Patterns of microscopic discs, rings or letters can be added to microrobots or stretchy electronics with a dissolved sugar mixture
Gary Zabow/National Institute of Standards and Technology
A sugar mixture similar to hard candy studded with tiny metal discs or rings has been used to deposit patterns onto microscopic objects. This method of creating texture on small objects could be useful for biomedical robots or flexible electronics.or small electronic circuits more functionality, researchers often embellish their surfaces with patterns of even tinier objects, such as magnets. They often make these components on a flat, clean surface and then stamp them onto the bigger object.
But accurately applying them in this way becomes difficult when the receiving objects are not smooth, says at the National Institute of Standards and Technology in Colorado. He worked out how to use sugar and corn syrup to add micropatterns to even the most irregular and jagged objects.He first arranged micron-sized discs and rings of silver or platinum into a pattern, such as an array or a letter, and then poured a warm mixture of sugar and corn syrup over it. Adding corn prevents the sugar from crystallising and disrupting the pattern.
Zabow tested the method on objects ranging from micron-sized metal cubes and glass beads to grains of pollen, individual hairs and red blood cells. He says that because sugar is not toxic, this method could potentially be used for manufacturing
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