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Efficient Band Diagram Computation for Periodic Structures Using Multiple Scattering Theory and Broadband Green's Function (MST-BBGF)
Efficient Band Diagram Computation for Periodic Structures Using Multiple Scattering Theory and Broadband Green's Function (MST-BBGF)
Detailed Information
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105242
- ISBN
- 9798291569382
- DDC
- 621.3
- 저자명
- Gao, Ruoxing.
- 서명/저자
- Efficient Band Diagram Computation for Periodic Structures Using Multiple Scattering Theory and Broadband Greens Function (MST-BBGF)
- 발행사항
- [Sl] : University of Michigan, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 119 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-03, Section: B.
- 주기사항
- Advisor: Tsang, Leung.
- 학위논문주기
- Thesis (Ph.D.)--University of Michigan, 2025.
- 초록/해제
- 요약This dissertation presents a high-efficiency computational framework for analyzing electromagnetic band diagrams in three-dimensional (3D) periodic photonic crystals. Photonic crystals-artificial structures with periodic dielectric modulation-have enabled novel control over the propagation of electromagnetic waves. Their ability to support photonic band gaps has led to widespread applications in optical communications, quantum photonics, and topological insulator design. However, computing band structures for complex 3D geometries remains a major challenge. Traditional methods such as plane wave expansion (PWE), finite element method (FEM), and finite difference time domain (FDTD) suffer from significant computational bottlenecks, particularly when applied to high-index contrast materials, irregular scatterers, or dense periodic arrays.To address these limitations, this work introduces an advanced approach that combines Multiple Scattering Theory (MST) with the Broadband Green's Function (BBGF) technique. The MST-BBGF method decomposes the global field problem into local scatterer interactions, using vector spherical harmonics and Foldy-Lax equations to formulate a compact Korringa-Kohn-Rostoker (KKR) eigenvalue problem. The BBGF technique accelerates the computation of periodic Green's functions via imaginary wavenumber deformation, allowing for fast and accurate broadband evaluations. Together, these techniques form a highly scalable and efficient solver that circumvents the need for full-domain volumetric meshing.A key innovation in this dissertation is the introduction of a general T-matrix extraction method that enables modular modeling of arbitrarily shaped scatterers. Unlike traditional methods that rely on analytic forms (e.g., Mie theory) or volume integration, this work proposes the use of far-field scattering amplitudes-obtained through full-wave numerical solvers such as FEKO or HFSS-to extract a single-scatterer T-matrix. Once computed, this T-matrix can be reused across all unit cells, regardless of the periodic configuration, substantially improving computational efficiency and enabling rapid parametric sweeps across geometries and frequencies. The developed MST-BBGF framework is rigorously validated through both analytical and numerical benchmarks. Comparisons against FEM simulations demonstrate that the proposed method achieves results with excellent agreement, while reducing simulation time and memory requirements by two to three orders of magnitude. Analytical validation using spherical dielectric scatterers confirms that the computed band diagrams match theoretical predictions to within negligible errors. Furthermore, the framework supports the flexible modeling of both sparse and dense periodic lattices, accommodating structures with strong near-field coupling and high-order multipole interactions.To demonstrate the full capability of the method, the dissertation applies the MST-BBGF solver to several complex and practically relevant structures. These include periodic arrays of two-layer triangular prism scatterers and core-shell resonators, where the T-matrix must account for multiple internal layers and asymmetry. The method is shown to capture subtle band shifts caused by high-order scattering, and accurately predict the emergence of complete band gaps. In the context of topological photonics, the framework is applied to systems exhibiting band inversion and edge state formation, highlighting its robustness in handling symmetry-breaking configurations.Overall, this dissertation offers a powerful and generalizable computational tool for 3D photonic crystal analysis. The MST-BBGF method combines physics-based modeling, mathematical efficiency, and numerical versatility, making it well suited for current and next-generation photonic design. Its modular structure and rapid convergence make it particularly valuable in the context of design optimization, inverse photonic design, and machine-learning-assisted material discovery. The method opens new possibilities for analyzing photonic crystals, topological insulators, metamaterials, and other periodic electromagnetic systems that were previously out of reach due to computational limitations.
- 일반주제명
- Electrical engineering
- 일반주제명
- Computer engineering
- 일반주제명
- Materials science
- 일반주제명
- Theoretical physics
- 키워드
- Band diagram
- 기타저자
- University of Michigan Electrical and Computer Engineering
- 기본자료저록
- Dissertations Abstracts International. 87-03B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
008260126s2025 us c eng d■001000017359963
■00520260202105242
■006m o d
■007cr#unu||||||||
■020 ▼a9798291569382
■035 ▼a(MiAaPQ)AAI32272014
■035 ▼a(MiAaPQ)umichrackham006452
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a621.3
■1001 ▼aGao, Ruoxing.
