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词汇 metamaterial
释义

Definition of metamaterial in English:

metamaterial

noun ˈmɛtəməˌtɪərɪəlˈmedəməˌtirēəl
Physics
  • A synthetic composite material with a structure such that it exhibits properties not usually found in natural materials, especially a negative refractive index.

    the team began making these metamaterials and demonstrated several that scattered electromagnetic waves unlike any known materials
    Example sentencesExamples
    • So far researchers have only developed metamaterials that divert radar and microwaves - rather than light waves, which are the key to invisibility.
    • The team used two different wedge samples so that waves would be incident on the metamaterial at two different angles.
    • Left-handed materials - such as this "metamaterial" for microwaves - are reported to bend light in the opposite direction from normal materials, a property that might lead to a "perfect" lens.
    • But the negative-index metamaterials that have been demonstrated are far more dispersive than typical materials.
    • Such a small index does not mean the speed of light exceeds that of a vacuum: this rule of thumb breaks down in metamaterials.

Definition of metamaterial in US English:

metamaterial

nounˈmedəməˌtirēəl
Physics
  • A synthetic composite material with a structure such that it exhibits properties not usually found in natural materials, especially a negative refractive index.

    the team began making these metamaterials and demonstrated several that scattered electromagnetic waves unlike any known materials
    Example sentencesExamples
    • The team used two different wedge samples so that waves would be incident on the metamaterial at two different angles.
    • Such a small index does not mean the speed of light exceeds that of a vacuum: this rule of thumb breaks down in metamaterials.
    • But the negative-index metamaterials that have been demonstrated are far more dispersive than typical materials.
    • So far researchers have only developed metamaterials that divert radar and microwaves - rather than light waves, which are the key to invisibility.
    • Left-handed materials - such as this "metamaterial" for microwaves - are reported to bend light in the opposite direction from normal materials, a property that might lead to a "perfect" lens.
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