Three nano glass spheres cling to one another. They form a tower-like cluster, similar to when you pile three scoops of ice cream on top of one another – only much smaller. The diameter of the nano cluster is ten times smaller than that of a…
Category: 4. Physics
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Further improving quantum algorithms for nonlinear differential equations via higher-order methods and rescaling
We begin by summarising the notation and key variables used throughout the manuscript. Table 1 defines the principal symbols, their roles, and the conventions adopted. This summary is intended to assist the reader in navigating the derivations…
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Looking beyond lambda | Nature Astronomy
Riess, A. G. et al. Observational evidence from supernovae for an accelerating universe and a cosmological constant. Astron. J. 116, 1009–1038 (1998).
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Perlmutter, S. et al….
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Implicit neural representation for fast 4D computed tomography of multiphase flow in porous media
Withers, P. et al. X-ray computed tomography. Nat. Rev. Methods Prim. 1, 1–17 (2021).
Cnudde, V. & Boone, M. High-resolution X-ray computed tomography in geosciences: a review of the current…
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Distinct terahertz nonlinear and Raman responses in cuprate superconductors Bi2Sr2CaCu2O8+x
Tinkham, M. Introduction to superconductivity. Second Edition, Dover Books on Physics (Courier Corporation, 2004).
Kampfrath, T., Tanaka, K. & Nelson, K. A. Resonant and nonresonant control over matter and light by intense terahertz transients….
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North Pacific Ocean sound levels 2018–2022: COVID-19 pandemic impacts on anthropogenic noise
Analysis of the multiyear broadband spectra and the 63 and 125 Hz TOBs from three deep-ocean (~500-1500 m) sites in the northeast Pacific Ocean, and one from the Arctic Ocean, show several interesting long-term trends in sound sources and…
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A physics-informed Airy beam learning framework for blockage avoidance in sub-terahertz wireless networks
Airy beam generation and characterization
To model the best Airy beam for delivering data to an obstructed user, we first look into the field distribution of an Airy beam. Consider a sub-THz wireless transmitter (e.g., a base station) with an…
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Noncollinear harmonic spectroscopy reveals crossover of strong-field effects
Figure 1a illustrates the generation of ultrahigh order wave-mixing photons resulting from the superposition of an intense fundamental field with a cycle-averaged intensity of \({I}_{1}\approx 1\times…
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Long-lived optical coherence and spin lifetimes in Eu3+:Y2O3 oxide ceramics for quantum memories
Microstructure and perturbing center characterizations
The Eu3+:Y2O3 optical ceramics we studied were fabricated by vacuum sintering followed by hot-isostatic pressing (HIP) processes and post-annealing treatment, in which the Y2O3 nano-powders…
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