The article by J. B. Pendry introduces the concept of negative refractive index materials as a novel approach to achieving superlenses, which can focus all Fourier components of a 2D image, including evanescent waves. Traditional lenses are limited by the wavelength of light, but negative refractive index materials can overcome this limitation. The author demonstrates that such materials can be realized in the microwave band with current technology and even at visible light frequencies using thin slabs of silver. The key advantage is that these materials can amplify evanescent waves, allowing for perfect reconstruction of images beyond the diffraction limit. The article also discusses the practical implementation of these materials, including the use of wire structures and metallic rings to achieve the desired properties. The findings suggest that negative refractive index materials could revolutionize imaging techniques, particularly in the GHz band and for nonmagnetic objects.The article by J. B. Pendry introduces the concept of negative refractive index materials as a novel approach to achieving superlenses, which can focus all Fourier components of a 2D image, including evanescent waves. Traditional lenses are limited by the wavelength of light, but negative refractive index materials can overcome this limitation. The author demonstrates that such materials can be realized in the microwave band with current technology and even at visible light frequencies using thin slabs of silver. The key advantage is that these materials can amplify evanescent waves, allowing for perfect reconstruction of images beyond the diffraction limit. The article also discusses the practical implementation of these materials, including the use of wire structures and metallic rings to achieve the desired properties. The findings suggest that negative refractive index materials could revolutionize imaging techniques, particularly in the GHz band and for nonmagnetic objects.