Imec presents a new ‘hourglass’ model for modeling low-current filamentary switching in amorphous HfO2 RRAM. The model describes the set and reset processes as a dynamic oxygen vacancy flow between ...

It would be easy to distinguish between a chicken, a fish or an elephant. Yet, during their early stages of development, these species share a striking similarity. Although their embryos have distinct ...

It was first observed two centuries ago that many animal embryos converge on a similar form during development, only to diverge afterwards. This temporal 'waist' in the so-called hourglass model of ...

The mid-embryonic stages are strikingly similar in animals, plants and algae, revealing the shared crucial stages in the evolution of complex life forms. Recent observations in brown algae from ...