Figure 1. Schematic illustration of the three-wavelength modulated multi-directional walker robot.
Just like one reviewer said, “controlling the locomotion by turning on and off the light is easier than scanning the light on the actuator with right speed and in right position.” We believe that this strategy could be further adopted to build four or even more independent photothermal conversion systems in hierarchical structured polymeric matrices to synthesize multi-wavelength modulated soft actuators with more functionalities. In our lab, this selective stimulation strategy is now applied in fabricating microscale soft robots with complex actuation modes through 3D printing technique. More exciting results will be reported in the near future.
Acidity is an important aerosol property, as it impacts numerous physicochemical properties. However, models either neglect to include aerosol acidity, or have not been robustly tested for various environments. We show that the atmosphere is generally acidic, and models miss this important feature.
Endoperoxidase NvfI catalyzes the incorporation of “three” oxygen atoms, including an endoperoxide and a hydroxyl group, into its substrate asnovolin A, in a single enzyme turnover reaction through a different mechanism from those of previously characterized endoperoxidases.
Ring expansion to “grow” larger N-heterocycles often uses cycloaddition of strained aza-rings with π-bonds. Here, we report a formal cross-dimerization between three-membered aza-heterocycles and 3- and 4-membered-ring ketones, providing a straightforward means of assembling diverse N-heterocycles.
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