Charles Ehresmann's concepts in differential geometry
, 2007 We outline some of the tools C. Ehresmann introduced in Differential Geometry (fiber bundles, connections, jets, groupoids, pseudogroups). We emphasize two aspects of C.
P. Libermann
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Advanced Functional Materials, EarlyView.This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner +9 more
wiley +1 more source
A Suggested Mathematics Curriculum for Preparation of Teachers of Modern Secondary School Mathematics in Utah [PDF]
, 1967 New math has drastically changed secondary mathematics and the demands on the secondary ma thematics teacher. The changes and effects of changes w re studied with emphasis on suggested programs in teacher preparation.
Philips, Harold Nolan
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Low‐Loss Far‐Infrared Surface Phonon Polaritons in Suspended SrTiO3 Nanomembranes
Advanced Functional Materials, EarlyView.The low‐loss, highly confined, and thickness‐tunable surface phonon polaritons are demonstrated in the far‐infrared regime within transferable freestanding SrTiO3 membranes, achieving high figures of merit comparable to the previous record values from the vdW materials.
Konnor Koons +8 more
wiley +1 more source
Tunable Thermoshrinkable Hydrogels for 4D Fabrication of Cell‐Seeded Channels
Advanced Functional Materials, EarlyView.A thermoresponsive polymer with methacrylate groups for photo‐cross‐linking, based on polyethylene glycol, N‐isopropylacrylamide, and 2‐hydroxyethyl acrylate is synthetized to yield hydrogels that shrink upon temperature increase. The new polymer enables the fabrication of cell‐laden perfusable channels with diameters below 200 µm by combining ...
Greta Di Marco +12 more
wiley +1 more source
Advanced Functional Materials, EarlyView.MXene dervied CoFe composites show increased initial Oxygen Evolution Reaction (OER) activity compared to the pure CoFe and MXene in an Anion Exchange Membrane device. Vanadium vacancies in the MXene plays a role in increased OER activity and hinders Fe leaching in the AEM device over using the pure V2C MXene as a support material for the CoFe ...
Can Kaplan +16 more
wiley +1 more source
Reconfigurable Three‐Dimensional Superconducting Nanoarchitectures
Advanced Functional Materials, EarlyView.3D superconducting nanostructures offer new possibilities for emergent physical phenomena. However, fabricating complex geometries remains challenging. Here 3D nanoprinting of complex 3D superconducting nanoarchitectures is established. As well as propagating superconducting vortices in 3D, anisotropic superconducting properties with geometric ...
Elina Zhakina +11 more
wiley +1 more source
Conformally Perforated Shellular Metamaterials with Tunable Thermomechanical and Acoustic Properties
Advanced Functional Materials, EarlyView.This study introduces Conformally Perforated Shellular Metamaterials (CPSMs), which overcome TPMS design limitations by mapping 2D cellular layouts onto 3D surfaces. CPSMs exhibit enhanced elastic stiffness, thermal conductivity, and acoustic performance compared to intact P‐type shellulars, demonstrating their potential as multifunctional ...
Benyamin Shahryari +8 more
wiley +1 more source
Brief Mentions - G. Leitman, Topics in Optimization (Academic Press Inc., New York, 1967), xv+469 pp., $18.00. - H. J. Kushner, Stochastic Stability and Control (Academic Press Inc., New York, 1967), xi+161 pp. - A. Tuller, A Modern Introduction to Geometries (D. van Nostrand & Co., London, 1967), ix+201 pp., 60s. - A. W. Wallace, Differential Topology: First Steps (W. A. Benjamin Inc., New York, 1968), 130 pp., $9.50 cloth, $3.95 paper. - V. E. Benes, Mathematical Theory of Connecting … [PDF]
, 1969 openalex +1 more source
Singularities and Differential Geometry Proceedings of the symposium held at Department of Mathematics, Faculty of Science, Hokkaido University, January ...
Ishikawa, Goo, Izumiya, Shyuichi
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