Phenolic compounds are widely found in nature. Catechol, for example, forms reversible complexes with metal ions, which provides mussel byssal cuticles with combined extensibility and hardness.

Fluidics is the application of flowing substances, such as liquids and gases, to system control and logic operations. Fluidics is analogous to electronics but uses flow and pressure instead of ...

Hueber, E. F., Klin. Wochenschr., 19. 664 (1940).