| List of Contributors |
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xv | |
| 1 EMI Shielding Fundamentals |
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1 | (10) |
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1.1 Fundamentals of EMI Shielding Theory |
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1 | (2) |
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1.2 Materials for EMI Shielding |
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3 | (1) |
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1.3 Mechanism of EM Shielding Materials |
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3 | (5) |
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8 | (3) |
| 2 EM Noise and Its Impact on Human Health and Safety |
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11 | (24) |
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11 | (2) |
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2.2 Impact of Non-ionizing EMFs on Humans |
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13 | (3) |
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2.3 Overview of Most Common Sources of EMFs in the Occupational and Residential Modern Human Environment |
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16 | (3) |
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2.4 Protection Against EMFs in European and International Law |
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19 | (3) |
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2.5 Assessment of the Level of EMFs in the Workplaces |
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22 | (3) |
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2.6 Assessment of EMF Levels in Inhabited Area |
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25 | (1) |
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2.7 Assessment of the Level of EMF From Hi-tech Equipment for Personal Use |
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26 | (3) |
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2.8 Needs and Possibilities of Shielding to Reduce the Exposure to EMF |
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29 | (1) |
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30 | (1) |
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31 | (4) |
| 3 Electromagnetic Field Sensors |
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35 | (26) |
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36 | (1) |
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3.2 How are EMFs Produced? |
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36 | (2) |
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37 | (1) |
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37 | (1) |
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3.2.2.1 Low-Frequency EMF Sources |
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37 | (1) |
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3.2.2.2 High-Frequency EMF Sources |
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38 | (1) |
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3.3 Electromagnetic Field Measurements |
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38 | (18) |
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3.3.1 Magnetic Field Measurement Techniques |
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38 | (13) |
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3.3.1.1 Induction Based Sensors |
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39 | (3) |
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42 | (2) |
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3.3.1.3 SQUID Magnetometer |
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44 | (2) |
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46 | (1) |
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3.3.1.5 Magneto-Resistors |
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47 | (2) |
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3.3.1.6 Scalar Magnetometers |
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49 | (2) |
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3.3.2 Electric Field Measurements |
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51 | (4) |
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3.3.2.1 Electric Field Probes |
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51 | (2) |
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3.3.2.2 Electron Drift Instrument |
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53 | (2) |
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3.3.3 Power Density Measurements |
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55 | (1) |
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56 | (1) |
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56 | (5) |
| 4 Shielding Efficiency Measuring Methods and Systems |
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61 | (28) |
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62 | (3) |
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4.1.1 Mechanism of Shielding |
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62 | (1) |
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4.1.2 Shielding Effectiveness |
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62 | (3) |
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64 | (1) |
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64 | (1) |
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4.1.2.3 Multiple Reflection Correction Factor |
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65 | (1) |
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4.2 Calculation of Electromagnetic Shielding Effectiveness |
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65 | (4) |
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4.2.1 Calculation of SE of a Material by Using Plane Wave Theory |
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65 | (1) |
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4.2.2 Calculation of SE of a Metal Foil |
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66 | (1) |
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4.2.3 Calculation of SE for Near Field Shielding |
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67 | (1) |
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4.2.4 Calculation of SE for Shielding a Low-Frequency Magnetic Field Source |
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67 | (1) |
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4.2.5 Calculation of Shielding Effectiveness from Scattering Parameters |
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67 | (2) |
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4.3 Effect of Various Parameters on Electromagnetic Shielding Effectiveness |
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69 | (2) |
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4.4 Types of EMI Shielding Effectiveness Tests |
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71 | (2) |
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4.4.1 Open Field or Free Space Test |
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71 | (1) |
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71 | (1) |
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4.4.3 Coaxial Transmission Line Test |
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72 | (1) |
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73 | (1) |
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4.5 Shielding Effectiveness Measurement Methods and Systems |
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73 | (11) |
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4.5.1 Test Methods Using Plaque Measurements |
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74 | (8) |
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4.5.1.1 Testing Methods Based on MIL-STD-285T |
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74 | (1) |
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4.5.1.2 Modified Radiation Method for Shielding Effectiveness Testing Based on MIL-G83528 |
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75 | (1) |
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4.5.1.3 Dual Mode Stirred Chamber |
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76 | (1) |
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4.5.1.4 Apertured Transverse Electromagnetic (TEM) Cell in a Reverberating Chamber |
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77 | (1) |
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4.5.1.5 Dual TEM Cell Method |
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77 | (1) |
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78 | (1) |
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4.5.1.7 ASTM ES-7 Dual Chamber Test Fixture |
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78 | (1) |
