Discussion in 'Amateur Radio News' started by WA4CZD, Jan 21, 2019.
With regard to negative capacitance and voltage this is a case of "Less is more!".
I admit it...
I have a forward bias!
Been using it in a flux capacitor for years.
We saw this effect last Winter Field Day at about ten pm, when a fifth-grader substituting for the regular operator dropped his cell phone into spilled cola during a break in an 80 meter run. Unfortunately his mother wiped it up before we could record the pattern for posterity. The question is: is it repeatable? To which we can affirmatively answer: by any fifth grader.
... oft referred to as a "Reduction in Force" (RIF)?
That may all be well and true, but I think the Dillon-Waggoner Graviton Polarity Generator achieved similar results without resorting to hydrocoptic marzel vanes.
If you combine anti-inductance with anti-capacitance, you get anti-resonance, a condition where all energy applied is immediately dissipated at the anti-resonant frequency.
I understand that a 'negative capacitor' would break physics in roughly the same way as a 'negative resistor', and thus is a great source of jokes.
In a nutshell, if you had a 'negative capacitor' with a small charge on it, you could connect it to a resistor, and the current through the resistor would _increase_ the voltage on the capacitor. A negative resistor would have a negative resistance, and thus supply power rather than consuming power.
However I think that the original post is about some real news, not an April 1 gag.
In the same way that negative _incremental_ resistance is possible, it is possible to have parts of larger systems that look like negative capacitance.
I don't think we are looking at breaking physics here and getting negative energy for our warp drive; I think we are looking at microscale manipulation of electric fields for things like transistor gates.
Wait a minute... Did I lose a whole month.... is it April already?????
Not, it's not April. Look at the publication. Nature, the international journal of science. It's not QST!