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Two reports of ferromagnetism in n-type semiconductors suggest promising avenues for fabricating spintronics devices compatible with current silicon-based electronics.
A face-centred-cubic lattice is a common structure, but one in which the constituent elements are spheres made of concentric layers of aluminium, strontium, bismuth and oxygen atoms is an unexpected discovery with unique potential.
The emergence of nanoscale features — such as magnetic and electronic patterns — in materials that are otherwise homogeneous provides a potential alternative to conventional top-down and bottom-up fabrication techniques. The way these features arise in manganite crystals is contentious, but could be explained using elasticity theory.
Vesicles for drug delivery should ideally be robust and able to release their cargo at the desired moment. A new type of vesicle, made of block copolypeptides, has exactly these characteristics.