Macro vs Nanoscale Pyroelectric Polymers

  • Thread starter miniconfusion
  • Start date
  • Tags
    Polymers
In summary, the conversation discusses the potential increase in pyroelectric effects if a polymer sheet were to be reduced to the thickness of a single polymer chain. The speaker suggests that the overall voltage would be greater in this scenario due to the cancellation of charges in the thicker polymer sheet. They also mention recent research supporting the idea of enhanced properties in ultrathin piezoelectric polymer films.
  • #1
miniconfusion
4
0
So my question is this: Would Pyroelectric Effects become more pronounced if a polymer sheet was, instead of 1 cm thick, but rather, the thickness of a single polymer chain. For example,

say the 1 cm thick pyroelectric polymer was heated. Since it is many chains thick, it would look something like:

+++++++++++++++++++
------------------------
+++++++++++++++++++
------------------------
+++++++++++++++++++
------------------------

and all of the charges on the polymers between the top and bottom chains would cancel.

Instead, the 1 chain thick pyroelectric polymer would only look like

+++++++++++++++++++
------------------------

Am I wrong to assume that the second one would have a greater overall voltage than the first?
 
Physics news on Phys.org
  • #2
Haha, I put roughly the same idea in a grant proposal several years ago. Unfortunately it never got funded, but there is more recent work suggesting that ultrathin piezoelectric polymer films show enhanced piezoelectric properties over their bulk brethren, and pyroelectricity works on a similar mechanism.
 

What is the difference between macro and nanoscale pyroelectric polymers?

Macro and nanoscale pyroelectric polymers refer to the size of the polymer particles. Macro-scale polymers are larger in size, typically measured in millimeters, while nanoscale polymers are much smaller, typically measured in nanometers.

What are the applications of macro and nanoscale pyroelectric polymers?

Macro and nanoscale pyroelectric polymers have a variety of applications, including energy harvesting, sensors, actuators, and medical devices. These polymers can also be used in flexible electronics and as coatings for surfaces that require temperature sensitivity.

How do macro and nanoscale pyroelectric polymers generate electricity?

Pyroelectric polymers generate electricity when exposed to a change in temperature. This is due to the asymmetrical distribution of charge within the polymer particles, which creates an electric field. When the temperature changes, the electric field changes, resulting in the generation of electricity.

What are the challenges in working with macro and nanoscale pyroelectric polymers?

One of the main challenges in working with macro and nanoscale pyroelectric polymers is their sensitivity to environmental factors such as temperature, humidity, and mechanical stress. These factors can affect the electric field and therefore the performance of the polymer. Additionally, synthesizing and manipulating these polymers at the nanoscale can also be challenging.

What are some current research developments in the field of macro and nanoscale pyroelectric polymers?

Current research in this field is focused on improving the performance and stability of macro and nanoscale pyroelectric polymers. This includes developing new synthesis methods, exploring different polymer compositions, and finding ways to reduce their sensitivity to environmental factors. Researchers are also investigating new applications for these polymers, such as in energy storage and biomedical devices.

Similar threads

  • Materials and Chemical Engineering
Replies
8
Views
1K
Replies
69
Views
3K
Replies
2
Views
1K
  • Other Physics Topics
Replies
5
Views
2K
  • Other Physics Topics
Replies
4
Views
2K
Replies
46
Views
2K
  • Atomic and Condensed Matter
Replies
3
Views
3K
  • Materials and Chemical Engineering
Replies
1
Views
3K
  • Mechanical Engineering
Replies
11
Views
2K
  • Mechanical Engineering
Replies
28
Views
2K
Back
Top