Dear Immanuel Paulraj,

There is no clear definition, but they are 1D nanostructures and normally one can differentiate between Nanowire and Nanorod is in terms of Aspect Ratio (length-to-width ratio).

Nanowire :

In Nanowires aspect ratio is around 1000.

Nanorod :

In Nanorod aspect ratio can vary between 2 to 50.

I hope I have answered your question.

With Best Wishes,

Samir G. Pandya

This page can be helpful: https://www.quora.com/How-can-we-differentiate-between-nanotubes-nanorods-nanowires-and-nanoparticles

Dear Immanuel Paulraj,

There is no clear definition, but they are 1D nanostructures and normally one can differentiate between Nanowire and Nanorod is in terms of Aspect Ratio (length-to-width ratio).

Nanowire :

In Nanowires aspect ratio is around 1000.

Nanorod :

In Nanorod aspect ratio can vary between 2 to 50.

I hope I have answered your question.

With Best Wishes,

Samir G. Pandya

Nanowires are one dimensional nanostructures which have diameters of the order of tens of nanometers, with unconstrained length scales. The ratio between their diameters to their lengths may be less than 10-3. While for nanorods, that ratio here is almost ranged between 0.1 and 0.3 only, as well as they are also one dimensional nanostructural materials. More specifically, an aspect ratio below 10 corresponds to nanorods, while an aspect ratio above 10 corresponds to a nanowire. Also the nanowires have some physical flexibility.

Both are confined in two directions but simply says, the aspect ratio is used to determine the nano rods or nano wire.

Thank you

Thank you

different between Nanowire and Nanorod is in terms of Aspect Ratio length-to-width ratio.

Thanks

Dear Raj,

Better you can read more books/literature on nanomaterials.

I think you can get some idea.

Wish you good luck.

aspect ratio and diameter should be considered at the same time.

Nanowires and nanorods are very similar, and in most synthesis produced together. The difference lies in the length to diameter ratio of the two. Nanorods are thicker in comparison to nanowires.

Nanowires have diameters which are much smaller than their lengths. They can be considered one dimensional structures. Nanorods have much shorter length than nanowires and their diameters are greater than the wires. So, they can not be always considered one dimensional structures as the nanowires.

Best wishes. Both are cylindrical structures.

I already successfully synthesized the gold nanorods with AR (L:D) between 2.5 and 3.5; by CTAB-mediated method, , but it is really unstable after a day of reaction time. In order to create the nanowire with the similar method, what should I improve? Thanks Abdelhalim abdelnaby Zekry Anupma Thakur

Dear Immanuel Paulraj for more information about the difference between nanowires and nanorods please see this useful article entitled

Nanowires and nanorods

https://www.engr.colostate.edu/ECE581/fall07/ece505%20notes%202.pdf

The following article about ZnO nanowires and nanorods is freely available as public full text on RG:

A Comparison of ZnO Nanowires and Nanorods Grown Using MOCVD and Hydrothermal Processes

Article A Comparison of ZnO Nanowires and Nanorods Grown Using MOCVD...

Dear Peter Trinh ,

welcome,

I wonder how a solid material as the your Gold nanowire could be unstable.

Can you explain more how how you build your nanowires and how could they destructed after long time?

This means that after certain time a reverse reaction begins to dissolve the nanorods. So, either you have to take out the rods out of the solution and refresh it which means that you increase the concentration of the materials bearing the gold atoms and then bring them again to complete the deposition process.

or you can feed you solution with the source material of the gold atoms.

Best wishes

In nanotechnology, nanorods are one morphology of nanoscale objects. Each of their dimensions range from 1–100 nm. They may be synthesized from metals or semiconducting materials. Standard aspect ratios (length divided by width) are 3-5. Nanorods are produced by direct chemical synthesis. A combination of ligands act as shape control agents and bond to different facets of the nanorod with different strengths. This allows different faces of the nanorod to grow at different rates, producing an elongated object.

Whereas, A nanowire is a nanostructure, with the diameter of the order of a nanometer (10−9meters). It can also be defined as the ratio of the length to width being greater than 1000. Alternatively, nanowires can be defined as structures that have a thickness or diameter constrained to tens of nanometers or less and an unconstrained length. At these scales, quantum mechanical effects are important — which coined the term "quantum wires". Many different types of nanowires exist, including superconducting (e.g. YBCO), metallic (e.g. Ni, Pt, Au).

Thank you

Dear Dr. @Abdelhalim Zekry, Thanks you for actively responding my question. In general, I created the growth solution by combining HAuCl4 and AgCl along with CTAB, in which then was inserted seed solution, synthesized the solution containing gold nanorods... Thank you.