Floating Points Live: Lasers and Phosphorescence

[DanBarlow]

Hi David,
They make good lumia also.

Here's my test from 2010. Photos

[dkumpula]

Thanks for sharing, Dan. I hadn't thought about lumia. I'll have to give that a try.

I started playing with my latest build on the zinc-sulfide walls for the first time last night. This was a quicky video although the projector has yet to be properly mounted and aimed.



-David

[CountFunkula]

DK-

You DEFINITELY took the red pill!

Looks Awesome!

[DanBarlow]

You win the award for most appropriate use of phosphor decay. :-)
When you hit it with IR, does it darken immediately or does it flash at first? I got some weird outline effects when I tried it. Sorry I don't have pictures.

[dkumpula]

Thanks, guys! The effect is working well enough to encourage me to paint the rest of the room. I think I may use strontium-aluminate in some locations and stick with zinc-sulfide in others.

Dan: Regarding the IR erasing, it really only works on the zinc-sulfide, which is a bummer as the strontium is the one that is bright and lasts forever, which would be nice to get a good erase. I did notice that on the strontium, a high dose of near IR has some 'de-glow' effect but its painfully slow. It is also incomplete and will leave it charged to a limited degree. I noticed this initially when I was painting some panel in near freezing temperatures. Picking them up resulted in a low glow thanks to the heat from my fingers.

IR with the zinc stuff, does cause an immediate fade from what I've seen, but what I think you are seeing is IR appears to light up (not phosphoresce) the zinc-sulfide a little bit, making it look like the flash you describe. I'll see if I can get some pics/video of the effect.

-David

[discothefunkyhippo]

David thanks for the info and I am loving the results you are getting!

I would totally be into a GTID painting tutorial at SELEM. I was going to suggest having a wall or tarp hung up somewhere so that people could play with the effect.

-Sal

[swamidog]

here's some old 405nm glow paint lumia i did in 2009

[mixedgas]

Plus One on Wildfire. I've seen some of their stuff in theatres and restaurants, its good if you pick the right colors and glow persistence. For laser stuff I think you want medium persistence phosphors..

Steve

[dkumpula]

David thanks for the info and I am loving the results you are getting!

I would totally be into a GTID painting tutorial at SELEM. I was going to suggest having a wall or tarp hung up somewhere so that people could play with the effect.

-Sal

Sure thing, Sal. I've got 4 plastic panels that fit together to cover a 4'x8' space that we can use for SELEM. One side has the strontium alum paint and I'll put the cheaper zinc-sulfide stuff on the other side so people can compare. At least we don't have to worry about those panels going up in flames.

-David

[Bradfo69]

Damn, after having been there and now knowing even better what I'm looking at in these videos, that's impressive!

I see a cartoon laser graphic of a snail moving from left to right with a green glowing slime trail at some point.