Scientists Fabricate Microscale ’Bicycle Chain’

Image: Courtesy of Barry Ritchey/Sandia National Laboratories

Scientists have manufactured a microscale bicycle chain comprised of silicon links thinner than a human hair that behaves just like its regular-sized counterpart. The tiny chain system could one day help power microscopic devices.

Ed Vernon, a technologist at Sandia National Laboratories, designed and patented the 50-link silicon microchain (see image), which was built by the lab’s Microelectronics Development Laboratory (MDL). The centers of the tiny links are separated by just 50 microns. The links can rotate 52 degrees in either direction with respect to their counterparts in the chain without breaking the support structure. Such flexibility, the scientists note, means multiple gears powered by the chain need not lie in a straight line.

Such a gear and chain mechanism could conceivably replace the multiple drivers currently required to run microelectromechanical systems (MEMS) motors. “All those drives take up a lot of real estate on chips,” Vernon notes. A single chain, however, could rotate many drive shafts or drive a MEMS device from a motor situated at a distance. But MEMS researcher Kaigham Gabriel of Carnegie Mellon University observes that “there are very few applications in the commercial space that require continuous rotary motion or the translation thereof.” He also cautions that microscopic gears tend to lock together less tightly than do macroscopic ones. One thing is for certain, any applications that do come of the new work are a long way off. Says Vernon: “I expect it will be three to four years before you’ll see anything this complex out in industry.”

Media Contact

Sarah Graham Scientific American

All latest news from the category: Materials Sciences

Materials management deals with the research, development, manufacturing and processing of raw and industrial materials. Key aspects here are biological and medical issues, which play an increasingly important role in this field.

innovations-report offers in-depth articles related to the development and application of materials and the structure and properties of new materials.

Back to home

Comments (0)

Write a comment

Newest articles

Frequency translating add/drop filters designed for on-chip light manipulation

New filters could benefit data communication, quantum information processing and optical neural networks. Researchers report the development of frequency translating add/drop filters based on electro-optically modulated photonic molecules. The new…

How a bacterium may help solve the plastic pollution crisis

Researchers from Nara Institute of Science and Technology find that the bacterium Ideonella sakaiensis can not only degrade petroleum-based plastics but can also sustainably produce biodegradable plastics. Plastic pollution is…

New technique paves the way for perfect perovskites

Next-gen solar material could outshine other solar cells. An exciting new solar material called organic-inorganic halide perovskites could one day help the U.S. achieve its solar ambitions and decarbonize the…

Partners & Sponsors