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We introduce the new concept of "metalines" for manipulating the amplitude and phase profile of an incident wave locally and independently. Thanks to the highly confined graphene plasmons, a transmit-array of graphene-based metalines is used to realize analog computing on an ultra-compact, integrable, and planar platform. By employing the general concepts of spatial Fourier transformation, a well-designed structure of such meta-transmit-array, combined with graded index (GRIN) lenses, can perform two mathematical operations, i.e., differentiation and integration, with high efficiency. The presented configuration is about 60 times shorter than the recent structure proposed by Silva et al. [Science343, 160 (2014)SCIEAS0036-807510.1126/science.1242818]; moreover, our simulated output responses are in better agreement with the desired analytical results. These findings may lead to remarkable achievements in light-based plasmonic signal processors at nanoscale, instead of their bulky conventional dielectric lens-based counterparts.
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http://dx.doi.org/10.1364/OL.40.005239 | DOI Listing |
J Comput Chem
January 2025
Department of Physics, Sakarya University, Sakarya, Turkey.
We investigate the comprehensive analysis's structural, electronic, optical, and elastic properties of Cs₂NaScX₆ (X = Cl, Br) double perovskites using density functional theory (DFT) implemented by the WIEN2k code. The results show that both compounds are in cubic phases. The calculated tolerance factors show both are stable compounds.
View Article and Find Full Text PDFArch Orthop Trauma Surg
December 2024
Department of Orthopaedic Surgery, Korea University Guro Hospital, 148 Gurodong-ro, Guro- gu, Seoul, 08308, Korea.
Introduction: Although sesamoid-preserving procedures have been attempted to complement sesamoidectomy for hallux sesamoid fracture nonunion, few reports document the results. Accordingly, the objective of this study was to review the outcomes of patients with hallux sesamoid fracture nonunion who underwent screw fixation with autogenous bone grafting.
Materials And Methods: Medical records of patients who underwent surgery between January 2013 and September 2022 were reviewed.
Philos Trans A Math Phys Eng Sci
December 2024
Institute for Cross-Disciplinary Physics and Complex Systems (IFISC) UIB-CSIC, Campus Universitat Illes Balears, Palma de Mallorca 07122, Spain.
Quantum optical networks are instrumental in addressing the fundamental questions and enable applications ranging from communication to computation and, more recently, machine learning (ML). In particular, photonic artificial neural networks (ANNs) offer the opportunity to exploit the advantages of both classical and quantum optics. Photonic neuro-inspired computation and ML have been successfully demonstrated in classical settings, while quantum optical networks have triggered breakthrough applications such as teleportation, quantum key distribution and quantum computing.
View Article and Find Full Text PDFJHEP Rep
January 2025
Nuffield Department of Medicine, University of Oxford, Oxford, UK.
Background & Aims: The dynamics of HBV viral load (VL) in patients with chronic hepatitis B (CHB) on nucleos(t)ide analogue (NA) treatment and its relationship with liver disease are poorly understood. We aimed to study longitudinal VL patterns and their associations with CHB clinical outcomes.
Methods: Utilising large scale, routinely collected electronic health records from six centres in England, collated by the National Institute for Health and Care Research Health Informatics Collaborative (NIHR HIC), we applied latent class mixed models to investigate VL trajectory patterns in adults receiving NA treatment.
Med Sci Monit
December 2024
Department of Orthopedics, The People's Hospital of Hechuan, Chongqing, China.
BACKGROUND High-energy injuries, like car accidents, can cause thoracolumbar burst fractures, leading to spinal instability and cord compression. Anterior decompression with stabilization provides strong support, kyphosis correction, and bone fusion. This study evaluated long-term outcomes of using a nano-hydroxyapatite/polyamide 66 strut in 38 thoracolumbar fracture cases.
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