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(a, b) DLS of material redispersed in water. (a) Cu2ONPs formed in the VFD with the glass tube at a 45° tilt angle and rotating at 7.5 k rpm, flow rate of water 0.25 mL/min, and the 1064 nm pulsed laser operating at 600 mJ and irradiating a copper target. (b) CuONPs formed after heating the Cu2ONPs suspension in air at 50 °C for 10 h.
