Use a virtual scanning tunneling microscope (STM) to observe electron behavior in an atomic-scale world. Walk through the principles of this technology step-by-step. First learn how the STM works. Then try it yourself! Use a virtual STM to manipulate individual atoms by scanning for, picking up, and moving electrons. Finally, explore the advantages and disadvantages of the two modes of an STM: the constant-height mode and the constant-current mode.
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Requirements
The Java Runtime Environment version 5 (sometimes referred to as 1.5) or later with Java Webstart is required to run any of the activities. You can download it at: java.com.
This activity is a part of the Concord Consortium's 