![]() ![]() Based on this mechanism, sending liquid such as oil into the swirling water instead of gas and it able to be emulsified. * Corresponding author: “gas–liquid two-phases mixed flow” mechanism that fine bubble generation uses rapidly swirling water, which shear gas and making small bubbles in water. Weitz and Liang-Yin Chu,? Lab Chip, 2011, 11, 1587 DOI: 10.Kaiki Amagu 1, Riho Okajima 1, Moe Shimizu 2, Makoto Nishimoto 3, Kazuhito Nagayama 4, Takashi Hata 4, Yusuke Nishiuchi 4 and Kaori Tada 4 *Īdvanced Course of Material Engineering, National Institute of Technology (KOSEN), Kochi College, 200-1 Monobe Otsu, Nankoku-city, Kochi 783-8508, Japanĭepartment of Material Science, National Institute of Technology (KOSEN), Wakayama College, 77 Noshima, Nada-cho, Gobo-city, Wakayama 644-0023, Japanĭepartment of Applied Chemistry and Biochemistry, National Institute of Technology (KOSEN), Wakayama College, 77 Noshima, Nada-cho, Gobo-city, Wakayama 644-0023, Japanĭepartment of Social Design Engineering, National Institute of Technology (KOSEN), Kochi College, 200-1 Monobe Otsu, Nankoku-city, Kochi 783-8508, Japan Harriet Brewerton Link to journal articleĬontrollable microfluidic production of multicomponent multiple emulsionsWei Wang, Rui Xie, Xiao-Jie Ju, Tao Luo, Li Liu, David A. The team now intend to explore the full potential of their device and promote its application in different areas. ’This beautiful work provides a very clever way to extend the applicability and uses of glass-based microfluidics,’ he says. Ho Cheung Shum, an expert in emulsions at the University of Hong Kong, in China, says: ’Such fine droplet engineering finesse creates new opportunities to explore topics such as reaction-on-demand, encapsulation of incompatible actives and templated assembly of artificial cell aggregates.’Īlberto Fernandez-Nieves, an expert in microfluidics at the Georgia Institute of Technology, US, is also impressed with the work. As the oil droplets move through the system, they merge in the main channel to form the multi-component emulsions. ![]() The device - a droplet maker, connector and liquid extractor - can be arranged in different combinations to generate different emulsions. The team tested their system using different coloured oil droplets in water. Optical micrographs of monodisperse sextuple-component triple emulsions, containing one water-in-oil single emulsion and two oil-in-water-in-oil double emulsions Liang-Yin Chu at Sichuan University and colleagues have designed a microfluidic device capable of producing multi-compartment multiple emulsions. Chu says: ’We hope the novel type of emulsions in our work will open a new gate for the applications of emulsions in the fields of template synthesis, synergistic delivery, micro reactions, bioassay and so on.’ Control over such multi-compartment levels would allow more precise encapsulation and the development of more advanced materials. Microfluidic devices have been designed to produce such systems, but controlling the number, size and ratio of droplets at each level is difficult, especially when developing a system that has different types of emulsion droplets at the same level. Multiple emulsions are liquid systems in which emulsion droplets are placed inside each other, each droplet smaller than the last, creating ’levels’. This system could be used to encapsulate incompatible drug ingredients and to design multi-compartment materials, they say. Scientists in China have developed a device that can control the production of multiple emulsion systems.
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