Dear community. As far as I understand, the dielectric confinement problem is scale invariant, while the quantum confinement problem has a length scale defined by the Bohr radius.
I have been trying to understand some experimental results in terms of the change in dielectric confinement of the system: one material phase, with a higher permittivity, embedded into a secondary phase with a lower permittivity. After some treatment, the phases distribution change, with the first phase increasing its volume ratio. This will be consistent with changes in dielectric confinement. The problem is that the scale of the phases is way above the Bohr radius of the specific material, and all the literature I have found, deals with dielectric confinement only for very confined systems, within the quantum confined scale.
Can anyone point me to some literature that deals with the scale of dielectric confinement?
Thanks.
The dielectric confinement is exploited in the dielectric waveguides such as the glass fiber. The confinement is based on the total reflection at the boundary of the two materials. It requires a boundary with two different dielectric constant and a an incident angle greater than that required for the total reflection. So the confinement may occur in a fiber with a dimensions in the order of the ligfht wavelength.
Best wishes
The question is how you define 'dielectric confinement': what exactly do you want to confine? In classical dielectric theory it is the plasmon that is referred to, which has an extension larger much than a typical electron confinement because it describes a collective excitation of many valence electrons so is a multi-atom phenomenon.
The dielectric confinement is exploited in the dielectric waveguides such as the glass fiber. The confinement is based on the total reflection at the boundary of the two materials. It requires a boundary with two different dielectric constant and a an incident angle greater than that required for the total reflection. So the confinement may occur in a fiber with a dimensions in the order of the ligfht wavelength.
Best wishes
- Badges
- Science topic
- Similar topics
- Physical Sciences
- Materials Science
- Materials
- Semiconductor