David Ritchie – författare

Semiconductor Nanodevices: Physics, Technology and Applications explores recent advances in the field. The behaviour of these devices is controlled by regions of nanoscale dimensions which typically determine the local density of electronic states and lead to the observation of a range of quantum effects with significant potential for exploitation.

The book opens with an introduction describing the development of this research field over the past few decades which contrasts quantum-controlled devices to conventional nanoscale electronic devices where an emphasis has often been placed on minimising quantum effects.

This introduction is followed by seven chapters describing electrical nanodevices and five chapters describing opto-electronic nanodevices; individual chapters review important recent advances.

These chapters include specific fabrication details for the structures and devices described as well as a discussion of the physics made accessible. It is an important reference source for physicists, materials scientists and engineers who want to learn more about how semiconductor-based nanodevices are being developed for both science and potential industrial applications.

The section on electrical devices includes chapters describing the study of electron correlation effects using transport in quantum point contacts and tunnelling between one-dimensional wires; the high-frequency pumping of single electrons; thermal effects in quantum dots; the use of silicon quantum dot devices for qubits and quantum computing; transport in topological insulator nanoribbons and a comprehensive discussion of noise in electrical nanodevices.

The optical device section describes the use of self-assembled III-V semiconductor nanostructures embedded in devices for a range of applications, including quantum dots for single and entangled photon sources, quantum dots and nanowires in lasers and quantum dots in solar cells.

Our world has gone mad -

politically and otherwise

But why and how did it come to this?

A wry look at the state of the UK (and beyond), focusing on the appalling standards of governance and leadership we see today, and the ineffectiveness of our myriad institutions. Starting with a review of the 2016 referendum and its aftermath, the author moves on to consider the wider problems we are facing. This includes a close look at the work of our regulatory bodies, who have become a billion pound industry covering everything from regulation of the press to the funding of political parties, and communications to the supply of gas and electricity.

The book also considers the dreadful state of the criminal justice system; broadcasting, and the decline of the BBC, as well as asking why overseas aid is frequently sent to undeserving places and spent unwisely in places that need help.

This is a revealing investigation into the sheer incompetence of the state we are currently in, and the story of how we got here.