Electrode Configuration
Electrode Material
Electrode Diameter (μm) 50
Electrode Count per Shank 16
Electrode Pitch (μm) 100
SMP Substrate
Substrate Type
Substrate Thickness (μm) 25
Shank Width (μm) 100
Tissue Response Model
Implant Phase
Glial Scar Thickness (μm) 20
Brain Micromotion (μm p-p) 25
Recording Frequency (Hz) 1000
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|Z| at 1kHz (kΩ)
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CSC (mC/cm²)
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CIL (μC/cm²)
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Est. SNR (dB)
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Mod. Mismatch
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Est. Lifetime
Randles Circuit Model
Z_total = R_s + [R_ct ∥ (1/jωC_dl)] + Z_w(ω)
R_s = solution resistance · R_ct = charge transfer resistance
C_dl = double layer capacitance · Z_w = Warburg diffusion impedance
|Z(1kHz)| dominated by R_s + R_ct for large electrodes; C_dl for small electrodes
Impedance Spectrum (Bode Plot) — |Z| vs. Frequency
Impedance Trend Over Implant Duration
Phase Angle vs. Frequency
SMP vs. Conventional Substrate — Impedance Comparison
Substrate Note:
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