The mission of the National Park Service has always been to set aside and preserve land for the enjoyment of future generations. But as parks spring up around areas of natural splendor or cultural ...

The vibrational motion of an atom in a crystal propagates to neighboring atoms, which leads to wavelike propagation of the vibrations throughout the crystal. The way in which these natural vibrations ...

Mechanically responsive molecular crystals are extremely useful in soft robotics, which requires a versatile actuation technology. Crystals driven by the photothermal effect are particularly promising ...