The optical transmission and electric field distribution of plasmonic nanostructures dictate their performance in nano-optics and nano-biosensors. Here, we consider the use of hollow, five-pointed, star-shaped nanostructures made of Al, Ag, Au or Cu. We use simulations based on finite-difference time-domain and the discrete dipole approximation to identify the strongest plasmon resonan‐ ces in ...

HD 169142 is part of the class (pre-)transitional protoplanetary disks showing multiple carbon nanodust spectroscopic signatures (aromatic, aliphatic) dominating infrared spectrum. Precise constraints on spatial distribution and properties carbonaceous dust particles are essential to understanding physics disk. The disk seen almost face-on thus offers a unique opportunity study radial evolution...

Transition metal dichalcogenides (TMDs) like molybdenum disulfide (MoS2) have unique optical properties such as strong luminescence and a tunable bandgap. However, the small interaction distance due to atomically thin nature of these materials is limitation for applications. In this study, significant enhancement A- B-exciton emission in MoS2 flakes through coupling with plasmonic Au nano-pyram...

Bismuth oxyiodide has attracted strong interest as a nano-engineered material for high-performance electrodes in photoelectrochemical (PEC) cells. Herein, we demonstrate the visible-light-sensitive PEC photocathodes based on nano-engineered bismuth oxyiodide (BiOI). The photocathodes are comprised of plasmonic Au nanoparticles (NPs) on hydrogen-reduced BiOI (H-BiOI) nanoflake arrays. The BiOI-b...

BACKGROUND The sensitivity and selectivity of traditional methods limits ultramicro detection of proteins. Bio-barcode amplification detection methods based on nanotechnology enables ultramicro detection of protein. However, bio-barcode amplification detection depends on the oligonucleotides being fixed on a glass chip. It also requires specialized equipment, which limits its application. We in...

Using a DFT-based genetic algorithm (GA) approach, we have determined the most stable structure and stoichiometry of a 309-atom icosahedral AuCu nanoalloy, for potential use as an electrocatalyst for CO2 reduction. The identified core-shell nano-particle consists of a copper core interspersed with gold atoms having only copper neighbors and a gold surface with a few copper atoms in the terraces...

The phase diagrams of continuous binary nanoalloys are important in providing guidance for material designs and industrial applications. However, experimental determination of the nano-phase diagram is scarce since calorimetric measurements remain quite challenging at the nanoscale. Based on the size-dependent cohesive energy model, we developed a unified nano-thermodynamic model to investigate...

A unique bimetallic, nano platinum (Pt) with nano gold (Au) on nafion (NF) incorporated with functionalized multiwall carbon nanotubes (f-MWCNTs) composite film (f-MWCNTs-NF-PtAu) was developed by the potentiostatic method. The composite film exhibits promising efficient catalytic activity towards the oxidation of mixture of biochemical compounds and simultaneous measurement of ascorbate anion,...