Properties of Doped GaSb Whiskers at Low Temperatures.

Temperature dependencies of GaSb whiskers' resistance doped with Te to concentration of 1.7 × 10 cm were measured in temperature range 1.5-300 K.

Nanoscale Conductive Channels in Silicon Whiskers with Nickel Impurity.

The magnetization and magnetoresistance of Si whiskers doped with to boron concentrations corresponding to the metal-insulator transition (2 × 10 cm ÷ 5 × 10 cm) were measured at high magnetic fields up to 14 T in a wide temperature range 4.2-300 K. Hysteresis of the magnetic moment was observed for Si p-type whiskers with nickel impurity in a wide temperature range 4.

Split-mode ultrasonic transducer.

A split-mode ultrasonic transducer is investigated in both theory and experiment. This transducer is a two-dimensional structure of periodically poled domains in a ferroelectric wafer with free surfaces. The acoustic vibrations are excited by a radio frequency electric current applied along the length of the wafer, which allows the basal-plane surfaces to be free of metal coatings and thus ready for further biomedical applications.

Observation of acoustical memory in LiNbO3.

A new physical effect is reported. In single crystals of lithium niobate (LiNbO3), we have observed an acoustical memory effect. An acoustical tone burst is stored inside the crystal and reemitted at a later time.