21 papers · ranked by Valyu relevance
Temiz, Murat, Bakken, Vemund
This study proposes an antenna simulation framework powered by graphics processing units (GPUs) based on an open-source electromagnetic (EM) simulation software (gprMax) for machine learning applications of antenna design and optimization. Furthermore, it compares the simulation results with those obtained through…
ZACH E. NICHOLS, LAHARI SAHA, RACHAEL KNOBLAUCH, TONYA M. SANTAUS + 1 more
'CHRIS D. GEDDES'] Sample preparation is one of the most time-consuming steps in diagnostic assays, particularly those involving biological samples. In this paper we report the results of finite-difference time-domain (FDTD) simulations and thermographic imaging experiments carried out with the intent of designing a…
Katherine Han, Chih-Hung Chang
This paper reviews the current progress in mathematical modeling of anti-reflective subwavelength structures. Methods covered include effective medium theory (EMT), finite-difference time-domain (FDTD), transfer matrix method (TMM), the Fourier modal method (FMM)/rigorous coupled-wave analysis (RCWA) and the finite…
Francesca Troiani, Konstantin Nikolic, Timothy G. Constandinou, Sanjoy Bhattacharya
'Sanjoy Bhattacharya'] We present a finite difference time domain (FDTD) model for computation of A line scans in time domain optical coherence tomography (OCT). The OCT output signal is created using two different simulations for the reference and sample arms, with a successive computation of the interference signal…
Arya Fallahi
Mithra, also spelled Mithras, Sanskrit Mitra, in ancient Indo-Iranian mythology, is the god of light, whose cult spread from India in the east to as far west as Spain, Great Britain, and Germany. The first written mention of the Vedic Mitra dates to 1400 BC. His worship spread to Persia and, after the defeat of the…
Dmitry Kuklin
The work presents elecode, open-source software for various electrical engineering applications that require considering electromagnetic processes. The primary focus of the software is power engineering applications. However, the software does not impose any specific limitations preventing other uses. In contrast to…
YingJie Gao, HongWei Yang, Josué Sznitman
An explicit high-order, symplectic, finite-difference time-domain (SFDTD) scheme is applied to a bioelectromagnetic simulation using a simple model of a pregnant woman and her fetus. Compared to the traditional FDTD scheme, this scheme maintains the inherent nature of the Hamilton system and ensures energy conservation…
Kae-An Liu, Costas D. Sarris
—This paper introduces a new computational framework to derive electromagnetic field derivatives with respect to multiple design parameters up to any order with the Finite-Difference Time-Domain (FDTD) technique. Specifically, only one FDTD simulation is needed to compute the first-order field derivatives with respect…
Dafnik Saril Kumar David, Yeongseok Jeong, Yin Chao Wu, Suyun Ham + 2 more
'Hanfei Mei' 'Victor Giurgiutiu'] This paper discusses the challenges in characterizing electromagnetic (EM) waves propagating through inhomogeneous media, such as reinforced cement concrete and hot mix asphalt. Understanding the EM properties of materials, including their dielectric constant, conductivity, and…
M. Mosleh E. Abu Samak, A. Ashrif A. Bakar, Muhammad Kashif, Mohd Saiful Dzulkifly Zan + 4 more
'Mohd Saiful Dzulkifly Zan' 'Teen-Hang Meen' 'Shoou-Jinn Chang' 'Stephen D. Prior' 'Artde Donald Kin Tak Lam'] This paper discusses numerical analysis methods for different geometrical features that have limited interval values for typically used sensor wavelengths. Compared with existing Finite Difference Time Domain…
Authors not listed
In the field of mid-infrared (m-IR) applications, there is a need to control thermal radiation from metal-insulator-metal (MIM) metasurfaces without any optical components. Here, we introduce the concept of metalens for the MIM metasurfaces. The finite difference time domain (FDTD) simulation was used to design the…
Xi Liu, Wenxi Fang, Ken Perlin
Classical neuronal cable theory relies on quasi-static electric field approximations and neglects magnetic induction, Lorentz force coupling, and transient electromagnetic currents, limiting its ability to fully characterize action potential propagation within geometrically branched axons and dendrites. This work…
Elyes Balti, Brian K. Johnson
—This paper presents a global framework analysis of a microstrip antenna design circularly polarized with an operating frequency of 5.80 GHz and a bandwidth of at least 500 MHz. We evaluate the optimal antenna parameters to design requirements. Capitalizing on these parameters, we simulate the radiation model of this…
Authors not listed
We demonstrate the numerical optimization and design of thermal emission metasurfaces that selectively radiate mid-infrared (mid-IR) circularly-polarized light. The proposed three-dimensional chiral structure, formed by the multilayer stacking of antenna elements, inherently exhibits circular polarization selectivity…
Yoshiaki Nishijima, Shunya Kimura, Yu Takeshima, Saulius Jodkazis
Control of light absorption and transmission by metal-insulator-metal (MIM) metasurfaces are important for applications in optical windows. In this study we show realization of photo-thermal energy conversion for the radiative cooling. By controlling absorption and transparency of MIM metasurfaces with thin metal…
Rachel Cherry, Joseph Joel Muhanga, Hamed Mehrabi, Samuel Conlin + 1 more
Nanostructured dielectric overlayers can be used to increase light absorption in nanometer-thin films used for various optoelectronic applications. Here, the self-assembly of a close-packed monolayer of polystyrene nanospheres is used to template a core-shell polystyrene-TiO2 light-concentrating monolithic structure.…
Stephane Bancelin, Johannes Roos, U. Valentin Nägerl
We introduce Faser, a software package developed in Python as a plugin for the open-source napari platform, designed to simulate the excitation point spread functions (PSFs) of microscopes. Using a full-vectorial computational approach to simulate the electromagnetic fields within the focal region, it makes precise…
J. Tang, M. Lu, W. Yin
Biological samples exhibit frequency dependent spectra caused by the dispersion mechanism which describes a phenomenon of dielectric relaxation due to the interaction between electromagnetic field and biological samples at cellular levels. Changes in cellular structure such as cellular shape, membrane thickness and…
Thomas Couppey, Louis Regnacq, Roland Giraud, Olivier Romain + 2 more
Electrical stimulation of peripheral nerves has been used in various pathological contexts for rehabilitation purposes or to alleviate the symptoms of neuropathologies, thus improving the overall quality of life of patients. However, the development of novel therapeutic strategies is still a challenging issue requiring…
Nicolai Machholdt Høyer, Ove Christiansen
We present a new quasi-direct quantum molecular dynamics computational method which offer a compromise between quantum dynamics using a pre-computed potential energy surface (PES) and fully direct quantum dynamics. This method is termed the time-dependent adaptive density-guided approach (TD-ADGA) and is a method for…
Lukas Breitwieser, Ahmad Hesam, Jean de Montigny, Vasileios Vavourakis + 9 more
Computer simulation is an indispensable tool for studying complex biological systems. In particular, agent-based modeling is an attractive method to describe biophysical dynamics. However, two barriers limit faster progress. First, simulators do not always take full advantage of parallel and heterogeneous hardware.…