Dielectric Constant: Understanding Quantum Optics in Ultra Thin Semiconductors

AI Thread Summary
The discussion centers on the dielectric constant and its significance in quantum optics, particularly in ultra-thin semiconductors. The dielectric constant is a measure of a material's ability to store electrical energy in an electric field, which is crucial for understanding semiconductor behavior. The provided resources, including a Wikipedia article and a link to dielectric constants, aim to clarify this concept. Understanding the dielectric constant is essential for grasping the implications of quantum optics in advanced semiconductor applications. This foundational knowledge is vital for further exploration in the field.
condensedmatter
Messages
2
Reaction score
0
One of my professors sent me an article on quantum optics in ultra thin semiconductors. In various graphs and text, the dielectric constant is discussed, and I have no idea what this is.
 
Physics news on Phys.org
* Dielectric constant article at Wikipedia.
* http://www.clippercontrols.com/info/dielectric_constants.html

Hope this helps.

- Bryan
 
Last edited by a moderator:
This is from Griffiths' Electrodynamics, 3rd edition, page 352. I am trying to calculate the divergence of the Maxwell stress tensor. The tensor is given as ##T_{ij} =\epsilon_0 (E_iE_j-\frac 1 2 \delta_{ij} E^2)+\frac 1 {\mu_0}(B_iB_j-\frac 1 2 \delta_{ij} B^2)##. To make things easier, I just want to focus on the part with the electrical field, i.e. I want to find the divergence of ##E_{ij}=E_iE_j-\frac 1 2 \delta_{ij}E^2##. In matrix form, this tensor should look like this...
Thread 'Applying the Gauss (1835) formula for force between 2 parallel DC currents'
Please can anyone either:- (1) point me to a derivation of the perpendicular force (Fy) between two very long parallel wires carrying steady currents utilising the formula of Gauss for the force F along the line r between 2 charges? Or alternatively (2) point out where I have gone wrong in my method? I am having problems with calculating the direction and magnitude of the force as expected from modern (Biot-Savart-Maxwell-Lorentz) formula. Here is my method and results so far:- This...
Back
Top