Aging is a major risk factor for many diseases. Accurate methods for predicting age in specific cell types are essential to understand the heterogeneity of aging and to assess rejuvenation strategies. However, classif...
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The field of computational pathology has been transformed with recent advances in foundation models that encode histopathology region-of-interests (ROIs) into versatile and transferable feature representations via sel...
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While antiferromagnetic skyrmions display appealing properties, their lateral expansion in the high-velocity regime hinders their potential for applications. In this work, we study the impact of spin Hall torque, spin...
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While antiferromagnetic skyrmions display appealing properties, their lateral expansion in the high-velocity regime hinders their potential for applications. In this work, we study the impact of spin Hall torque, spin transfer torque, and topological torque on the velocity-current relation of antiferromagnetic skyrmions with the aim of reducing this deformation. Using a combination of micromagnetic simulations and analytical derivations, we demonstrate that the lateral expansion of the antiferromagnetic skyrmion is reminiscent of the well-known Lorentz contraction identified in one-dimensional antiferromagnetic domain walls. We also show that in the flow regime the lateral expansion is accompanied by a progressive saturation of the skyrmion velocity when driven by spin Hall and topological torques. This saturation occurs at much smaller velocities when driven by the topological torque, while the lateral expansion is reduced, preventing the skyrmion size from diverging at large current densities. We extend this study toward synthetic antiferromagnets, where the weaker antiferromagnetic exchange leads to much larger lateral expansion at smaller current densities in all cases. This study suggests that a compromise must be made between skyrmion velocity and lateral expansion during the device design. In this respect, exploiting the topological torque could lead to better control of the skyrmion velocity in antiferromagnetic racetracks.
Fractional partial differential equations (FDEs) are used to describe phenomena that involve a "non-local" or "long-range" interaction of some kind. Accurate and practical numerical approximation o...
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Uncertainty Quantification (UQ) is vital to safety-critical model-based analyses, but the widespread adoption of sophisticated UQ methods is limited by technical complexity. In this paper, we introduce UM-Bridge (the ...
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The features of ion-acoustic shock wave propagating in a degenerate ion beam driven anisotropic plasma in the presence of polarization of up spin and down spin electron is studied including the effect of anisotropic v...
The features of ion-acoustic shock wave propagating in a degenerate ion beam driven anisotropic plasma in the presence of polarization of up spin and down spin electron is studied including the effect of anisotropic viscosity. Using the reductive perturbation technique, a Zakharov-Kuznetsov(Z-K)-Burger equation is derived and the effect of different plasma parameters on the shock wave profile is studied from the steady state solution of Z-K-B equation. Under the suitable combination of physically admissible parameters, the existence conditions as well as nature of shock propagation in such plasma systems are examined. It is found that the influence of ion beams may produce four distinct modes of propagation apart from the inherent ion acoustic mode, namely, fast beam mode, slow beam mode, a coupled mode as well as an unstable mode. Like classical plasmas, the fast beam mode appears as compressive while the slow beam mode appears as rarefactive shock wave and within the real physical situation, the unstable mode fails to propagate as shock wave.
Big data transfer in next-generation scientific applications is now commonly carried out over dedicated channels in high-performance networks (HPNs), where transport protocols play a critical role in maximizing applic...
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The purpose of this work is to understand the fundamental connection between structural correlations and light localization in three-dimensional (3D) open scattering systems of finite size. We numerically investigate ...
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Phonons, or vibrational quanta, are behind some of the most fundamental physical phenomena in solids, including superconductivity, Raman processes, and broken-symmetry phases. It is therefore of fundamental importance...
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Quantum computers provide alternative avenues to access ground and excited state properties of systems difficult to simulate on classical hardware. New approaches using subspaces generated by real-time evolution have ...
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