Cell stimulation and calcium mobilization by picosecond electric pulses

Ultrafast magnetization reversal by picosecond electrical pulses

The field of spintronics involves the study of both spin and charge transport in solid-state devices. Ultrafast magnetism involves the use of femtosecond laser pulses to manipulate magnetic order on subpicosecond time scales. We unite these phenomena by using picosecond charge current pulses to rapidly excite conduction electrons in magnetic metals. We observe deterministic, repeatable ultrafas...

Cell electrofusion using nanosecond electric pulses

Electrofusion is an efficient method for fusing cells using short-duration high-voltage electric pulses. However, electrofusion yields are very low when fusion partner cells differ considerably in their size, since the extent of electroporation (consequently membrane fusogenic state) with conventionally used microsecond pulses depends proportionally on the cell radius. We here propose a new and...

Heating of opaque surfaces by picosecond laser pulses

Heat conduction after the application of a short laser pulse on opaque matter is calculated assuming simplifying conditions. The effect of the simplifications on real systems is discussed. It is found that Fourier’s law may reasonably be applied considerably above the temperature of vaporization of the substrate. Calculated and experimental ablation at nickel surfaces using fluences below thres...

Generation of single skyrmions by picosecond magnetic field pulses

Thermal accumulation effect in three-dimensional recording by picosecond pulses

In-bulk recording without cracking in borosilicate glass by high repetition rate (80 MHz) 12 ps pulses at 355 nm wavelength is demonstrated and discussed. The theoretical model of a “hot-line” scan and thermal accumulation qualitatively well describes the experimental results. The analytical expression of a thermally induced stress was obtained. © 2004 American Institute of Physics. [DOI: 10.10...