Results 111 to 120 of about 418,956 (371)
Double Helical Plasmonic Antennas
Advanced Functional Materials, EarlyView.Plasmonic double helical antennas funnel circularly polarized light to the nanoscale, offering strong chiroptical interaction and directional light emission. Extending a single helix design tool, this study combines numerical modeling with experimental validation, revealing large, broadband dissymmetry factors in the visible range.
Aleksei Tsarapkin +7 more
wiley +1 more source
Microwave Components Realized by Additive Manufacturing Techniques [PDF]
Radioengineering, 2020 This paper presents an overview of the use of additive manufacturing (AM) technologies for the implementation of microwave components. Two major technological solutions, based on the AM of plastic materials, are discussed: in the former case, the AM ...
C. Tomassoni, M. Bozzi
doaj
Condensed Matter, 2020 Calculations of the field distribution in the structure of the dielectric substrate/buffer layer/volume phase grating/analyzed medium were performed.
Stefano Bellucci +3 more
doaj +1 more source
Exact equivalent-profile formulation for bent optical waveguides [PDF]
arXiv, 2006 A widespread, intuitive and computationally inexpensive method to analyze light guidance through waveguide bends is by introducing an equivalent straight waveguide with refractive index profile modified to account for actual waveguide bend. Here we revise the commonly used equivalent-index formula, ending up with its simple extension that enables ...
arxiv
Plasmonic Tamm states: second enhancement of light inside the plasmonic waveguide [PDF]
, 2014 A type of Tamm states inside metal-insulator-metal (MIM) waveguides is proposed. An impedance based transfer matrix method is adopted to study and optimize it. With the participation of the plasmonic Tamm states, fields could be enhanced twice: the ffirst is due to the coupling between a normal waveguide and a nanoscaled plasmonic waveguide and the ...
arxiv +1 more source
Optoelectronic Devices for In‐Sensor Computing
Advanced Materials, EarlyView.The raw data obtained directly from sensors in the noisy analogue domain is often unstructured, which lacks a predefined format or organization and does not conform to a specific data model. Optoelectronic devices for in‐sensor visual processing can integrate perception, memory, and processing functions in the same physical units, which can compress ...
Qinqi Ren +7 more
wiley +1 more source
Pressure Sensitive Adhesive Tape: A Versatile Material Platform for Optical Sensors
Sensors, 2020 Pressure sensitive adhesive (PSA) tapes are a versatile, safe and easy-to-use solution for fastening, sealing, masking, or joining. They are widely employed in daily life, from domestic use to industrial applications in sectors such as construction and ...
Carlos Angulo Barrios
doaj +1 more source
High-density waveguide superlattices with low crosstalk
Nature Communications, 2015 Silicon photonics holds great promise for low-cost large-scale photonic integration. In its future development, integration density will play an ever-increasing role in a way similar to that witnessed in integrated circuits.
Weiwei Song +10 more
semanticscholar +1 more source
Advanced Materials, EarlyView.Convergence drawing is used to create flexible, microscale, multifunctional fiber‐based neural probes. Optimized materials selection enables individual devices to perform neural recording, electrical stimulation, optogenetics, fiber photometry, fluid delivery, and voltammetric neurotransmitter detection in rodents.
Nicolette Driscoll +16 more
wiley +1 more source
Fluorescent Bulk Waveguide Sensor in Porous Glass: Concept, Fabrication, and Testing
Nanomaterials, 2020 In this work, we suggest the new concept of sensing elements—bulk waveguides (BWGs) fabricated by the laser direct writing technique inside porous glass (PG).
Zhong Lijing +3 more
doaj +1 more source