Yes there is such a tool, SSM!
Hi all
Bear with me as I am a new member to this forum, digesting all I can handle and now to provide some insight concerning this Post's inquiry...
In the world of high tech electronics, namely CPU design and testing there is great need to do as much Non-Destructive analysis as possible. A new technique I was involved with developing is called SSM, Scanning SQUID Microscopy, where SQUID is Superconductive QUantum Interference Device. A quick description of how it works will enlighten you to the power and possibilities of this technique.
Firstly the tool uses a very small ~30 micron diameter superconducting loop, the loop is kept at about 75K or liquid Nitrogen cold. There are some very sophisticated electronics that without actually touching the superconductor can output a voltage proportional to the supercurrent flowing in the loop. very quickly, a superconductor or superconducting loop that passes thru a magnetic field will setup a current, a supercurrent because the resistance for all practical considerations is ZERO. The superconductor is beyond just sensitive to small magnetic fields.. it is extremely super sensitive. It can react and create a supercurrent with a magnetic field some 1000 times weaker than that of earth's mag field. The SQUID tip is actualy scanned over a part or device that may have a short that we energize with an AC current. Currents as low as 20 nanoamps at just a few volts.. the SQUID tip is adjusted to be as close as possible to the part surface and is then raster scanned over the device, as it scans the SQUID currents are sensed and stored for every XY position.. when done the current or magnetic field Intensity is mapped and then Maxwellian converted to a Current density map.. or the actual current pathway... so we can detect where the short is.. or what the circuit looks like.. even though it may be embedded in something.
So what this means is that the SSM can scan a living leaf and detect the tiny electrical impulses sent along what would be called nerve pathways...I have done this.. A current density map can be generated for the living leaf.. and then by cutting or damaging the plant or the leaf a new scan can be made to reveal how the plant leaf reacts to stimuli by the changes in the electrical impulses. Similarily multiple SQUID sensors can be arranged around the human head... and while thinking or whatever you want to have happen in the brain.. you can scan the brains electrical impulses/pathways and see exactly what and where the current is flowing. The SSM is capable of detecting both AC and or DC current as well as static magnetic fields or domains trapped in grains of steel or rock, or map a new $20 dollar US bill and see the direction of the trapped magnetic domains so you can tell which Mint the bill was really made at!! Ink that has been laid wet and dried in the presence of certain magnetic fields traps that orientation.. SSM can map that too
The experiment would be a great way to prove that kirlian photography is just random woo woo...an actual live and then cut free leaf could be scanned and the magnetic fields saved...and then compared against the kirlian pics...I will bet there will be no correlation.
The SSM can be used to do things that are also only talked about in back room CIA meetings..One of the capabilities that SSM has been used for is to read the magnetic fields/domains of erased tapes... Ie. certain erased Nixon conversations!!! I can say no more than that...The tool had to be modified so the tape could stream by under the SQUID tip rather be raster scanned as we normally do...
The sensitivity of the superconductor is such that we must take great pains to always remove or filter out all the background noise, ie any large pieces of Steel moving nearby.. like elevators, or shopping carts etc.. as well as cell phones..The tool or SQUID tip is kept inside a well shielded enclosure to help with this.
So search google etc for SQUID or scanning magnetic field microscopy...what you seek is available... I know.. I helped create it!!!
