tullatulla

5 ms·

1.
by tullatulla 2y ago
* cannot resolve atoms on a surface, in transmission mode (STEM) and with the right sample, as in the article it's another story.
2.
by tullatulla 2y ago
Small correction: Scanning tunneling microscopes can do that. They are basically a very sharp tip scanned across the surface. Scanning electron microscopes, where a beam of electrons is rastered across the surface can not (yet?) resolve ato
3.
by tullatulla 2y ago
I believe you can only make playlists available offline. So, you would have to create a playlist containing that single song and then there should be a download button (didn't test it). What a nightmare.
4.
by tullatulla 3y ago
160 wafers per hour, not minute. Still impressive
5.
by tullatulla 3y ago
Well you don't need a bike for walking, so that's gotta count for something (if efficiency is defined as total energy spent per distance)
6.
by tullatulla 3y ago
Well, you would need a template with 8x smaller features than a EUV mask (at least in one direction, 4x in the other). Ebeam lithography can in principle do this, but it's at the resolution limit and the shot noise will mean there will
7.
by tullatulla 4y ago
Can also highly recommend the translated version!
8.
by tullatulla 4y ago
What's going on with Figure 1? Caption and legend don't match and bars are stacked? And here I thought Nature has some standards...
9.
by tullatulla 4y ago
Definitely a better choice than paracetamol, which is metabolized by the liver...
10.
by tullatulla 4y ago
Oh yes you are right! That's apparently part of the first 1MeV TEM. Should be the high voltage source for the electron gun. The electron optics were most likely magnetic, not electrostatic. There is a whole movie about it: https:&#x2F
11.
by tullatulla 4y ago
Those have nothing to do with the microscope. A STM is basically a very sharp needle flying just above the surface and measuring the tunneling current with a few volts applied at most. It's rather small, most space will be taken up by
12.
by tullatulla 5y ago
If you don't mind moving to Germany, check out Carl Zeiss (SMT). We supply the optics to ASML and also make our own semi equipment directly sold to fabs. Lots of growth and interesting challenges at the cutting edge of physics.
13.
by tullatulla 5y ago
You would really need a free electron laser to produce sufficient photons at the desired wavelength. The lower the wavelength, the less photons you have at constant power, so shot noise becomes an issue...
14.
by tullatulla 6y ago
Looks like the peak ICU occupation in Germany has clearly passed: 11/04: 2088, 76% on ventilators 10/04(?): 2453, 76% -"- 04/04: 2680, 83% -"- 03/04: 2421, 83% -"- 02/04: 2139, 83% -"- 01/04
15.
by tullatulla 7y ago
Pharmact lateral flow test had zero false positives among 126 negative samples as far as I can see: https://www.nature.com/articles/d41587-020-00010-2 https://pharmact.eu/ Don't know if this would
16.
Veredus Laboratories’ VereCoV detection kit obtains provisional approval(mobihealthnews.com)
1 points by tullatulla 7y ago|0 comments
17.
by tullatulla 7y ago
The author seems to mix up Gibbs free energy with entropy. The remark that thermal equilibrium equals maximum entropy is simply wrong. All examples can be explained with minimization of the free energy: dG = dH - TdS dH == internal energy (