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Color Printing Reaches Its Ultimate Resolution
ananyo writes "The highest possible resolution images — about 100,000 dots per inch — have been achieved, and in full-colour, with a printing method that uses tiny pillars a few tens of nanometres tall. The method could be used to print tiny watermarks or secret messages for security purposes, and to make high-density data-storage discs. Each pixel in these ultra-resolution images is made up of four nanoscale posts capped with silver and gold nanodisks. By varying the diameters of the structures (which are tens of nanometres) and the spaces between them, it's possible to control what colour of light they reflect. As a proof of principle, researchers printed a 50×50-micrometre version of the 'Lena' test image, a richly coloured portrait of a woman that is commonly used as a printing standard (abstract). Even under the best microscope, optical images have an ultimate resolution limit, and this method hits it."
...cost 10 times the printer itself.
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My reputa
"Everything that can be invented has been invented."
Charles H. Duell, Commissioner, U.S. patent office, 1899.
You can read higher resolutions with atomic scopes etc, and you can create images other than with lenses, so I don't think we've hit the limit yet, unless there's something in TFA about sticking dots on quarks or something...
Feminine beauty is not well served by zoomable acres of gaping pores. Therein lies horror, and quite possibly a counter-Darwinian response insalubrious to human survival.
Those things would not be Color printing. In fact, you could view this process as monochrome too, except when the comparitively long wavelength visible light hits it, it acts in a similar way to a pigmint (well, diffraction isn't exactly the same, but similar enough).
> 'Lena' test image
Pr0n, driving tech development since cavemen fingerpainted a wall.
(-1: Post disagrees with my already-settled worldview) is not a valid mod option.
It should be possible to print colour holograms if they get the resolution high enough.
Reality? In my Slashdot? But but but technology and private space elevators! NO LIMITS!
I wonder if 100 years from now we'll still be using an image from playboy as a test image, or if they will have found something better by then.
I have been looking for a replacement printer and must say that home users have been cornered by the printer makers. Unlike the nineties, you can't find small inkjets anymore. USB killed the single-purpose printing device by allowing (eventually forcing) scanning and modem feature creep from office environments to our ever shrinking desks.
A search for compact printers shows some bizarrely shaped gadgets designed to print 4x6 without any letter feed sizes. More searching reveals so business road warrior units that more or less fit the bill, but cost hundreds of dollars to justify the portability.
Lastly, Linux support is not advertised, so other that restricting searches to HP and sucking it up with a desk-hoarding multipurpose anyway, you would need to spend hours googling each canon, brother or lexmark result. Got burned badly by buying blindly last time, but my search is starting to be futile. Sadly, home resolutions has NOT been an issue in a decade, and someone should turn the spotlight back on our lousy color print speeds... they are stuck at 10 or so PPM nominal, and trying an actual full res, full page picture takes it down to about a minute each. Commercial Photo print labs aint dying just yet, since I wont waste my ink and time when my homebrew printout count goes past 10 copies
This just hits the resolution limit for color printing that includes red. It is possible to make color images with just greens, blues and violets at a higher resolution, it just wouldn't count as full color. Researchers could go to even higher resolutions, if they just use blues and violets, but they wouldn't be able to render a very convincing human flesh tone. Competition will start shortly, for the smallest smurf vision display.
Pigmint, huh. Isn't that the pork rind they leave on your pillow at night at a Motel 6 in the south? :)
Even under the best microscope, optical images have an ultimate resolution limit, and this method hits it.
And the linked Wikipedia article quoth:
With green light around 500nm the Abbe limit is 250nm.
That's a bit more than 100,000 dpi. Visible light goes down to 380 nm (~133,000 dpi), so you'll never see anything smaller by optical means.
This post contains no rudeness or derision of any kind. All arguments are friendly. Terms and exclusions may apply.
After all, the so-called retina display is at the limits of what the eye can see.
Which is complete bullshit. Apple's so-called retina display is around 300 dpi.
Waaaay back in the early 1980s when HP came out with the world's first laser printer, everyone was blown away by printing at 300 dpi.