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4.5.1.8 ASTM ES-7 Coaxial Transmission Line |
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78 | (1) |
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4.5.1.9 ASTM D 4935 Circular Coaxial Transmission Line Holder |
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79 | (2) |
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4.5.1.10 Enclosure Measurement Techniques |
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81 | (1) |
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4.5.1.11 Injection Molded Enclosure Test Method |
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81 | (1) |
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81 | (1) |
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82 | (2) |
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4.5.2.1 Free-Space Measurement Techniques in the Frequency Domain |
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82 | (1) |
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4.5.2.2 Free-Space Measurement Techniques in the Time Domain |
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83 | (1) |
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4.6 Transfer Impedance of Coaxial Cable |
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84 | (1) |
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4.6.1 Measurement of Transfer Impedance of Coaxial Cable |
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84 | (1) |
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4.7 Measurement of Transfer Impedance of Conductive Gasket |
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85 | (1) |
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86 | (1) |
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86 | (3) |
| 5 Electrical Characterization of Shielding Materials |
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89 | (20) |
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89 | (1) |
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5.2 Basics of Electrostatics |
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89 | (4) |
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5.2.1 Electrostatic Field |
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89 | (2) |
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5.2.2 Electrical Potential Energy |
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91 | (1) |
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5.2.3 Electric Potential and Electric Field Strength |
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92 | (1) |
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5.3 Electrical Conductivity |
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93 | (5) |
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5.3.1 Current and Current Density |
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93 | (1) |
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94 | (1) |
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95 | (2) |
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97 | (1) |
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5.4 Electric Fields in Materials |
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98 | (3) |
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98 | (1) |
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98 | (3) |
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5.5 Dielectric Properties |
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101 | (2) |
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5.5.1 Static Dielectric Constant |
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101 | (1) |
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5.5.2 Complex Dielectric Constant and Dielectric Losses |
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102 | (1) |
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5.6 Electromagnetic Interference Shielding Materials |
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103 | (2) |
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5.6.1 Electromagnetic Interference Shielding |
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103 | (1) |
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5.6.2 Conductive Shielding Materials |
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104 | (1) |
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5.6.3 Dielectric Shielding Materials |
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105 | (1) |
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105 | (4) |
| 6 Magnetic Field Shielding |
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109 | (38) |
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109 | (1) |
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6.2 Theories of Magnetic Field Shielding |
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110 | (6) |
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110 | (1) |
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6.2.2 Magnetic Circuit and Magnetic Reluctance |
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111 | (1) |
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6.2.3 Shielding of Magnetic Field |
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112 | (2) |
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6.2.3.1 Shielding of High Frequency Magnetic Field |
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112 | (1) |
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6.2.3.2 Shielding of Low Frequency or Static Magnetic Field |
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112 | (2) |
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6.2.4 Design of Multilayer Shielding |
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114 | (2) |
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115 | (1) |
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115 | (1) |
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6.2.5 Design of Magnetic Shielding Room |
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116 | (1) |
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6.3 Standard Shielding Materials |
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116 | (5) |
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6.3.1 Basic Magnetic Parameters |
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116 | (2) |
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6.3.2 Metallic and Ferromagnetic Materials |
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118 | (1) |
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119 | (1) |
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6.3.4 Superconducting Materials |
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120 | (1) |
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6.3.5 Amorphous and Nanocrystalline Alloys |
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120 | (1) |
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6.4 Multilayer Ferromagnetic Matrix Composite Materials |
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121 | (13) |
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6.4.1 Fe-Ni Alloy/Fe/Fe-Ni Alloy Multilayer Composite |
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122 | (6) |
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122 | (1) |
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6.4.1.2 Microstructure Characterization |
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122 | (1) |
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6.4.1.3 Geomagnetic Shielding Property: Experiment and Calculation |
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122 | (6) |
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6.4.1.4 Shielding Mechanism |
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128 | (1) |
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6.4.2 Fe-Al Alloy/Fe/Fe-Al Alloy Multilayer Composite |
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128 | (6) |
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128 | (1) |
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6.4.2.2 Microstructure Characterization |
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129 | (1) |
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6.4.2.3 Geomagnetic Shielding Property: Experiment and Calculation |
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130 | (4) |
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6.4.2.4 Shielding Mechanism |
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134 | (1) |
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6.5 Sandwich Composite/Structure Shielding System |
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134 | (9) |
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6.5.1 Fe/Fe-Al Alloy/Fe Sandwich Composite |
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135 | (6) |
