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Thermal Stress Wave-driven Regime in Femtosecond Laser-induced Nanomaterial Transfer Revealed by Ultrafast Electron Microscopy and Atomic Simulation
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DOI：10.1016/j.ijmachtools.2026.104366.png)
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Abstract
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• A femtosecond laser-induced thermal stress wave-driven regime was revealed. • Deposition behavior of the transferred nanomaterials strongly depends on laser fluence. • Nanoisland jumps within tens of picoseconds and melts on the nanosecond timescale. • Tensile stress generated from compressive stress reflection propels the nanoisland to jump. • Transfer is governed by the directionally propagating stress wave instead of static stress.
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