Although RNA is a single-stranded molecule, researchers soon discovered ... these RNAs all share the same basic single-stranded chemical structure with, in some cases, higher-order structures ...

This structure has two helical chains each coiled round the same axis (see diagram). We have made the usual chemical assumptions, namely, that each chain consists of phosphate di-ester groups ...

Molecular electronics is a branch of nanotechnology that focuses on using individual molecules or nanoscale molecular structures as electronic components to create miniaturized circuits and devices.