It didn't take long for laser printers to progress further, to 600 dpi and then 1200 dpi, because 300 dpi ISN'T GOOD ENOUGH. Printing at 300 dpi is still jagged.
And professionally printed magazines (such as Newsweek) are printed at close to 2400 dpi.
Don't get me wrong, Apple's displays are nice to look at (aside from the glossy thing), but Apple has a long way to go if they want to make an actual retina display.
Color printing reaches the diffraction limit- not the ultimate resolution. People have been pushing the bar with respect to what can be detected with light microscopy, and in fact it is possible to use various new techniques to break the diffraction limit.
http://en.wikipedia.org/wiki/Super_resolution_microscopy
-AW
I always get into discussions with my customers (30+ year photocopier/printer/computer tech) about their machines, and printing resolution. 99% of the time, I tell them just to print word docs in draft mode, and save the toner for something else, and print in a lower resolution. Most of the time the stuff they print ends up in the shredder in the first place. For some odd reason, they think they need to print 600x600 in photo quality all the time. Yeah, good for my business since they use more toner, but kind of stupid and wasteful. With the crap paper most people try to shove through a modern copier these days, they are lucky it prints in the first place. Why someone wants to run the cheapest paper, then ends up throwing enough of it away in paper jams, to justify running the better paper is another one that makes you scratch your head. Paper got "cheap" in the mid 80's and hasn't been the same since. They run dual purpose paper, that is meant to run in ink jets & photocopiers, then leave the stuff sitting in a non climate controlled area (warehouse) and complain when it comes out curled because it has sucked up enough moisture to fill a cup of water. End users....well, if it wasn't for them I guess I wouldn't have anything to do, but come on people, use a LITTLE common sense will ya?
I LOL'd.
Sara
Designer, Gamer, Macgrrl in an XP World
...as in an inkjet printer that doesn't clog up from dried up ink, so it it has a lifetime of over a year.
Until then, I'll stick with lasers. Even if it's just b/w.
How is the archival quality? Does it break down? Will this someday replace the Giclée print as the method for find art printing?
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With near field optics, you could see things much smaller than the wavelength. Even with practical limitations, current technology can sometimes see with resolution and order of magnitude or two below the wavelength. The only catch is it requires optical elements or structure to be placed at distances on the order of a wavelength or less from what is being observed. So it is limited to some very specific uses.
With that resolution it would be so realistic that my enemy, the Coyote, will think the picture of a train tunnel I print with it is real and smash into it at full speed.
What about paper grain?
...ought to be enough for anybody
Even though there is a picture that shows low fidelity, we don't really know if the image was scanned poorly, saved poorly, converted by a reporter poorly, or converted yet again for upload to the web server poorly. I'm willing to give the system the benefit of a doubt, though it's also possible that they haven't come up with enough patterns of gold and silver posts to smoothly represent millions of colors.
Thank you, AC, for the well written explanation of how holograms work. I've never quite understood until now!
To be honest, the main reason I said that, was because I wanted to see if I could post a link to the original article and still be modded up. Apparently you can.
"First they came for the slanderers and i said nothing."
I'm pretty sure this is already small enough to make an HDTV at a similar body-to-screen-size ratio for ants.
Yes, smaller details resolved - not color. That would still not break the barrier on the smallest color printing possible.
You are incorrect. 100,000 dpi is approximately 4000 dots per millimeter. Divide 1mm by 4000 and you get exactly 250nm. Oh yeah, they also do mention this number in the article which you should read - it's more informative than the summary and the following ignorant comments by people who also haven't read it.
Optical images. Scanning electron microscopes (what I assume you meant by "atomic scopes") are not optical.
The reason you got modded up was you used the word 'wavelength' and lots of new slashdotters got erections
The new right fascists are bilingual. They speak English and Bullshit.
Does this mean that ultimately there is going to be a resolution on 3D printers in the future also?
Near field techniques are used for spectroscopy too. So color information still can be detected from objects much smaller than a wavelength in specialized setups.