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LED Lights Of Tomorrow 100 Times Smaller?

by Susan DeFreitas, July 1st, 2011

Think today’s LED lights are efficient? The LEDs of tomorrow could be even more so, using a type of bulb 100 times smaller than those we see today, according to a new study published by researchers at the University of Miami College of Engineering.

The study, entitled ”Unusual Strategies for Using InGaN Grown on Silicon (111) for Solid State Lighting,” was published recently online in theProceedings of the National Academy of Science. It was co-authored by the university’s assistant professor Jizhou Song, who noted that this new LED model is based on a silicon substrate, novel etching strategies, a unique layout and an innovative thermal management method.

LED bulbimage via MyLEDLightingGuide

Song said, in a statement, “The combination of these manufacturing techniques allows the new design to be much smaller and keep lower temperatures than current LEDs using the same electrical power.”

Song and his fellow researchers see potential applications for this tiny form of solid-state lighting in deformable display monitors and biomedical devices that can adapt to the curvilinear surfaces of the human body.

DIY Solar Light Project Lights Your Walkway

by Caleb Denison, June 29th, 2011

Solar powered garden lights are a lot of fun. Used in gardens, on patios or along pathways, these relatively inexpensive little lights lend their charm to outdoor spaces while brightening things up at night. One problem with many solar powered garden lights, however, is that they are easy to steal. With no wire attached and only dirt holding them in place, these solar accent lights are an easy target for unsavory types who think that your lights will look better in their yard than yours.  Here’s a possible solution to that conundrum that just happens to be a nifty idea all on its own:a Solar Powered Walkway.

The designer of the DIY project, DepotDevoid, lays out clear instructions on how to use glass blocks, a solar panel and some LED bulbs to make a lighted walkway powered by the sun. As pictured, his pathway is a little sparse, but by doubling or tripling the number of components used, one could make a pretty elaborate pathway.

Solar Powered, Lighted Walkway
Just a couple of things to bear in mind if you decide to tackle this project. First, the designer indicates the walkway attracts neighborhood weirdos like moths to a flame. Who can blame them, though. Look at all those pretty lights in the ground!

Second, a few of the components that the designer originally used are no longer available, though the designer does point to several other options that can be used. Once the proper components are in hand, though, this project looks easy enough for anyone with a solder gun and a few spare hours to pull off.

Curious about other things you can do to green your home? Check out our Green Homes category for ideas.

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About pfiddle

Fiddle teacher - mostly Irish trad. Fiddle, mandolin and concertina. Eco-warrior, won E.U. Green Flower Award for Eco Accommodation. Also Irish (Gold) GHA. Green Hospitality Award. Mad keen on self-build - especially straw-bale and cob. 55 with a full head of (slightly) graying hair. No tattoos or piercings. Fond of animals - but legally so. Fond of food - I eat nothing else. Vegetarian by choice, Irish by the grace of birth, Munster by force of (rugby) arms.

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