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Old 11-11-2010, 03:16 PM
 
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Trees Infused With Glowing Nanoparticles Could Replace Streetlights | Popular Science


Quote:
Taiwanese researchers have come up with the elegant idea of replacing streetlights with trees, by implanting their leaves with gold nanoparticles. This causes the leaves to give off a red glow, lighting the road for passersby without the need for electric power.
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Old 11-11-2010, 10:47 PM
 
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Great sounding idea but how many roads have trees every hundred feet?

I know where this would work, dust all the plants along the border so illegal aliens don't have the cover of darkness to hide in.
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Old 11-12-2010, 12:54 AM
 
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How about bio-luminescent trees instead?
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Old 11-12-2010, 09:01 AM
 
Location: Cleveland, Ohio
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Quote:
Originally Posted by plwhit View Post
Great sounding idea but how many roads have trees every hundred feet?
Pretty much most of them where I live. Feel bad for you.

BUT the leaves fall of the trees every year here so it couldn't really REPLACE streetlights 365/days.
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Old 11-12-2010, 09:30 AM
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Location: Ohio
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Leafy trees in most parts of the world have an unfortunate tendency to lose their leaves right before the times of year when the nights are the longest. I don't see this as a year-round solution.

Also, large-trunked trees tend to do really bad things to vehicles when the vehicles run into them at roadway speeds. Planting trees as close to busy streets as streetlights are currently seems like a spectacularly bad idea from a safety standpoint. Probably not an issue for neighborhood streets, though.
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Old 12-20-2010, 06:52 PM
 
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Originally Posted by Bowie View Post
Leafy trees in most parts of the world have an unfortunate tendency to lose their leaves right before the times of year when the nights are the longest. I don't see this as a year-round solution.

Also, large-trunked trees tend to do really bad things to vehicles when the vehicles run into them at roadway speeds. Planting trees as close to busy streets as streetlights are currently seems like a spectacularly bad idea from a safety standpoint. Probably not an issue for neighborhood streets, though.
While leafy trees shed their foliage more drastically in the temperate regions of the world, it's not quite the same in tropical regions. Tropical plants do indeed shed their leaves, but they are often replaced with new ones all year long because the difference in day/night hours isn't as noticable as locations that are much farther north or south. For example, in Thailand, there is a difference in day and night hours during the year, but it's pretty slight in comparison to places farther north or south. Evergreen trees also lose their foliage as well, but it usually spread out rather than losing all over a few months. Generally, they maintain foliage throughout most of the year. Not sure it would work as well as broadleaves though.

Best way to avoid accidents involving vehicles is to keep the trees at a reasonable distance rather than directly at curbside.

I would guess that gold nanoparticles would have to be reinfused periodically to make up for any loss of foliage. Leaves that drop would need to be collected and processed. With the cost per ounce for gold these days, it could end up be a very costly process. Might be cheaper just to replace streetlights. On the other hand, instead of using gold, I wonder if there might be a way of synthesizing the same chemicals fireflies use?

Here's a link to an article with photos to help visualize how these glow-in-the-dark trees would look.
Gold Nanoparticles Could Transform Trees Into Street Lights | Inhabitat - Green Design Will Save the World

Slideshow for above article
Gold Nanoparticles Could Transform Trees Into Street Lights Infra red trees
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Old 12-20-2010, 10:03 PM
 
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Originally Posted by plwhit View Post
Great sounding idea but how many roads have trees every hundred feet?

I know where this would work, dust all the plants along the border so illegal aliens don't have the cover of darkness to hide in.
Well around here almost every road is lined with trees.

And every fall, all the leaves fall off.
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Old 12-21-2010, 01:46 AM
 
Location: in your dreams
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Uh yeeaaah, this doesn't sound at all like a potential threat to the environment...

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Old 12-21-2010, 01:48 AM
 
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OMG, that genious. WOW Im all for it. I havent heard about that. Where can I find the article for that?
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Old 12-21-2010, 01:51 AM
 
Location: in your dreams
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Uh, in this thread.
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