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Optimal conditions and generation mechanism of jet atomization for uniform distribution of nano- and micro-droplets
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This study developed a jet atomization technique using a diaphragm to uniformly distribute nano- and micro-particles in droplets on substrates. The method prevents particle aggregation and may have applications in material deposition and surface treatment.
Abstract This study provides a jet atomization technique to uniformly distribute nano- and micro-particles on the substrate by enclosing them in water droplets to avoid their aggregation. Jet atomization is a two-dimensional uniform spray and is generated using a diaphragm. The ideal jet atomization was achieved when the diaphragm was highly hydrophilic (contact angle 9.8°), and the spring constant was approximately 1.27 N m −1 . The several experiments in this study supported the idea that jet atomization was caused by surface wave formed on the water film, rather than by boiling or cavitation of the water. The resonance between the diaphragm and the surface wave was investigated using a simple model. The results of this study can be expected to make fundamental contributions to pharmacy, medicine, and environmental science, where the uniform distribution of fine particles such as drugs, DNAs, and microplastics is required for the analyses of their properties.
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Acoustic analysis of jet atomization for uniform dispersion of nano- and micro-droplets
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Researchers analyzed the acoustic signals produced during ultrasonic atomization — a process used to create very fine liquid droplets — and found that surface properties significantly affected how droplets formed and dispersed. This technology has applications in drug delivery, coating, and potentially in creating reference microplastic particles for laboratory testing.
A selective separation method for microplastics using ultrasonic jet atomization
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Researchers developed a selective microplastic separation method using ultrasonic jet atomization, demonstrating that a diaphragm-based system can enclose microplastics in water into atomized mist and emit them into the air, with particle separation correlated to acoustic energy.
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Researchers demonstrated that when bubbles burst in contaminated water, particles larger than previously assumed can be transported into jet drops and become highly concentrated, with enrichment depending on bubble size and particle position on the bubble surface.
Wettability of microplastic particles affects their water-to-air ejection via bubble bursting.
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Researchers experimentally investigated how the wettability of microplastic particles influences their transfer from water to air via bubble bursting, using 1 micron diameter polystyrene particles with contrasting hydrophilic and hydrophobic surface modifications and finding that particle wettability significantly affects enrichment into aerosolized jet droplets.
Water–air transfer rates of microplastic particles through bubble bursting as a function of particle size
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Researchers studied how microplastic particles transfer from water to air through bubble bursting, testing polystyrene particles of various sizes. The study found that smaller particles were ejected more efficiently by jet drops, with transfer rates depending on particle size and air flow, suggesting that bubble bursting at water surfaces may be an important but underrecognized pathway for microplastic transport into the atmosphere.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.