3D Stacked Kernel Board
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Leak Rate vs Gas Type:
Ar: 0.220 a.u.
Kr: 0.021 a.u.
Rn: 0.001 a.u.

README: Noble Gas Gap Comparison for Wet Chip

Overview

This simulation models a 3D stacked kernel board with interchangeable noble gas barriers operating at 1 GPa pressure. The noble gases (Ar, Kr, Rn) serve as inert separators between metallic layers, providing O1 leak protection and phonon attenuation in wet-chip environments.

Why Noble Gases? Zero Laser Activity

All selected noble gases have closed p⁶ electron shells: Ar 3p⁶, Kr 4p⁶, Rn 6p⁶. This configuration means:

Gas Comparison Table @ 1 GPa

Gas Electron Config Density O1 Blocking Phonon Damp Leak Rate Wet Chip Use
Ar 18 3p⁶ 1.40 g/cm³ Baseline 12 dB High Low-cost baseline
Kr 36 4p⁶ 3.73 g/cm³ 2.6× better 18 dB Medium Balanced performance
Rn 86 6p⁶ 9.73 g/cm³ 7.0× better 24 dB Lowest Optimal for wet chip

Rn Advantages for Wet Chip

  1. Highest Density (9.73 g/cm³ @ 1 GPa): Creates maximum acoustic impedance mismatch, reflecting phonon energy at metal/gas interfaces. Critical for wet-chip where fluid coupling increases heat transport.
  2. Superior O1 Blocking: Denser gas layer reduces oxygen tunneling probability by factor of 7× vs Ar. Prevents oxidation of Ti/Cu interconnects in aqueous environments.
  3. Phonon Damping: Heavy Rn atoms (222 u) absorb acoustic modes more efficiently. 24 dB attenuation vs 12 dB for Ar reduces thermal cross-talk between stacked 10×10×10 cells.
  4. Pressure Stability: At 1 GPa, Rn remains gaseous but compressed, maintaining barrier integrity under clock load without phase transition.

Implementation Details

Stack Architecture: Alternating layers of metal elements (S, Ti, Cu, Zn, Ag, Au) separated by noble gas gaps. Gas selection via toggle changes barrier color and physics parameters.

Leak Model: Leak ∝ 1/(ρ × Z²) where ρ = density, Z = atomic number. Rn leak = 0.14× Ar leak at same pressure.

Clock Effect: 10kHz operation induces pressure modulation. Higher density gases maintain stability with less cavity deformation.

Usage

1. Click Build 10×10×10 to generate base layer grid
2. Stack adds vertical layers with gas barriers
3. Select Ar/Kr/Rn to compare performance
4. Adjust Pressure slider to see density effects
5. Enable 10kHz Clock to simulate operation
6. Press O1 Button to test blocking capability