Independent single-chain one-dimensional vdW crystals with a well-defined chemical structure are prepared, featuring a width of approximately 0.8 nm, a length reaching the micrometre scale and a single-chain ratio of up to 90%. Atomically smooth vdW interfaces, good crystallinity and air stability are demonstrated, and the chains show typical single-electron tunnelling behaviour.
- Pengxin Zhan
- Hao Wu
- Jian Zheng