Thermal-stability resonators for visible light full-spectrum perfect absorbers

Al nanostructures have unique optical properties such as widely tunable surface plasmon resonances from deep UV to NIR that can be used for label-free fluorescence enhancement and surface-enhanced 

From Aluminum Foil to Two-Dimensional Nanocrystals Using Ultrasonic Exfoliation

Coupled Maxwell and quantum-mechanical equations are used to simulate the electron dynamics in nanogaps in systems containing thousands of atoms. It will be shown that besides the carrier-envelop phase, bow-tie or gap shape, and gap size, the atomistic structure also significantly alters the electron dynamics. Atomic-scale interference fringes appear not only in the electron density but in the electron current and field enhancement as well. Electron bursts emerge from individual atoms and scatter on atoms driven by the direction of the laser. The time-dependent orbital-free density functional theory coupled to the Maxwell equations allows us to simulate physical systems approaching the realistic size and to explore the physical mechanism controlling the electron dynamics. 

Signatures of atomic structure in subfemtosecond laser-driven electron dynamics in nanogaps

Nonchemical integration of Au/Ag-based reduced graphene nanohybrid combined with 5-Fluorouracil drug to treat cancer cells.

Surface plasmon resonance (SPR) is the technique that has been used in many fields including biomedical science, optic, biosensing, photothermal plasmon and medicine. With the help of Kretschmann configuration, the setup allows to excite the electrons located around the metal which results in electron oscillation, also known as the plasmonic effect. However, SPR requires many factors in order to be activated. This paper approaches and analyzes two crucial features, the incident angle of incoming light and the effect of permittivity that different metals have in order to determine the sufficient value for the plasmon to exist. Different metals including gold, silver and iron are used with the dielectric air and water in order to figure out the most applicable metal with its resonance angle.

/pdf/calculating-resonance-angle-for-surface-plasmon-resonance-3qgbzgktos.pdf

Calculating Resonance Angle for Surface Plasmon Resonance Activation on Different Metals

Nanotechnology has been used in many biosensing and medical applications, in the form of noble metal (gold and silver) nanoparticles and nanostructured substrates However, the translational clinical and industrial applications still need improvements of the efficiency, selectivity, cost, toxicity, reproducibility, and morphological control at the nanoscale level In this review, we highlight the recent progress that has been made in the replacement of expensive gold and silver metals with the less expensive aluminum In addition to low cost, other advantages of the aluminum plasmonic nanostructures include a broad spectral range from deep UV to near IR, providing additional signal enhancement and treatment mechanisms New synergistic treatments of bacterial infections, cancer, and coronaviruses are envisioned Coupling with gain media and quantum optical effects improve the performance of the aluminum nanostructures beyond gold and silver

Quantum Leap from Gold and Silver to Aluminum Nanoplasmonics for Enhanced Biomedical Applications

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Quantum Leap from Gold and Silver to Aluminum Nanoplasmonics for Enhanced Biomedical Applications