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Modulation of surface phonon polaritons in MoO via dynamic doping of SiC substrate.
Nanophotonics
January 2025
Departamento de Ingeniería Electrónica, E.T.S.I. de Telecomunicación, Instituto de Sistemas Optoelectrónicos y Microtecnología (ISOM), Universidad Politécnica de Madrid, Madrid, 28040 Spain.
Polar biaxial crystals with extreme anisotropy hold promise for the spatial control and the manipulation of polaritons, as they can undergo topological transitions. However, taking advantage of these unique properties for nanophotonic devices requires to find mechanisms to modulate dynamically the material response. Here, we present a study on the propagation of surface phonon polaritons (SPhPs) in a photonic architecture based on a thin layer of α-MoO deposited on a semiconducting 4H-SiC substrate, whose carrier density can be tuned through photoinduction.
View Article and Find Full Text PDFTreatment of Transcatheter Aortic Valve Thrombosis: JACC Review Topic of the Week.
J Am Coll Cardiol
August 2024
Department of Cardiology, Thoraxcenter, Erasmus University Medical Center, Rotterdam, the Netherlands. Electronic address:
Transcatheter aortic valve (TAV) thrombosis may manifest as subclinical leaflet thrombosis (SLT) and clinical valve thrombosis. SLT is relatively common (10%-20%) after transcatheter aortic valve replacement, but clinical implications are uncertain. Clinical valve thrombosis is rare (1.
View Article and Find Full Text PDFTime-of-flight resolved stimulated Raman scattering microscopy using counter-propagating ultraslow Bessel light bullets generation.
Light Sci Appl
July 2024
Optical Bioimaging Laboratory, Department of Biomedical Engineering, College of Design and Engineering, National University of Singapore, Singapore, 117576, Singapore.
Article Synopsis
- A new microscopy technique called B-SRS uses Bessel light bullets to achieve high-resolution 3D chemical imaging in deep tissue without mechanical z-scanning.
- This method generates counter-propagating pump and Stokes light bullets with ultraslow and tunable velocities, enabling better optical sectioning.
- The B-SRS system has demonstrated over two-fold improved imaging depth in porcine brain tissue compared to traditional methods and can be applied to various biological samples and other imaging technologies.
Mechanical prosthetic valve thrombosis: A literature review of treatment strategies.
Curr Probl Cardiol
July 2024
Cedars-Sinai Smidt Heart Institute, Los Angeles, CA, USA.
Mechanical prosthetic valve thrombosis (MPVT) is a common complication of valvular implantations. This study compared the efficacy and safety of different treatments for MPVT. A systematic search of electronic databases identified studies evaluating surgical, anticoagulant, and thrombolytic therapies.
View Article and Find Full Text PDFNeuromorphic one-shot learning utilizing a phase-transition material.
Proc Natl Acad Sci U S A
April 2024
Department of Neuroscience and Cell Biology, Robert Wood Johnson Medical School, Rutgers, The State University of New Jersey, Piscataway, NJ 08854.
Design of hardware based on biological principles of neuronal computation and plasticity in the brain is a leading approach to realizing energy- and sample-efficient AI and learning machines. An important factor in selection of the hardware building blocks is the identification of candidate materials with physical properties suitable to emulate the large dynamic ranges and varied timescales of neuronal signaling. Previous work has shown that the all-or-none spiking behavior of neurons can be mimicked by threshold switches utilizing material phase transitions.
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