Spark Discharge Assisted Micro/Nanomaterials Electrostatic Dispersion and Alignment in Gas Phase
Currently,a variety of new micro/nanomaterials with exceptional performance are emerging at a rapid pace,but their applications have yet to reach their potential.The critical reason is the agglomeration caused by the large surface ar-ea,high surface energy and activity,resulting in the loss of their original properties.Researchers tend to be more enthusiastic about developing micro/nanomaterials than investigating dispersion techniques,which are crucial for their industrial application.To address this issue,we present a universal,one-step method that achieves rapid and direct disper-sion in the gas phase.Our approach is based on the manipulation of electrostatic fields,which involves the introduction of spark discharges to progressively exfoliate and disentangle tightly packed aggregate structures of micro/nanomaterials.We experimentally determined the spark form and inducing method suitable for dispersion,and clarified the effect of the magnetic field induced by the discharge current on dispersion.Furthermore,we have established the motion equation of micro/nanomaterials with an aspect ratio in electric field,and clarified the principle of spark-coupled electric field in-duced dispersion.We have also demonstrated the functions of launching and transferring,making our approach widely applicable.With its simple process,reliable results,wide applicability,and designability,this principle can be potentially extended to industrial continuous manufacturing and production.
micro/nanomaterialsagglomerationspark dischargeselectrostatic manipulationdispersion and alignmentmanufacturing and production
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