Criam Engenhocas que toda a gente pode fabricar?
Eis um Inquérito para vocês:
Open Hardware Community Survey
In an effort to better understand who we are as a community, as well as why and how we use/make open-source hardware, a few of us* created a survey. Please participate so that we can promote open-source hardware and serve you to the best of our abilities!
The survey will be up until April 15, and the aggregate results will be made publicly available in the form of a report consisting of graphics, percentages, and anonymized quotes. By publishing your (anonymous) responses, we hope to provide the public with insights into the practices and experiences of the people involved in open-source hardware.
Take the survey!
*Catarina Mota, David Mellis and John De Cristofaro
Uma boa notícia, a Fibra de Carbono do amanhã poderá vir... Dos sacos de plástico!
Tomorrow's carbon fiber could be made from plastic bags
By Ben Coxworth
Thanks to research currently being conducted at the U.S. Department of Energy's Oak Ridge National Laboratory, our unwanted plastic bags may one day be recycled into carbon fiber. Not only that, but the properties of the fibers themselves could be fine-tuned, allowing different types of carbon fiber to be created for specific applications.
The Oak Ridge team, led by materials scientist Amit Naskar, start with polyethylene-base fibers – these could conceivably come from waste plastic sources, such as shopping bags and carpet backing scraps. Using a “a multi-component melt extrusion-based fiber spinning method,” the surface contours of these fibers can be customized, and their diameter can be manipulated with submicron precision. It is also possible to control their porosity.
Bundles of these fibers are dipped into a proprietary acid chemical bath. A process known as sulfonation causes the plastic molecules to bond with one another, transforming each bundle of fibers into one joined black fiber.
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