The diffraction limit is a fundamental barrier in optical science and engineering. It limits the
minimum feature size in surface patterning technologies, such as lithography and laser …

Signal conversion plays an important role in many applications such as communication,
sensing, and imaging. Realizing signal conversion between optical and microwave …

Strong focusing on diffraction-limited spots is essential for many photonic applications and is
particularly relevant for optical trapping; however, all currently used approaches fail to …

Optical microscope is one of the most widely used imaging tools for its great flexibility,
reliable design, and low cost. Optical microsphere nanoscope (OMN) is invented as a …

A novel rectangular patch antenna based on multiwall carbon nanotubes has been
designed and developed for assisting the initial detection of COVID-19-affected lungs. Due …

Dielectric metasurfaces are crucial for enhancing optical nonlinear generation, particularly
membrane metasurfaces with multipolar resonances and compact size. Investigating silicon …

In recent years, peculiar physical phenomena enabled by non-Hermitian systems, especially
the parity-time (PT)-symmetric systems, have drawn tremendous research interests …

Multispectral imaging plays an essential role in applications from biomedical imaging to
remote sensing since it records rich spectral and spatial information. Nevertheless …

Traditional long-wave infrared polarimetry usually relies on complex optical setups, making
it challenging to meet the increasing demand for system miniaturization. To address this …

This paper explores time‐modulated metasurface‐assisted waveguide setups for the unique
and accurate permittivity and permeability extraction of lossy dispersive samples with phase …