Light bending: An image produced by a ¬scanning electron microscope shows a wedge-shaped prism. The device was carved from layers of metal and insulating material (inset) punched with rectilinear holes.
Credit: Nature, Copyright 2008/Jason Valentine et al.
New publications, experiments and breakthroughs in materials--and what they mean.
Metamaterial Prism
A new material for ultrahigh-resolution microscopes
Source: "Three-dimensional optical metamaterial with a negative refractive index"
Xiang Zhang et al.
Nature 455: 376-379
Results: Researchers have fabricated a material that interacts with near-infrared light in a way that no naturally occurring material does. A prism made from the material has a negative refractive index: that is, it bends light in the direction opposite the one in which ordinary materials bend it.
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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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