Physics:Discrete dipole approximation

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In the discrete dipole approximation, a larger object is approximated in terms of discrete radiating electric dipoles.

Discrete dipole approximation (DDA), also known as coupled dipole approximation,[1] is a method for computing scattering of radiation by particles of arbitrary shape and by periodic structures. Given a target of arbitrary geometry, one seeks to calculate its scattering and absorption properties by an approximation of the continuum target by a finite array of small polarizable dipoles. This technique is used in a variety of applications including nanophotonics, radar scattering, aerosol physics and astrophysics.

Basic concepts

The basic idea of the DDA was introduced in 1964 by DeVoe[2] who applied it to study the optical properties of molecular aggregates; retardation effects were not included, so DeVoe's treatment was limited to aggregates that were small compared with the wavelength. The DDA, including retardation effects, was proposed in 1973 by Purcell and Pennypacker[3] who used it to study interstellar dust grains. Simply stated, the DDA is an approximation of the continuum target by a finite array of polarizable points. The points acquire dipole moments in response to the local electric field. The dipoles interact with one another via their electric fields, so the DDA is also sometimes referred to as the coupled dipole approximation.[1][4]

Nature provides the physical inspiration for the DDA - in 1909 Lorentz[5] showed that the dielectric properties of a substance could be directly related to the polarizabilities of the individual atoms of which it was composed, with a particularly simple and exact relationship, the Clausius-Mossotti relation (or Lorentz-Lorenz), when the atoms are located on a cubical lattice. We may expect that, just as a continuum representation of a solid is appropriate on length scales that are large compared with the interatomic spacing, an array of polarizable points can accurately approximate the response of a continuum target on length scales that are large compared with the interdipole separation.

For a finite array of point dipoles the scattering problem may be solved exactly, so the only approximation that is present in the DDA is the replacement of the continuum target by an array of N-point dipoles. The replacement requires specification of both the geometry (location of the dipoles) and the dipole polarizabilities. For monochromatic incident waves the self-consistent solution for the oscillating dipole moments may be found; from these the absorption and scattering cross sections are computed. If DDA solutions are obtained for two independent polarizations of the incident wave, then the complete amplitude scattering matrix can be determined. Alternatively, the DDA can be derived from volume integral equation for the electric field.[6] This highlights that the approximation of point dipoles is equivalent to that of discretizing the integral equation, and thus decreases with decreasing dipole size.

With the recognition that the polarizabilities may be tensors, the DDA can readily be applied to anisotropic materials. The extension of the DDA to treat materials with nonzero magnetic susceptibility is also straightforward, although for most applications magnetic effects are negligible.

There are several reviews of DDA method. [7][6][8][9]


Extensions

The method was improved by Draine, Flatau, and Goodman who applied fast Fourier transform to calculate convolution problem arising in the DDA which allowed to calculate scattering by large targets. They distributed discrete dipole approximation open source code DDSCAT.[7][10] There are now several DDA implementations,[6] extensions to periodic targets[11] and particles placed on or near a plane substrate.[12][13] and comparisons with exact technique were published.[14] Other aspects such as the validity criteria of the discrete dipole approximation[15] was published. The DDA was also extended to employ rectangular or cuboid dipoles [16] which is more efficient for highly oblate or prolate particles.

Numerical advances

Numerical advances include studies of iterative techniques[17], advances in preconditioning of linear system of equations arising in DDA setup[18], techniques to accelerate convolution calculations[19][20] and faster evaluations of Fast Fourier Transforms arising in DDA problem solvers. Another group of numerical advances includes implementations using graphical processing units[21].

Discrete dipole approximation codes

Most of the codes apply to arbitrary-shaped inhomogeneous nonmagnetic particles and particle systems in free space or homogeneous dielectric host medium. The calculated quantities typically include the Mueller matrices, integral cross-sections (extinction, absorption, and scattering), internal fields and angle-resolved scattered fields (phase function). There are some published comparisons of existing DDA codes.[14]

General-purpose open-source DDA codes

These codes typically use regular grids (cubical or rectangular cuboid), conjugate gradient method to solve large system of linear equations, and FFT-acceleration of the matrix-vector products which uses convolution theorem. Complexity of this approach is almost linear in number of dipoles for both time and memory.[6]

