Negative resistance? (1 Viewer)

Users Who Are Viewing This Thread (Users: 0, Guests: 1)


Staff Emeritus
Science Advisor
Gold Member
From wikipedia, there is a reference to "composite configuration of carbon nanotubes which appears to exhibit anomalous results which resemble a static negative resistor", and "Gabriel Kron, while a scientist for General Electric, is thought to have built a negative resistor for the US Navy's "Network Analyser"."

Is there more to this (or is it a 'fringe' case)? If the latter, does it really belong in wiki?
it's not a fringe case. look up the tunneling diode link at the wiki article. tunneling diodes do have a (U,I)-region like that.
Tunnel Diode is not a static device, its Imposssible within the laws of Physics to have a static negative resistor.
As far as I can understand the Wikipeida arttical it's talking about negative differential resistance and therfore I don't really find it unbeliavabele (perhaps a bit unusual).
Yes, negative differential resistance means that although it has a positive
resistance, a slight increase inthe voltage causes less current to flow.

A true negative resistance supplies power.

The Physics Forums Way

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving