Tomographic image of melt pool

Operando tomographic microscopy during laser-based powder bed fusion of alumina

  • Malgorzata G. Makowska
  • Fabrizio Verga
  • Steven Van Petegem


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  • Akiyoshi Yamada headshot

    Akiyoshi Yamada is a postdoctoral researcher at The University of Electro-Communications and a research fellow at the University of Tokyo. His research focuses on transport phenomena and electron states in metals and semimetals at high magnetic fields.

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  • A superlattice structure in Eu-doped GaN is known to improve the power output of red LEDs, though the mechanism behind this needs to be further established. Here, terahertz emission spectroscopy is used to understand the role played by potential barriers and carrier confinement in determining power output.

    • Fumikazu Murakami
    • Atsushi Takeo
    • Masayoshi Tonouchi
    ArticleOpen Access
  • The layered charge density wave system 1T-TaS2 hosts a series of interesting correlation-induced electronic phases, but the nature of its insulating state is still under debate. Here, theoretical calculations and microscopy measurements reveal the role of stacking and interlayer coupling in the formation of different bandgap types, addressing previous discrepancies.

    • Jae Whan Park
    • Jinwon Lee
    • Han Woong Yeom
    ArticleOpen Access
  • Engineering the dynamics of excitons is a promising approach for advanced optoelectronic devices. Here, exciton formation dynamics at an Si/SiO2 interface are studied for different temperatures and injection levels by time-resolved terahertz spectroscopy.

    • Sergio Revuelta
    • Enrique Cánovas
    ArticleOpen Access
  • As recently proposed, the kagome metal CsV3Sb5 could host spontaneous orbital-currents due to Chern Fermi pockets, but these are challenging to detect. Here, a large g-factor enhancement in magnetic breakdown orbits, determined via quantum oscillations, provides a visible manifestation of Berry-curvature-induced large orbital moments.

    • Kuan-Wen Chen
    • Guoxin Zheng
    • Lu Li
    ArticleOpen Access
  • Hafnia ferroelectrics hold exciting technological potential, but the variety of phases and unconventional properties found in these materials make them extremely challenging to describe theoretically. Here, an approach based on an original reference phase provides a unifying picture to understand the multiple low-energy polymorphs of hafnia.

    • Hugo Aramberri
    • Jorge Íñiguez
    ArticleOpen Access