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A comment on Ultrathin Metasurface Displays Take Aim at the LCD.

Re:Ultrathin Metasurface Displays Take Aim at the LCD by sam_goody on Monday March 13, 2023 @08:02PM (#35145184)
This is cool and all that, but I want to know if they got the invisibility cloak to work?

(Kind of hard to get good pics of an invisibility cloak, unless you can see Potter's hand sticking out.)

Also, could this tech (conceivably) make a better smart mirror - aside from a tinier more ingrained display for the electronics, could it modify the light before reflecting it back?

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Re:Ultrathin Metasurface Displays Take Aim at the LCD by intrasight on Tuesday March 14, 2023 @08:10AM (#35150197)
Even if it just switched the mirror between reflecting and not, I think it would be cool.

The real game-changer with visible light metamaterials is negative index of refaction, which will allow for completely flat optical lenses. Light-weight and low distortion. Hopefully coming to VR headsets in my lifetime.

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Re:Ultrathin Metasurface Displays Take Aim at the LCD by klondike_ on Tuesday March 14, 2023 @01:30PM (#35155134)
>Even if it just switched the mirror between reflecting and not, I think it would be cool.

This is basically how DLP projectors work

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Re:Ultrathin Metasurface Displays Take Aim at the LCD by frazar0 on Tuesday March 14, 2023 @09:20AM (#35151003)
Don't know much about the invisibility cloak. But in wireless communications the "better smart mirror" idea is being investigated to achieve arbitrary reflection directions that defy Snell's law [1][2]. The objective is to hang these "mirrors" on walls/buildings and reflect the incident power towards areas where the reception is poor.

[1] https://arxiv.org/abs/2110.09183

[2] https://ieeexplore.ieee.org/document/9718037

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