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Japan has also made some strides in this area, reported here a few months ago. "Professor Shintake aligned two axis-symmetric mirrors in a straight line and us
by chasil 1y ago
Japan has also made some strides in this area, reported here a few months ago.
"Professor Shintake aligned two axis-symmetric mirrors in a straight line and used a total of only four mirrors instead of ten.
"Because highly absorbent EUV light weakens by 40% with each reflection, only about 1% of the energy from the light source reaches the wafer when bounced off ten mirrors while more than 10% does when only four mirrors are used."
https://asiatimes.com/2024/08/japan-on-edge-of-euv-lithography-chip-making-revolution/ https://asiatimes.com/2024/08/japan-on-edge-of-euv-lithograp...
Edit: "Substrate said that it has developed a version of lithography that uses X-ray light."
- giva 1y ago"X-ray light" sound a bit like beer soda.
- terminalshort 1y ago"X-ray" is just a word for light that falls within an arbitrary band of wavelength.
- giantg2 1y agoI think you have it backwards - light is a term used for specific bands of the EM spectrum. Nobody is calling their FM radio waves light emissions. Unless this is a naming collison with the already established x-rays.
- CamperBob2 1y agoIt's an established term in physics. E.g., https://lightsources.org/ https://lightsources.org/
- mikkupikku 1y agoEverybody says "ultraviolet light" even though it's invisible.
- ThePowerOfFuet 1y agoNot all light is visible.
- mikkupikku 1y agoRight, hence "visible light". So I don't see the problem with saying x-ray light either.
- MyOutfitIsVague 1y agoYes, but so are radio waves and gamma rays; it would still sound odd to hear somebody say "radio light" or "gamma light".
- MangoCoffee 1y agoIBM also worked on X-ray lithography https://ieeexplore.ieee.org/document/5389640 https://ieeexplore.ieee.org/document/5389640