“…CuGeO 3 is well-known as the first inorganic spin-Peierls material and, as such, is a superb platform for exploring temperature, − magnetic field, − pressure, − and doping effects. − This system consists of edge-sharing CuO 6 octahedra that form quasi-one-dimensional chains along the crystallographic c -axis (Figure a). , The Cu centers are d 9 and therefore S = 1/2. The Cu atoms dimerize below the T SP = 14 K spin-Peierls transition, and spin gaps open because singlets are formed. , Vibrational spectroscopies reveal the coupled phonons. ,− The recent development of a suite of CuGeO 3 nanorods of different lengths (Figure b–d) offers the opportunity to unravel size effects on the dynamic properties and at the same time explore how and why the spin-Peierls transition is suppressed below a critical size ( d crit ≈ 450 nm). , Electron spin resonance reveals no sign of an antiferromagnetic state at small sizes, contrary to expectations based upon chemical substitution with Si, Zn, and Mg. − Instead, disorder emanating from the small surface layer and local changes in the Cu–O–Cu superexchange pathway that increase interchain interactions may place CuGeO 3 nanorods in the vicinity of a disorder-driven quantum critical point …”