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Volume 6 Issue 5, May 2021

Colloidal quantum dots (CQDs) are promising materials for realizing versatile, wavelength-tunable, solution-processed lasers. Other benefits offered by CQDs for lasing applications include low optical-gain thresholds and high temperature stability of the lasing characteristics. See Park et al.

Image: Victor I. Klimov. Cover design: Charlotte Gurr.


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  • Nature Reviews Materials speaks to Donald Ingber, Founding Director of the Wyss Institute for Biologically Inspired Engineering at Harvard University, about the animal testing conundrum and the importance of human-relevant models in biomedical research.

    • Christine Horejs
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  • Scientists worldwide struggle to identify suitable animal models to study SARS-CoV-2 infections. Interspecies-related differences, such as host specificity, divergent immune responses, or the unavailability of species-specific reagents hamper the research. Human-based models, such as micro-engineered multi-organs-on-chip, may hold the solution.

    • Partho Protim Adhikary
    • Qurrat Ul Ain
    • Sarah Hedtrich
  • The future of our species and planet hinges on our scientific creativity to tackle future challenges. However, the trust of the public in scientific processes needs to be earned and kept, which will require inclusive, self-reflecting, honest and inspiring science communication.

    • Sonia Contera
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Research Highlights

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  • Colloidal quantum dots are promising materials for realizing versatile, wavelength-tunable, solution-processed lasers. This Review surveys recent advances in colloidal quantum dot lasing, provides an in-depth analysis of outstanding challenges and discusses a path forward to implementing technologically viable lasing devices.

    • Young-Shin Park
    • Jeongkyun Roh
    • Victor I. Klimov
    Review Article
  • Organoids are cellular 3D models of organs, which provide powerful in vitro platforms for the investigation of tissue and disease biology. In this Review, the authors investigate engineering approaches, including cellular engineering, designer matrices and microfluidics, to improve the reproducibility and physiological relevance of organoids.

    • Moritz Hofer
    • Matthias P. Lutolf

    Nature Outlook:

    Review Article
  • The reversibility of transition-metal coordination bonds affords broad control over the structural dynamics of materials. This Review surveys the design principles underlying the utilization of this dynamic crosslink chemistry to engineer tunable mechanical properties in biological materials and protein and polymer hydrogels.

    • Eesha Khare
    • Niels Holten-Andersen
    • Markus J. Buehler
    Review Article
  • Active liquid crystals are a particular type of active materials in which an inherent structural anisotropy leads to long-range order and topological defects. This Review discusses natural and synthetic active liquid crystals, and explores their autonomous behaviour as well as potential applications.

    • Rui Zhang
    • Ali Mozaffari
    • Juan J. de Pablo
    Review Article
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Amendments & Corrections

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