  Nanocrystalline diamond (NCD) is a promising material for electronic and
mechanical micro- and nanodevices. Here we introduce a versatile pick-up and
drop technique that makes it possible to investigate the electrical, optical
and mechanical properties of as-grown NCD films. Using this technique, NCD
nanosheets, as thin as 55 nm, can be picked-up from a growth substrate and
positioned on another substrate. As a proof of concept, electronic devices and
mechanical resonators are fabricated and their properties are characterized. In
addition, the versatility of the method is further explored by transferring NCD
nanosheets onto an optical fibre, which allows measuring its optical
absorption. Finally, we show that NCD nanosheets can also be transferred onto
2D crystals, such as MoS2, to fabricate heterostructures. Pick-up and drop
transfer enables the fabrication of a variety of NCD-based devices without
requiring lithography or wet processing.
