Phys.org  October 18, 2023 Imaging with resolutions much below the wavelength λ remains challenging at lower frequencies, where exponentially decaying evanescent waves are generally measured using a tip or antenna close to an object. Such approaches are often problematic because probes can perturb the near-field itself. Researchers in Australia have demonstrated that information encoded in evanescent waves can be probed further than previously thought, by reconstructing truthful images of the near-field through selective amplification of evanescent waves like a virtual superlens that images the near field without perturbing it. They quantified trade-offs between noise and measurement distance, experimentally demonstrated reconstruction […]