Results 121 to 130 of about 38,165 (305)
On the Coulomb and Hulthen Potentials [PDF]
Australian Journal of Physics, 1954 This paper contains the results of two investigations. (i) The Hulthen potential is considered as a modification of the Coulomb potential. The transition from the former to the latter is investigated. (ii) The zeros of the Fredholm determinant for the Hulthen potential are calculated from the first two terms of its power-series expansion.
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Physics Education, 2023 Abstract The Coulomb barrier is a classic introductory physics concept and one that is key to understanding nuclear fusion. Yet the idea that fusing nuclei within a single system could exhibit both far-range repulsion and short-range attraction can result in significant cognitive dissonance in students. There are no classical examples
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Fully Printed Electrocaloric Heat Pump
Advanced Materials Technologies, EarlyView.A system based on a flexible printed PEDOT:PSS/P(VDF‐TrFE‐CFE) electrocaloric membrane. The membrane periodically alternates between the cold and hot sides following its electrocaloric cycle and successfully generates a temperature difference. The entire fabrication process is industrially scalable, cost‐effective, and based on widely accessible ...
Adrian Agreda +7 more
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Coulomb branch and integrability
Journal of High Energy PhysicsA bstract We study one-point functions of non-BPS single-trace operators on the Coulomb branch of planar $$\mathcal{N}=4$$ supersymmetric Yang-Mills theory.
Frank Coronado +2 more
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Advanced Robotics Research, EarlyView.A codesign multiobjective optimization framework was developed to enhance the morphology and controller of a snake‐like robot driven by artificial muscles. It improved planar locomotion, agility, and power efficiency. The approach optimized link geometry and controller gains, revealing that shorter muscles near joints and longer linkages maximize ...
Ayla Valles, Mahdi Haghshenas‐Jaryani
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Miniaturized Magnetic Tip Design for Endoluminal Vine Robot Navigation
Advanced Robotics Research, EarlyView.A magnetic tip mount is designed for a miniaturized 7 mm soft‐growing vine robot to enable wireless magnetic steering and onboard imaging, while preserving a 3 mm working channel. The internal–external ring magnets design balances magnetic attachment with low eversion pressure. Experiments demonstrate ±90° steering, 34 mm bending radius, and successful
Andrea Yanez Trujillo +4 more
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Nature CommunicationsPressure is a powerful tool for tuning the magnetic properties of van der Waals magnets owing to their weak interlayer bonding. However, local magnetometry measurements under high pressure still remain elusive for this important class of emerging ...
Z. Mu +17 more
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Nature of excitations and defects in structural glasses
Nature Communications, 2019 The nature of the defects in amorphous materials, analogous to vacancies and dislocations in crystals, remains a matter of debate. Scalliet et al. show that localized and extended defects coexist in a wide range of conditions, yet are associated with ...
Camille Scalliet +2 more
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A Bifunctional T3SS‐Effector Simultaneously Cleaves Host MAP Kinase and Inhibits PPM1A Phosphatase
Advanced Science, EarlyView.Pathogenic bacteria exploit the metalloprotease effector NleD to subvert host defenses. Structural, biochemical, and infection analyses reveal a bifunctional mechanism by which NleD binds and inhibits the host phosphatase PPM1A while preserving its proteolytic activity against MAPKs.
Yaakov Socol +18 more
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On Determination Method for Resolution of Secondary Electron Images in Scanning Electron Microscopy
Advanced Science, EarlyView.An idealized SEM, termed Rayleigh's microscope, is constructed by Monte Carlo simulation to represent imaging conditions that just satisfy the Rayleigh criterion. Based on this physically defined model, sharpness–resolution conversion curves are established and combined with the Rose criterion, enabling automated resolution evaluation from practical ...
Tongfang Yang, Yanbo Zou, Zejun Ding
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