Material science Definition and 108 Threads

So I am trying to find the amount of energy needed to break apart stone into different sized chunks (when either punching it or blowing it up) and I'm using this method to estimate it: Assume the object got broken up into cubes of the desired diameter Find the surface area of all the cubes...

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 amperages based on the composition and dimensions of the structure? For instance in carbon single and...

Hi, I have data of impedance but due to limitation of software after measurement I do not receive numerical values for admittance and real conductivity vs frequency. How mathematically I can convert Nyquist plot into plot real conductivity vs frequency?

I was wondering if anyone knows of any technical pop-sci books about condensed matter physics and/or superconductivity that are at the technical level of something like the "A Very Short Introduction" series or the Feynman lectures. That is, something that goes sufficiently into depth into the...

What is/are the electric conductive material(s) which has/have the least heat/thermal conductive?

So for this question, I understand the math but just wanted to be clear on a few things. So I had this question on my midterm but instead of tensile and compressive stresses, it was tensile and tensile stress. I initially thought that the delta sigma in the integral was the maximum stress so in...

I mean you could buy a mirror or silicon wafer but they give say 0.5 nm or 5nm 'roughness' which I suspect is the mean average roughness but this doesn't rule out a high "bump" way above the mean average such that for example 1 million bumps of 1 nm and just one of 5 will result in...

Why is the enthalpy of γ-Fe at high temperatures higher than the enthalpy of α-Fe at low temperatures?

Help would very appreciated. Also I am new to this website so if something seems wrong please tell me :)

Do I need to have a solid background in Material Science if I would like to study thin-films?

The method I employed was based on a nested loop. I ran into two issues with this approach 1. The code took way too long to run, easily going for over 7 minutes. 2. In the end, it didn't even completely work, due to the "index exceeding the array length". This confuses me For the relevant...

I want to build a spherical speaker with a diameter of about 50 cm. The frequency response should be relatively deep. Now my question is, which type of plastic is best for it and how thick does the housing have to be?

Hello, I'm looking for a book that explains the subject of material science so that I can apply that knowledge to mechanical engineering. I was wondering if Materials Science and Engineering: An Introduction by Callister might be a good choice. Could that book help me in mechanical engineering...

Scientists finally created a 2D Supersolid! There existence has been predicted since the 60’s and now we have them. The scientists who created it don’t really know what it could be used for as it’s so much in the infancy stages, it’s practically a zygote. As an aspiring futurist, I was wondering...

Toughness is defined as ability of material to absorb energy when deforming before fracture. Materials with high ductility and strength will have high toughness. What is meant by ability of material to absorb energy? What is connection between strength, ductility and ability to absorb energy so...

This is related to a question that I asked here: https://physics.stackexchange.com/questions/650709/one-way-magnetic-shielding. Please take a look at the check-marked answer. There is a material that can act as a one-way magnetic/electric shield. My question is if this material were to be used...

The structure of the cell membrane is depicted as being formed from a bilayer of phospholipids with their hydrophilic portions pointing outwards and their hydrophilic portions facing each other. But as I look at the histology of the epithelial layer of the epidermis or mucous membranes, I am...

Hi all, I am currently a rising Junior in college on track for a BS in MSE and loving it so far. This summer I am doing a remote internship for a National Lab and ever since day one, I have loved it. I also have been doing undergrad research for the past year and find it incredibly interesting...

Hey guys, I am looking for any insights for getting a job in the simulation or modelling industry with a Masters in Material Science and Engineering. I have worked with composites during my masters and found out I don't have much interest in doing lab testing. I don't have any plans of doing a...

I am only new to Physics Forum but I am looking forward to a fruitful information sharing about the mysteries in the world of Physics. Furthermore, I am interested in knowing deeper structures of materials.

the paper is on material science and i can't find it any where not on google not any where , could you guide me to a website that i can use to search for it? Гуляшинов А.Н., Хантургаева Г.И., Калинин Ю.О. Сульфидизация церуссита полисульфидами натрия при измельчении окисленной свинцово-цинковой...

This is a fun one, sort of! I am working on a singing saw that can be amplified with a regular magnetic pick up, from an electric guitar. I made a blade from laser cut1095 blue tempered spring steel (0.042" thick). It sounded great, but after a few months of service, the blade cracked. What is a...

In pure crystals,such as,in silicon and germanium,the band gap is more than that in compound semiconductors,such as,GaAs.Why is that so.

I am just looking for some opinions. I have been considering going to get my masters in Material Science (I have a B.S. in physics). I currently have a great job in the field, and it teaches me a ton. When getting my masters, I would keep the job, and they would even pay for a lot of it. I can't...

Is it advisable to have a Material Science background if I would like to pursue a postgraduate research studies in advanced thin film technologies?

Hey, I’m kinda of in a crisis in my head here. I’m in the US to pursue my masters in mechanical engineering. After the introductory material science course, I believe I’ve got a greater interest towards materials than mechanical engineering. Would transferring to Material Science be a good...

