Crystalline Thin Films Formed by Supramolecular Assembly for Ultrahigh-Density Data Storage

Crystalline organic films formed by self‐assembly of 2,2‐dimethyl‐α,α,α′,α′‐tetraphenyldioxolane‐4,5‐dimethanol and coumarin molecules can be used for ultrahigh‐density data storage. A 3 × 4 matrix pattern (see Figure) was recorded by applying voltage pulses between a scanning tunneling microscope tip and the film. Regulating the amplitude and width of the applied pulsed voltage allows a data storage density of about 1013 bits cm–2 to be achieved.