■24510▼aEfficient Band Diagram Computation for Periodic Structures Using Multiple Scattering Theory and Broadband Green's Function (MST-BBGF)
■260 ▼a[Sl]▼bUniversity of Michigan▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a119 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-03, Section: B.
■500 ▼aAdvisor: Tsang, Leung.
■5021 ▼aThesis (Ph.D.)--University of Michigan, 2025.
■520 ▼aThis dissertation presents a high-efficiency computational framework for analyzing electromagnetic band diagrams in three-dimensional (3D) periodic photonic crystals. Photonic crystals-artificial structures with periodic dielectric modulation-have enabled novel control over the propagation of electromagnetic waves. Their ability to support photonic band gaps has led to widespread applications in optical communications, quantum photonics, and topological insulator design. However, computing band structures for complex 3D geometries remains a major challenge. Traditional methods such as plane wave expansion (PWE), finite element method (FEM), and finite difference time domain (FDTD) suffer from significant computational bottlenecks, particularly when applied to high-index contrast materials, irregular scatterers, or dense periodic arrays.To address these limitations, this work introduces an advanced approach that combines Multiple Scattering Theory (MST) with the Broadband Green's Function (BBGF) technique. The MST-BBGF method decomposes the global field problem into local scatterer interactions, using vector spherical harmonics and Foldy-Lax equations to formulate a compact Korringa-Kohn-Rostoker (KKR) eigenvalue problem. The BBGF technique accelerates the computation of periodic Green's functions via imaginary wavenumber deformation, allowing for fast and accurate broadband evaluations. Together, these techniques form a highly scalable and efficient solver that circumvents the need for full-domain volumetric meshing.A key innovation in this dissertation is the introduction of a general T-matrix extraction method that enables modular modeling of arbitrarily shaped scatterers. Unlike traditional methods that rely on analytic forms (e.g., Mie theory) or volume integration, this work proposes the use of far-field scattering amplitudes-obtained through full-wave numerical solvers such as FEKO or HFSS-to extract a single-scatterer T-matrix. Once computed, this T-matrix can be reused across all unit cells, regardless of the periodic configuration, substantially improving computational efficiency and enabling rapid parametric sweeps across geometries and frequencies. The developed MST-BBGF framework is rigorously validated through both analytical and numerical benchmarks. Comparisons against FEM simulations demonstrate that the proposed method achieves results with excellent agreement, while reducing simulation time and memory requirements by two to three orders of magnitude. Analytical validation using spherical dielectric scatterers confirms that the computed band diagrams match theoretical predictions to within negligible errors. Furthermore, the framework supports the flexible modeling of both sparse and dense periodic lattices, accommodating structures with strong near-field coupling and high-order multipole interactions.To demonstrate the full capability of the method, the dissertation applies the MST-BBGF solver to several complex and practically relevant structures. These include periodic arrays of two-layer triangular prism scatterers and core-shell resonators, where the T-matrix must account for multiple internal layers and asymmetry. The method is shown to capture subtle band shifts caused by high-order scattering, and accurately predict the emergence of complete band gaps. In the context of topological photonics, the framework is applied to systems exhibiting band inversion and edge state formation, highlighting its robustness in handling symmetry-breaking configurations.Overall, this dissertation offers a powerful and generalizable computational tool for 3D photonic crystal analysis. The MST-BBGF method combines physics-based modeling, mathematical efficiency, and numerical versatility, making it well suited for current and next-generation photonic design. Its modular structure and rapid convergence make it particularly valuable in the context of design optimization, inverse photonic design, and machine-learning-assisted material discovery. The method opens new possibilities for analyzing photonic crystals, topological insulators, metamaterials, and other periodic electromagnetic systems that were previously out of reach due to computational limitations.
■590 ▼aSchool code: 0127.
■650 4▼aElectrical engineering
■650 4▼aComputer engineering
■650 4▼aMaterials science
■650 4▼aTheoretical physics
■653 ▼aPeriodic structures
■653 ▼aBand diagram
■653 ▼aMultiple Scattering Theory
■653 ▼aPhotonic crystals
■653 ▼aFinite element method
■690 ▼a0544
■690 ▼a0464
■690 ▼a0753
■690 ▼a0794
■71020▼aUniversity of Michigan▼bElectrical and Computer Engineering.
■7730 ▼tDissertations Abstracts International▼g87-03B.
■790 ▼a0127
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17359963▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
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