Wave imaging techniques such as optical microscopy play an important role in our understanding of the microscopic world. Because of Abbe's diffraction limit, their resolution is usually limited by half the wavelength of the radiating waves. In this talk, we use examples of Helmholtz resonators, air-bubbles, plasmonic particles and subwavelength holes to demonstrate how subwavelength resonances can be used to break the diffraction limit to achieve superresolution imaging. Theories are also developed to explain the mechanism behind.
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