A nanosized droplet, especially one that is part of a nanoarray(noun)
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Use "nanodroplet" in a sentence
"Chemists at the University of Illinois at Chicago say it's possible, reporting that graphene can become quite pliable using only a nanodroplet of water to do the job."
"NanoPacific Holdings Inc. has licensed this nanodroplet technology from UCLA to develop and commercialize the technology in a variety of applications."