Questions tagged [electrical-properties]
Use this tag to ask questions on electrochemical properties such as cell EMF, chemical conductance and electrolytic cells. Also use 'electrochemistry' tag with these questions.
17 questions
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What makes some metal-organic frameworks (MOFs) conductive while most are insulating?
MOFs are generally poor conductors, yet some show decent electrical conductivity. What specific structural or electronic features enable this? Are there any design rules emerging from current research ...
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Is the fastest relaxation peak in DRT real or a mathematical artifact?
I am analysing a series of electrochemical impedance spectroscopy (EIS) results for a simple redox reaction of the following form.
$$ \ce{Re <=> Ox + e-} $$
At low frequencies, the impedance ...
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Electrical properties of glycol / water mixtures
I'm looking for a reference on electrical properties (specifically, conductivity) of mixtures of water / ethylene glycol. Specifically, I'm interested in
How does the electrical conductivity of the ...
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Temperature and electrolysis
Based on my understanding, metals conduct electricity better at lower temperatures than at higher temperatures as the resistance to electron flow is lower.
Then, what about ionic compounds? Do they ...
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How do the ions in electrolytes lead to lower dielectric constants compared to pure water?
I am interested in the salts used in the gel electrophoresis buffers. As I understand it, one of their roles is to change the conductivity of the medium, because otherwise the electric field would be ...
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Which reaction occurs in calcium vanadate when it comes in contact with water?
I am a physics student currently studying the electrical properties of $\ce{CaVO3}$ and I have noticed that the surface of my thin film samples, which were originally smooth and transparent, now have ...
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Can electrical conductivity be measured by colorimetric or photospectrometrical method?
I would like to measure electrolyte leakage from plant material after exposure to stress. Stress damages cell membrane integrity, resulting in efflux of intracellular components to the surrounding ...
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Calculating the net charge of DNA oligo
How can I calculate the net charge of a DNA oligo? I have a bunch of different sized oligos (vary from 9 to 50nt long) which I am using for microscopy (DNA-PAINT) and I need to know their charges ...
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How do I show that a transition is electric dipole allowed with group theory/symmetry?
This is actually a follow up of this question
The follow-up is not because of the electric instead of magnetic dipole (this is trivial).
It is because I'm interested in extra info.
Suppose I have a ...
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What is the net gain of charge carriers in a semiconductor if an atom is removed?
In pure germanium, all Ge atoms are bonded with a tetrahedral geometry. It has a band gap and is a semiconductor. If we remove one Ge atom, what type(s) and how many charge carriers will be generated? ...
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Why is copper a better conductor of electricity than calcium?
How would we compare the electrical conductivity between copper and calcium? I understand that electrical conductivity of a metal is dependent on the number of delocalized electrons for that metal. ...
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How is graphene electrically conductive?
Researching graphene I found that it can potentially be as strong or even stronger than current superconductors. However, my understanding is that a substance is electrically conductive only if it has ...
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Conductivity measurements of demineralized water - Unexpected results. Looking for explanation
I'm trying to measure the conductivity change of demineralized water over a few days. But I get results I can't explain.
Setup
This is the circuit and cell I'm using:
Where $R_x$ is the conductivity ...
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What is the electrical conductivity of pool water?
What is the electrical conductivity of pool water? I tried to find some information, unfortunately without success. I need to know it to make an underwater electronic project.
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Salt concentration and electrical permittivity of water
We know that the electric flux density $D$ can be related to electric field intensity $E$ as
$$D = \epsilon(\omega) E$$
where
$$\epsilon(\omega) = \epsilon_0 \epsilon_r(\omega)$$
and $\epsilon_0$ ...
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