Tried finding out what this symbol means, but to no avail did not find it. Help!by Jin 06 Tags: band gap, quantum, quantum wells, square well, well width 

#1
Feb1512, 10:34 AM

P: 1

Hi,
Recently I've started an experiment called Quantum Wells, I was reading the lab script and came across a familiar looking symbol but could not put my finger on to what it means. The symbol in question is: Å (an uppercase "A" with a hollow dot [circle] just above of it) Here's the context: "CdS/ZnS as a function of well width from 3 Å to 60 Å (Ev = 0)" My question is what does this Å symbol mean? (Natural unit, definition, SI unit...etc) Thank you in advance. 



#2
Feb1512, 10:42 AM

Sci Advisor
P: 1,563

That is 1 Angström. One Angström is 0.1 nm.




#3
Feb1512, 11:07 AM

Mentor
P: 11,254

For the benefit of the original poster, Ångström was a Swedish physicist, and the "A with a ring" is a feature of the Swedish, Danish and Norwegian languages. 



#4
Feb1512, 12:40 PM

Sci Advisor
P: 2,507

Tried finding out what this symbol means, but to no avail did not find it. Help!
I thought it was the 7^{th} chevron for dialing Earth!




#5
Feb1512, 12:55 PM

Emeritus
Sci Advisor
PF Gold
P: 9,014





#6
Feb1512, 01:07 PM

P: 437

Call it a coincident but during yesterday's lab work I forgot to but that "dot" over A which then my professor pointed out to me . 


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