Juq-867 Eng Sub

– By adjusting the Cu‑to‑glass‑ceramic ratio, the CTE can be tuned between 0.8 × 10⁻⁶ K⁻¹ and 2.0 × 10⁻⁶ K⁻¹, opening avenues for heterogeneous integration with MEMS, photonic‑ICs, or even quantum‑dot devices where lattice matching is critical.