Ultra-Low-k Dielectric

Definition

An interconnect insulating material with very low relative permittivity, often achieved using porosity; the numerical cutoff for the ultra-low-k label varies across the literature.

Application

Reduces capacitance between interconnect wires, helping lower signal delay and power consumption.

Related concepts

• Low-k Dielectric
• Dielectric Constant
• Coupling Capacitance
• Interconnect

Evidence and further reading

• Evidence from pmc.ncbi.nlm.nih.govhttps://pmc.ncbi.nlm.nih.gov/articles/PMC5525179/
• Evidence from nature.comhttps://www.nature.com/articles/s41928-026-01685-2