The current status of research on the carrier-mediated ferromagnetism in tetrahedrally coordinated semiconductors is briefly reviewed. The experimental results for III-V semiconductors, where Mn atoms introduce both spins and holes, are compared to the case of II-VI compounds , in which the ferromagnetism has been observed for the modulation-doped p-type Cd1−xMnxTe/Cd1−y−zMgyZnzTe:N heterostruc...

Mechanical strain plays a key role in the physics and operation of nanoscale semiconductor systems, including quantum dots single-dopant devices. Here, we describe design nanoelectronic device, where single nuclear spin is coherently controlled via acoustic resonance (NAR) through local application dynamical strain. The drives transitions by modulating quadrupole interaction. We adopt an AlN pi...

The analytical theory of acoustic phonons arising in the layers a nitride-based nanostructure, taking into account presence piezoelectric effect, was developed. Proposed is based on first obtained exact solutions system consisting equation motion for semiconductor medium and Maxwell equation. electronic spectrum renormalized by their interaction with via deformation potentials developed using m...

This paper reports a miniaturized piezoelectric accelerometer suitable for a small haptic actuator array. The accelerometer is made with zinc oxide (ZnO) nanowire (NW) grown on a copper wafer by a hydrothermal process. The size of the accelerometer is 1.5 × 1.5 mm², thus fitting the 1.8 × 1.8 mm² haptic actuator array cell. The detailed fabrication process of the miniaturized accelerometer is i...

using piezoelectric patches the stress concentration around a hole on a plate under tension is reduced and controlled. to attain the reduction in stress two placements for piezoelectric patches is investigated. the first location is top/bottom of the hole with compression induced strain and the second is left/right of the hole with tension induced strains to control the stress flow. the result ...

This chapter is dedicated to ultrasonic piezoelectric ceramic power transducers. These elements are now the most popular source of high power ultrasound and is used in many industrial applications. High power ultrasonic waves are generally used in such industrial processes as welding, acceleration of chemical reactions, scavenging in gas medium, echo sounding and underwater communication (sonar...