![]() This makes it difficult to manipulate particles independently of one another or through complex patterns. Most current setups use multiple sound sources placed around a liquid-filled chamber that creates a checkerboard pattern of areas that can trap and move particles in lockstep with one another. The technology also provides an avenue for patterning different materials before using any number of techniques to fix them in place to create new types of materials.ĭespite all of its potential, the technology does have its limitations. They can keep certain reagents and chemicals separated before allowing them to mix in precise amounts to control reactions. ![]() In the biomedical realm, acoustic tweezers can trap, rotate and move particles or organisms for inspection, sorting or other applications. Because no physical object is touching the particles, the technique is gentle, offers no biocompatibility issues and requires no labels, making it an enticing choice for working with delicate biomolecules. The research appears online August 18 in the journal Science Advances.Īcoustic tweezers are an emerging technology that uses sound waves to manipulate small particles suspended in liquid. The technology offers a new suite of features to the fast-developing platform of acoustic tweezers that has applications in fields such as chemical reaction control, micro-robotics, drug delivery, and cell and tissue engineering. Dubbed a “shadow waveguide,” the technique uses only two sound sources to create a tightly confined, spatially complex acoustic field inside a chamber without requiring any interior structure. PhD Plus Professional Development ProgramĮngineers at Duke University have devised a new approach to using sound waves to manipulate tiny particles suspended in liquid in complex ways.Mechanical Engineering & Materials Science.Diversity, Equity, Inclusion & Community.Duke Pratt School of Engineering Apply Menu
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