Personalized predictions of human brain temperature from a fully-conserved biophysical model

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  • Peter A. Kottke
  • Candace C. Fleischer
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  • X-ray free electron lasers provide high brightness sources that permit the study of low-cross section phenomena, such as Compton scattering from atoms and molecules. Here, the angular distribution of electrons after stimulated Compton scattering from molecular hydrogen are simulated, revealing the influence of dipole and non-dipole transitions.

    • Arturo Sopena
    • Alicia Palacios
    • Fernando Martín
    Article Open Access
  • Spin caloritronics exploits the effect of temperature on spin currents with a focus on features such as spin dependent thermal conductance, which are ideally suited for next generation spintronic devices. Here, the authors theoretically investigate a cold atom simulator of spin caloritronics comprising a one-dimensional spin chain between two temperature reservoirs and consider the dynamics of a spin impurity (spin flip) introduced into the chain.

    • Rafael E. Barfknecht
    • Angela Foerster
    • Artem G. Volosniev
    Article Open Access
  • When watching a movie of a physical process, one can conjecture whether it is running forward or backward in time by examining key physical parameters in the process. Here, the authors show that superpositions of (thermodynamic) quantum processes with opposite time’s arrows are also physically possible and observable, and explore the thermodynamic role played by the interference term.

    • Giulia Rubino
    • Gonzalo Manzano
    • Časlav Brukner
    Article Open Access
  • Relativistic quantum mechanics is typically used to describe phenomena of high-energy physics but can also be applied to describe some features of quantum materials. Here, the authors use electrical circuits to simulate Dirac-like phenomena and measure Zitterbewegung and Klein tunneling for a one dimensional Bose-Hubbard model.

    • Weixuan Zhang
    • Hao Yuan
    • Xiangdong Zhang
    Article Open Access
  • The study of high-order networks as attracted significant attention recently. The authors introduce the concept of computability for searching maximum clique in large networks and an optimized algorithm for finding cavities with different orders.

    • Dinghua Shi
    • Zhifeng Chen
    • Guanrong Chen
    Article Open Access
  • Subjecting materials to strong, carefully tuned light pulses are an increasingly popular route to realise novel physics and functionalities for solid-state systems, with one such example being Floquet engineering. Here, the authors propose to employ optical longitudinal conductivity to probe Floquet-Bloch bands, and demonstrate optical controllability of the conductivity of graphene.

    • Lukas Broers
    • Ludwig Mathey
    Article Open Access
  • Unidirectional spin Hall magnetoresistance (USMR) is a directionally dependent feature of a ferromagnetic/normal metal bilayer for which the underlying mechanisms are still under debate. Here, the authors investigate the crystallographic dependence of USMR in epitaxial Cr/Fe bilayers finding that electron-magnon scattering plays an important role.

    • Thanh Huong Thi Nguyen
    • Van Quang Nguyen
    • Sanghoon Kim
    Article Open Access
  • Problem decomposition methods may help to overcome the size limitations of quantum hardware and allow largescale electronic structure simulations. Here, a method to simulate a ten-atom Hydrogen ring by decomposing it into smaller fragments that are amenable to a currently available trapped ion quantum computer is demonstrated experimentally.

    • Yukio Kawashima
    • Erika Lloyd
    • Takeshi Yamazaki
    Article Open Access
  • The need for reduced dimensions of future devices pushes the limits of essential Si-based components and so alternative materials, such as carbon nanotubes or graphene, are being investigated as alternatives, but with new materials come new challenges. Here, the authors experimentally and theoretically investigate the on-currents for all-carbon transistors finding that contact spacing and length plays an important role in device performance.

    • Ali Deniz Özdemir
    • Pramit Barua
    • Artem Fediai
    Article Open Access

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