Yue Shi, Minoru Osada, Yasuo Ebina, Takayoshi Sasaki, Nagoya University01.08.21
Scientists at Japan's Nagoya University and the National Institute for Materials Science have found that a simple one-drop approach is cheaper and faster for tiling functional nanosheets together in a single layer. If the process, described in the journal ACS Nano, can be scaled up, it could advance the development of next-generation oxide electronics.
"Drop casting is one of the most versatile and cost-effective methods for depositing nanomaterials on a solid surface," said Nagoya University materials scientist Minoru Osada, the study's corresponding author. "But it has serious drawbacks, one being the so-called coffee-ring effect: a pattern left by particles once the liquid they are in evaporates. We found, to our great surprise, that controlled convection by a pipette and a hotplate causes uniform deposition rather than the ring-like pattern, suggesting a new possibility for drop-casting."
The process Osada desc
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