Name Authors References Language Updated Features
DDSCAT Draine and Flatau [7] Fortran 2019 (v. 7.3.3) Can also handle periodic particles and efficiently calculate near fields. Uses OpenMP acceleration.
DDscat.C++ Choliy [22] C++ 2017 (v. 7.3.1) Version of DDSCAT translated to C++ with some further improvements.
ADDA Yurkin, Hoekstra, and contributors [23][24] C 2020 (v. 1.4.0) Implements fast and rigorous consideration of a plane substrate, and allows rectangular-cuboid voxels for highly oblate or prolate particles. Can also calculate emission (decay-rate) enhancement of point emitters. Near-fields calculation is not very efficient. Uses Message Passing Interface (MPI) parallelization and can run on GPU (OpenCL).
OpenDDA McDonald [25][26] C 2009 (v. 0.4.1) Uses both OpenMP and MPI parallelization. Focuses on computational efficiency.
DDA-GPU Kieß [27] C++ 2016 Runs on GPU (OpenCL). Algorithms are partly based on ADDA.
VIE-FFT Sha [28] C/C++ 2019 Also calculates near fields and material absorption. Named differently, but the algorithms are very similar to the ones used in the mainstream DDA.
VoxScatter Groth, Polimeridis, and White [29] Matlab 2019 Uses circulant preconditioner for accelerating iterative solvers
IF-DDA Chaumet, Sentenac, and Sentenac [30] Fortran, GUI in C++ with Qt 2021 (v. 0.9.19) Idiot-friendly DDA. Uses OpenMP and HDF5. Has a separate version (IF-DDAM) for multi-layered substrate.
MPDDA Shabaninezhad, Awan, and Ramakrishna [21] Matlab 2021 (v. 1.0) Runs on GPU (using Matlab capabilities)

Specialized DDA codes

These list include codes that do not qualify for the previous section. The reasons may include the following: source code is not available, FFT acceleration is absent or reduced, the code focuses on specific applications not allowing easy calculation of standard scattering quantities.

Name Authors References Language Updated Features
DDSURF, DDSUB, DDFILM Schmehl, Nebeker, and Zhang [12][31][32] Fortran 2008 Rigorous handling of semi-infinite substrate and finite films (with arbitrary particle placement), but only 2D FFT acceleration is used.
DDMM Mackowski [33] Fortran 2002 Calculates T-matrix, which can then be used to efficiently calculate orientation-averaged scattering properties.
CDA McMahon [34] Matlab 2006
DDA-SI Loke [35] Matlab 2014 (v. 0.2) Rigorous handling of substrate, but no FFT acceleration is used.
PyDDA Dmitriev Python 2015 Reimplementation of DDA-SI
e-DDA Vaschillo and Bigelow [36] Fortran 2019 (v. 2.0) Simulates electron-energy loss spectroscopy and cathodoluminescence. Built upon DDSCAT 7.1.
DDEELS Geuquet, Guillaume and Henrard [37] Fortran 2013 (v. 2.1) Simulates electron-energy loss spectroscopy and cathodoluminescence. Handles substrate through image approximation, but no FFT acceleration is used.
T-DDA Edalatpour [38] Fortran 2015 Simulates near-field radiative heat transfer. The computational bottleneck is direct matrix inversion (no FFT acceleration is used). Uses OpenMP and MPI parallelization.
CDDA Rosales, Albella, González, Gutiérrez, and Moreno [39] 2021 Applies to chiral systems (solves coupled equations for electric and magnetic fields)
PyDScat Yibin Jiang, Abhishek Sharma and Leroy Cronin [40] Python 2023 Simulates nanostructures undergoing structural transformation with GPU acceleration.

Gallery of shapes

  • Scattering by periodic structures such as slabs, gratings, of periodic cubes placed on a surface, can be solved in the discrete dipole approximation.

  • Scattering by infinite object (such as cylinder) can be solved in the discrete dipole approximation.

