Results 41 to 50 of about 7,053 (306)
[INVITED] Subwavelength structures for silicon photonics biosensing
Optics & Laser Technology, 2019 Silicon photonic biosensors hold the potential for highly accurate, yet low cost point-of-care devices. Maximizing the sensitivity of the sensing chips while reducing the complexity and cost of the read-out system is pivotal to realize this potential. Here we present an extensive analysis, both from a practical and a theoretical perspective, of current
Wangüemert-Pérez, J. Gonzalo +8 more
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Enhanced Conversion Efficiency for Solar Cells With Periodic Grating of Nanowires
IEEE Photonics Journal, 2013 The absorption of an amorphous silicon thin film with periodic gratings formed by an array of nanowires with varied heights and different profile shapes is studied.
Ya Han Ye +2 more
doaj +1 more source
Asymmetric transmission in nanophotonics
Nanophotonics, 2023 In a reciprocal medium, transmission of electromagnetic (EM) waves is symmetric along opposite directions which restrict design and implementation of various systems in optics and photonics.
Sheikh Ansari Abbas +2 more
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Subwavelength light bending by metal slit structures
Optics Express, 2005 We discuss how light can be efficiently bent by nanoscale-width slit waveguides in metals. The discussion is based on accurate numerical solutions of Maxwell's equations. Our results, using a realistic model for silver at optical wavelengths, show that good right-angle bending transmission can be achieved for wavelengths lambda> 600 nm.
Tae-Woo, Lee, Stephen, Gray
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Subwavelength structured surfaces and their applications [PDF]
SPIE Proceedings, 1993 Subwavelength structured surfaces have a multitude of applications. These include antireflection suppression, fabrication of polarization components, narrowband filters, and phase plates. All of these applications offer advantages over conventional components.
Daniel H. Raguin +2 more
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Advanced Functional Materials, EarlyView.The study proposes a 1‐bit programmable metasurface based on flip‐disc display, named flip‐disc metasurface (FD‐MTS). This new design enables ultralow energy consumption while maintaining coding patterns. It also exhibits high scalability and multifunctional flexibility.
Jiang Han Bao +8 more
wiley +1 more source
Optical Interaction of a Pair of Nanoholes in Au Film via Surface Plasmon Polaritons
IEEE Photonics Journal, 2014 The optical interaction mechanism of a nanohole pair milled in an opaque gold film by means of surface plasmon polaritons (SPPs) propagation is investigated.
M. Janipour +2 more
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Laser-induced subwavelength structures by microdroplet superlens
Optics Express, 2019 Nanoscale patterns on rigid or flexible substrates are of considerable interest in modern nanophotonics and optoelectronics devices. Subwavelength structures are produced in this study by using a laser beam and microdroplets that carry nanoparticles to the deposition substrate. These droplets are generated from an aqueous suspension of nanoparticles by
Eduardo, Castillo-Orozco +2 more
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Three‐dimensional Antimony Sulfide Based Flat Optics
Advanced Functional Materials, EarlyView.This work presents the development of a grayscale electron beam lithography (g‐EBL) method for fabricating antimony trisulfide (Sb2S3) nanostructures with customizable 3D profiles. The refractive index of g‐EBL patterned Sb2S3 is determined based on the synergy of genetic algorithm and transfer matrix method.
Wei Wang +18 more
wiley +1 more source
Joint Control of Radiated and Surface Waves via Space‐Time Coding Metasurfaces
Advanced Functional Materials, EarlyView.A unified space‐time coding metasurface platform enables simultaneous control of radiated and surface‐confined waves across multiple harmonics. Demonstrated functionalities include multi‐frequency beam shaping; surface‐wave excitation, and hybrid multiplexing.
Zihao Dai +6 more
wiley +1 more source