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135 | (1) |
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6.5.1.2 Microstructure Characterization |
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135 | (1) |
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6.5.1.3 Magnetic Shielding Property |
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136 | (4) |
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6.5.1.4 Shielding Mechanism |
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140 | (1) |
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6.5.2 Composite/Polyester/Composite Sandwich Structure |
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141 | (6) |
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141 | (1) |
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6.5.2.2 Geomagnetic Shielding Property |
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141 | (2) |
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6.5.2.3 Shielding Mechanism |
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143 | (1) |
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143 | (1) |
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144 | (3) |
| 7 Recent Progress in Electromagnetic Absorbing Materials |
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147 | (20) |
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147 | (4) |
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7.1.1 Electromagnetic Wave Absorbing Materials |
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149 | (2) |
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7.2 Core-Shell Structured Electromagnetic Absorbing Materials |
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151 | (2) |
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7.3 CNM-Based Electromagnetic Absorbing Material |
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153 | (5) |
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7.3.1 Carbon Nanotubes/Polymer Nanocomposites for Electromagnetic Shielding |
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154 | (2) |
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7.3.2 Carbon Nanofiber Based EMI Shielding Materials |
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156 | (2) |
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7.4 Graphene Based Polymer Composites for EMI Shielding |
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158 | (2) |
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7.5 Challenges and Prospect |
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160 | (1) |
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160 | (7) |
| 8 Flexible and Transparent EMI Shielding Materials |
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167 | (10) |
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167 | (1) |
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8.2 Theory of Transparent EMI Shielding |
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168 | (1) |
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8.3 Transparent Thin Films for EMI Shielding |
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169 | (1) |
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8.4 Nanocarbon Based Flexible, Transparent EMI Shielding Materials |
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170 | (2) |
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8.5 Conducting Polymer-Based Flexible, Transparent EMI Shielding Materials |
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172 | (1) |
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8.6 Nanowire Based Flexible, Transparent EMI Shielding Materials |
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172 | (2) |
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174 | (1) |
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175 | (2) |
| 9 Polymer-Based EMI Shielding Materials |
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177 | (42) |
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178 | (3) |
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9.1.1 Need for Polymer-Based EMI Shielding Materials |
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178 | (2) |
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9.1.2 Factors Effecting EMI SE |
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180 | (1) |
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9.2 Types of Polymer Matrixes |
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181 | (3) |
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9.2.1 Insulating Polymers |
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181 | (1) |
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9.2.2 Intrinsically Conducting Polymers |
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181 | (3) |
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9.3 Polymer Composites for EMI Shielding Applications |
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184 | (19) |
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9.3.1 Carbon Based Filler Materials |
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184 | (6) |
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184 | (2) |
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186 | (1) |
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186 | (2) |
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188 | (1) |
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189 | (1) |
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190 | (9) |
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9.3.2.1 Magnetic Fillers and Carbon Materials in Insulating Polymer Matrix |
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190 | (2) |
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9.3.2.2 Magnetic Fillers with Carbon Materials in Conducting Polymer Matrix |
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192 | (2) |
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9.3.2.3 All-Magnetic Fillers in Insulating Polymer Matrix |
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194 | (4) |
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9.3.2.4 All-Magnetic Fillers in Conducting Polymer Matrix |
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198 | (1) |
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9.3.3 Metal-Based Filler Materials |
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199 | (4) |
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9.4 Structured Polymer Composites for EMI Shielding |
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203 | (9) |
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204 | (5) |
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9.4.2 Sandwiched Structures |
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209 | (1) |
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9.4.3 Segregated Structures |
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210 | (2) |
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212 | (1) |
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213 | (6) |
| 10 Textile Based Shielding Materials |
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219 | (22) |
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Julija Baltusnikaite-Guzaitiene |
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Sandra Varnaite-Zuravliova |
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219 | (1) |
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10.2 Materials for Production of EMI Textiles |
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220 | (4) |
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10.2.1 Polymers in EMI Textiles |
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221 | (1) |
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10.2.2 Conductive Coatings |
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222 | (1) |
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10.2.3 Compounding with Conductive Fillers |
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222 | (1) |
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10.2.4 Inherently (Intrinsically) Conductive Polymers (ICP) |
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223 | (1) |
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10.3 Development Trends of Textile Based Shielding Materials |
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224 | (4) |
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10.3.1 Shielding Materials Based on Conductive Fillers |
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224 | (2) |
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10.3.2 Shielding Materials Based on Fabric Formation Technology |
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226 | (1) |
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10.3.3 Shielding Materials Based on Fabric Surface Modification |
