Scientists built a 'brain-on-a-chip' that processes info with light through tiny crystal wires instead of using electricity.
March 26, 2026
Original Paper
Colloidal Nanocrystals Regrowth-Assisted Synthesis of Perovskite Microwire Lasers for Integrated Optoelectronics
arXiv · 2603.24285
The Takeaway
By growing tiny perovskite wires that act as both lasers and sensors, researchers created a device that mimics how human neurons communicate. This light-based system could lead to AI hardware that is exponentially faster and more energy-efficient than the silicon chips we use today.
From the abstract
Colloidal perovskite nanocrystals (NCs) are a well-proven platform for growing anisotropic structures. Nanowires (NWs) exhibiting a quantum confinement phenomenon and microwires (MWs), which enable lasing, are of particular interest for optoelectronic devices. Synthesis of the latter is challenging. Herein, we report a straightforward access to high-quality CsPbBr3 MW lasers. We utilize a diphenyl ether (DPE) solvent for the hot-injection synthesis. DPE coordinates strongly to Pb2+ and allows to