Issue 7 (2019)

Plasmon-induced transparency effect for ultracompact on-chip devices

Plasmon-induced transparency effect for ultracompact on-chip devices

On-chip plasmon-induced transparency (PIT) possessing the unique properties of controlling light propagation states is a promising way to on-chip ultrafast optical connection networks as well as integrated optical processing chips. On-chip PIT has …

Light-emitting metasurfaces

Light-emitting metasurfaces

Photonic metasurfaces, that is, two-dimensional arrangements of designed plasmonic or dielectric resonant scatterers, have been established as a successful concept for controlling light fields at the nanoscale. While the majority of research so far …

Multiresonant plasmonics with spatial mode overlap: overview and outlook

Multiresonant plasmonics with spatial mode overlap: overview and outlook

Plasmonic nanostructures can concentrate light and enhance light-matter interactions in the subwavelength domain, which is useful for photodetection, light emission, optical biosensing, and spectroscopy. However, conventional plasmonic devices and …

Plasmonic optical tweezers based on nanostructures: fundamentals, advances and prospects

Plasmonic optical tweezers based on nanostructures: fundamentals, advances and prospects

The ability of metallic nanostructures to confine light at the sub-wavelength scale enables new perspectives and opportunities in the field of nanotechnology. Making use of this unique advantage, nano-optical trapping techniques have been developed …

Porous Ag/TiO2-Schottky-diode based plasmonic hot-electron photodetector with high detectivity and fast response

Porous Ag/TiO2-Schottky-diode based plasmonic hot-electron photodetector with high detectivity and fast response

Due to the advantages of narrow energy distribution of plasmonic hot-electrons in Ag and the high density of states in the TiO2 conduction band, an Ag/TiO2 composite is considered to be an ideal combination to construct a plasmonic hot-electron …

Designing nanophotonic structures using conditional deep convolutional generative adversarial networks

Designing nanophotonic structures using conditional deep convolutional generative adversarial networks

Data-driven design approaches based on deep learning have been introduced in nanophotonics to reduce time-consuming iterative simulations, which have been a major challenge. Here, we report the first use of conditional deep convolutional generative …

Dielectric cross-shaped-resonator-based metasurface for vortex beam generation at mid-IR and THz wavelengths

Dielectric cross-shaped-resonator-based metasurface for vortex beam generation at mid-IR and THz wavelengths

Metasurfaces are engineered thin surfaces comprising two-dimensional (2D) arrays of sub-wavelength-spaced and sub-wavelength-sized resonators. Metasurfaces can locally manipulate the amplitude, phase, and polarization of light with high spatial …

Bidirectional to unidirectional emission of fluorescence controlled by optical traveling wave antennas

Bidirectional to unidirectional emission of fluorescence controlled by optical traveling wave antennas

Tailoring the fluorescence emission of quantum emitters to a desired direction is a crucial issue to achieve high efficient photodetection and realize unique optoelectronic devices. In this study, the directional emission of quantum dots controlled …

High focusing efficiency in subdiffraction focusing metalens

High focusing efficiency in subdiffraction focusing metalens

Vector beams with phase modulation in a high numerical aperture system are able to break through the diffraction limit. However, the implementation of such a device requires a combination of several discrete bulky optical elements, increasing its …

Bio-inspired plasmonic leaf for enhanced light-matter interactions

Bio-inspired plasmonic leaf for enhanced light-matter interactions

The mathematical concept of fractals is widely applied to photonics as planar structures ranging from terahertz resonators, optical antennas, to photodetectors. Here, instead of a direct mathematical abstract, we design a plasmonic leaf with fractal …

Cost-efficient nanoscopy reveals nanoscale architecture of liver cells and platelets

Cost-efficient nanoscopy reveals nanoscale architecture of liver cells and platelets

Single-molecule localization microscopy (SMLM) provides a powerful toolkit to specifically resolve intracellular structures on the nanometer scale, even approaching resolution classically reserved for electron microscopy (EM). Although instruments …