{c}
{tag=SQUID device}

https://starcryo.com/mr-squid/

This is the cutest product name ever.

> Since 1992, Mr. SQUID has been the standard educational demonstration system for undergraduate physics lab courses.

Used e.g. at <video Superconducting Quantum Interference Devices by UNSW Physics (2020)>

Their manual: https://www.phys.ksu.edu/personal/cocke/classes/phys506/squidman.pdf

<YBCO> device, runs on <liquid nitrogen>.


Mr. SQUID

{c}
{tag=Electronic component}
{tag=Magnetometer}
{wiki=SQUID}

Can be used as a very precise <magnetometer>.

There are high temperature <yttrium barium copper oxide> ones that work on <liquid nitrogen>.

\Video[https://www.youtube.com/watch?v=d_vrhzX3VcE]
{title=Superconducting Quantum Interference Device by Felipe Contipelli (2019)}
{description=Good intuiotionistic video. Some points deserved a bit more detail.}

\Video[https://www.youtube.com/watch?v=0kl3ucjh2Uw]
{title=Mishmash of SQUID interviews and talks by Bartek Glowaki}
{description=
The videos come from: https://www.ascg.msm.cam.ac.uk/lectures/[]. Vintage.

Mentions that the <SQUID device> is analogous to a <double-slit experiment>.

One of the segments is by John Clarke.
}

\Video[https://www.youtube.com/watch?v=ql2Yo5LgU8M]
{title=Superconducting Quantum Interference Devices by <UNSW> Physics (2020)}
{description=
An experimental lab video for <COVID-19> lockdown. Thanks, <COVID-19>. Presented by a cute and awkward Adam Stewart.

Uses a <SQUID device> and control system made by <STAR Cryoelectronics>. We can see <Mr. SQUID> EB-03 written on the probe and control box, that is their educational product.

As mentioned on the Mr. SQUID specs, it is a <high-temperature superconductor>, so <liquid nitrogen> is used.

He then measures the <I-V curve> on an <Agilent Technologies oscilloscope>.

Unfortunately, the video doesn't explain very well what is happening behind the scenes, e.g. with a <circuit diagram>. That is the curse of university laboratory videos: some of them assume that students will have material from other internal sources.

* https://youtu.be/ql2Yo5LgU8M?t=211 shows the classic voltage oscillations, presumably on a magnetic field sweep, and then he puts a <magnet> next to the device from outside the <Dewar>
* https://youtu.be/ql2Yo5LgU8M?t=253 demonstrates the formation of <Shapiro steps>. Inserts a <Rohde & Schwarz> signal generator into the Dewar to vary the flux. The result is not amazing, but they are visible somewhat.
}

\Video[https://www.youtube.com/watch?v=7PJguB3Y8L8]
{title=The Ubiquitous <SQUID device>[SQUID] by John Clarke (2018)}


Ciro Santilli @cirosantilli 37

 Tagged: SQUID device