Active-Matrix Organic Light-Emitting Diode Display On Human Skin (phys.org) 36
In a new report on Science Advances, Minwoo Choi and a team of scientists in Electronic Engineering and Materials Science in the Republic of Korea, developed a wearable, full-colour OLED display using a two-dimensional (2-D) material-based backplane transistor. Phys.Org reports: They engineered an 18-by-18 thin-film transistor array on a thin molybdenum disulfide (MoS2) film and transferred it to an aluminium oxide (Al2O3)/polyethylene terephthalate (PET) surface. Choi et al. then deposited red, green and blue OLED pixels on the device surface and observed excellent mechanical and electrical properties of the 2-D material. The surface could drive circuits to control the OLED pixels to form an ultrathin, wearable device.
In this work, Choi et al. developed a large-area MoS2 TFT array to operate 324 pixels in a 2-inch RGB OLED, in which the full-color display demonstrated an active-matrix configuration. The RGB OLEDs were made of different optoelectronic characteristics, therefore the team designed the backplane TFTs to control each color pixel. The experimental setup was promising as a wearable display and functioned steadily on human skin without adverse effects. The team used heterogenous material designs to form optoelectronics in the present work. [...] The low stiffness of the ultrathin device prevented the deterioration of optical and electrical properties during substantial mechanical deformation reflexes -- after its transfer to a human hand. Based on the current-voltage characteristics (I-V), the current level did not change during skin shrinkage or skin stretching exercises and the on-state also did not fluctuate during active-matrix display operation. While the device stability is still in development, the team aim to conduct further engineering to improve the MoS2 film for practical applications as a wearable, full-color AMOLED display.
In this work, Choi et al. developed a large-area MoS2 TFT array to operate 324 pixels in a 2-inch RGB OLED, in which the full-color display demonstrated an active-matrix configuration. The RGB OLEDs were made of different optoelectronic characteristics, therefore the team designed the backplane TFTs to control each color pixel. The experimental setup was promising as a wearable display and functioned steadily on human skin without adverse effects. The team used heterogenous material designs to form optoelectronics in the present work. [...] The low stiffness of the ultrathin device prevented the deterioration of optical and electrical properties during substantial mechanical deformation reflexes -- after its transfer to a human hand. Based on the current-voltage characteristics (I-V), the current level did not change during skin shrinkage or skin stretching exercises and the on-state also did not fluctuate during active-matrix display operation. While the device stability is still in development, the team aim to conduct further engineering to improve the MoS2 film for practical applications as a wearable, full-color AMOLED display.
Should go over well (Score:5, Funny)
I hope they market this to the correct demographic. It is wrong to think that this will find a home in the medical or similar industries.
Where it will really shine (pun intended) is in displaying animated text profanities on juvenile and young college students as they gyrate at rave parties. I expect the top sellers will be "SLUT" and similar epithets.
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Re:Should go over well (Score:4, Funny)
No, you want to have one of these on your balls that's green when all's clear and red when you've got the clap.
And blue when you've been rejected?
Iights up when it gives you cancer (Score:3)
They don't say, but last time I looked LEDs were not made with human safe elements. Sure this may have a thin polymer over it. Keep telling yourself that.
Re:Should go over well (Score:5, Interesting)
If they can develop an IR version it could be quite good for blinding CCTV.
By the way, a mask with random eyes printed on it really screws up facial recognition.
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What about eyes printed on a t-shirt? [artfire.com] (not sure if SFW, will heavily depend on your co-workers and your boss)
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I think they need to be near your actual eyes to fuck up the facial recognition. Otherwise it just sees two faces, one of them yours.
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When your face is covered then printed eyes and faces on a t-shirt should be enough. But any mask will do, because whatever makes it difficult for a human to identify you will ultimately also make it difficult for technology.
Latest when a prosecutor wants to convince judge and jury with hard evidence, but none of the people can tell who is who in a picture, will it be very hard for the prosecution to sell a computer's facial recognition analysis as the truth.
At that point will it either be a long criminal r
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"Latest when a prosecutor wants to convince judge and jury with hard evidence, but none of the people can tell who is who in a picture,"
Do you think a jury really understands DNA evidence?
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Yes. People understand a DNA sequence needs to match so well that it excludes close relatives and basically has to be a perfect match. Facial recognition however is far less precise and people will want to see the pictures for themselves. And when a person then isn't capable of identifying somebody will they also not trust the technology. Show some two exact DNA sequences and they'll be able to tell if these are a match or not.
This is why DNA proof has been widely accepted and why facial recognition softwar
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This is nonsense. Any handheld flashlight with IR leds would be much more powerful and do a much better job. A laser pointer can then be used to ruin a camera's sensor for good. But why even go high tech, when a black hoodie and a spray can are cheap and work perfectly fine? You're not going to run around completely naked covered in OLEDs tattoos either, but you will be wearing some clothes, which at best gets you a good spot on the "top 10 funniest thieves caught on camera".
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I don't want to destroy it, just make my face impossible to see.
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Having worked with IR CCTV can I tell you that one can identify suspects not only by their faces, but also by their clothing, body shape (height and weight), posture and by how they walk.
Facial recognition only focuses on faces and tries to create something similar to a finger print, but it is possible to use much more than just the face, and people are often identified by other characteristics already.
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OLED tramp stamps. What a time to be alive.
Finally (Score:2)
Easily removable, programmable tattoos.
Oh and probably way cheaper than an iWatch. I don't know if they can toss in a vibrating layer or sound for notifications, but who knows.
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I wouldn't say it will be cheaper than the iWatch. Because now instead of making materials really small and work in a small form factor you now will need to make it transparent as well.
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Why? I don't think I'd feel the need to see the patch of skin underneath the frolicking puppy display. My skin isn't all that interesting (except under a microscope, of course).
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Easily removable, programmable tattoos.
And an opportunity for people to make side-hustle money by carrying advertising around. You might be paid on the basis of the number of people who saw you in a day, but how would the metrics work? I can envision an app that broadcasts via Bluetooth, which is approximately equivalent to visual range, that you carry advertising. Stick-on detectors hidden in high traffic public places would tally the signals it encountered, and log them as being from individual accounts.
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There's no such thing as an iWatch.
A step closer to Hollywood (Score:2)
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+1 informative, I was waiting for someone to mention that.
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What does it mean when your life clock is clear? Asking for a friend.
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Sorry I'm late to reply, but I'm guessing your "friend" will never see this message so I won't bother writing more details.
It rubs the lotion on its skin (Score:2)
Or else it gets the hose again.
What movie or TV show was this in? (Score:2)
How do you get power to it? (Score:2)
Electrodes and a battery pack? The article didn't say.
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And where's the charging port?
Oh wait... I really don't want to know, do I?
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And where's the charging port?
Oh wait... I really don't want to know, do I?
"And this is the suppositrode..."
Organic (Score:2)
A display on human skin. That gives a whole different level of meaning to "Organic" LED!
I would be interested (Score:2)
in the time it takes for hack a day to copy paste this summary
It needs integrated touch sensors (Score:2)
or else it's dead technology before it even comes to market. People will use traditional touchscreen displays over skin displays if these don't allow for input.
Flicker cladding! (Score:2)
Props to Rudy Rucker.
William Gibson (Score:2)
William Gibson's novel The Peripheral has a character with animated tattoos: virtual life animals that run around etc. Looks like the present is catching up with the future portrayed in that story. A cute animated dog that exhibited various cute behaviors on your arm would be one possible application.