Nano 3 Q&A - lecture 2.1 by https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq Post your questions and comments en-us 2021-02-14 11:43:35 UTC 2024-11-25 03:30:48 UTC hello@padlet.com https://padlet.net/icons/png/1f916.png Aleksander https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1214119723 What are the important quantities to look at when you want to find the materials for growth like Abbay?

]]> 2021-02-18 07:27:51 UTC https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1214119723 Thorstein: Has anyone made a (true) in-plane transistor with gate, source and drain in the same graphene plane? If not, is there a fundamental reason why it cannot be done? https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1214330878 2021-02-18 08:36:41 UTC https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1214330878 In plane heterostructure photodetector... peterboggild https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1214351361 2021-02-18 08:43:18 UTC https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1214351361 Luna: What does having a basis mean? Thanks https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1214528793 2021-02-18 09:42:36 UTC https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1214528793 Thorstein: I really like the historical context of dicoveries. https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1214723313 2021-02-18 10:53:06 UTC https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1214723313 Thorstein: A very small thing, maybe Antti could get a webcam mounted on face-level and directed horizontally :) https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1214751395 2021-02-18 11:04:24 UTC https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1214751395 Thierry: Mathematical derivations were done very quickly with many steps glossed over, made it hard to follow. Also some information was assumed to be universal, i.e. how the physical space of the lattice corresponds to the reciprocal space https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1214756764 2021-02-18 11:06:37 UTC https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1214756764 Qiaoling: unable to get the physical meaning of the new concept (e.g. berry phase), and why its important, what it can be used for... it wouble be better to insert some pictures or animations. https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1214757679 2021-02-18 11:07:00 UTC https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1214757679 Difficult to follow physics derivations/concepts - a bit too fast (maybe especially for those of us from a photonics background?) https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1214758428 2021-02-18 11:07:20 UTC https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1214758428 Thorstein: Good that there were breaks every ~45-60 min. https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1214760718 2021-02-18 11:08:18 UTC https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1214760718 Thierry: It was nice to see the math behind how graphene's properties emerge, makes it much more intuitive than just being told about the properties. Also nice to hear about how the field developed in a historical context https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1214762435 2021-02-18 11:08:58 UTC https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1214762435 Qiaoling: good to learn more phsic concepts, which are common to see in articles but hard to understand if you dont know it. https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1214768875 2021-02-18 11:11:28 UTC https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1214768875 Olga https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1214802816 There was some repetition of the basic structure of graphene, which could have been covered a little faster. Again, there was quite some time pressure for the group work.]]> 2021-02-18 11:25:55 UTC https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1214802816 Qiaoling https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1214895056 When deposite Au electrodes on monolayer graphene, will it introduce defect on graphene? and affects the quality of FET (e.g the mobolity....)]]> 2021-02-18 12:06:17 UTC https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1214895056 Qiaoling https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1214912225 Why the band structure of vertical transistor can be draw in this way?(the electron travels in z direction. why can we use the band structure calculated from xy plane in vertical situation. we suppose to use the band structure in z direction, but for monolayer material, it is not periodic, which means the band structure cannot be calculated). It is easier to understand the band structure of in-plane transistor. (It is a interesting question from one of my group members and I also courious about it)]]> 2021-02-18 12:13:06 UTC https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1214912225 Qiaoling https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1214951728 In fig.2a, there is no magnetic field. but in fig.2b-d, Why they added a magnetic field 0.4T. ]]> 2021-02-18 12:27:58 UTC https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1214951728 Olga https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1215044576 Time management with respect to breaks was better. It was nice to cover some theory, especially getting an explanation of pseudospin, chirality and the Berry phase.]]> 2021-02-18 12:59:24 UTC https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1215044576 Marc https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1218560433 The session worked out perfectly, it was nice to see the maths background on some of the properties we've seen.

]]> 2021-02-19 11:58:55 UTC https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1218560433 Henrik https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1218598975 As Peter has mentioned, I thought that the time management may have been a little bit too tight. But otherwise, no comments.]]> 2021-02-19 12:18:54 UTC https://padlet.com/peterboggild/pqoh4hwh6wh9vbqq/wish/1218598975