Advanced DIY Project Replicates Costly Biology High-Voltage Test Tool

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Markos

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Jul 27, 2020, 3:40:29 PM7/27/20
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Simon Quellen Field

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Jul 27, 2020, 4:17:58 PM7/27/20
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This looks exactly like the piezo device I proposed on this list years ago.



On Mon, Jul 27, 2020 at 12:40 PM Markos <mar...@c2o.pro.br> wrote:
https://www.electronicdesign.com/technologies/test-measurement/whitepaper/21133268/advanced-diy-project-replicates-costly-biology-highvoltage-test-tool

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Jonathan Cline

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Aug 4, 2020, 10:16:28 PM8/4/20
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If a high schooler or younger student brings a lighter to school they could very well be arrested.

On Monday, July 27, 2020 at 12:40:29 PM UTC-7, Markos wrote:
https://www.electronicdesign.com/technologies/test-measurement/whitepaper/21133268/advanced-diy-project-replicates-costly-biology-highvoltage-test-tool

 
Publication of this paper is odd, since I'm pretty sure this was done many years ago successfully by others.  Maybe the novel aspect is that they're distributing the print design files.

Abizar Lakdawalla

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Aug 4, 2020, 11:30:22 PM8/4/20
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there was a commercial product in the early 2000's based on the piezo lighter, looked like a pipettor that you dipped the electrode into a tube with cells ...

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Simon Quellen Field

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Aug 5, 2020, 12:13:59 AM8/5/20
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> If a high schooler or younger student brings a lighter to school they could very well be arrested.

The answer is not to give up and not teach science.
The answer is to make sure that the people in charge of schools actually learn science.
On Tue, Aug 4, 2020 at 7:16 PM Jonathan Cline <jnc...@gmail.com> wrote:

Jonathan Cline

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Aug 5, 2020, 2:21:07 AM8/5/20
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On Tuesday, August 4, 2020 at 9:13:59 PM UTC-7, Simon Quellen Field wrote:
> If a high schooler or younger student brings a lighter to school they could very well be arrested.

The answer is not to give up and not teach science.
The answer is to make sure that the people in charge of schools actually learn science.

I was thinking of the more recently famous "Ahmed Mohamed clock incident" (aka "clock boy") which was addiitionally a fault of racial profiling-bias, https://en.wikipedia.org/wiki/Ahmed_Mohamed_clock_incident

Curiously the lighter project would be bad science in addition to the possibility of getting arrested, since the paper's results can't be reproduced: 

" In fact, we are currently unable to obtain more crystals with the same parameters as the crystals used for all the transformation experiments described here (from Handi lighters, manufactured by Fayco Industries) because of this variability in characteristic parameters. Other lighters from many different brands that we bought from other stores (Walmart, Amazon, Target) did not provide the required combination of voltages and time constants. "

For $2.00 though, what can possibly go wrong, just have to keep the microfluidic chip in a $1,000 -20C freezer first.

One thing to note from my HV microfluidic experiments, the spark caused rapid pitting in the copper traces so were not usable for many cycles.  The authors suggest either aluminum foil and copper foil in their microfluidic channel.  So, their chip might only get a couple uses out of it regardless of sterilization, I don't believe the paper mentions this.



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