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Endovascular approach to acute aortic trauma

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World Journal of Radiology 2009年第1期1卷 50-62页

作者： Riyad Karmy-Jones Desarom Teso Nicole Jackson Lisa Ferigno robert bloch Division of Cardiac Thoracic and Vascular SurgerySouthwest Washington Medical CenterSuite 330 400 NE Mother Joseph PlaceVancouverWA 98664United States Division of Trauma/Critical Care Southwest Washington Medical CenterVancouverWA 98664United States Division of Radiology Southwest Washington Medical CenterVancouverWA 98664United States

Traumatic thoracic aortic injury remains a major cause of death following motor vehicle *** approaches have begun to supersede open repair,offering the hope of reduced morbidity and *** available endovascular technology is associated with specific anatomic considerations and *** paper will review the current status of endovascular management of traumatic thoracic aortic injuries.

关键词： Aorta Complications Outcomes Traumatic Endovascular

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具有半子模式欧拉拓扑绝缘体的声学观测

Science Bulletin 2024年第11期69卷 1653-1659页

作者：姜斌 Adrien Bouhon 吴世巧孔泽霖林志康 robert-Jan Slager 蒋建华 Suzhou Institute for Advanced Research University of Science and Technology of ChinaSuzhou 215123China School of Physical Science and Technology&Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow UniversitySuzhou 215006China TCM Group Cavendish LaboratoryUniversity of CambridgeCambridge CB30HEUK NORDITA Stockholm University and KTH Royal Institute of TechnologyStockholm SE-10691Sweden

Topological band theory has conventionally been concerned with the topology of bands around a single gap. Only recently non-Abelian topologies that thrive on involving multiple gaps were studied, unveiling a new horizon in topological physics beyond the conventional paradigm. Here, we report on the first experimental realization of a topological Euler insulator phase with unique meronic characterization in an acoustic metamaterial. We demonstrate that this topological phase has several nontrivial features:First, the system cannot be described by conventional topological band theory, but has a nontrivial Euler class that captures the unconventional geometry of the bloch bands in the Brillouin ***, we uncover in theory and probe in experiments a meronic configuration of the bulk bloch states for the first time. Third, using a detailed symmetry analysis, we show that the topological Euler insulator evolves from a non-Abelian topological semimetal phase via. the annihilation of Dirac points in pairs in one of the band gaps. With these nontrivial properties, we establish concretely an unconventional bulk-edge correspondence which is confirmed by directly measuring the edge states via. pump-probe techniques. Our work thus unveils a nontrivial topological Euler insulator phase with a unique meronic pattern and paves the way as a platform for non-Abelian topological phenomena.

关键词： Euler insulators Meronic waves Acoustic metamaterials Topological phases of matter

Weighted Composition Operators from the bloch Space to Weighted Banach Spaces on Bounded Homogeneous Domains

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Analysis in Theory and Applications 2014年第2期30卷 236-248页

作者： robert F.Allen Department of Mathematics University of Wisconsin-La Crosse

We study the bounded and the compact weighted composition operators from the bloch space into the weighted Banach spaces of holomorphic functions on bounded homogeneous domains, with particular attention to the unit polydisk. For bounded homogeneous domains, we characterize the bounded weighted composition operators and determine the operator norm. In addition, we provide sufficient conditions for compactness. For the unit polydisk, we completely characterize the compact weighted composition operators, as well as provide ＂computable＂ estimates on the operator norm.

关键词： Weighted composition operators bloch space weighted Banach space homogeneous domain.

Experimental evidence of bloch surface waves on photonic crystals with thin-film LiNbO_3 as a top layer

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光子学研究：英文版 2017年第6期5卷 168-172页

作者： TATIANA KOVALEVICH DJAFFAR BELHARET LAURENT robert MYUN-SIK KIM HANS PETER HERZIG THIERRY GROSJEAN MARIA-PILAR BERNAL Département d'Optique P.M.Duffieux Institut FEMTO-ST UMR 6174 CNRS Université Bourgogne Franche-Comté Optics & Photonics Technology Laboratory Ecole Polytechnique Fédérale de Lausanne (EPFL)

Strong nonlinear, electro-optical, and thermo-optical properties of lithium niobate(LN) have gained much attention. However, the implementation of LiNbO_3 in real devices is not a trivial task due to difficulties in manufacturing and handling thin-film LN. In this study, we investigate an optical device where the bloch surface wave(BSW) propagates on the thin-film LN to unlock its properties. First, access to the LN film from air(or open space) is important to exploit its properties. Second, for sustaining the BSW, one-dimensional photonic crystal(1DPhC) is necessary to be fabricated under the thin-film LN. We consider two material platforms to realize such a device: bulk LN and commercial thin-film LN. Clear reflectance dips observed in far-field measurements demonstrate the propagation of BSWs on top of the LN surface of the designed 1DPhCs.

关键词： LN Li Experimental evidence of bloch surface waves on photonic crystals with thin-film LiNbO3 as a top layer