Do you keep music or tax files on compact discs you bought at a big box store? Well any money you saved by buying cheap CDs could be lost in a hurry. There are some reports that cheap CDs only last two years or so. Cutting corners on materials’ quality exponentially increases the potential for damage from poor handling or storage practices. You have a couple options: 1) Buy high-quality CDs and be careful when handling or 2) Practice extremely careful storage and handling with special technology.
One way to protected CDs is to pay a quarter for a special plastic sleeve developed by Bell Labs. The sleeve features a semiconductive plastic film or sheet. The base polymer is typically polyethylene or polyester that is chemically reacted with conductive copper and other ingredients to form a covalently bonded, homogeneous structure. If someone walks on a carpet and then touches a CD, they can discharge electricity that can locally oxidize a region of the aluminum layer embedded in the CD. The oxidized aluminum will no longer reflect a CD drive’s laser light properly, so all data recorded in the affected area ceases to be readable. Bell Labs licensed the idea to a company called Intercept Technology.
A self-propelled robot developed by a team of researchers headed by MIT promises to detect leaks quickly and accurately in gas pipelines, eliminating the likelihood of dangerous explosions. The robot may also be useful in water and petroleum pipe leak detection.
Aerojet Rocketdyne has built and successfully hot-fire tested an entire 3D-printed rocket engine. In other news, NASA's 3D-printed rocket engine injectors survived tests generating a record 20,000 pounds of thrust. Some performed equally well or better than welded parts.
Researchers at MIT's d'Arbeloff Laboratory are developing shoulder- and hip-mounted robotic arms to help workers in aircraft manufacturing perform difficult or complex assembly tasks that would normally require two people.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.