Changxi Zheng, Jerry Tersoff, et al.
Physical Review B
Structural arrays with nanoscale spacing arise in many device concepts. Carbon nanotube transistors are an extreme example, where a practical technology will require arrays of parallel nanotubes with spacing of order 10 nm or less. We show that with decreasing pitch there is a first-order transition, from a robust structure in which the metal wets the substrate between tubes, to a poorly wetting structure in which the metal rides atop the nanotube array without touching the substrate. The latter is analogous to the superhydrophobic "lotus leaf effect." There is a sharp minimum in the delamination energy of metal contacts at the transition pitch. We discuss implications for contact resistance and possible mitigation strategies.
Changxi Zheng, Jerry Tersoff, et al.
Physical Review B
Jonah Shaver, Junichiro Kono, et al.
Nano Letters
Bhupesh Chandra, Vasili Perebeinos, et al.
Physical Review Letters
Yuhei Miyauchi, Zhengyi Zhang, et al.
Physical Review B - CMMP