My world's biggest thanks and blessings to Prof. Hajimiri for these clear-voice-recorded videos. My life has nothing to do with electronics and I am 40. These eye-opening lectures changed my life. (from a jobless man in S. Korea)
i guess im asking the wrong place but does someone know of a tool to get back into an Instagram account..? I somehow lost the password. I would appreciate any tips you can give me!
I entered university to major in Electronic engineering in 2024. Thanks to professor Hajimiri. Now my life has something to do with electronics and I am 45.
I am an EE IC designer. I've studied both EE IC design and dabbled a bit in QM. I really like the way Professor has linked the two together in a very understandable manner. Thank you for sharing this lecture.
Be aware! Prof lectures series like Game of Thrones for Engineers. Extremely addictive. I had no option but to binge watch. Excellent lectures Prof. Thanks a lot! 😁
Professor Hajimiri you are the best. I watched the whole series of lectures you made on circuits and they were enlightening. Now as my course in Electronics approaches next year I see you have started uploading new high quality versions of Analog Circuit Design. You and professor Razavi are my favorite Electrical Engineers. God bless you and keep the lectures coming :)
Same here. I started looking for some video on Shot Noise after some reading from Simon Haykin and I found Prof Hajimiri video and I was awestruck with the simple explanation and explanation by random variables. Then I previewed the lecture series of Analog circuits. I am already fan of Prof. Razavi Eletronics series and his teaching art, Prof Hajimiri way of relating things made me his fan. Thank you Pro. Hajimiri.
The way this lecture is structured reflects the depth of your understanding and passion to explain with the intent to be really understood by the student. Thanks
I started looking for some video on Shot Noise after some reading from Simon Haykin and I found Prof Hajimiri video and I was awestruck with the simple explanation and explanation by random variables. Then I previewed the lecture series of Analog circuits. I am already fan of Prof. Razavi Eletronics series and his teaching art, Prof Hajimiri way of relating things made me his fan. Thank you Pro. Hajimiri.
I watched the whole lectures. When i watched your lecture its like i am reading HAFEZ. You are the HAFEZ of integrated circuit. You and Prof.Razavi are HAFEZ and Ferdowsi! You guys are not engineers you are poets! The main unsolved problem for me is that I don't know which one of you is which! all i know is that i love electronics. thank you thank you thank you. From Mashhad. Love you so much. PS: I hope you keep recording your lectures for us.
I have to say I love Professor Hajimiri's lecture style. It's been a very long time since I did the basics and this is so refreshing! Such fun and enthusiasm for a field which he obviously loves.
Greetings from the Philippines !!! Thank you very much Prof. Hajiimiri. Your lectures are very enlightening and insightful. I like your approach in emphasizing the thought process that went behind the circuit, emphasizing more on the (reusable) concepts (like lego pieces as you frequently mention) needed to come up with more complex circuits. It made me realize that a schematic should be viewed better (not as interconnection of devices but) as logical interconnection of concepts (lego pieces). You also encourage your students to practice critical thinking by asking them challenging questions and encouraging them to ask questions. This way they are more involved in your classes. I hope you inspire more professors around the world to follow your style in teaching. You just don't teach, you also empower by emphasizing on the dynamics of analysis and problem solving. You and Prof. Razavi are an inpiration to me. God bless you Sir !!!
Never thought off quantum mechanics is so interesting ! your lecture series are like adventurous story telling !!! we eagerly wait to listen next lecture .
As a computer science and technology major graduate, I suffered from my undergraduate education in mainland China. We never even mentioned the concept of resistivity in our whole program, not to mention most important basic concepts like operational amplifier were left unclear. The textbooks were created by graduate students of the author printed on the books, who might not know not more than some undergrad and just throw you a bunch of charts copied from who knows where and doesn’t explain anything. The “professors” just read through the ppt accompanying the textbook all through the classes. Then everyone pretends they did their job.
