Results 111 to 120 of about 4,740,864 (321)
Families index for manifolds with boundary, superconnections and cones. II. The Chern character
Journal of Functional Analysis, 1990 [For Part I, cf. ibid. 89, 313-363 (1990; Zbl 0696.53021).] In the present paper the authors first prove the existence and uniqueness of the superconnection heat kernels on families of manifolds with a continuous family of conical singularities. Then they show that the Chern character of the family of Dirac operators can be represented by a heat ...
Bismut, Jean-Michel, Cheeger, Jeff
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Cone Index of Loamy Sand and Loam Soils as Affected by Compaction.
, 1988 A study was conducted to determine the effect of compaction on cone index of loamy sand and loam soils. Three degrees of compaction were applied to soil samples at each of seven soil water contents. The compaction degrees were reached by applying 4, 8,
Al-Darby, A. M, A. S. Babeir
core
Ferroelectric Quantum Dots for Retinomorphic In‐Sensor Computing
Advanced Materials, EarlyView.This work has provided a protocol for fabricating retinomorphic phototransistors by integrating ferroelectric ligands with quantum dots. The resulting device combines ferroelectricity, optical responsiveness, and low‐power operation to enable adaptive signal amplification and high recognition accuracy under low‐light conditions, while supporting ...
Tingyu Long +26 more
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Growth and quality of Brazilian pine tree seedlings as affected by container type and volume
Ornamental Horticulture, 2019 Araucaria angustifolia (Bert.) O. Kuntze (Araucariaceae), commonly known as araucaria and Brazilian pine tree, can be grown for their edible pine nuts (pinhões), medicinal properties, and ornamental purposes.
Leandro Marcolino Vieira +4 more
doaj +1 more source
Universal behavior of a dispersive Dirac cone in gradient-index plasmonic metamaterials
Physical Review B, 2018 We demonstrate analytically and numerically that the dispersive Dirac cone emulating an epsilon-near-zero (ENZ) behavior is a universal property within a family of plasmonic crystals consisting of two-dimensional (2D) metals. Our starting point is a periodic array of 2D metallic sheets embedded in an inhomogeneous and anisotropic dielectric host that ...
Maier, Matthias +4 more
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Bioinspired Adaptive Sensors: A Review on Current Developments in Theory and Application
Advanced Materials, EarlyView.This review comprehensively summarizes the recent progress in the design and fabrication of sensory‐adaptation‐inspired devices and highlights their valuable applications in electronic skin, wearable electronics, and machine vision. The existing challenges and future directions are addressed in aspects such as device performance optimization ...
Guodong Gong +12 more
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Kelvin Probe Force Microscopy in Bionanotechnology: Current Advances and Future Perspectives
Advanced Materials, EarlyView.Kelvin probe force microscopy (KPFM) enables the nanoscale mapping of electrostatic surface potentials. While widely applied in materials science, its use in biological systems remains emerging. This review presents recent advances in KPFM applied to biological samples and provides a critical perspective on current limitations and future directions for
Ehsan Rahimi +4 more
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Advanced Materials, EarlyView.Magnetic doping of the topological insulator Bi2Te3 with erbium adatoms induces out‐of‐plane magnetism and breaks time‐reversal symmetry, opening a Dirac gap and driving a Fermi surface transition from hexagonal to star‐of‐David geometry. Microscopy, spectroscopy, and magnetic dichroism reveal atomically controlled magnetic interactions that tailor the
Beatriz Muñiz Cano +18 more
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An index formula for the intersection Euler characteristic of an infinite cone
Comptes Rendus. Mathématique, 2016 The aim of this note is to establish an index formula for the intersection Euler characteristic of a cone. The main actor of these notes is the model Witten Laplacian on the infinite cone. First, we study its spectral properties and establish a McKean–Singer-type formula.
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Directional Flow of Confined Polaritons in CrSBr
Advanced Materials, EarlyView.CrSBr, a layered magnetic semiconductor, naturally channels self‐hybridized excitonpolaritons into highly directional flow. Its intrinsic optical anisotropy, high refractive index, and strong lightmatter coupling enable long‐range guided modes along the a‐axis, with propagation lengths set by their excitonphoton admixture.
Pratap Chandra Adak +10 more
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