Photonic crystals are periodic optical structures that can control the flow of light. Multiple reflections from surfaces separated by a distance similar to the wavelength prevent an optical beam from ...

The crystalline form of a drug affects properties such as its solubility, stability, dissolution rate, bioavailability and tabletability, and so understanding the crystalline state is crucial for many ...

Boston, Massachusetts — Creatures that thrive on iron, sulfur, and other chemicals have been found trapped inside giant crystals deep in a Mexican cave. The microbial life-forms are most likely new to ...