ckwu writes "Scientists at Boston University have put together an inexpensive microelectromechanical machine that can direct atoms onto a surface in a controlled manner (abstract). The device—which acts as a moving stencil—can lay down such precise, complex patterns that the technique is akin to writing with atoms, the researchers say. They've used the machine to draw rings and infinity symbols out of gold atoms, but the technique should be compatible with almost any material."
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