Results 31 to 40 of about 1,795 (184)

A Fast Multipole Method for axisymmetric domains

open access: yesCoRR, 2023
The Fast Multipole Method (FMM) for the Poisson equation is extended to the case of non-axisymmetric problems in an axisymmetric domain, described by cylindrical coordinates. The method is based on a Fourier decomposition of the source into a modal expansion and the evaluation of the corresponding modes of the field using a two-dimensional tree ...
openaire   +2 more sources

Chiral Phase Change Nanomaterials

open access: yesAdvanced Functional Materials, EarlyView.
This work demonstrates reversible, non‐volatile phase transitions in chiral Ge2${\rm Ge}_2$Sb2${\rm Sb}_2$Te5${\rm Te}_5$ (GST) nanohelices for high‐speed optical modulation of chirality and dynamic control of the state of polarization (SOP). The chiral nanostructures are fabricated using a highly directional, wafer‐scale physical vapor deposition ...
Joshua A. Burrow   +11 more
wiley   +1 more source

Data‐driven execution of fast multipole methods [PDF]

open access: yesConcurrency and Computation: Practice and Experience, 2013
SUMMARYFast multipole methods (FMMs) havecomplexity, are compute bound, and require very little synchronization, which makes them a favorable algorithm on next‐generation supercomputers. Their most common application is to accelerateN‐body problems, but they can also be used to solve boundary integral equations.
Hatem Ltaief, Rio Yokota
openaire   +3 more sources

FleCSPH: The next generation FleCSIble parallel computational infrastructure for smoothed particle hydrodynamics

open access: yesSoftwareX, 2020
FleCSPH is a smoothed particle hydrodynamics simulation tool, based on the compile-time configurable framework FleCSI. The asynchronous distributed tree topology combined with a fast multipole method allows FleCSPH to efficiently compute hydrodynamics ...
Julien Loiseau   +7 more
doaj   +1 more source

Mechanotransduction of Magnetically Applied Forces Leads to Mechanical Stiffening of Platelet‐Rich Plugs

open access: yesAdvanced Healthcare Materials, EarlyView.
A microfluidic device with magnetic microposts was used to assess platelet mechanobiology. The oscillatory actuation of posts with embedded iron particles was dampened by the dynamic stiffening of the platelet‐rich plugs. This stiffening process increased with applied load, but inhibiting platelet activation (ASA) or myosin contractility (blebbistatin)
Nikita Taparia   +4 more
wiley   +1 more source

On the Application of the Incomplete QR Algorithm to the Analysis of Microstrip Antennas [PDF]

open access: yesRadioengineering, 2016
In this paper, we provide some insight into the usage of fast, iterative, method-of-moments (MoM) solution of integral equations (IE) describing antennas and other metallic structures immersed in a planar multilayered environment.
P. Gluchowski, A. A. Kucharski
doaj  

Kelvin Probe Force Microscopy in Bionanotechnology: Current Advances and Future Perspectives

open access: yesAdvanced Materials, EarlyView.
Kelvin probe force microscopy (KPFM) enables the nanoscale mapping of electrostatic surface potentials. While widely applied in materials science, its use in biological systems remains emerging. This review presents recent advances in KPFM applied to biological samples and provides a critical perspective on current limitations and future directions for
Ehsan Rahimi   +4 more
wiley   +1 more source

The Fast Multipole Method: Numerical Implementation [PDF]

open access: yesJournal of Computational Physics, 2000
The paper studies algorithmic problems and computational aspects for solving integral equations for electromagnetic scattering problems with the fast multipole method. The paper analyses several techniques to reduce the complexity constant of the method and provides impressive numerical results.
openaire   +1 more source

A Cu‐Based Near‐IR Active MOF with an Ion‐Pair Guest Exhibiting Versatile and Selective Gas‐Solid Reactivity

open access: yesAdvanced Materials, EarlyView.
The new Cu‐containing MOF (Me2NH2)(CuICl2)@[Cu4(INA)4Cl2O]·1.5dmf (3) contains a cation and an anion as guests and shows UV‐near‐mid‐IR absorption and near‐IR emission. MOF 3 shows gas‐solid reactivity in the presence of NH3 and HCOOH to yield two new 3D MOF.
Rajat Saha   +10 more
wiley   +1 more source

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