The best way to identify a piece of diamond is to put in your tongue. If it feels like ice then it is diamond. This is because of the high thermal conductivity it takes away the heat from the tongue that it feels cold where the diamond touches. Other than Carbon, Silicon and Germanium all crystallizes in a diamond lattice and are good semiconductors. GaAs also have similar atomic arrangement like the others but it is diatomic with a two atom basis and has Zinc blende structure. GaAs semiconductor has many great advantageous properties but not ubiquitous in the industry due to the chemistry of GaAs which makes them not stable and robust like Silicon.
1. Sir why are you considering electrons in Conduction bands to be free electron? Is energy of conduction band positive? Otherwise how can electron be free in conduction band? 2. When we brings the atoms close to each other, the energy level forms energy band. But how it is possible with integer value of n ?
Hello, Prof. Thanks for uploading these lectures on RU-vid. You won't believe how invaluable they can be for many of us. I've been watching some of circuits and systems lectures and I see they end at 39. The ones in analog circuit design start at 101. I'm just wondering about the ones from 40-100. What do they cover ?
They are two different courses, the 0XX series is an undergraduate course on circuits and systems, and the 1XXN series is graduate/senior course in analog circuit design
30:00 Discernable, observable and noticible are not interchangeble. Observable is the logical ability to observ it, while the rest is the ability to spot it regardless of other effects or noise.
Prof. Hajimiri, thank you very much for your elegant and unequivocal demonstration. I have watched the lecture and revised it but I want to do some solving to deepens my understanding, so please can you suggest a good reference?
Thanks for the great lecture! It will be great if you can clear the following doubts. 1. Why are things quantized only when the total energy is negative? 2. Will there be holes in metals too? The example band diagram that you wrote didn't show it. If not, why?
1. Well, the quantization is an artifact of having finite boundary conditions on the wave equation, which is also related to the boundedness of the energy. An unbounded electron can assume any energy because there is no boundary condition on the wave equations. This is an artifact of the wave nature of the matter (the same way that a standing wave can form on a guitar string exciting only certain frequencies). 2. This really depends on the exact energy band diagram of the metal in question in the most general case.
Hello Dr. Hajimiri, thank you for this amazing analog circuits playlist. I just have a question, is there a difference between this playlist and the old one topic wise?
Sir, for anything to get quantized why should it have a bound state and for bound state why is total energy negative sir ???? I didn't understand sir ... please help sir !..
Hi, Sir thank for such a great explanation. Just for the shake curiosity, I have a question could electron can ever get the positive energy level, I mean As per equation it can never gain positive energy level no matter whatever value ''n'' could take.
Yes, they can. That would be a free electron not attached to an atom (or a crystal lattice). The reason the equation does not show it, is that the bound electron is assumed in the derivation of the equation, namely, when we assume a standing De Broglie wave forming the orbit. Hope this helps.
@@AliHajimiriChannel Thank you so much, sir, for your quick response. So sir again the question arises that what equations can describe the energy of the free electron and before that to get an estimation of the energy of these free electron we first need to know the position of these electrons right sir so how we predict that. Could u please comment on this.
what defines the energy states at which conduction happens in conduction band. Everything is well explained upto the point of energy band formation from discrete states to band seperation but one missing link is " what defines the conduction band " Could you please help.
52:15 - Why will electron become a free electron when it moves to the next energy level, why doesn't it fill the next energy level, that is still be a bounded electron?
It is an electron moving in the conduction band. It is "free" in the sense that is can move around freely in the conduction band that has a lot of empty states, but not an unbounded electron.
Sir i am an new recruited analog design engineer from Bangladesh.I am a fresh graduate. And i struggle much with design things. Please guide me and give me tips how i am gonna be a good analog designer as you know resources in our like third world countries is very poor. And most of our studies based on memorising not on realising so i am much used to memorising that hurts me when i see a new thing as my basics are not clear
@@AliHajimiriChannel is it planned to make it available? it will be helpful fr students to test their knowledge they learn .. thanks for the lectures :)
41:00 - When the 2s and 2p states mix and form new 4n and 4n states, what kind of orbital types do they have, let's say lower 4n states? What would be the best book or source to learn necessary solid-state physics for microelectronics?
