본문 바로가기 주메뉴 바로가기
22대 대한민국 국회 국회정보길라잡이 국회의원검색
회원가입 로그인
HOME

정보검색

소장정보 검색

국회도서관 홈으로 정보검색 소장정보 검색

결과 내 검색

동의어 포함

고급검색

인명/단체명

저자정보 상세정보
인명/단체명을 입력하세요.

키워드

  • 대표어

  • 외국어

-

목차보기

Title Page

Abstract

Contents

Chapter 1. Introduction 12

1.1. Background 12

1.2. Motivation 16

1.3. Outline of thetis 19

Chapter 2. Background theory 21

2.1. FDTD (Finite difference time domain) 21

2.2. Super computer set-up 24

2.3. Rigorous Babinet's principle 25

2.4. Super-funneling through the bianisotropic matched zero index gap 26

2.5. Duality relation between electromagnetics and acoustics 29

2.6. Retrieving effective acoustic wave parameters from impedance tube 31

Chapter 3. Extraordinary electric and magnetic field enhancement in the nanogap and nanowire: Role of Surface Impedance in Babinet's Principle for Sub-Skin-Depth Regime 33

3.1. Introduction 33

3.2. Numerical analysis of the electric field enhancement in the nanogap 36

3.3. Analytical investigation of the perfect electric conductor nanogap and nanowire by solving rigorous scattering problem 41

3.4. Analytical and numerical investigation of the real metallic nanogap and nanowire 47

3.5. Effect of substrate 50

3.6. Discussion of role of surface impedance in the Babinet's principle for sub-skin-depth regime 54

3.7. Summary 58

3.8. Application to the switch 59

3.9. Application to the magnetic polarizer 61

Chapter 4. Decoupling of ε and μ with an anisotropic photonic meta-atom toward top-down design of metamaterials: Application to zero index super-λ funneling through a sub-λ nanoslit 69

4.1. Introduction 69

4.2. Analytical investigation of the hypothetic anisotropic meta-atom 72

4.3. Dielectric implementation of the designed hypothetic anisotropic meta-atom 76

4.4. Metallic implementation of the designed hypothetic anisotropic meta-atom 79

4.5. Application to the super funneling through the nanoslit utilizing designed matched zero index meta-atom 81

4.6. Summary 85

Chapter 5. Inverse design of an acoustic omni meta-atom for the reconfigurable, full access to wave parameter space 86

5.1. Introduction 86

5.2. Derivation of acoustic macroscopic wave parameters from the electromagnetic first-principle homogenization theory 90

5.3. Ideal meta-atom platform of decoupling acoustic parameters 93

5.4. Application to the meta-surface example utilizing designed meta-atom 103

5.5. Concept extension to the bianisotropy and energy conversion 105

5.6. Summary 113

Chapter 6. Conclusion 114

References 116

한글초록 122

List of Figures

Fig. 1.1. Wave parameters of previously reported... 13

Fig. 1.2. Microwave cloaking using cylindrical metamaterials 14

Fig. 1.3. Visible light perfect absorber made of metamaterials 14

Fig. 1.4. Super-lens based on hyperbolic metamaterials 15

Fig. 1.5. Metamaterial bottom-up design using composite... 16

Fig. 1.6. Schematics of the λ-zone (a) illustrated for light E... 17

Fig. 1.7. Microwave cloaking based on matched zero-index... 18

Fig. 2.1. Schematics of FDTD Algorithm 22

Fig. 2.2. Yee lattice for FDTD element 22

Fig. 2.3. Nonuniform orthogonal grid example 23

Fig. 2.4. The pictures of home-made CPU and GPU clusters 24

Fig. 2.5. The perfectly conducting screen (problem 1), and... 25

Fig. 2.6. The schematic of the problem where the Hz polarized...(이미지참조) 26

Fig. 2.7. The schematic of the acoustic impedance tube set-up. 32

Fig. 3.1. The FDTD analysis of fields around nanogaps. (a)... 38

Fig. 3.2. Diagram of the (a) nanogap and (b) nanowire structure... 41

Fig. 3.3. Field enhancement obtained through FDTD analysis for... 45

Fig. 3.4. (a) Magnetic field (H) enhancement for the nanowire... 47

Fig. 3.5. The schematics of nanogap and nanowire on the.... 50

Fig. 3.6. Field pattern for the nanogap and nanowire when the.... 51

Fig. 3.7. Electric and magnetic field enhancement for different.... 52

Fig. 3.8. Zoomed-in image of field enhancement obtained... 55

Fig. 3.9. Spatial distribution of the field enhancements at the exit... 56

Fig. 3.10. (a,b) Electric field and (c,d) current pattern of the... 60

Fig. 3.11. Calculated field and current distributions around a... 64

Fig. 3.12. (a) Scattering field polarizations for various hole... 66

Fig. 4.1. Physical origin of the electron induced electric (left)... 71

Fig. 4.2. (a) Schematic of the anisotropic meta-atom illuminated.... 72

Fig. 4.3. Anisotropic meta-atoms (εr ≠ εθ) of nano-pizza...(이미지참조) 77

Fig. 4.4. (a) Unit cell structure of the proposed metallic meta-... 79

Fig. 4.5. Demonstration of the decoupling μ from n₁ and also... 80

Fig. 4.6. (a) Schematic of the meta-atom coated slit structure... 81

Fig. 4.7. (a) Transmission spectra of the slit; without (green)... 83

Fig. 5.1. The schematics of meta-atom. p and q denote for... 94

Fig. 5.2. Cylindrical bending of the membrane (gray) with fixed... 96

Fig. 5.3. The portion of air (gray) area moving with membranes.... 98

Fig. 5.4. Schematics and extracted parameters for proposed... 99

Fig. 5.5. Numerically extracted effective parameters of the... 101

Fig. 5.6. The outer membrane at the (a) internal unit cells and... 102

Fig. 5.7. Experimental results for reconfigurable meta-surface... 104

Fig. 5.8. Schematics for nonzero bianisotropy of the proposed... 107

Fig. 5.9. (a) Schematic of the acoustic meta-atom. Δb/2 (b)... 108

Fig. 5.10. Numerical demonstration of wave controlling by... 109

Fig. 5.11. The structure of in analysis of asymmetric tunneling... 111

Fig. 5.12. Design and the pressure field pattern of the... 112

추천서가 (다양한 추천 자료를 만나보세요)

권호기사보기

권호기사 목록 테이블로 기사명, 저자명, 페이지, 원문, 기사목차 순으로 되어있습니다.
기사명 저자명 페이지 원문 기사목차

권호

기사명 원문보기 기사목차
닫기