Parasitic effects of air-gap through-silicon vias in high-speed three-dimensional integrated circuits
Liu Xiaoxian, Zhu Zhangming†, , Yang Yintang, Ding Ruixue, Li Yuejin
       

The per-unit-length of RLGC parameters of GSG-type TSV: (a) Ru and Cu; (b) Gu and Lu.