Department of Physics and Astronomy, Uppsala University, Lägerhyddsvägen 1, Uppsala, 75120, Sweden.
Published: January 2021
AI Article Synopsis
Article Abstract
As we read this text, our eyes dynamically adjust the focal length to keep the image in focus on the retina. Similarly, in many optics applications the focal length must be dynamically tunable. In the quest for compactness and tunability, flat lenses based on metasurfaces were introduced. However, their dynamic tunability is still limited because their functionality mostly relies upon fixed geometry. In contrast, we put forward an original concept of a tunable Optical Magnetic Lens (OML) that focuses photon beams using a subwavelength-thin layer of a magneto-optical material in a non-uniform magnetic field. We applied the OML concept to a wide range of materials and found out that the effect of OML is present in a broad frequency range from microwaves to visible light. For terahertz light, OML can allow 50% relative tunability of the focal length on the picosecond time scale, which is of practical interest for ultrafast shaping of electron beams in microscopy. The OML based on magneto-optical natural bulk and 2D materials may find broad use in technologies such as 3D optical microscopy and acceleration of charged particle beams by THz beams.
Polarization and wavelength multiplexed metalenses address the bulkiness of traditional imaging systems. However, despite progress with numerical simulations and parameter scanning, the engineering complexity of classical methods highlights the urgent need for efficient deep learning approaches. This paper introduces a deep learning-driven inverse design model for polarization-multiplexed metalenses, employing propagation phase theory alongside spectral transfer learning to address chromatic dispersion challenges.
In this Letter, we propose a class of plasmon that exhibits properties such as autofocusing and self-bending. In a butterfly plasmon, several new dimensions of focus modulation are introduced. By adjusting its initial phase, the position, the length, the intensity, and the bending direction of the plasmonic focus can be precisely controlled, demonstrating a high degree of tunability.
Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Department of Surgery, Khoo Teck Puat Hospital, Singapore; Lee Kong Chian School of Medicine, Nanyang Technological University of Singapore, Singapore.
Background: Fungating breast wounds cause significant complications and morbidity to patients. Wound care is of paramount importance in optimising care and alleviating suffering for patients with malignant breast wounds. Currently, routinely implemented objective assessment tools for fungating breast wound treatment outcomes are non-existent, and institutional practice varies.
National and Provincial Joint Laboratory of Exploration and Utilization of Marine Aquatic Genetic Resources, National Engineering Research Center of Marine Facilities Aquaculture, Zhejiang Ocean University, Zhoushan 316022, P.R. China. Electronic address:
Interleukin 6 (IL-6) is one of the cytokines found to be multifunctional and biologically effective, regulating immune and inflammatory response by interacting with receptors to transmit signals. In this study, the full-length cDNAs of IL-6 (named as NaIL-6) and its receptors IL-6R and gp130 (named as NaIL-6Rα and NaIL-6Rβ) of Nibea albiflora were acquired and they possessed the typical symbolic motifs similar to its teleost orthologues in multiple sequence comparisons. The phylogenetic trees showed that NaIL-6 and its receptors clustered with their counterparts in bony fish, and had the closest affinity to Larimichthys crocea.
Department of Gastroenterology, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan.
Background: The treatment of hepatolithiasis in patients who underwent hepaticojejunostomy (HJS) is challenging. In this study, we aimed to clarify the therapeutic outcomes of double balloon enteroscopy (DBE) and percutaneous transhepatic biliary drainage (PTBD) for hepatolithiasis after HJS.
Methods: Patients who underwent DBE or PTBD for hepatolithiasis after HJS at Hiroshima University Hospital were enrolled, and treatment outcomes and recurrence were compared.
