An image from an atomic force microscope shows a circuit with 17 memristors lined up in a row. Every memristor shares the same bottom wire (top left to bottom right), and each has its own top wire. The memristors are between the wires.
Credit: J. J. Yang, HP Labs
New publications, experiments and breakthroughs in nanotechnology--and what they mean.
New Circuit Element
The memristor could be useful for nonvolatile memory
Source: "The missing memristor found"
R. Stanley Williams et al.
Nature 453: 80-83
Results: Researchers at HP Labs have fabricated a memristor, or memory resistor--a fundamental electronic device that had been described theoretically but never produced until now. The amount of charge that flows through the device can be changed by exposing it to an electrical voltage. Applying a positive voltage lowers its resistance, and applying a negative voltage increases it. Furthermore, the change in resistance is proportional to the length of time the voltage is applied: the more the device is charged, the more electricity it conducts. Once set, the resistance stays the same until it's reset.
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This document is part of the “How-To Guide for Most Common Measurements” centralized resource portal. This tutorial provides a detailed guide for measurement and device considerations to take temperature measurements using thermocouples. Get an introduction to thermocouples, which are inexpensive sensing devices widely used with PC-based data acquisition systems. Also review some specific thermocouple examples and learn how thermocouples work and ways to integrate them into a data acquisition measurement system.
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