Do you have a question? Tell us what you want to know Get in touch here Henry Cowling BBC Sport journalist David Raya has the most Premier League clean sheets by a goalkeeper in 2025, unsurprisingly ...

Crystal engineering is the design of molecular solids with specific physical and chemical properties through an understanding and manipulation of intermolecular interactions. Engineering strategies ...

Liquid crystals are substances that flow like a liquid but maintain some of the ordered structure of crystals. Liquid-crystal molecules tend to be elongated and to orient in specific directions.

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