Originally posted by humy
I had previously learned about how conventional colour cameras work and noted that they waste at least half the photons of light through colour filters before they can reach the light sensors and that halves the cameras sensitivity to dim light in dim light conditions. But here they ...[text shortened]... am I probably just mentally visualizing this “ single lithography step” incorrectly (somehow ) ?
I was wondering why the image shown of the child's toys was such low res, it was based on a 100X100 array.
They would not be vertically stacked, they would be side by side. If you note, the sizes they mentioned like 80 nm, presumably for blue which is around 320 nm, which makes these like a 1/4 wavelength antenna if we were talking 100 mhz or so. That means you can stack a lot of them together so you could have a section that was 80 nm, say 4 of them side by side, then a 100 nm section and so forth, because they are way less than a wavelength you can put a number of them together and it would all work out.
They do mention difficulties in real world manufacturing however so new process engineering will have to go hand in hand with this device for it to reach the real world marketplace. When they do, the resolution will more than double over today's camera's and still maintain low light level sensitivity.
One thing they noted, making them bigger or smaller can extend the sensitivity into the UV or IR range so you could see a camera that went from IR through visible through UV in one device with great sensitivity which implies to me the military would glom onto them and not allow them into the marketplace. Just speculation of course. That same technology could extend to astronomy and maybe get WAY deep into IR for gas analysis around stars and such.
It might even be able to resolve Terahertz radiation, millimeter wavelengths, where each post would now be 250 microns wide, still 1/4 wavelength wide.
Of course I am just expanding and speculating on the future of such techniques.
Since each post is 1/4 wavelength I wonder if this could lead to a holographic display if they can be made to emit light since now you would have an array of lines each less than a wavelength so if you could phase array them, you could have a projector capable of sending light out at programmable directions and any wavelength. It would be like a radar phased array but for light frequencies.