Results 31 to 40 of about 283,799 (295)
Applied Sciences, 2022 A direct algorithmic process can deal with the solution of the support–ground interaction in a circular tunnel excavation through the convergence-confinement method (CCM) with the concept of increment.
Yu-Lin Lee +5 more
doaj +1 more source
Accelerated quarks and energy loss in confinement theory [PDF]
International Journal of Modern Physics A, 2016 We study the energy loss rate (ELR) of the accelerated quark in terms of the holographic models for the two different motions, linear acceleration and uniform rotation. They are examined by two different nonconformal models with confinement. We found in both models that the value of ELR is bounded from below by the string tension of the linear ...
Ghoroku, Kazuo, Kubo, Kouki
openaire +2 more sources
Photonics, 2022 A highly sensitive non-complex cored photonic crystal fiber sensor for hazardous chemical sensing with water, ethanol, and benzene analytes has been proposed and is numerically analyzed using a full-vector finite element method.
Abdul Mu’iz Maidi +4 more
doaj +1 more source
Two-dimensional optical ring resonators based on radial Bragg resonance [PDF]
, 2003 A Bragg-reflection-based ring resonator is proposed and analyzed. Closed-form expressions for the field and dispersion curves for radial Bragg gratings and photonic bandgap crystals are derived.
Scheuer, Jacob, Yariv, Amnon
core +1 more source
Sensing and Bio-Sensing Research, 2017 A micro structure folded cladding porous shaped with circular air hole photonic crystal fiber (FP-PCF) is proposed and numerically investigated in a broader wavelength range from 1.4 µm to 1.64 µm (E+S+C+L+U) for chemical sensing purposes.
Bikash Kumar Paul +3 more
doaj +1 more source
Optica, 2023 Antiresonant, hollow-core optical fibers are currently challenging or even exceeding the loss performance of conventional solid-core fibers. Despite this progress, there are aspects of the guidance mechanism in these fibers that are still not understood.
Leah R. Murphy, David Bird
openaire +1 more source
Embedded plasmonic waveguides with Yagi-style antennas [PDF]
, 2012 High confinement in plasmonic waveguides usually comes along with high loss. We present experiments on a new approach, which allows to tune adiabatically between high confinement and low loss waveguides, connected to optical Yagi-style ...
Atwater, Harry A. +5 more
core +1 more source
Sensing and Bio-Sensing Research, 2016 This paper presents an octagonal photonic crystal fiber (O-PCF) for liquid sensing, in which both core and cladding are microstructured. Some propagation characteristics of proposed structure have been investigated by using the full vectorial finite ...
Kawsar Ahmed, Monir Morshed
doaj +1 more source
Wave-Shaped Microstructure Cancer Detection Sensor in Terahertz Band: Design and Analysis
Applied Sciences, 2023 For the quick identification of diverse types of cancer/malignant cells in the human body, a new hollow-core optical waveguide based on Photonic Crystal Fiber (PCF) is proposed and numerically studied. The refractive index (RI) differs between normal and
Md Rezaul Hoque Khan +5 more
doaj +1 more source
Effects of Parameters of Photonic Crystal Fibre on Dispersion and Confinement [PDF]
, 2017 A new design of hexagonal-lattice photonic crystal fiber, with solid core is proposed for study of dispersion and confinement loss for optical communication.
Khan, S. M. (Shahid) +1 more
core +1 more source