What is high aspect ratio?

High aspect ratio nanoparticles (HARN) are nanoparticles with a length many times that of their width. Examples of HARN may include certain types of nanotubes, nanorods, and platelets, depending on their aspect ratio. This means that, despite having the same name, two samples of CNT can vary substantially.

What is aspect ratio structure?

Aspect ratio is defined as the ratio between the length (usually the longer dimension) and the width (usually the shorter dimension) of a rectangular shape. Note that since the aspect ratio is defined as the ratio of two lengths, it does not have any units and is just a number.

Which of the following methods is the most appropriate one to prepare nanowires with high aspect ratio?

A facile and high-yield route, dropping method, has been used to synthesize Ni nanowires (NWs) with a high aspect ratio. Compared to the conventional chemical reduction method, the diameter of Ni NWs prepared by the dropping method distinctively decreased and the surface roughness was improved.

Why are high aspect ratio microstructures so complicated?

The microfabrication of high-aspect-ratio microfeatures by EMM at the intended location with 3-D tool movements in case of generation of 3-D high-aspect-ratio microstructures becomes complicated, particularly for high-depth machining because of difficulty in availability of fresh electrolyte into the extremely narrow gap in the machining zone.

Which is the middle section of the respiratory system?

The respiratory airways are the middle section and include the larynx, the trachea, the bronchi and the bronchioles. Lastly, the lower section of the respiratory tract are the lungs themselves which are comprised of the respiratory bronchioles, the alveolar ducts, the alveolar sacs and the alveoli.

What is the ratio of oxygen to carbon dioxide in the respiratory system?

Gas Exchange across the Alveoli. In the human body, oxygen is used by cells of the body’s tissues to produce ATP, while carbon dioxide is produced as a waste product. The ratio of carbon dioxide production to oxygen consumption is referred to as the respiratory quotient (RQ), which typically varies between 0.7 and 1.0.

What is the aspect ratio of a shape?

Aspect ratio. From Wikipedia, the free encyclopedia. Jump to navigation Jump to search. For other uses, see Aspect ratio (disambiguation). The aspect ratio of a geometric shape is the ratio of its sizes in different dimensions. For example, the aspect ratio of a rectangle is the ratio of its longer side to its shorter side – the ratio