Crystals on the move: If they are subjected to a strong light stimulus, crystals of the cobalt coordination compound [Co(NH3)5(NO2)]Cl(NO3) undergo sudden jumps and leap over distances 10(2)-10(5) times their own size to release the strain that accumulates in their interior. The first quantitative kinematic analysis of this phenomenon is reported. The observed effect could be employed for actuation on the macroscopic scale.
Precise measurement of bending kinematics induced by a photochemical reaction in a single crystal can be used to extract the kinetic parameters of the underlying reaction with high accuracy.
Kristalle in Bewegung: Bei Bestrahlung mit Licht springen und hüpfen Kristalle der Cobalt‐Koordinationsverbindung [Co(NH3)5(NO2)]Cl(NO3) und legen dabei Distanzen zurück, die 102‐ bis 105‐Mal größer als sie selbst sind, um die Spannung abzubauen, die sich in ihrem Inneren aufbaut. Die erste quantitative kinematische Analyse dieses Phänomens wird beschrieben. Der beobachtete Effekt könnte für Antriebe im makroskopischen Maßstab genutzt werden.
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