What makes Azobenzene molecules particularly interesting is their ability to undergo changes in their shape in response to specific types of light,

Making tiny machines and light-controllable drugs as well as improving existing technology will be possible thanks to a new discovery by scientists at the Hebrew University of Jerusalem (HU), the Weizmann Institute of Science in Rehovot and Tampere University in Finland. 

The new discovery enables scientists to change the shape of very-versatile molecules called azobenzene using visible light that is more practical and safer than ultraviolet light (UV) that was used until now. They can molecule can switch between two different forms by light – but the two forms are in equilibrium, which means that a mixture present that prevents optimal use for applications. Being able to control them with visible light, including red wavelengths, and enrich only one form opens up new possibilities for these applications, making them more efficient and accessible. 

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