--- Log opened Mon Feb 24 00:00:27 2025
00:28 < fenn> relationship ended with Piratenpartei now 
00:28 < fenn> Partei für Verjüngungsforschung is my best friend
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03:33 < hprmbridge> kanzure> https://www.goofish.com/search?q=4090%2048g&spm=a21ybx.search.searchInput.0
03:34 < hprmbridge> kanzure> "For anyone curious a lot of these "4090"'s are 4090 cores reballed onto 3090 PCB's (Yes they are pin compatible) so that they can get the 24X1/2/4 whatever memory config they have"
03:41 < jrayhawk> "They've also been modding both the 4090 and 4090D to get the memory to 48GB making them into a Frankenstein RTX-A6000'ish cards."
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05:30 < kanzure> "due to gravitional time dilation, the earth's core is 2.5 years younger than its crust."
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05:49 < kanzure> what is the maximum achievable write speed for single-atom probe tip for electron beam lithography or SEM/TEM/whatever? assume the work surface has a resist layer. can we do 10^12 writes/second? what about 10^15 writes/second?
05:49 < kanzure> are we limited by electron-resist interaction chemistry? signal generator electronics for driving the e-beam?
05:52 < kanzure> or, likewise same question for focused ion beam milling. beam size is like 10-30 nm at least, so minimum 10-15 nm step size, and some amount of time needs to be spent shooting ions at the surface to make an impact.
10:03 < hprmbridge> nmz787> TorchResist: Open-Source Differentiable Resist Simulator
10:03 < hprmbridge> nmz787> https://arxiv.org/abs/2502.06838
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10:09 < hprmbridge> nmz787>  https://cdn.discordapp.com/attachments/1064664282450628710/1343645936512929863/image.png?ex=67be074a&is=67bcb5ca&hm=b1978837ab127201ff5d2cd5ba434d4b80de68e67e90bd3105339c181865485d&
10:09 < hprmbridge> nmz787> from https://spie.org/AL25/conferencedetails/design-technology-co-optimization-and-computational-patterning
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10:16 < hprmbridge> nmz787> https://github.com/ShiningSord/TorchResist
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11:14 < nsh> (technically, due to gravitational time dilation the earth's crust is 2.5 years older than its code)
11:14 < nsh> (the converse is due to its relative absence)
11:18 < hprmbridge> kanzure> "Top-down fabrication of atomic patterns in twisted bilayer graphene" https://arxiv.org/abs/2301.01674
11:32 < L29Ah> nsh: so what has more entropy, Solar system or a black hole with the mass of the Solar system?
11:34 < nsh> entropy is counted (up to a coefficient, 1/4 by convention) in Planck units on the surface area enclosing a physical system
11:34 < nsh> this arose from the study of black holes but its 'general'
11:36 < nsh> oh rather, these days one might say this is one side of a picture in a correspondence (AdS-CFT) 
11:37 < nsh> the information that defines the system can be considered to live on the horizon in terms of conformal field theory, or to live in 'the bunk' in terms of Anti-de-Sitter space
11:39 < nsh> you can trace (pun intended) this back to how the concept of entropy arose in the context of thermodynamic of systems defined by bulked variables (e.g. a gas by its pressure, temperature, density, etc.) 
11:39 < nsh> 'Basically, the entanglement entropy of the subsystem A is the Von Neu-
11:39 < nsh> mann’s entropy SA when we trace out the subsystem B. This “lost informa-
11:39 < nsh> tion” and the inaccessibility to B, at first sight, looks very similar to the black
11:39 < nsh> hole entropy. As is pointed out in many works (e.g. [19]), this similarity was
11:39 < nsh> the historical motivation of introducing the EE in QFT.'
11:39 < nsh> - https://fse.studenttheses.ub.rug.nl/13062/1/Carretero_Sahuquillo_-_Bachelo_1.pdf
11:40 < nsh> Leonard Susskind's lectures are probably the best (that i recall) introduction to this
11:42 < nsh> there's a qualitative difference because of the dynamics. a gravitational system like a solar system over indefinitely extended periods is chaotic: you may eventually expect something like mercury being ejected from the solar system by some gravitational sling shot or whatever. when things collapse into a black hole the information can escape again but only through hawking radiation where it's in some sense scrambled and emerges steadily (as a function of the 
11:42 < nsh> temperature of the black hole), initially quite slowly and then triumphantly at the end
11:52 < hprmbridge> kanzure> "Electrical treeing in polymer nanocomposites" https://www.iitk.ac.in/npsc/Papers/NPSC2008/oral/p233.pdf
11:58 < hprmbridge> kanzure> or https://faculty.sustech.edu.cn/wp-content/uploads/2018/09/2019040111032347.pdf
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12:05 < hprmbridge> kanzure> conductive dendrimers grow on all kinds of electrode surfaces. to me it looks like neurons trying to randomly grow everywhere.
12:28 < hprmbridge> nmz787> http://dx.doi.org/10.1101/2024.08.18.608446
12:28 < hprmbridge> nmz787> High-Resolution Spatial Mapping of Electrocorticographic Activities with a 4096-Channel, Multiplexed Thin-Film Transistor Array
12:28 < hprmbridge> nmz787>
12:28 < hprmbridge> nmz787> """Here we present a flexible and implantable electrocorticography (ECoG) device array (NeuroCam) based on metal-oxide semiconductor thin-film transistors (TFTs), to record brain activities at a large scale. Employing a multiplexing technique, the system is capable to record ECoG signals with up to 4096 channels and a density of 44 sites/mm2, while compressing the fan-in/fan-out leads to around a
12:28 < hprmbridge> nmz787> hundred. In a rabbit model with epilepsy, the NeuroCam array maps abnormal spike-wave discharges with an exceptional spatial resolution (150 μm) across extensive brain areas."""
12:29 < hprmbridge> kanzure> "Experimental demonstration of reservoir computing with self‐assembled percolating networks of nanoparticles" https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/adma.202402319
12:29 < hprmbridge> kanzure> above article shows spoken digit recognition or classification using "percolating networks"
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--- Log closed Tue Feb 25 00:00:28 2025