Double bubble comes off in a pinch.Scientists at Harvard University Harvard University, mainly at Cambridge, Mass., including Harvard College, the oldest American college. Harvard College Harvard College, originally for men, was founded in 1636 with a grant from the General Court of the Massachusetts Bay Colony. have nestled droplets inside droplets by squeezing three concentrically arranged streams of fluids into a glass tube. The double droplets could be useful for encapsulating food additives food additives, substances added to foods by manufacturers to prevent spoilage or to enhance appearance, taste, texture, or nutritive value. By quantity, the most common food additives are flavorings, which include spices, vinegar, synthetic flavors, and, in the and components of cosmetics. The innermost in·ner·most adj. 1. Situated or occurring farthest within: the innermost chamber. 2. Most intimate: one's innermost feelings. n. (1) and outermost out·er·most adj. Most distant from the center or inside; outmost. outermost Adjective furthest from the centre or middle Adj. 1. (3) fluids shown here are silicon oil, and the middle fluid (2) is a water-glycerol mixture. The two inner fluids, flowing right to left, pinch off (at arrow) to form uniform, two-layer microscopic droplets within the outermost oil. These double emulsions, described in the April 22 Science, are stabler than single emulsions, which are commonly used for encapsulating flavors and other types of food additives, says lead investigator David Weitz. With this technique, researchers can also create droplets harboring multiple droplets, each capable of storing a different flavor or fragrance. [ILLUSTRATION OMITTED] |
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