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Brain Implant Uses Graphene Instead of Metal Probes

Implantable electrodes for the (human) brain have been around for a many decades in the form of Utah arrays and kin, but these tend to be made out of metal, which can cause issues when stimulating the surrounding neurons with an induced current. This is due to faradaic processes between the metal probe and an electrolyte (i.e. the cerebrospinal fluid). Over time this can result in insulating deposits forming on the probe’s surface, reducing their effectiveness.
Graphene-based, high-resolution cortical brain interface (Credit: Inbrain Neuroelectronics)
Now a company called InBrain claims to have cracked making electrodes out of graphene, following a series of tests on non-human test subjects. Unlike metal probes, these carbon-based probes should be significantly more biocompatible even when used for brain stimulation as with the target goal of treating the symptoms associated with Alzheimer’s.
During the upcoming first phase human subjects would have these implants installed where they would monitor brain activity in Alzheimer’s patients, to gauge how well their medication is helping with the symptoms like tremors. Later these devices would provide deep-brain stimulation, purportedly more efficiently than similar therapies in use today. The FDA was impressed enough at least to give it the ‘breakthrough device’ designation, though it is hard to wade through the marketing hype to get a clear picture of the technology in question.
In their most recently published paper (preprint) in Nature Nanotechnology, [Calia] and colleagues describe flexible graphene depth neural probes (gDNP) which appear to be what is being talked about. These gDNP are used in the experiment to simultaneously record infraslow ( […]


Exploring Cheap Tantalum Caps of Mysterious Provenance

We’ve all heard about the perils of counterfeit chips, and more than a few of us have probably been bitten by those scruple-free types who run random chips through a laser marker and foist them off as something they’re not. Honestly, we’ve never understood the business model here — it seems like the counterfeiters spend almost as much time and effort faking chips as they would just getting the real ones. But we digress.
Unfortunately, integrated circuits aren’t the only parts that can be profitably faked, as [Amateur Hardware Repair] shows us with this look at questionable tantalum capacitors. In the market for some tantalums for a repair project, the offerings at AliExpress proved too tempting to resist, despite being advertised alongside 1,000 gram gold bars for $121 each. Wisely, he also ordered samples from more reputable dealers like LCSC, DigiKey, and Mouser, although not at the same improbably low unit price.
It was pretty much clear where this would be going just from the shipping. While the parts houses all shipped their tantalums in Mylar bags with humidity indicators, with all but LCSC including a desiccant pack, the AliExpress package came carefully enrobed in — plastic cling wrap? The Ali tantalums were also physically different from the other parts: they were considerably smaller, the leads seemed a little chowdered up, and the package markings were quite messy and somewhat illegible. But the proof is in the testing, and while all the more expensive parts tested fine in terms of capacitance and equivalent series resistance, the caps of unknown provenance had ESRs in the 30 milliohm range, three to five times what the reputable caps measured.
None of this is to say that there aren’t some screaming deals on marketplaces like AliExpress, Amazon, and eBay, of course. It’s not even necessarily proof that these parts were in fact counterfeit, it could be that they were just surplus parts that hadn’t been stored under controlled conditions. But you get what you pay for, and as noted in the comments below the video, a lot of what you’re paying for at the parts houses is lot tracebility.

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REPORT: Democrats Have Put Corrupt Obama AG Eric Holder in Charge of Vetting VP Candidates for Kamala Harris

Democrats have reportedly put Obama’s corrupt attorney general Eric Holder in charge of vetting VP candidates for Kamala Harris.
What could possibly go wrong?
How much do you suppose Democrats are paying Holder’s law firm for this service?
Politico reports:

Eric Holder is running Harris’ veep vetting process

Former attorney general Eric Holder is in charge of vetting of running mates for Vice President Kamala Harris, Reuters reported.
The news that Holder and his law firm would be overseeing the operation was confirmed to POLITICO by a person with knowledge of the process.
RedState has more:
Those corrupt, racialized, and radicalized embeds never went away, of course. They rested comfortably under new Obama AG Loretta Lynch, then no doubt wreaked havoc during the Trump administration—which is why Jeff Sessions and William Barr could not do much of anything that was actually productive. Then, Merrick Garland simply picked up where Holder left off. Holder was successful in seeding the ground, and we have been reaping the harvest since 2016. That’s the Deep State in a nutshell.
His involvement in the vetting process may reassure Democrats that a longtime political and legal hand is helping to ensure Harris’ pick, should she win the nomination, is free of major conflicts. Any choice needs also to be suited to help her beat Republican Donald Trump and potentially to assume the presidency some day if she were to triumph in November but then at some point be unable to complete her duties.
Potential names that have been floated as possible running mates for Harris include Pennsylvania Governor Josh Shapiro, Michigan Governor Gretchen Whitmer, U.S. Senator Mark Kelly of Arizona, Kentucky Governor Andy Beshear, and North Carolina Governor Roy Cooper.

Holder has apparently been cashing in on the left’s DEI craze.

Since 2018, Eric Holder and his law firm, Covington & Burling, have been conducting “civil rights audits” of Fortune 500 companies.
For as much as $2,295 an hour, Holder told the companies to adopt race-based DEI policies.
Then the companies got sued.
— Aaron Sibarium (@aaronsibarium) July 22, 2024

RedState is right. These people never go away. There’s too much money to be made in the system. […]