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AuthorThread
 03/28/2011 12:44:36 PM · #1
Watch the video and try to figure it out.

//www.engadget.com/2011/03/28/switl-scoops-oozy-goop-with-amazing-robotic-precision-video/
 03/28/2011 01:44:51 PM · #2
Clearly the work of the devil, or my physics teachers lied to me.
 03/28/2011 03:02:01 PM · #3
If there's a spill that could defeat the SWITL, my kids would spill it.
 03/28/2011 03:14:38 PM · #4
Unbelievable...
 03/28/2011 03:59:19 PM · #5
It's a rolling surface, pulls everything in and rolls back on to surface. Person have to keep the speed of rolling same with dragging to hold everything in same place.

By the way, if they are that smart, why can't they invent similar stuff to collect radiation from peoples skin?

Auch!
 03/28/2011 04:12:40 PM · #6
Originally posted by FocusPoint:
It's a rolling surface, pulls everything in and rolls back on to surface. Person have to keep the speed of rolling same with dragging to hold everything in same place.


Yes, but the question is how it defeats the surface cohesion tension on pick up and laydown. I assume it has some sort of electro static attraction and repulsion thing working, but the finesse with which it works is a bit freaky
 03/28/2011 04:24:24 PM · #7
Here's another video of the same kit. Amazing, especially when they spread out the ketchup.
 03/28/2011 04:31:03 PM · #8
It's a perfect tool to transfer evidence and frame someone :P
 03/28/2011 06:06:58 PM · #9
Originally posted by FocusPoint:
It's a perfect tool to transfer evidence and frame someone :P


LOL, it really is!
 03/28/2011 06:10:09 PM · #10
Originally posted by FocusPoint:
It's a perfect tool to transfer evidence and frame someone :P


Assuming of course that nothing from your person would end up at the scene or no one witnessed your presence.

Ray
 03/28/2011 06:10:11 PM · #11
It looks as if the surface that the goop is spread onto is some special material as well. I doubt that device would work as well on a carpet ;)
 03/28/2011 06:21:07 PM · #12
It looks to me like it relies on a film with a very narrow wedge behind it. When activated, the wedge pushes forward, rolling the film from underneath, around the front edge and onto the top surface. By definition, the speed of the film with relation to the substrate is twice the speed of the advancing wedge at its point of contact with the substrate, but is zero with respect to the substrate once it is on top of the wedge.
In order to work, the material needs to be soft enough to make intimate contact with the substrate (upon which the material to be picked up is sitting), and able to take on a very small radius at the tip of the wedge. If the radius is small enough and the wiping action of the film against the substrate is effective enough, you'll get what the video shows.
If I had to guess at the materials involved, I'd guess perhaps a very thin silicone layer bonded to a thin, non-elastomeric plastic film, perhaps polyimide (Kapton).
It's also possible that some very small scale mechanical structure exists on the surface of the film, perhaps minute, closely-packed fingers to enhance wiping. I wouldn't rule out some sort of nano-structuring of the surface.

ETA:
I agree with other posters that the substrate probably needs to be a very smooth surface.

All that said, it is really amazing to watch!

Message edited by author 2011-03-28 18:23:32.
 03/28/2011 06:29:00 PM · #13
Originally posted by kirbic:
It looks to me like it relies on a film with a very narrow wedge behind it. When activated, the wedge pushes forward, rolling the film from underneath, around the front edge and onto the top surface. By definition, the speed of the film with relation to the substrate is twice the speed of the advancing wedge at its point of contact with the substrate, but is zero with respect to the substrate once it is on top of the wedge.
In order to work, the material needs to be soft enough to make intimate contact with the substrate (upon which the material to be picked up is sitting), and able to take on a very small radius at the tip of the wedge. If the radius is small enough and the wiping action of the film against the substrate is effective enough, you'll get what the video shows.
If I had to guess at the materials involved, I'd guess perhaps a very thin silicone layer bonded to a thin, non-elastomeric plastic film, perhaps polyimide (Kapton).
It's also possible that some very small scale mechanical structure exists on the surface of the film, perhaps minute, closely-packed fingers to enhance wiping. I wouldn't rule out some sort of nano-structuring of the surface.


I love it when you talk dirty, Fritz :-)

R.
 03/28/2011 07:09:49 PM · #14
Show me when you found something does the same thing on carpets ;)
 03/28/2011 07:15:01 PM · #15
Originally posted by FocusPoint:
Show me when you found something does the same thing on carpets ;)


Sure thing... after I patent it, LOL. BTW, don't hold your breath!
 03/28/2011 07:24:54 PM · #16
I just use a paper towel.
 03/28/2011 07:56:36 PM · #17
Originally posted by FocusPoint:
Show me when you found something does the same thing on carpets ;)


I no longer have to worry about that.

After many years of frustration, I removed all of the carpet and linoleum from the house and replaced it with hardwood and ceramic tiles..........so much easier to clean.

Ray
 03/28/2011 08:05:55 PM · #18
Originally posted by FocusPoint:
Show me when you found something does the same thing on carpets ;)


A dog?
 03/28/2011 08:07:55 PM · #19
Originally posted by RayEthier:
Originally posted by FocusPoint:
Show me when you found something does the same thing on carpets ;)


I no longer have to worry about that.

After many years of frustration, I removed all of the carpet and linoleum from the house and replaced it with hardwood and ceramic tiles..........so much easier to clean.

Ray


That seems to be the norm these days. Most new houses have carpet, only upstairs. Leaving hardwood and tile/ceramic for the main floor. Still it's amazing how many people, won't use a vacuum. Then a good micro pad mop, like Bonna makes.
You want weird though, so go look at a Dyson fan. No blades and very effective. Super cool....

Thanks Snaffles for the shot!

03/28/2011 08:39:29 PM · #20
Originally posted by DrAchoo:
Originally posted by FocusPoint:
Show me when you found something does the same thing on carpets ;)


A dog?


They only take things off, but never put back (well, the way they were at least, not as pile of...)
 03/28/2011 08:49:42 PM · #21
Originally posted by Magnumphotography:
...You want weird though, so go look at a Dyson fan. No blades and very effective. Super cool....

Thanks Snaffles for the shot!


Lemme see...one household with two women. Nope, don't need a fan as I have a constant air motion going on what with all the yammering going on. :O)

Oh crap... I just now realized that Snaffles now knows my home phone number... This is a joke ya know.......ya that's it... a joke.

Ray

Message edited by author 2011-03-28 20:51:13.
 03/28/2011 09:38:24 PM · #22
Do you think next they will make a better autofocusing video camera?
 03/28/2011 10:25:08 PM · #23
my mouth hung open the WHOLE time. thats insane...!
 03/28/2011 11:08:02 PM · #24
Will it work on my sensor is what I would like to know?know?
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