Wake Forest University scientists have devised a shatterproof, white light, flicker-free lighting device based on field-induced polymer electroluminescent (FIPEL) technology. (Source: Wake Forest University)
Ann, it seems that usage of plastic is increasing in various forms across different domains. Some of the good qualities of plastics like resistance to corrosion, low electric & thermal conductivity, durability etc can make them more adaptable and suitable for such missions.
Ann, the fact that Carroll has been developing the technology for ten years makes me wonder: What's been the big technological hurdle in all that time?
Thanks, mrdon, glad you liked the article. We give links in the blog to a detailed journal article that may have the info you're looking for. Regarding SSL, this technology doesn't sound like it qualifies.
Ann, What a great article. Given the tremendous luminance output and efficiency of FIPEL and its applications for commerical and residential lighting, what happens to the lonely LED? I'm curious to know the thermal capabilities, in terms of watts, and how it stacks against high bright LEDs. I've worked on LED projects for automotive and residential lighting applications and the biggest challenged I had was thermal management of the LEDs and the switching mode power supplies. Also, to put a solid state lighting (SSL) product out on the market requires a tremendous amount of testing (6000hrs) to be Energy Star and DOE compliant per the SSL LM80 testing document. Once the SSL product meets the LM80 requirements, its ready to be a saleable consumer item for purchasing.
Yes, I did wonder about that, Ann...if the material was so specialized that perhaps recycled plastic is not an option. Maybe down the line this could work but as you point out, we're definitely not there yet--which is a shame, because there is so much plastic in the world that goes to waste!
Thanks for the great information Ann - just goes to show how we take for granted things outside of our areas of expertise...that's what I love about this forum, it's a great way to learn from others. Makes perfect sense now that you've pointed it out...and a great idea about multiple waste streams fro recycled material. The logistical complexity would be huge but the payoff would be enormous.
It would be great if recycled plastic could be used in devices such as this, but I think it's unlikely that will happen anytime soon. The plastic used in this device is a highly customized and engineered material, which is why it can do what it does. And plastics are not monolithic: they differ greatly in their ability to be recycled into something usable, and the vast majority of available recycled plastic in the US is still of only 1 or 2 types, as we discuss here
http://www.designnews.com/author.asp?section_id=1392&doc_id=242808
and here
http://www.designnews.com/author.asp?section_id=1392&doc_id=240409
Perhaps in the future we'll have an existing, functional infrastructure with multiple known waste streams, so the specific recycled material a manufacturer needs is as easily obtainable as buying virgin plastic. But we're not there yet.
Maybe we're all used to Silicon Valley-style announcements of new technology for sale right now in high volumes, and not of the long R&D cycle behind that technology. In materials technology, especially energy-related, development can take a long time. Thanks, William, for finding those cost figures. The main researcher has had a single working device for a long time--but not a bulb, and, presumably, a very expensive device, and, I'd guess, one he's been tinkering with as a prototype.
By refining topologies and using new fluid technology, Moog's new peak sine drive controller increases available power without increasing controller volume.
Lantronix Inc. has expanded its line of controllers for sensor networks with the release of a rugged controller that improves management of automation systems used in a number of industries, including manufacturing, oil and gas, and chemicals.
Inspired by the hooks a parasitic worm uses to penetrate its host's intestines, the Karp Lab has invented a flexible adhesive patch covered with microneedles that adheres well to wet, soft tissues, but doesn't cause damage when removed.
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A quick look into the merger of two powerhouse 3D printing OEMs and the new leader in rapid prototyping solutions, Stratasys. The industrial revolution is now led by 3D printing and engineers are given the opportunity to fully maximize their design capabilities, reduce their time-to-market and functionally test prototypes cheaper, faster and easier. Bruce Bradshaw, Director of Marketing in North America, will explore the large product offering and variety of materials that will help CAD designers articulate their product design with actual, physical prototypes. This broadcast will dive deep into technical information including application specific stories from real world customers and their experiences with 3D printing. 3D Printing is
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