Abstract
An ultralow-threshold microfluidic single-mode laser is demonstrated by Emine Yegan Erdem, Hilmi Volkan Demir, and co-workers in article number 2007131, who use an on-chip cavity that has a colloidal quantum well solution as a microfluidic gain medium, which shows a record-low threshold among all solution-based lasers of 68 μJ cm−2. This work presents a significant step toward the realization of practical solution-based lasers from colloidal nanocrystals integrated into microfluidic devices designed for sensing and imaging applications.
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