Finally, the signals are transmitted through a circular array of antennas to produce a vortex beam with the desired properties. After performing advanced simulations to fine-tune the filtering ...

The researchers also introduced a spiral phase plate to the 1,553-nm beam before frequency mixing, resulting in the generation of a vortex beam carrying orbital angular momentum. This marks the ...

Scientists have devised a method of non-invasively tearing the objects apart, using what are known as "acoustic vortex beams ... by a piezoelectric transducer array. It's guided by an accompanying ...

The team shined a laser beam on a spatial ... Using optical vortex laser induced forward transfer to fabricate a twisted ferrite microcrystal array, APL Materials (2024). DOI: 10.1063/5.0209114 ...