See also

References

  1. ↑ 1.0 1.1 Singham, Shermila B.; Salzman, Gary C. (1986). "Evaluation of the scattering matrix of an arbitrary particle using the coupled dipole approximation". J. Chem. Phys. (AIP Publishing) 84 (5): 2658–2667. doi:10.1063/1.450338. Bibcode: 1986JChPh..84.2658S. 
  2. ↑ DeVoe, Howard (1964-07-15). "Optical Properties of Molecular Aggregates. I. Classical Model of Electronic Absorption and Refraction". J. Chem. Phys. (AIP Publishing) 41 (2): 393–400. doi:10.1063/1.1725879. Bibcode: 1964JChPh..41..393D. 
  3. ↑ E. M. Purcell; C. R. Pennypacker (1973). "Scattering and absorption of light by nonspherical dielectric grains". Astrophys. J. 186: 705. doi:10.1086/152538. Bibcode: 1973ApJ...186..705P. 
  4. ↑ Singham, Shermila Brito; Bohren, Craig F. (1987-01-01). "Light scattering by an arbitrary particle: a physical reformulation of the coupled dipole method". Opt. Lett. (The Optical Society) 12 (1): 10–12. doi:10.1364/ol.12.000010. PMID 19738776. Bibcode: 1987OptL...12...10S. 
  5. ↑ H. A. Lorentz, Theory of Electrons (Teubner, Leipzig, 1909)
  6. ↑ 6.0 6.1 6.2 6.3 M. A. Yurkin; A. G. Hoekstra (2007). "The discrete dipole approximation: an overview and recent developments". J. Quant. Spectrosc. Radiat. Transfer 106 (1–3): 558–589. doi:10.1016/j.jqsrt.2007.01.034. Bibcode: 2007JQSRT.106..558Y. https://scattering.ru/papers/Yurkin%20and%20Hoekstra%20-%202007%20-%20The%20discrete%20dipole%20approximation%20an%20overview%20and.pdf. 
  7. ↑ 7.0 7.1 7.2 Draine, B.T.; P.J. Flatau (1994). "Discrete dipole approximation for scattering calculations". J. Opt. Soc. Am. A 11 (4): 1491–1499. doi:10.1364/JOSAA.11.001491. Bibcode: 1994JOSAA..11.1491D. 
  8. ↑ Yurkin, Maxim A. (2023). "Discrete Dipole Approximation". Light, Plasmonics and Particles. Elsevier. pp. 167–198. 
  9. ↑ Chaumet, Patrick Christian (2022). "The discrete dipole approximation: A review". Mathematics (MDPI) 10 (17): 3049. 
  10. ↑ B. T. Draine; P. J. Flatau (2008). "The discrete dipole approximation for periodic targets: theory and tests". J. Opt. Soc. Am. A 25 (11): 2693–3303. doi:10.1364/JOSAA.25.002693. PMID 18978846. Bibcode: 2008JOSAA..25.2693D. 
  11. ↑ Chaumet, Patrick C.; Rahmani, Adel; Bryant, Garnett W. (2003-04-02). "Generalization of the coupled dipole method to periodic structures". Phys. Rev. B (American Physical Society (APS)) 67 (16): 165404. doi:10.1103/physrevb.67.165404. Bibcode: 2003PhRvB..67p5404C. 
  12. ↑ 12.0 12.1 Schmehl, Roland; Nebeker, Brent M.; Hirleman, E. Dan (1997-11-01). "Discrete-dipole approximation for scattering by features on surfaces by means of a two-dimensional fast Fourier transform technique". J. Opt. Soc. Am. A (The Optical Society) 14 (11): 3026–3036. doi:10.1364/josaa.14.003026. Bibcode: 1997JOSAA..14.3026S. 
  13. ↑ M. A. Yurkin; M. Huntemann (2015). "Rigorous and fast discrete dipole approximation for particles near a plane interface". The Journal of Physical Chemistry C 119 (52): 29088–29094. doi:10.1021/acs.jpcc.5b09271. https://scattering.ru/papers/Yurkin%20and%20Huntemann%20-%202015%20-%20Rigorous%20and%20fast%20discrete%20dipole%20approximation%20fo.pdf. 
  14. ↑ 14.0 14.1 Penttilä, Antti; Zubko, Evgenij; Lumme, Kari; Muinonen, Karri; Yurkin, Maxim A. et al. (2007). "Comparison between discrete dipole implementations and exact techniques". J. Quant. Spectrosc. Radiat. Transfer (Elsevier BV) 106 (1–3): 417–436. doi:10.1016/j.jqsrt.2007.01.026. Bibcode: 2007JQSRT.106..417P. 
