The
increasing interest in various nanoparticles (NPs) with well-defined
properties requires their convenient and efficient production. Here,
we exploit a new proposed scheme for pulsed laser ablation in liquid
(PLAL), where nanosecond laser pulses process a 45° tilted, rotating
copper (Cu) disc, partially submerged into ethanol. This disc rotation
spreads a thin ethanol layer on its surface. The generated plasma,
formed following the laser impact, led to film splashing and caused
NP accumulation in the ethanol pool. Analysis of fast camera frames
and measured acoustic-wave (AW) amplitudes suggest mechanistic insight
and allow optimizing the parameters. The laser fluence, ablation time,
and particularly the rotating target speed, controlling the layer
thickness, are varied to determine their effect on the ablation products.
The observed dependence of the measured AW amplitudes, surface plasmon
resonance intensities, and power-specific productivities on laser
fluence match the calculation results, accounting for the effective
laser energies generating the plasma. This promising technique enables
the continuous synthesis of crystalline Cu NPs with high efficiency
and concentration, providing a basis for further optimization of solid
target ablation toward the achievement of specific particles for various
applications.