Skip to main content

Thank you for visiting You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.

Volume 20 Issue 4, April 2021

Chirality-driven wound repair

Microporous annealed-particle degradable scaffolds have been developed and shown to induce type 2 innate and adaptive immune response that facilitated skin wound healing.

See Griffin et al. and Stelzel and Doloff

Image: An Chieh Feng (Scumpia lab, UCLA) and Chen-Hsiang Kuan (Plikus lab, UC Irvine). Cover Design: Thomas Phillips


  • From the discovery of the Seebeck effect in the nineteenth century to its application in the latest space probes, thermoelectrics have carved out a niche for reliable applications.



Top of page ⤴


  • Strong light–matter coupling in quantum cavities provides a pathway to break fundamental materials symmetries, like time-reversal symmetry in chiral cavities. This Comment discusses the potential to realize non-equilibrium states of matter that have so far been only accessible in ultrafast and ultrastrong laser-driven materials.

    • Hannes Hübener
    • Umberto De Giovannini
    • Angel Rubio
  • Classical experiments from solid-state electrochemistry can be used to determine the charge of ions in solids. This Comment also clarifies how the charge of point defects fits with the standard picture of ionic charge, and highlights differences between these electrochemical experiments and methods that probe electrons directly.

    • Roger A. De Souza
    • David N. Mueller
Top of page ⤴

News & Views

  • Use of polymer and small-molecule semiconductors with relatively poor miscibility helps the long-term stability of the morphology and photovoltaic performance of bulk heterojunction films used in organic solar cells.

    • Andrew T. Kleinschmidt
    • Darren J. Lipomi
    News & Views
  • Very low-density pulsed current is shown to sharply change the dislocation evolution pattern of Ti–Al alloy with 7 at.% Al, enhancing its strength and ductility.

    • Stefan Zaefferer
    News & Views
  • A multifunctional device produces a much-improved thermoelectric-driven transverse voltage by exploiting a thermoelectric current to drive an anomalous Hall effect in a ferromagnet.

    • Andrew F. May
    • Brian C. Sales
    News & Views
  • A microporous annealed particle biomaterial has been developed to induce an immune response that can enhance wound healing and tissue repair.

    • Jessica L. Stelzel
    • Joshua C. Doloff
    News & Views
Top of page ⤴


  • Thermoelectric materials can generate electricity from waste heat but can also use electricity for cooling. This Perspective discusses coefficients of performance for these systems and the state-of-the-art for materials, and suggests strategies for the discovery of improved thermoelectric materials.

    • Jun Mao
    • Gang Chen
    • Zhifeng Ren
Top of page ⤴


  • Transverse thermeoelectrics can simplify devices as the electric field and heat gradient are perpendicular, but the power output is much less than in standard devices. Here, by forming a closed circuit of thermoelectric and magnetic materials, a much larger transverse thermopower is generated.

    • Weinan Zhou
    • Kaoru Yamamoto
    • Yuya Sakuraba
Top of page ⤴


Top of page ⤴

Why it Matters

Top of page ⤴

Amendments & Corrections

Top of page ⤴


Quick links