Snakes on a plane: This atomic-resolution simulation of a two-dimensional peptoid nanosheet reveals a snake-like structure never seen before. The nanosheet’s layers include a water-repelling core (yellow), peptoid backbones (white), and charged sidechains (magenta and cyan). The right corner of the top layer of the nanosheet has been "removed" to show how the backbone’s alternating rotational states give the backbones a snake-like appearance (red and blue ribbons). Surrounding water molecules are red and white. (Credit: Ranjan Mannige, Berkeley Lab)
Computer sims and microscopy research at Berkeley Lab yield first atomic-resolution structure of a peptoid nanosheet. Scientists aspire to build nanostructures that mimic the complexity and function of nature's proteins, but are made of durable and synthetic materials. These microscopic widgets could be customized into incredibly sensitive chemical detectors or long-lasting catalysts, to name a few possible applications. But as with any craft that requires extreme precision, researchers must first learn how to finesse the materials they'll use to build these structures. A discovery by scientists from the Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab), and reported Oct. 7 in the advance online publication of the journal Nature , is a big step in this direction. The scientists discovered a design rule that enables a recently created material to exist.
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