Short commentary

, Volume: 11( 9)

Noble Metal Nanostructures and Their Optical Properties

*Correspondence:

Lucifer Department of analytical chemistry, university of cologne ,Germany, Tel: +93314852471; E-Mail: lucy@gmail.com

Abstract

Introduction

Bulk metals are known for their high thermal and electrical properties, certain mechanical properties, and the high visibility of incident radiation. These structures are due to their crystalline structure and the presence of electrons removed from the surface — the presence of electron gas. With a decrease in the durability of metal films, new material structures can be observed. Optical structures are no different, and significant changes can be seen in the appearance of an object with the same shape but a different nanostructure. For example gold in general is known as a shiny, polished yellow stainless steel. The smooth, thin films of the same metal appear opaque, and the nanostructured surface covered with gold islands is clearly visible and the color changes from blue to red or green even depending on the size of the structure. We can therefore say that by changing the particle size or morphology of the materials that hold the chemical structure, we can find structures with very different properties. This spatial adjustment by controlling the nanostructure of the material proved to be very useful in certain systems. Nanoplasmonics is a branch of optical condensed matter science devoted to the study of optical phenomena in nanostructured metal systems. A remarkable property of such systems is their ability to concentrate the optical energy on the nanoscale due to the excitation of electromagnetic (E.M.) modes, called surface plasmons.

The old notion that the properties of an object determined entirely by its design can be considered completely counterproductive to the rapid development of nanotechnology. We can see that the properties of objects of the same shape can be changed at different values by simply controlling its nanostructure. With a decrease in the size of the structural elements, quantum effects occur as the electron energy levels form a substance strongly influenced by the confinement due to the size of the nanoparticle. This confinement leads to the solidification of the oscillation of a group of electrons, known as plasmons, having a profound effect on electrical and visual properties. The distribution nature of those plasmons means that these structures can be influenced by the media around the nanostructure. This result is a great promise for hearing apps. This also brings many other ways of tuning material structures, as we can choose different substrates and layers of metal layers, nanostructures, and nanoparticles. Plasmon is present in 2D structures such as island and nanoparticles that can be easily absorbed by incoming light and can produce significant improvements in the electromagnetic fields, which are being studied for the development of Raman spectroscopy techniques.

The opportunity to tune buildings in large quantities opens up new opportunities for the use of refurbished buildings. The nature of the above plasmon predicts the precision metal nanostructures into excellent materials for the development of modern non-labeled hearing methods based on plasmon resonance SPR and LSPR sensors. The impact of the development of the local electromagnetic field plasmons is well researched by groups focusing on the development of the SERS method. Increased regeneration of metal nanoparticles has been found to be very useful in the old methods of gas sensing. Nanostructured noble metals even show great promise in improving the efficiency of solar cells.

Acknowledgemnt

None

Conflict of Interest

None