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226 | (2) |
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10.4 Methods of Shielding Effectiveness Measurement |
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228 | (4) |
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10.4.1 Coaxial Transmission Line Method |
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228 | (1) |
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10.4.2 Shielded Box Method |
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229 | (1) |
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10.4.3 Shielded Room Method |
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230 | (1) |
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10.4.4 Open Field or Free Space Method |
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230 | (2) |
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232 | (1) |
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232 | (1) |
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233 | (8) |
| 11 Graphene and CNT Based EMI Shielding Materials |
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241 | (22) |
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11.1 Introduction to Graphene and Carbon Nanotubes |
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241 | (1) |
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11.1.1 Introduction to Graphene Based Materials |
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241 | (1) |
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11.1.2 Introduction to CNT Based Materials |
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241 | (1) |
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11.2 Brief Outline of Synthesis of EMI Shielding Materials |
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242 | (3) |
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11.2.1 Brief Outline of Synthesis of Graphene Based Materials |
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242 | (2) |
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11.2.2 Brief Outline of Synthesis of CNT Based Materials |
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244 | (1) |
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11.2.2.1 Electric Arc Discharge |
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244 | (1) |
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245 | (1) |
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11.2.2.3 Chemical Vapor Deposition |
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245 | (1) |
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11.3 General Characteristic of EMI Shielding Materials |
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245 | (1) |
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11.3.1 General Characteristic of Graphene Based Materials |
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245 | (1) |
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11.3.2 General Characteristic of CNT Based Materials |
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246 | (1) |
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11.4 EMI Shielding Properties of EMI Shielding Materials |
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246 | (5) |
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11.4.1 EMI Shielding Properties of Graphene Based Materials |
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246 | (4) |
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11.4.2 EMI Shielding Properties of CNT Based Materials |
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250 | (1) |
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11.5 Overview of Structure and EMI Shielding Property Relationship and Their Applications |
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251 | (5) |
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11.5.1 Structure and EMI Shielding Property Relationship of Graphene Based Materials |
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251 | (3) |
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11.5.2 Structure and EMI Shielding Property Relationship of CNT Based Materials |
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254 | (2) |
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11.6 Future Scope of Research and Application of these Materials |
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256 | (1) |
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257 | (1) |
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257 | (6) |
| 12 Nanocomposites Based EMI Shielding Materials |
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263 | (26) |
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12.1 Nanomaterials and Nanocomposite Materials |
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263 | (1) |
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12.2 EMI Shielding Materials |
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264 | (1) |
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12.3 Electromagnetic Wave and EMI Shielding Mechanism |
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265 | (1) |
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12.4 Carbonous EMI Shielding Nanocomposites |
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266 | (14) |
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266 | (6) |
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12.4.1.1 Graphene Synthesis |
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267 | (1) |
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267 | (5) |
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272 | (5) |
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12.4.2.1 Single-Walled Carbon Nanotubes |
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273 | (1) |
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12.4.2.2 Carbon Nanotube Properties |
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274 | (1) |
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274 | (3) |
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277 | (3) |
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12.4.3.1 Vapor Grown CNFs |
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277 | (1) |
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12.4.3.2 Electrospun CNFs (ECNFs) |
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278 | (1) |
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278 | (2) |
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12.5 Other EMI Shielding Nanocomposites |
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280 | (4) |
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12.5.1 Mechanical Properties |
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281 | (1) |
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12.5.2 Corrosion Resistance |
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281 | (1) |
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12.5.3 Electrical Conductivity |
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281 | (1) |
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12.5.4 Synthesis of Metal Nanoparticles |
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282 | (1) |
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282 | (2) |
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284 | (5) |
| 13 Silver Nanowires as Shielding Materials |
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289 | (16) |
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289 | (1) |
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13.2 Scalable Synthesis of AgNWs |
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290 | (4) |
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13.3 Fabrication of Shielding Materials Based on Silver Nanowire/Polymer Conductive Composites |
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294 | (1) |
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13.4 Properties of Shielding Materials Based on Silver Nanowire/Polymer Conductive Composites |
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295 | (6) |
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13.4.1 Morphological Properties |
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295 | (2) |
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13.4.2 Electrical Properties |
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297 | (1) |
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298 | (3) |
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301 | (1) |
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302 | (3) |
| 14 Advanced Carbon Based Foam Materials for EMI Shielding |
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305 | (22) |
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305 | (1) |
