ACKNOWLEDGMENT
The authors acknowledge the National Institutes of Health - National
Institute on Deafness and Other Communication Disorders for support
(NIHDC016644 to R.Y.). Analytical methods involved use of the Cornell
Center for Materials Research (CCMR) Shared Facilities which are
supported through the NSF MRSEC program (DMR-1719875). We thank J.
Grazul for support TEM preparation.