Metallic nanogaps with metal–metal separations of less than 10 nm have many applications
in nanoscale photonics and electronics. However, their fabrication remains a considerable …

Sub‐5 nm metal nanogaps have attracted widespread attention in physics, chemistry,
material sciences, and biology due to their physical properties, including great plasmon …

We present optical trapping with a 10 nm gap resonant coaxial nanoaperture in a gold film.
Large arrays of 600 resonant plasmonic coaxial nanoaperture traps are produced on a …

Subwavelength electromagnetic field localization has been central to photonic research in
the last decade, allowing us to enhance sensing capabilities as well as increase the …

We present a wafer-scale array of resonant coaxial nanoapertures as a practical platform for
surface-enhanced infrared absorption spectroscopy (SEIRA). Coaxial nanoapertures with …

We experimentally show that terahertz (THz) waves confined in sub-10 nm metallic gaps can
detect refractive index changes caused by only a 1 nm thick (∼ λ/106) dielectric overlayer …

We demonstrate nanogap electrodes for rapid, parallel, and ultralow-power trapping of
nanoparticles. Our device pushes the limit of dielectrophoresis by shrinking the separation …

The refractive index is the fundamental property of all optical materials and dictates Snell's
law, propagation speed, wavelength, diffraction, energy density, absorption and emission of …

We present a novel plasmonic antenna structure, a split-wedge antenna, created by splitting
an ultrasharp metallic wedge with a nanogap perpendicular to its apex. The nanogap can …

Optical field can be concentrated into deep‐subwavelength volumes and realize significant
localized‐field enhancement (so called “hot spot”) using metallic nanostructures. It is …