Photo-polymerisation of nanostructures

  • Thread starter Luppe
  • Start date
In summary, the conversation discusses the use of photo induced polymerisation in creating nanoparticles and the possibility of creating smaller features using two-photon absorption. The wavelength of light used for this process is typically in the UV range, allowing for the creation of features as small as 300nm. However, two-photon absorption allows for even smaller features to be created by utilizing nonlinear optical absorption. Any input or suggestions on this topic would be appreciated.
  • #1
Luppe
1
0
Hi, I'm currently working on an undergraduate project concerning the optical fabrication of nanoparticles and have come across a problem.

One of the methods that we're charged with investigating is photo induced polymerisation. The wavelengths of light used to induce these reactions is typically in the UV range. If I was to induce the reaction using a beam with a wavelength 300nm, would the smallest feature size I'd be able to create also be limited at 300nm, or is there a way of creating smaller features perhaps using two photon absorption or other methods?

Any input, help, ideas or suggestions would be welcome, thanks.
 
Physics news on Phys.org
  • #2
Yes, it is possible to create smaller features using two-photon absorption. This method is based on the phenomenon of nonlinear optical absorption, which allows for the absorption of photons of a certain wavelength in pairs, rather than one at a time. The absorbed energy is then converted into heat, which can be used to induce chemical reactions or cause physical changes in the material. This means that it is possible to create much smaller features than would otherwise be possible with a single-photon absorption process.
 

What is photo-polymerisation of nanostructures?

Photo-polymerisation of nanostructures is a process in which light is used to trigger the formation of polymer chains on a nanoscale level. This allows for precise control over the size and shape of the resulting nanostructures.

What are the applications of photo-polymerisation of nanostructures?

Photo-polymerisation of nanostructures has a wide range of applications, including in the production of nanosensors, drug delivery systems, and nanoelectronics. It is also used in the creation of 3D structures for tissue engineering and microfluidics.

What types of light can be used for photo-polymerisation of nanostructures?

The most commonly used light sources for photo-polymerisation of nanostructures are ultraviolet (UV) and visible light. However, other types of light such as infrared and X-rays have also been used in certain applications.

What factors affect the efficiency of photo-polymerisation of nanostructures?

The efficiency of photo-polymerisation of nanostructures can be affected by several factors, including the type and intensity of light used, the properties of the starting materials, and the presence of additives or catalysts. Environmental factors such as temperature and humidity can also play a role.

What are the advantages of photo-polymerisation of nanostructures?

Photo-polymerisation of nanostructures offers several advantages over traditional methods of creating nanostructures. These include precise control over size and shape, high resolution, and the ability to create complex 3D structures. It is also a relatively fast and cost-effective process compared to other nanofabrication techniques.

Similar threads

  • Mechanical Engineering
Replies
12
Views
4K
Replies
1
Views
932
Replies
8
Views
2K
  • Materials and Chemical Engineering
Replies
1
Views
3K
Replies
14
Views
2K
Replies
1
Views
2K
  • Classical Physics
Replies
9
Views
6K
  • Quantum Interpretations and Foundations
4
Replies
135
Views
8K
  • Other Physics Topics
Replies
0
Views
682
Back
Top