Technology image of the week: multiple integrated circuits destined for the brains of Europe’s future space missions
A valley valve and electron beam splitter
Developing alternative paradigms of electronics beyond silicon technology requires the exploration of fundamentally new physical mechanisms, such as the valley-specific phenomena in hexagonal two-dimensional materials. We realize ballistic valley Hall kink states in bilayer graphene and demonstrate gate-controlled current transmission in a four-kink router device. The operations of a waveguide, a valve, and a tunable electron beam splitter are demonstrated. The valley valve exploits the valley-momentum locking of the kink states and reaches an on/off ratio of 8 at zero magnetic field.
On the Revival of the “Quarterly Capitalism” Discussion
Ok, I’m a little late with this, but, um, he might kind of have a point… In speaking with some of the world’s top business leaders I asked what it is that would make business (jobs) even better in the U.S. “Stop quarterly reporting & go to a six month system,” said one. That would … Continue reading "On the Revival of the “Quarterly Capitalism” Discussion"
New: The Datacenter as a Computer: Designing Warehouse-Scale Machines, Third Edition
Five years ago when Google published The Datacenter as a Computer: Designing Warehouse-Scale Machines it was a manifesto declaring the world of computing had changed forever. Hop aboard or be left behind at the station. Since then the world has chosen to ride along with Google. The world is still changing, so Google published a new edition: The Datacenter as a Computer: Designing Warehouse-Scale Machines, Third Edition. What's different?