Inside a liquid solution, oriented attachment (OA) is now recognized to be as important pathway crystal growth other, more conventional mechanisms. However, the driving force that controls occurrence of OA still poorly understood. Here, using in-situ cell transmission electron microscopy, we demonstrate ligand-controlled citrate-stabilized gold nanoparticles at atomic resolution. Our data reveal particle pairs rotate randomly separation distance greater than twice layer thickness adsorbed...

Abstract One of the main challenges for highly sensitive surface-enhanced Raman scattering (SERS) detection is noise interference fluorescence signals arising from analyte molecules. Here we used three types gold nanostars (GNSs) SERS probes treated by different surface modification methods to reveal simultaneously existed enhancement and inhibiting behaviors during process. As distance between metal nanostructures molecules can be well controlled these methods, demonstrated that either...

Optical gyroscopes with high sensitivity are important rotation sensors for inertial navigation systems. Here, we present the concept of integrated resonant optical gyroscope constructed by active long-range surface plasmon-polariton (LRSPP) waveguide resonator. In this gyroscope, LRSPP doped gain medium is pumped to compensate propagation loss, which has lower pump noise than that conventional waveguide. Peculiar properties single-polarization have been found significantly reduce...

Introduction Distal radius fractures (DRF) are one of the most common fractures, accounting for approximately 20% all fractures. DRF is frequently associated with distal radioulnar joint (DRUJ) dislocation, which may be initially overlooked due to subtle symptoms and imaging findings. This can lead misdiagnosis suboptimal treatment. Patient concerns An elderly female patient presented a fracture. Early clinical evaluations failed identify co-existing DRUJ dislocation. Diagnosis The...

Plasmonic absorbers with broadband light confinement and high photothermic harnessing efficiency are of current interest in various fields industrialization prospects, such as solar energy harvesting, conversion antireflection. Here we present simple cost-effective chemical synthesis electrophoretic deposition methods for the fabrication large-scale plasmonic absorber layers constructed by silver nanoplate aggregations (SNPAs) unique morphology. Using numerical simulation experiments...

Propagation of surface plasmon polaritons (SPPs) along the interface between a metal and dielectric has attracted significant attention due to its unique optical properties, which inspired plethora fascinating applications in photonics optoelectronics. However, SPPs suffer from large attenuation because ohmic losses layer. It become main bottom‐neck problem for development high performance plasmonic devices. This limitation can be overcome by providing material adjacent with gain. In this...

Ink synthesis, room-temperature post-processing and applications for flexible 3D paper electronics.

The tunable and amazing properties of plasmonic nanostructures have received significant attentions in the fields solar energy conversion. Plasmonic provide pathways to directly convert into electric by hot-carrier generation. They can also serve as economical electrodes for high-efficient carrier collection. Both promising potential manufacturing new generation cells. Here, we review recent advances electronic designs photovoltaic devices specially focus on architectures electrode...

We numerically investigate the light absorption enhancement of organic photovoltaic cells by embedding Ag nanoparticles and nanochains within active layer using a finite element method. analyze mechanism systematically study influence factors such as size period silver nanoparticles. The result shows localized surface plasmon resonance particles has significant on absorption. Under AM1.5 illumination condition, relative with factor 107.1% is observed for diameter 30 nm 200 nm. In addition,...

The characteristics of gap plasmon formed by nanoparticle-on-mirror (NPOM) structure composed metal nanoparticles (MNP) and thin films have aroused the interest various optoelectronic devices. resonant spectrum obtained internal coupling effect can be flexibly controlled polarization incident light thickness dielectric layer between MNP films. We theoretically studied resonance spectra polarization-dependent gold ellipsoidal (GENP) in region NPOM structures. GENP are separated a with...

Gold nano-star particles (GNS) have broad application prospects in Raman enhancement, photovoltaic, and catalysis fields because of the hot spot effect their tip structure. However, metal nanoparticles will accumulate heat during applications high-power laser-focused irradiation, which may lead to morphological degradation nanoparticles. In this paper, we studied annealing temperature on surface structure GNS. Firstly, GNS with multi-tip were synthesised by two-step method, thin films...

Synthesis and <italic>in situ</italic> optical characteristic investigation of ultrathin silver nanowires with ∼100% transparency in the whole visible range.

Hyperlens consisted by period plasmonic metamaterials is an interesting technology for the optical imaging of arbitrary objects beyond diffraction limit in far field, which has great potential applications nanophotonics. However, functionality previously presented hyperlens limited to image two-dimensional (2-D) and work at a certain wavelength due dispersion metal, dramatically impose restrictions on its practical application. In this paper, we proposed theoretically demonstrated...

In this paper, a novel gold nanostar (NS)@SiO2@CdSe/ZnS quantum dots (QDs) complex with plasmon-enhanced fluorescence synthesized using step-by-step surface linkage method was presented. The NS by the seed growth method. apexes structure has hot-spot effect due to strong electric field distributed at its sharp apexes, which leads plasmon resonance enhancement. Because distance between QDs and metal nanostructures can be precisely controlled method, relationship enhancement revealed....

Here, a plasmon-enhanced random laser was achieved by incorporating gold nanostars (NS) into disordered polymer and CdSe/ZnS quantum dots (QDs) gain medium films, in which the surface plasmon resonance of NS can greatly enhance scattering cross section bring large volume. The distribution film formed laser-mode resonator. Under single-pulse pumping, center NS-based exhibits enhanced performance lasing threshold 0.8 mJ/cm2 full width as narrow 6 nm at half maximum. By utilizing local...

The present study is related to a process development for producing high purity fused magnesia. A newly designed 3000 kVA electric arc furnace used in the field experiment. resistance characteristic of magnesia analyzed and effect electrode diameters depth buried molten on melting heat conversion are discussed detail. It shows that, new furnace, 350~450 mm diameter ~300mm suitable.

We show high-purity synthesis, structural engineering and<italic>in situ</italic>optical investigation of a 2D plasmonic platform using huge silver nanoplates.

With the rapid development of nanotechnology, surface plasmon properties metal nanostructures have become focus research. In this paper, a multi-tip gold nanostars (GNSs) structure is designed theoretically, and its are simulated by using finite element method (FEM), which practical versatile. Compared with traditional spherical triangular plate particles, results show that tip GNSs has stronger hot spots effect, resulting in greater local field enhancement properties. The relationship...

The growth of a low-temperature polycrystalline silicon (LTPS) thin film on flexible polyethylene terephthalate (PET) substrate under the assistance helium plasma has been examined in detail this study. By utilizing enhanced chemical vapor deposition method, LTPS films are directly deposited PET at relatively low temperature (80 °C), and variations morphology, structure, electrical property samples with He flow systematically characterized by performing series tests. results show that purely...

The effects of corner shape silver (Ag) nanocubes (NCs) on optical absorptions organic solar cells (OSCs) are theoretically investigated by finite element method (FEM) calculations. absorption sun light in the active layer is calculated. Significant enhancements have been demonstrated metallic region with different shapes Ag NCs, among them radius ( R ) zero result best performance up to 55% enhancement respect bare OSCs. origins increased believed be huge electric field and scattering upon...