Recent content by Erikve

Dear all, I think I have an easy problem for you, however I get confused by the simplicity and complexity at the same time. Situation is like this: I have a point charge at a distance d from an infinite plate with thickness comparable to the distance d. Is there difference between the...

Dear all, I measured some very nice data, but it's difficult to analyze, but I try to get out of it what I can. I have diverging resistance and did measure with standard lock-teqnique: apply 0.45V over preresistor and send current over sample and measure the two-probe resistance over the same...

This gold circuit will serve as a calibration coil on a capacitive moving plate. So in principle I want as less as possible loss between coil and plate, the same for dielectric loss, since this influence the capacitive value. Best would be if I have totally isolated surface between copper plate...

Okay, we are talking about brass (copper+small amount of zinc), I cannot replace this component. In principle the isolating layer could be everything, if you have better idea, please tell me! Titanium I normaly use as adhesion layer of the gold, so maybe this can be used indeed also on the copper.

Dear all, I have a quite easy plan: W want to evaporate a gold circuit on a Brass plate. Between this copper and gold I need to make an isolating layer to prevent short-currents. i thought to make this layer of Silicon-oxide. Is the possible to evaporate and what source can I use this for...

I don't do the last step, because it will be recharged by water after removing it from he-atmosphere. So that's not an option. I think I have to rewire the part that is in oven.

I think this is not the correct place to ask this. But the answer is easy: the potential almost always is defined as the difference between two points. This can be for example between infinty and the edge of your sphere. The reason why you are puzzled is that there is an altenative way to define...

Maybe I was indeed a bit short about the details. Our experimental setup is in principle apart from the HE3-system, we can insert it in the He3-cryostat. So during the heating the sample is in a pumped tube with inside an insert (at top the sample). I have over here poorly no pictures, but you...

Hi all, I have a quite easy question, but I have no experience with this. At our lab we do a lot of experiments on low temperatures (<4K). For example we use helium-3 to obtain 500mK. To obtain this temperature we use Zeranin-wires in our setup. But now our sample (graphene) should be...

I have part of the solution. I can use the following line: [M{1:13}]=textread('ee0100.csv','%d%d%d%d%s%d%d%d%d%d%d%d%d','headerlines',9,'delimiter',';'); Problem is now that I get lines like: And simply use M(:,1) doesn't give me the contents but [63x1 double]. So is it possible to...

but how can I read this? :(

and why not? It should be a csv-file... and how can I read it in another extension?

The file is exactly like this post, I also try to change the comma in textread in an a ;

I'm sure that this will be a quite simple question, but I will not work for me. I try to read data from a csv-file with matlab(see under post). But is doesn't work... I try to skip the the first 9 ninen lines, because they are useless for the data analyses. I try the following line with matlab...

Hi, I trying to complete an exercise, but I have the idea that it is completely wrong what I'm doing. I use Matlab to program the exercise, and that is not the problem. The exercise is: Part a looks like very easy, so that was not a problem to do. I have only no idea what they mean in...