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k1≈0.32k_1 \approx 0.32

Why this formula appears here

The vendor and research-institute case for higher numerical aperture is built on the same arithmetic. imec assesses that for critical metal layers at its A14 and A10 nodes, 0.33 numerical aperture requires three to four masks where 0.55 accomplishes the layer in a single exposure, and that certain DRAM layers requiring at least three masks today would need one [ 12 ] . That is imec’s assessment, not a measured production result, and it should be read as such. ASML’s own product pages state 13 nm resolution for the 0.33 aperture platform and 8 nm for the 0.55 platform [ 7 ] — figures that correspond to k1k_1 ≈\approx 0.32 in both cases, which is a consistency worth noticing rather than a…

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k1k_1

Symbol k_1

k1k_1 is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.

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Published contexts (1)

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k1≈0.32k_1 \approx 0.32

Equation 13 · AI Hardware & Semiconductors

Patterning at the Limit: What Actually Happens When a Chip Is Manufactured

This equation gives an approximation: it relates the quantities while allowing an approximation.

The vendor and research-institute case for higher numerical aperture is built on the same arithmetic. imec assesses that for critical metal layers at its A14 and A10 nodes, 0.33 numerical aperture requires three to four masks where 0.55 accomplishes the layer in a single exposure, and that certain DRAM layers requiring at least three masks today would need one [ 12 ] . That is imec’s assessment, not a measured production result, and it should be read as such. ASML’s own product pages state 13 nm resolution for the 0.33 aperture platform and 8 nm for the 0.55 platform [ 7 ] — figures that correspond to k1k_1 ≈\approx 0.32 in both cases, which is a consistency worth noticing rather than a…

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