Where are the solid-state Physics and Material Sciences overlapping? which topics?

Is the posted program a program of Physics of Material Science ? Can anyone help>> https://www.uni-leipzig.de/fileadmin/user_upload/Physics_IPSP_BSc_27.04.17.pdf > https://www.uni-leipzig.de/fileadmin/user_upload/Physics_IPSP_MSc_28.04.17.pdf

Hi guys, Quick background: I'm 26, in Australia, and have a degree in an unrelated field (economics). I'd like to go back to uni next year to study engineering or physics and I'm currently doing an enabling course since I didn't do any of the higher math/physics/chem subjects in high school...

I’m using a zvs inductive heater to try to melt some 99.85% polycrystalline silicon, as would occur in the Czochralski process, but the silicon workpiece is not melting let alone even getting hot. The silicon workpiece is about the size of a playing dice, and becomes fully conductive after...

Hello guys, I received an admit to grad school for Mechanical Engineering, where my focus was initially Thermo-Fluids . I've also enquired about the Material Science department at the University(in the USA), and they are willing to let me transfer to the Material Science department provided I...

At the interface between: 1) conductor/conductor 2) conductor/semiconductor (or dielectric) 3) semiconductor/semiconductor (or dielectric/dielectric) What quantity should be continuous? Is it the electrochemical potential, only the chemical potential or is it the electric potential? Since they...

Hello PF, I am currently pursuing my Masters in Physics with specialisation in material science. But I am interested in quantum mechanics and want to do PhD and then research in quantum mechanics. But in today's date is it good to go for theoretical physics rather than going for some...

Since positive charge on the photocatode increases work function of electrons, does charging metal photocatode negatively decrease work function? If not, why?

Hi all, I'm doing a bit of material science research at my university. I'm running molecular dynamics simulation programs like Lammps and Amber as part of it, and I'm pretty new to the whole thing (just like I'm pretty new to this forum). I'd like to ask, has anyone here used Amber to find their...

Does anyone know the tensile strength and other mechanical properties of reduced graphene oxide? I know that it has some similarities to both graphene and graphene oxide, but I can't find any data on its tensile strength.

When light travels through a transparent medium and is absorbed then re-emitted, do the phonons just move to a higher energy state after absorption? Is it the same as absorption and re-emission of light by electrons, aside from having a continuous range of available energies?

I am wondering why the material thickness is not factored into calculating bolt shear strength in a joint. I know that it is used when calculating the strength of the material itself and its susceptibility to deformation and tear out but why not the bolt? When you cut a piece of cheese you use...

Looking for a practical description. I have a feeling I am grossly misunderstanding something fundamental about electric circuits and apologize if my questions are confusing because of it. I have these two sources: acs hyperphysics My (probably naive) understanding of the process is as...

I'm trying to build a fanless computer case for a small electronic device. I'm trying to figure out what type of heat-sink material I should use. I have a solid copper rod about 3cm in length with a radius of .05cm. I've determined and calculated the density, specific heat, thermal...

I'm trying to find the impact or penetration depth of a projectile in the (reasonably) most realistic way possible. I assume this has many factors including velocity, the densities of both materials, shapes of both materials, the medium of which the projectile travels through, gravity, etc...

I would like to know if their are any materials that would allow light to pass in only one direction, In electricity we have diode, which will allow electricity to pass in only one direction, in optics how do we reflect light from one side and allow light from the other side to pass through?

Why in most practical applications, most materials properties are given without specifying crystal directions. Are they trying to say all materials are isotropic?

What is the physics behind heat transfer between two panes of glass? Commonly windows now are filled with argon (some cost) or krypton (pricey) At a given temperature all gas molecules have the same energy per mode, so heavy ideal gas molecules move more slowly than light ones, so heat...

A few years ago, I graduated from Wheaton College with a B.S. in Mathematics; my objective is to be a mathematician in engineering that helps mechanical engineers with their mathematical/statistical modeling. Since I graduated, I have been looking for internships in Chicago: Unfortunately, I...

which one is more physics based? which one is more prestigious?

Usually people talk about magnetic confinement schemes or some such thing for fusion reactions presumably because the pressure and temperatures would vaporize/destroy all conceived material vessels too quickly. I would like to hear someone talk about the limits of materials in this realm. So...

Specifically, for a high schooler with only basic physics and chemistry knowledge who is interested in the field

Hello everyone, I'm a sophomore student and I'm a bit confused about deciding my diploma programme. I'm really interested in physics and I don't want to work on a study field which is just full of mechanical things. EE sounds cool because of it's being hard and there are only a few people who...

From what I'm hearing, graphene will change the way we live, work and play. Everything from cars and clothing to workplaces and weaponry will incorporate the stuff. Is this true, the hype of stock promoters or something in between? Which aspects of life will be the most affected by the use of...