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Graphene Display capable of 400 Hz+

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Graphene Display capable of 400 Hz+

Postby ericl » 16 Nov 2018, 13:31

This might be interesting tech used in future screens:
https://phys.org/news/2018-11-graphene- ... 00ppi.html

They are saying it could work up to 2000hz! ;)
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Re: Graphene flickers at 400hz

Postby RealNC » 16 Nov 2018, 15:00

2000Hz 2500ppi.

Oh yeah :mrgreen:
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Graphene Display capable of 400 Hz+

Postby ericl » 16 Nov 2018, 16:44

Considering 4k @ 27" is about 163ppi...
And 8k @ 27" is about 335.43ppi..

That would be a hell of a monitor.

Sure, I'll take an 8k @ 27" monitor with 2000hz. Not like we have any graphical hardware that can drive it right now but perhaps in another decade or so.
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Re: Graphene Display capable of 400 Hz+

Postby Kheri » 18 Nov 2018, 00:19

"Membranes in a graphene MEMS can be moved by applying an electric potential and, together with the large optical absorption of graphene (2.3 percent of visible light)"

2.3% of visible light is a "large optical absorption"? How? Or did they mean 2.3% of the EM spectrum (visible light range on a logarithmic scale).
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Re: Graphene Display capable of 400 Hz+

Postby open » 19 Nov 2018, 15:46

They may mean that one layer of the material absorbs 2.3% so a few hundred nm of the stuff can be used as a gate to block light.
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Re: Graphene Display capable of 400 Hz+

Postby Chief Blur Buster » 20 Nov 2018, 13:50

There can be techniques to amplify that 2.3% into something that has a huge contrast ratio. Whether via using polarizers, via using stacking, etc. They will just have to develop the right technique.

Even - LCDs also happen to be nearly invisible without using a polarizer.
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Re: Graphene Display capable of 400 Hz+

Postby RealNC » 21 Nov 2018, 11:22

Kheri wrote:"Membranes in a graphene MEMS can be moved by applying an electric potential and, together with the large optical absorption of graphene (2.3 percent of visible light)"

2.3% of visible light is a "large optical absorption"? How? Or did they mean 2.3% of the EM spectrum (visible light range on a logarithmic scale).

As Chief said, LCD is nearly invisible too. Look at this LCD screen that had its polarizer removed, and then looked through a hand-held polarizer:

https://www.youtube.com/watch?v=xUw3u9lh9rQ
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Re: Graphene Display capable of 400 Hz+

Postby Kheri » 21 Nov 2018, 13:03

Thanks to all 3 of you. Actually looking at the Nature article helps a bit too.
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