Muddiest Points: Crystal Defects and Burgers Vectors

This video contains the explanation of students' muddiest points regarding crystalline defects and burgers vectors including the various defect types, how to find Burgers Vectors from schematics, and how to find the dislocation density from a micrograph.
To study the vocabulary used in this video, visit this site:
quizlet.com/MatSciASU
We're also at:
www.slideshare.net/mseasuslides
This work was supported by NSF Grants #0836041 and #1226325.

[@joeyGalileoHotto]

20 Minutes explains better than 2 1/2 hours of reading the textbook. Thanks man!

[@FrostyButts]

Your explanation of Burger's vector finally made something clear I didn't understand the purpose of for years. So simple though.

[@afghanbachajan]

i got excited thinking its gonna be the girl from phase diagram -___-

[@veeds74123]

I have a test on this today and this helped a ton! Thank you!

[@ahmednouh9347]

where's the girl who explain phase diagram 😂😂😂😂😂?!😢

[@vishvesh10]

Excellent. Beyond words. Thank you for creating this Video Sir.

[@marwa70069]

THANK YOU SO SO SO SO MUCH like ive been staring at the textbook for a looong time, u made iy much easier in 20 min, LEGEND

[@ekanshsharma1325]

Much thanks ... You saved a life.

[@victorhuang1114]

Clear explanation about Burger's vector ! Thanks a lot !

[@vuly1084]

I just found your youtube channel and think your videos are really helpful!! please make some more!!

[@glennaaron1306]

thanks man, this helps me out to understand this subject.

[@irohairo3999]

I couldn't understand what burgers vector means with a japanese solid state physics text book. But I got it after watching this video. Thank you for your explanation!

[@nellvincervantes6233]

Just eat a burger you will understand it.

[@aminanazihaberdjane7552]

That was very helpful you deserve all the support! Thank you

[@cadejohnson7821]

Great review video, thank you !

[@kaokaoylan4510]

great help, thanking from the bottom of my heart, GBU

[@PriyanshuSharma-bi1fq]

This is the best video for defects. Thankyou

[@gunankhora9671]

amazingly explained

[@ibrahimnazemqader9153]

Thank you sire دەستت خۆش بێت

[@mrsush1994]

if in positive edge dislocation we consider our starting point from the point which is below the dislocation line in that case finish point is crosses the starting point and direction is reversed for the burgers vector??

[@jeenusss7264]

really nice concept building video i love it

[@saraal2593]

THANK YOUUU!!! please make more videos :)

[@polymathsmiles3525]

The best tutor 👌

[@loszhor]

Thank you for the information.

[@hassanbouh5621]

thank you for this video .amazigly explained

[@ram5798]

better than my grad prof's lecture. thanks.

[@oldcoder9000]

Excellent video.

[@yogendersingh3588]

thanks,you solved biggest mystery of my life.Now it is over.

[@KamilaBissenbayeva]

thank you for the video!

[@kaushiksaha6983]

Thanks.. your videa is really helpful.

[@jasonl.5973]

讲的好棒！！！thank u!!!!!!!!

[@prashantparaye3696]

Good one ....enjoyed....have video on iron carbon diagram.

[@rightwellmsiska7145]

Thanks. Really helpful

[@sayonchakraborty1523]

Thank you very much.

[@RSNielsen]

Thanks mate, Burgers vector was poorly covered in Kittels Introduction To Solid State Physics, didn't understand any of it :P

[@harshithb.n866]

huge respect❤❤❤

[@billshiff2060]

What I am trying to find out is what happens at the grain boundaries during plastic deformation. Also What happens during elastic deformation?

[@conceptualboy_vikash]

best lecture

[@JMW014]

really helpful

[@xshimont8700]

Er hat der Gitterbaufehler sehr gut erklärt!

[@lksinghchaudhary123]

nice work

[@maherdaibes9344]

thanks a lot

[@ishukalia1099]

thanks sir

[@dailysports4704]

thanx

[@user-dr.314]

At 14:26, the Burgers vector of the dislocation is from right to left (

[@SaltyCdog]

Due to the sheer stress applied? To me it seems the Burger's Vector is orientated left to right.

[@Historyreader23]

The effort applied to that half of the atoms goes from left to right, not to mention that the expanded atoms below the half-plane of atoms added to it are weaker, and since a burgers circuit has to be drawn perpendicular to the smaller side of that trapezoid kind of structure created from the dislocation. I'd surmise that the burgers vector ended up being drawn horizontally as well, so the weaker side of the dislocation (the lower one) is the one that gets broken away from it's original links first.

[@cloudalpha7163]

I don't understand how you can associate a direction to the Burgers vector? Doesn't it depend on the direction of the loop chosen? And since the direction of the loop has no physical significance, we can always change the direction of b?? I suppose this does not matter here as the slip still must occur parallel to b, but then I was learning about adding Burgers vectors, how does that even work when we cannot uniquely define the direction of b?

[@AdityaKKannan]

[@tartilasahid8056]

you didnt tell us how to calculate burgers vector, like the half of a fcc diagonal etc

[@tatakanmangkokayam7783]

Nying lagi darurat UTS cuk.......

[@rasoulghadimi3546]

thanks

[@soubanrafique9568]

great

[@ballscrush3245]

nice

[@orengg]

you might wanna notice that it is called "Burgers vector" and not "Burger's vector". it is named after a person whose surname was Burgers.

[@chezaray6230]

+oren G shut your face

[@pradeepkumar-sk8fz]

where is the ma'am

[@francislance7969]

U havent explained the bad and good thing about defects U_U.

[@manu333l]

+Francis Lance it depends on the use that you want to do for the material. The movement osf dislocations is asociated with the plasticity, which means that the more defects, the more movement and therefore more plasticity. Nevertheless the more plasticity, the less yield stress a material can support. So for example, for materials where you dont want plastic behaviours like infraestructures they are not good, we search the maximum resistance But the defects on them have the advantage of make the material less brittle, for example when an impact of an unexpected load

[@partialintegral]

Burgers', not Burrger's