A mobile robotic chemist
Autor: | Andrew I. Cooper, Nicola Rankin, Ben M. Alston, Phillip M. Maffettone, Buyi Li, Yang Bai, Brandon Harris, Catherine M. Aitchison, Benjamin Burger, Xiaobo Li, Vladimir V. Gusev, Xiaoyan Wang, Reiner Sebastian Sprick, Rob Clowes |
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Jazyk: | angličtina |
Rok vydání: | 2020 |
Předmět: |
Scientific instrument
Multidisciplinary Materials science business.industry Distributed computing Mobile robot Sample (statistics) 02 engineering and technology Modular design 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Bayesian search theory 0104 chemical sciences Task (project management) Search engine Robot QD 0210 nano-technology business |
Zdroj: | Nature |
ISSN: | 0028-0836 |
Popis: | Technologies such as batteries, biomaterials and heterogeneous catalysts have functions that are defined by mixtures of molecular and mesoscale components. As yet, this multi-length-scale complexity cannot be fully captured by atomistic simulations, and the design of such materials from first principles is still rare1–5. Likewise, experimental complexity scales exponentially with the number of variables, restricting most searches to narrow areas of materials space. Robots can assist in experimental searches6–14 but their widespread adoption in materials research is challenging because of the diversity of sample types, operations, instruments and measurements required. Here we use a mobile robot to search for improved photocatalysts for hydrogen production from water15. The robot operated autonomously over eight days, performing 688 experiments within a ten-variable experimental space, driven by a batched Bayesian search algorithm16–18. This autonomous search identified photocatalyst mixtures that were six times more active than the initial formulations, selecting beneficial components and deselecting negative ones. Our strategy uses a dexterous19,20 free-roaming robot21–24, automating the researcher rather than the instruments. This modular approach could be deployed in conventional laboratories for a range of research problems beyond photocatalysis. A mobile robot autonomously operates analytical instruments in a wet chemistry laboratory, performing a photocatalyst optimization task much faster than a human would be able to. |
Databáze: | OpenAIRE |
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