium-based single-crystal optical actuator achieving 100% reversible conversion between three distinct photoisomeric states enabling precise control over molecular states.

Ruthenium-based single-crystal optical actuator achieves 100% conversion image — The asymmetric unit of the three crystal structures of trans-[Ru(SO2)(NH3)4(4-bromopyridine)]tosylate2] captured in each of its isomeric-state configurations. Hydrogen atoms and tosylate counterions are omitted for clarity.

Scientific Achievement

Researchers have developed a ruthenium-based single-crystal optical actuator that can achieve 100% conversion between three distinct photoisomeric states using light and temperature control that is 100% reversible.

Significance and Impact

This work expands the potential of photonic materials, enabling precise control over molecular states for applications in optical data storage, optomechanics and advanced microrobotics.

Research Details

Variable-temperature light-assisted atomic force microscopy (AFM) and single crystal optical absorption experiments. were performed at CNM.

DOI: 10.1038/s41467-025-56795-w

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