Questions tagged [material-science]
The study of how the properties of matter arise from its structure at all scales and of how processing can be used to modify those properties (often in pursuit of a specific application).
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Reason for stress and strain
Do you think that the stress is due to strain or vice versa?
I have this doubt because of two of the following scenarios:
Consider the case of the rigidly fixed bar. It is now heated (say be some ...
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Bulk modulus of metals at room temperature
Imagine a sample of solid metal at room temperature. It exhibits resistance to compression which is expressed as its bulk modulus. Part of this resistance originates from a treatment of the ...
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What is the maximum load in the puncture resistance formula?
I've been trying to research how fencing jackets work and I've learned about puncture resistance but I was trying to find the formula for how it was calculated and I found this website that gives me ...
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Limit of proportionality for compression of materials
Similar to how there is a limit of proportionality for the extension of materials, is there a limit of proportionality for the compression of materials. If there is, then what sort of structural ...
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What is the unit cell and the bravais lattice of a perovskite?
First year PhD. student here. I keep trying to wrap my head around what kind of bravais lattice and how does the unit cell of a perovskite look? I am specifically interested in bismuth ferrite (BiFeO3)...
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Predicting electrical mean free path in nanostructures?
How does one roughly predict the
mean free path for
electrical conduction
in a nanostructure at different temperatures and under different electrical conditions such as different voltages and ...
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Can doping significantly decrease a monolayer semiconductor's band gap to almost metallic levels?
I am currently an undergraduate student tackling DFT calculations on my 3x3 CsGeBr3 perovskite monolayer with Fe-doping and Biaxial Straining using Quantum Espresso thru BURAI. I have found out that ...
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Identifying symmetries of rank 2 tensors
Let's say I have a material with permittivity tensor: $$ \epsilon_1 = \begin{pmatrix} \epsilon_{xx} & \epsilon_{xy} & 0 \\
\epsilon_{xy} & \epsilon_{yy} & 0 \\
0 & 0 & \...
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Are there any materials known to be harder than diamond under high pressure as of April 2024?
This is a variation of this question where I asked if materials under high pressure can break standard pressure density records.
I am curious about materials that become superhard under very high ...
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Please suggest a good book on Material Sciences and Thin Films
I am a fourth semester student of a Bachelor's Degree in Physics.
The only graduate level book that I have read on Solid State Physics is
An Introduction To Solid State Physics by Charles Kittel
But ...
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Why are there triclinic and monoclinic lattices, but biclinic is never mentioned?
When classifying the Bravais lattices we have the
triclinic (point group ${\rm C_i}$) and the monoclinic $({\rm C_{2h}})$ cases, but we do not see the "biclinic" case listed. Why not?
It ...
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We know that people can hear whether the water is hot or cold from the act of pouring, but have we ever considered the shape and material of the cup? [closed]
We know that one can hear whether water is hot or cold from the act of pouring, which is related to the viscosity of the water, the column of air inside the container, and the overall vibration of the ...
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Physical interpretation of a dielectric's absorption curve
A given dielectric will behave as an absorbing medium for some frecuencies (those near one of the material's several resonant frequencies), whilst it will behave as a non-absorbing medium for the rest ...
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If a material is homogeneous in $\varepsilon$, can this material be made of different atoms?
I'm currently trying to derive the microscopic expression for the dielectric constant of a material following my proffessor's notes. However, he admits that, even though he assumes $\varepsilon=...
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How do materials scientists find and make candidate materials?
When searching for new materials that might exhibit interesting quantum effects such as superconductors or topological insulators, how do experimental physicists go about the process of making ...
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