  15. ↑ Zubko, Evgenij; Petrov, Dmitry; Grynko, Yevgen; Shkuratov, Yuriy; Okamoto, Hajime et al. (2010-03-04). "Validity criteria of the discrete dipole approximation". Appl. Opt. (The Optical Society) 49 (8): 1267–1279. doi:10.1364/ao.49.001267. PMID 20220882. Bibcode: 2010ApOpt..49.1267Z. 
  16. ↑ D. A. Smunev; P. C. Chaumet; M. A. Yurkin (2015). "Rectangular dipoles in the discrete dipole approximation". J. Quant. Spectrosc. Radiat. Transfer 156: 67–79. doi:10.1016/j.jqsrt.2015.01.019. Bibcode: 2015JQSRT.156...67S. https://scattering.ru/papers/Smunev%20et%20al.%20-%202015%20-%20Rectangular%20dipoles%20in%20the%20discrete%20dipole%20approxi.pdf. 
  17. ↑ Chaumet, Patrick C. (2024). "A comparative study of efficient iterative solvers for the discrete dipole approximation". Journal of Quantitative Spectroscopy and Radiative Transfer (Elsevier) 312. 
  18. ↑ Chaumet, Patrick C.; Maire, Guillaume; Sentenac, Anne (2023). "Accelerating the discrete dipole approximation by initializing with a scalar solution and using a circulant preconditioning". Journal of Quantitative Spectroscopy and Radiative Transfer (Elsevier) 298. 
  19. ↑ Fu, Daniel Y; Kumbong, Hermann; Nguyen, Eric; Ré, Christopher (2023). "FlashFFTConv: Efficient Convolutions for Long Sequences with Tensor Cores". arXiv preprint arXiv:2311.05908. 
  20. ↑ Bowman, John C.; Roberts, Malcolm (2011). "Efficient dealiased convolutions without padding". SIAM Journal on Scientific Computing (SIAM) 33 (1): 386–406. 
  21. ↑ 21.0 21.1 M. Shabaninezhad; M. G. Awan; G. Ramakrishna (2021). "MATLAB package for discrete dipole approximation by graphics processing unit: Fast Fourier Transform and Biconjugate Gradient". J. Quant. Spectrosc. Radiat. Transfer 262: 107501. doi:10.1016/j.jqsrt.2020.107501. Bibcode: 2021JQSRT.26207501S. 
  22. ↑ V. Y. Choliy (2013). "The discrete dipole approximation code DDscat.C++: features, limitations and plans". Adv. Astron. Space Phys. 3: 66–70. Bibcode: 2013AASP....3...66C. http://aasp.kiev.ua/index.php?text=v3-066-070-Choliy. 
  23. ↑ M. A. Yurkin; V. P. Maltsev; A. G. Hoekstra (2007). "The discrete dipole approximation for simulation of light scattering by particles much larger than the wavelength". J. Quant. Spectrosc. Radiat. Transfer 106 (1–3): 546–557. doi:10.1016/j.jqsrt.2007.01.033. Bibcode: 2007JQSRT.106..546Y. https://scattering.ru/papers/Yurkin%20et%20al.%20-%202007%20-%20The%20discrete%20dipole%20approximation%20for%20simulation%20o.pdf. 
  24. ↑ M. A. Yurkin; A. G. Hoekstra (2011). "The discrete-dipole-approximation code ADDA: capabilities and known limitations". J. Quant. Spectrosc. Radiat. Transfer 112 (13): 2234–2247. doi:10.1016/j.jqsrt.2011.01.031. Bibcode: 2011JQSRT.112.2234Y. https://scattering.ru/papers/Yurkin%20and%20Hoekstra%20-%202011%20-%20The%20discrete-dipole-approximation%20code%20ADDA%20capab.pdf. 
  25. ↑ J. McDonald; A. Golden; G. Jennings (2009). "OpenDDA: a novel high-performance computational framework for the discrete dipole approximation". Int. J. High Perf. Comp. Appl. 23 (1): 42–61. doi:10.1177/1094342008097914. Bibcode: 2009arXiv0908.0863M. 
  26. ↑ J. McDonald (2007). OpenDDA - a novel high-performance computational framework for the discrete dipole approximation (PDF) (PhD). Galway: National University of Ireland.
