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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Magnetic hysteresis curve does not form a closed loop?
Sometimes the hysteresis curves for magnetic materials that I see in articles have this noticeable discontinuity at the saturation points, the curve doesn't exactly close into a loop.
For the example ...
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What is the resistance of this structure? [closed]
A device is made of a material with resistivity ρ and has a structure as shown in the below picture. What is the resistance of this structure?
In my opinion, it is equal to a single block of material ...
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What do we call a material property that has non-equal values when evaluated in opposite directions?
What do we call a material property that has non-equal values when evaluated in opposite directions?
That is, if the material property $k_{ij}$ has a value of $X$ along the direction defined by the ...
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Resource Recommendations for Rigorous Analyses of Impact Mechanics and Terminal Ballistics
I'm an engineer with close relations in body-armor-wearing occupations and am interested in better understanding the extent to which the physical separation of hard body armor plates from the surface ...
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Can infrared light pass through solid materials
I have an IR sensor at about few tens of mm (millimeter) from a heating source (incandescent bulb or heating element). The phototransistor in my sensor is lead lined but I guess it is sensitive to a ...
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“Emergent magnetic monopole” discovered (5th December 2023)
Looks like a few days ago (5th December 2023) a research team discovered “emergent magnetic charge” in antiferromagnetic materials, and the result was published on Nature Materials.
The finding was ...
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Anomaly in Photoelectric effect
Good day.
While doing a physics experiment for a university assignment, I was tasked with measuring the maximum wavelength at which a potassium cathode shined by a monochromatic light emits electrons.
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Do there exist materials whose Opacity varies with temperature?
Do there exist materials whose Opacity varies with temperature?
E.g a Material that becomes more Opaque as it gets hotter?
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Refractive index from absorbance, transmittance or reflectance spectra of thin film, knowing its thickness [duplicate]
I have absorbance (Abs), reflectance (R%) and transmittance (T%) data of TiO2 deposited thin film on FTO glass substrate. The data was collected using UV-Vis spectrophotometer. Also, I know the ...
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Refractive index of titanium dioxide films as a function of wavelength for 400 C ° annealed films
I used UV-Vis/NIR spectrophotometer to extract the measurements of refractive index %R corresponding with wavelengths in the range of 190-1100 nm of TiO2 thin film deposited on FTO glass substrate. ...
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Justification for Statements on Beam Deflection
I am teaching students at a high school about bending of a beam (the beam is clamped at one end and then an applied force acts downwards close to the end of the beam to bend it).
I thought that it did ...
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How do relativistic effects lead to gold not usually occuring in a 2+ oxidation state?
In the literature I found compounds where gold occurs in a 1+ and 3+ oxidation state, like the perovskite CsAuCl_3, and also came across the fact that gold usually doesn't occur in a Au2+ state. ...
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Very long timescale stress relief in glass
If someone scratches a glass, it is becoming weaker at this point, and more prone to cracking.
But with time (tens and hundreds of years ) glass looses its shape because glass has amorphous structure. ...
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When compressing a powder from a single direction, does it compress evenly? [closed]
I have some powder in a container with one side open. If I then compress it from that open side, does the powder evenly compress, or will the side closer to the opening (or furthest from the opening) ...
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Expression relating Force and change in length when force is changed with time [duplicate]
Suppose we have a rod with Young's modulus (Y) and length L and a constant area (A). Now we apply a force (on both ends so that rod is in equilibrium) which increases it's length by suppose ∆l. By ...
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