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Wire explosion technique has been widely studied in recent years to produce nanoparticles of different materials due to the enormous outstanding characteristics of nanomaterials as well as the advantages of wire explosion technique1. In the wire explosion process for preparation of nanoparticles, the wire firstly melts, vaporizes and then generates a mixture of metal vapor and liquid droplets. The...
Microsecond explosion of metallic wires has drawn attention of many researchers due to its complicated physical process and various applications, such as production of metal nanoparticles1. When a high density pulsed current passes through a thin wire, it quickly melts, vaporizes and ionizes. The medium pressure and charging voltage have significant effect on the development of the generated plasma2...
The individual homogeneous nucleation, heterogeneous condensation, coagulation and the complete process of them are investigated numerically based on the nodal method. Results of nanoparticle size distribution (NPSD) due to above processes are also presented and discussed in this paper. At a given temperature, nanoparticles are first formed through homogeneous nucleation process. Then heterogeneous...
TiN nanoparticles with an average diameter of 15nm or so were prepared by the reaction of spongy Ti and NH 4 Cl at about 530°C. The electromagnetic parameters of the TiN nanoparticles/wax composite were measured by a coaxial line method. The nanoparticles exhibit good microwave absorbing ability owing to dielectric loss, and the measured reflection loss reaches a minimum value of −16.1dB at...
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