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14.2 Carbon Hybrid Materials for EMI Shielding |
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306 | (16) |
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306 | (3) |
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309 | (6) |
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14.2.3 Carbon-Carbon Composites |
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315 | (1) |
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316 | (4) |
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14.2.5 Colloidal Graphite |
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320 | (2) |
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322 | (1) |
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322 | (5) |
| 15 Electromagnetic Interference Shielding Materials for Aerospace Application: A State of the Art |
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327 | (40) |
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327 | (1) |
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15.2 Radiation in Space Environment |
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328 | (2) |
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15.3 Electromagnetic Radiated Field |
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330 | (2) |
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15.3.1 Low Intensity Radiated Field |
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331 | (1) |
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15.3.2 High Intensity Radiated Field |
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332 | (1) |
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15.4 Electromagnetic Interference in Aerospace |
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332 | (4) |
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15.4.1 Classification of Electromagnetic Interference |
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333 | (1) |
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15.4.2 Effect of Electromagnetic Shielding |
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333 | (3) |
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15.5 Electromagnetic Interference Shielding Mechanism for Various Materials |
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336 | (1) |
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15.6 Requirement of Shielding Materials for Aerospace |
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337 | (1) |
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15.7 Types of Shielding Materials for Aerospace |
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338 | (16) |
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15.7.1 Metals Enclosure Based EMI Shielding Materials |
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|
338 | (6) |
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15.7.1.1 Design Consideration of Metallic Enclosure for EMI Shielding |
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|
342 | (2) |
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15.7.2 Porous Structure for EMI Shielding Materials |
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|
344 | (2) |
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15.7.3 Polymer Composites for EMI Shielding |
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346 | (25) |
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15.7.3.1 Metal Coated Polymer for EMI Shielding |
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346 | (2) |
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15.7.3.2 Conducting Polymer Based Materials for EMI Shielding |
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348 | (1) |
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15.7.3.3 Carbonanotube Based Composites for EMI Shielding |
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349 | (3) |
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15.7.3.4 Graphene Based Composites for EMI Shielding |
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352 | (2) |
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|
354 | (1) |
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|
355 | (12) |
| 16 Metamaterials as Shielding Materials |
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367 | (26) |
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|
367 | (3) |
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16.2 The Need for EMI Shielding |
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|
370 | (1) |
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16.3 Why Metamaterials for Shielding Applications? |
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|
371 | (1) |
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16.4 Metamaterials for Electromagnetic Shielding |
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|
371 | (7) |
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16.4.1 Microwave Shielding |
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|
373 | (2) |
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16.4.2 Optical and Near IR Shielding |
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|
375 | (1) |
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16.4.3 Frequency Selective Shielding |
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|
376 | (2) |
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16.5 Design and Fabrication of Metamaterials |
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|
378 | (7) |
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16.5.1 Designing Metamaterials |
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|
378 | (5) |
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16.5.2 Fabrication of Metamaterials |
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|
383 | (2) |
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385 | (1) |
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|
385 | (1) |
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|
385 | (1) |
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16.7 Challenges in Metamaterials |
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|
386 | (1) |
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|
386 | (1) |
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|
387 | (6) |
| 17 Double Percolating EMI Shielding Materials Based on Polymer Blend Nanocomposites |
|
393 | (16) |
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|
394 | (1) |
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17.2 Concept of Double Percolation |
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|
394 | (1) |
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17.3 Carbon Black and Carbon Nanofiber Based Composites |
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|
395 | (5) |
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17.3.1 Carbon Black Based Composites |
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|
395 | (5) |
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|
|
400 | (1) |
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17.4 Carbon Nanotube Based Nanocomposites |
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|
400 | (5) |
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17.5 Hybrid Filler Based Nanocomposites |
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|
405 | (2) |
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|
407 | (1) |
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|
407 | (2) |
| 18 Mechanical Performance Characterization of EMI Shielding Materials Using Optical Experimental Techniques |
|
409 | (16) |
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|
409 | (1) |
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18.2 Characterizing the In-Plane Mechanical Performance of EMI Shielding Materials |
|
|
410 | (4) |
|
18.2.1 Digital Image Correlation (DIC) |
|
|
410 | (1) |
|
|
|
411 | (2) |
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18.2.3 Photoelastic Method |
|
|
413 | (1) |
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18.3 Characterizing Out-of-Plane Mechanical Performance of EMI Shielding Materials |
|
|
414 | (1) |
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18.4 Characterizing the Fracture and Fatigue Performance of EMI Shielding Materials |
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|
415 | (5) |
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|
|
415 | (1) |
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18.4.2 Coherent Gradient Sensing (CGS) |
|
|
416 | (2) |
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18.4.3 Digital Gradient Sensing (DGS) |
|
|
418 | (2) |
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|
|
420 | (1) |
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|
|
420 | (1) |
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|
|
420 | (5) |
| Index |
|
425 | |