Focusing light: An optical antenna just 50 nanometers wide at its base is used to target laser beams.
Credit: Seagate Technology/Nature Photonics
New publications, experiments and breakthroughs in information technology--and what they mean.
More Memory
A new device uses heat to fit extra bits on a hard disk
Source: "Heat-assisted magnetic recording by a near-field transducer with efficient optical energy transfer"
William Challener et al.
Nature Photonics 3: 220-224
Results: Researchers at Seagate have developed a way to deliver targeted pulses of heat to the magnetic areas of hard-disk drives. The technology should make it possible to write up to 20 times more data to disks than is possible today.
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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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