A quantum-confined device (100) and method for manufacture thereof. The device (100) comprises a substrate (10) having at least one protrusion (12) and a layer of a two-dimensional material (14) arranged thereupon. The layer of the two-dimensional material (14) is arranged on the substrate (10) and the at least one protrusion (12), the at least one protrusion (12) causing localised strain in the layer of the two-dimensional material (14) to form a quantum dot or a quantum wire at the region of localised strain.