Another mechanism demonstrating superconductivity w/carbon
Posted: Mon Nov 11, 2013 11:00 pm
http://scitation.aip.org/content/aip/jo ... /1.4808207
I believe this is the 2nd (maybe the 3rd) type of experiment that is similar to Johan Prins' work with superconduction near a graphite surface. If you recall, Johan extracted electrons outside the surface of a n-doped diamond substrate, creating an insulating layer that prevented said electrons from returning, and which then transferred measured current without an electric field present.
Read the whole article, it's pretty good, but in case it's TLDR:
In this experiment, Yasushi Kawashima (Tokai University, Japan) took HOPG flakes, put them in a PTFE (teflon) ring-shaped container, and soaked the flakes in alkanes (n-heptane and n-octane) for one day.
They then passed a magnetic field through the ring, inducing a current in the ring. The generated magnetic field was promptly shut off, and the magnetic field in the ring persisted. They then separated the ring at a junction point, and the magnetic field immediately disappeared.
They repeated the experiment (at least once obviously), and kept the ring intact for 21 days. They then measured the magnetic field, and its strength matched the magnetic field on day 1. They then left it for another 29 days (50 days total), measured the field, and it matched the field on day 1.
The big deal here is, this is something that is pretty dang easy to reproduce. In other words, you can repeat this experiment with a moderate amount of equipment. And you can build a small-scale energy storage device as a proof of concept by stacking these rings.
If this is in fact reproducable, this drastically changes the game when it comes to high temperature superconductors.
I have some theories on why this happens, but that's for another post in this thread, and first I'd like to hear your guys thoughts.
I believe this is the 2nd (maybe the 3rd) type of experiment that is similar to Johan Prins' work with superconduction near a graphite surface. If you recall, Johan extracted electrons outside the surface of a n-doped diamond substrate, creating an insulating layer that prevented said electrons from returning, and which then transferred measured current without an electric field present.
Read the whole article, it's pretty good, but in case it's TLDR:
In this experiment, Yasushi Kawashima (Tokai University, Japan) took HOPG flakes, put them in a PTFE (teflon) ring-shaped container, and soaked the flakes in alkanes (n-heptane and n-octane) for one day.
They then passed a magnetic field through the ring, inducing a current in the ring. The generated magnetic field was promptly shut off, and the magnetic field in the ring persisted. They then separated the ring at a junction point, and the magnetic field immediately disappeared.
They repeated the experiment (at least once obviously), and kept the ring intact for 21 days. They then measured the magnetic field, and its strength matched the magnetic field on day 1. They then left it for another 29 days (50 days total), measured the field, and it matched the field on day 1.
The big deal here is, this is something that is pretty dang easy to reproduce. In other words, you can repeat this experiment with a moderate amount of equipment. And you can build a small-scale energy storage device as a proof of concept by stacking these rings.
If this is in fact reproducable, this drastically changes the game when it comes to high temperature superconductors.
I have some theories on why this happens, but that's for another post in this thread, and first I'd like to hear your guys thoughts.