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Burning Terabyte CDs
A new device that tightly focuses
laser light could increase the density of optical data storage
Source: "Plasmonic Laser Antenna"
Ertugrul Cubukcu et al.
Applied Physics Letters 89: 093120
Results: By building a nano antenna directly onto a commercial semiconductor laser, Ken Crozier and Federico Capasso of Harvard University were able to focus light with a wavelength of 830 nanometers to a spot 40 nanometers wide. The experimental work was done by graduate students Ertugrul Cubukcu and Eric Kort.
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Manufacturing in the United States is in trouble. That's bad news not just for the country's economy but for the future of innovation.
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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