![]() It did not spontaneously form a Pickering emulsion, showing that the mere presence of stabilizing particles was insufficient to make the emulsion happen. The water and perfluorinated oil stayed in separate layers. Then they gently mixed the nanoparticles with water and perfluorinated oils, and waited.īut no matter how long they waited, the mixture did not emulsify. Onto the gold nanoparticles they added polyethylene glycol molecules with a hydrophilic (“water-loving”) end, and then added hydrophobic (“oil-loving”) molecules to the other side of the nanoparticles. The researchers chose gold nanoparticles as the solid particles that would stabilize the Pickering emulsion. They found suggestive evidence that cavitation, meaning the creation of bubbles, may be the key. Researchers from the University of Washington teamed up with colleagues at Argonne National Laboratory to investigate exactly how sonication - that is, exposing the ingredients to powerful sound waves - creates Pickering emulsions of these valuable medical compounds. Using a combination of ultrasound and laser pulses, these emulsions can simultaneously provide contrast and break up blood clots, making them potentially useful for doctors treating victims of stroke and embolism. Pickering emulsions using perfluorinated oils have recently gained a following in the medical community as potential imaging agents. Their findings should lead to more efficient manufacturing of drug, food, and chemical emulsions, as well as medical applications, in the future. Department of Energy’s Advanced Photon Source (APS) to understand how sound waves overcome the energy barriers to Pickering emulsification. Mechanical forces such as shaking or ultrasound waves have to be applied to overcome the repulsions. ![]() Multiple repulsive forces involving electrical charge or particles shape work to prevent emulsification. Despite how common Pickering emulsions are, the mechanics of how they form are not well understood. ![]() ![]() Pickering emulsions are just as common in cosmetics, agrochemicals, and drug delivery systems as they are in food preparations, and for the same reasons: instead of using a surfactant (like a soap) to keep oil and water mixed, they use a particle such as a protein or metal oxide that can have additional functionality beyond simply keeping the emulsion together. MULTIPASS VACCINE CARD SKINThe outside is made of marble-textured leather, which keeps things feeling very stylish, even when the world outside is not remotely cute.Homogenized milk, skin cream, and mayonnaise are just a few examples of Pickering emulsions, mixtures of oil and water stabilized with solid particles. Perhaps keep your ID in the other one or even the vaccine card of a partner or child so they are all in one place. This card protector comes with two slightly larger slots, so you can keep more than one card in there. These are so important, they may even be something you want to consider stocking up on as last-minute holiday gifts and stocking stuffers. We need to do all we can do to keep it safe!įrom travel to sporting events to wherever life takes you next, keep your COVID-19 vaccine ID card safe and accessible with a vaccination card holder. These four-inch-by-three-inch cards are a necessity to live these days in many parts of the country and are also necessary for travel. Much as we may use a case for our passport or photo ID, vaccination card holders keep our cards clean and in ideal condition. One saving grace is vaccination card holders. ![]()
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