In this article, two structures are proposed for all-optical AND, XOR, and OR logic gates based on nonlinear photonic crystals. The include a Y-junction ring resonator-based limiters. Two different designed as the limiter in order to produce AND–XOR AND–OR gates. Nonlinear rods of structure have been used create frequency shift values input power. Finite difference time domain method has utilized simulate performance Simulation results show that smallest ON–OFF logic-level contrast ratio...

A two-dimensional triangular lattice solid/fluid phononic crystal (PnC) is proposed as a sensitive biosensor to detect the temperature of Methyl Nonafluorobutyl Ether (MNE) in range 10–40 °C. Temperature changes MNE represent an important issue for its various applications. Indeed, widely used cosmetic and beauty products non-toxic, non-flammable, colorless chemical properties. For this purpose, physical properties appears necessary. The PnC consists tungsten cylinders embedded epoxy...

We simulate a phoxonic crystal which shows complete phononic and TM-polarized photonic bandgaps. The constituent materials are tungsten polymethyl methacrylate, we obtained these bandgaps with filling factor of only 28%, is very compatible the fabrication method. A cavity was then defined that selects narrow passbands optical elastic waves. In order to maximize quality factor, defect rod added in output waveguide. final structure filters an wavelength 840 nm (with corresponding frequency 357...

In this investigation, a phononic crystal-based fiber is proposed for energy harvesting application in metalworking factories. Phononic crystal plays the role of cladding elastic structure. Each single-core fibers includes tungsten hollow cylinder central region which its internal radius different three fibers. Incident waves with frequency from 25 to 40 kHz 1/3 octave band are confined core and transmitted desired distance. High confinement transmission ability without significant...

Abstract In this paper, a novel phononic crystal fiber with conical input is introduced for coupling environmental acoustic waves to the core. Environmental can be focused and coupled core through input. first step, cone shape coupler has been considered incident region. This initial idea significant energy loss. disadvantage encourages us design new without it. Designed structure includes meaning solid rods have shaped in way at section of fiber. By using structure, properly region Acoustic...

The healthcare industry is generating a massive volume of data, promising potential goldmine information that can be extracted through machine learning (ML) techniques. Intensive Care Unit (ICU) stands out as focal point within hospitals and provides rich source data for informative analyses. This study examines the cardiac surgery ICU, where vital topic patient ventilation takes center stage. In other words, ventilator-supported breathing fundamental need limited availability ventilators in...

Abstract The aim of this study is to introduces an innovative, high-sensitive ultrasonic sensor using phononic crystal technology. It specifically engineered detect low-level concentrations <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:msub> <mml:mrow> <mml:mi mathvariant="normal">CdBr</mml:mi> </mml:mrow> <mml:mn>2</mml:mn> </mml:msub> </mml:math> , which recognized as a heavy metal ion exhibiting significant levels toxicity and capable infiltrating...

We propose a novel design to simultaneously access various optical logic functions from different output ports. Logical values of inputs and outputs are defined in phase intensity area light, respectively. The proposed structure is composed one multimode interference waveguide with the ultrasmall size 2.5 μm × 21 μm. Three ports offer XOR, NAND, OR functions. In addition, XNOR NOT gates realized by considering some changes conditions. Beam propagation method has been utilized accomplish...

In this research, the numerical analyzing procedure for a two-dimensional (2D) solid-fluid phononic crystal (PnC) demultiplexer is presented. The acts as selective sensor that could separate three dangerous heavy metals (CuSO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> , MgSO and MnSO ) with very low concentration of 1% added in water. platform consists T-model waveguide hollow cylinder branches. PnC designed square arrangement...

Abstract In this research, the sensing NaI (sodium iodide)–water concentration is achieved by using a local resonant two-dimensional solid–liquid phononic crystal (PnC) design. The sensor design consists of square arrangement from stainless steel as host matrix and periodic array water-filled circular scatterers. mechanism based on resonance frequencies confined around waveguide embedded in middle structure. Numerical simulations are carried out finite element method (FEM). Our results...

Abstract This paper proposes a solid–liquid phononic crystal-based acoustic modulator which can be effectively controlled by an external magnetic field. design is particularly well-suited for communication systems. The consists of square lattice steel cylinders embedded in water as the substrate. By selectively removing specific rods, symmetric Mach–Zehnder interferometer (MZI) formed. ferromagnetic material Terfenol-D inserted into sensing (upper) arm MZI inclusion. Applying fields varying...

We present the case study of a complex, mixed-initiative scheduling system to illustrate Work-Centered Design (WCD), new approach for design information systems. WCD is based on theory distributed cognition and extends established user-centered methods with abstract task modeling, using innovative techniques work ontology top-level algorithms capture logic human-computer interaction paradigm. addresses long-standing need more effective function allocation. The illustrating succeeded large,...

Abstract This article presents an all-optical multi-mode interference switch in which the non-linear directional coupler is utilized to realize a passive phase shifter. The proposed structure can be used either as 1 × 2 or switch, with two inputs applied simultaneously latter case. operation of device mainly based on difference section. beam propagation method for design and simulation structure. results approve low sensitivity wavelength fabrication tolerances. crosstalk equal −31.6 dB.