  27. ↑ M. Zimmermann; A. Tausendfreund; S. Patzelt; G. Goch; S. Kieß; M. Z. Shaikh; M. Gregoire; S. Simon (2012). "In-process measuring procedure for sub-100 nm structures". J. Laser Appl. 24 (4): 042010. doi:10.2351/1.4719936. Bibcode: 2012JLasA..24d2010Z. 
  28. ↑ W. E. I. Sha; W. C. H. Choy; Y. P. Chen; W. C. Chew (2011). "Optical design of organic solar cell with hybrid plasmonic system". Opt. Express 19 (17): 15908–15918. doi:10.1364/OE.19.015908. PMID 21934954. Bibcode: 2011OExpr..1915908S. 
  29. ↑ S. P. Groth; A.G. Polimeridis; J.K. White (2020). "Accelerating the discrete dipole approximation via circulant preconditioning". J. Quant. Spectrosc. Radiat. Transfer 240: 106689. doi:10.1016/j.jqsrt.2019.106689. Bibcode: 2020JQSRT.24006689G. 
  30. ↑ P. C. Chaumet; D. Sentenac; G. Maire; T. Zhang; A. Sentenac (2021). "IFDDA, an easy-to-use code for simulating the field scattered by 3D inhomogeneous objects in a stratified medium: tutorial". J. Opt. Soc. Am. A 38 (12): 1841–1852. doi:10.1364/JOSAA.432685. Bibcode: 2021JOSAA..38.1841C. 
  31. ↑ B. M. Nebeker (1998). Modeling of light scattering from features above and below surfaces using the discrete-dipole approximation (PhD). Tempe, AZ, USA: Arizona State University.
  32. ↑ E. Bae; H. Zhang; E. D. Hirleman (2008). "Application of the discrete dipole approximation for dipoles embedded in film". J. Opt. Soc. Am. A 25 (7): 1728–1736. doi:10.1364/JOSAA.25.001728. PMID 18594631. Bibcode: 2008JOSAA..25.1728B. 
  33. ↑ D. W. Mackowski (2002). "Discrete dipole moment method for calculation of the T matrix for nonspherical particles". J. Opt. Soc. Am. A 19 (5): 881–893. doi:10.1364/JOSAA.19.000881. PMID 11999964. Bibcode: 2002JOSAA..19..881M. 
  34. ↑ M. D. McMahon (2006). Effects of geometrical order on the linear and nonlinear optical properties of metal nanoparticles (PDF) (PhD). Nashville, TN, USA: Vanderbilt University.
  35. ↑ V. L. Y. Loke; P. M. Mengüç; Timo A. Nieminen (2011). "Discrete dipole approximation with surface interaction: Computational toolbox for MATLAB". J. Quant. Spectrosc. Radiat. Transfer 112 (11): 1711–1725. doi:10.1016/j.jqsrt.2011.03.012. Bibcode: 2011JQSRT.112.1711L. 
  36. ↑ N. W. Bigelow; A. Vaschillo; V. Iberi; J. P. Camden; D. J. Masiello (2012). "Characterization of the electron- and photon-driven plasmonic excitations of metal nanorods". ACS Nano 6 (8): 7497–7504. doi:10.1021/nn302980u. PMID 22849410. 
  37. ↑ N. Geuquet; L. Henrard (2010). "EELS and optical response of a noble metal nanoparticle in the frame of a discrete dipole approximation". Ultramicroscopy 110 (8): 1075–1080. doi:10.1016/j.ultramic.2010.01.013. 
  38. ↑ S. Edalatpour; M. Čuma; T. Trueax; R. Backman; M. Francoeur (2015). "Convergence analysis of the thermal discrete dipole approximation". Phys. Rev. E 91 (6): 063307. doi:10.1103/PhysRevE.91.063307. PMID 26172822. Bibcode: 2015PhRvE..91f3307E. 
  39. ↑ S. A. Rosales; P. Albella; F. González; Y. Gutierrez; F. Moreno (2021). "CDDA: extension and analysis of the discrete dipole approximation for chiral systems". Opt. Express 29 (19): 30020–30034. doi:10.1364/OE.434061. PMID 34614734. Bibcode: 2021OExpr..2930020R. 
  40. ↑ Jiang, Yibin; Sharma, Abhishek; Cronin, Leroy (2023). "An Accelerated Method for Investigating Spectral Properties of Dynamically Evolving Nanostructures". The Journal of Physical Chemistry Letters 14 (16): 3929–3938. doi:10.1021/acs.jpclett.3c00395. PMID 37078273. 



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