Milled nanodiamonds containing nitrogen-vacancy (NV) centers provide an excellent platform for sensing applications as they are optically robust and have nanoscale quantum sensitivity. We developed a scalable strategy to form ordered arrays of nanodiamonds using capillary-driven, template-assisted self-assembly. By precisely placing 50 nm nanodiamonds across millimeter-scale areas we can study how variations in nanodiamond size, shape, and surface chemistry impact the particles’ optical and quantum characteristics. We have developed a tool for both fabricating new quantum devices and providing a deeper understanding of the material properties of nanodiamonds.
Shulevitz, Henry J., Tzu-Yung Huang, Jun Xu, Steven J. Neuhaus, Raj N. Patel, Yun Chang Choi, Lee C. Bassett, and Cherie R. Kagan. “Template-Assisted Self-Assembly of Fluorescent Nanodiamonds for Scalable Quantum Technologies.” ACS Nano 16, 2, 1847-56, (2022).