Tunneling Definition and 268 Threads

Dear Folks: After seeing this Nano-tech forum... Nanalyze Forums - Direct conversion of heat to electricity http://www.nanalyze.com/forums/topic.asp?TOPIC_ID=1006੾ I sent a post to Rodney Cox president of Borealis http://www.powerchips.gi/ (I also asked him about Boeing's patent, and he...

Dear Folks: After seeing this Nano-tech forum... Nanalyze Forums - Direct conversion of heat to electricity http://www.nanalyze.com/forums/topic.asp?TOPIC_ID=1006&#2686 I sent a post to Rodney Cox president of Borealis http://www.powerchips.gi/ (I also asked him about Boeing's...

If two capacitor plates at a moderate voltage (200-300V) and low capacitance are kept very close to each other would there exist a tunneling current between them. If the tunneling current will exist, then it will gradually reduce the energy of the capacitor. Where will the used capacitor...

I have some questions about barrier tunneling in a scanning tunneling microscope. From what I know, the microscope consists of a one atom tip very close to the surface of the metal being examined. A potential difference is applied between the tip and the metal and some of the electrons manage...

Im learning about quantum tunneling and read something about that there are classical solutions at imaginary times, so called instantons? Can anyone help me out with this connection?

the causality problem and tunneling?

Consider a Quantum Mechanical particle approaching a barrier (potential) of height V_0 and width a. What will the sketch of the probability density look like if there is a 50% chance of reflection and a 50% chance of transmission? Can you explain why cause after reading Griffith' s Quantum...

Recently, I posted a thread on theories on teleportation:https://www.physicsforums.com/showthread.php?t=44179I discussed about how the transporter in Star Trek operates and why it would never work. Any procedure that convert matter to energy would be deadly and reconstruct person from this...

Hi! I always thought that tunneling was a quantum phenomenum. So another day I found a problem which is about the part of the light that can be transmitted (refracted) even if you send I light beam in an angle greater then the limit angle of two material boundary. By the way looking at a...

some say that quantum tunneling would act sortof like a hyperspace/warp thing. any views on what it actually is?

When a beam of electrons (near relativistic or non-rel.) intersects with a beam of protons or a "fixed" proton target, what percentage of the electrons tunnel through the proton(s) or is there an absence of electrons on the exact opposite side (the backside) of the proton? This question is a...

Can somebody explain quantum tunneling to me? And the thing about why amplitudes when they are trapped, the energies must choose from a distinct set of values? And why when particles that are totally free to wander will have any energy that they like? Also, why in the atomic spectra, more...

Do neutrinos experience tunneling, and thus we think they have no mass yet they do because they are tunneling? Pete

Hi everyone! I'm having some problem calculating the probability for a particle to penetrate a barrier (potential well). This is a math assignment in school, and we haven't learned anything about this area, so I may be fumbling in the dark completely. Anyway, we have the Schrödinger...

Richard.P.Feynman once said "I think it would be safe for me to say that no one in this world understands Quantum Mechanics". Such an amazing theory Quantum Mechanics is, yet hard to understand. Quantum Tunneling has always been given in small portions of many textbooks and details have not been...

If an ensemble of quantum partcles, with energy E, traveling in x direction encounter a very wide potential barrier V0 > E, the ensemble wavefunction will exponentially decay within the barrier. I thought that meant that there was a small probability of detecting an electron within the...

If there were a way to isolate a macro-sized object so that it fell under the heisenburg uncertainty rule, and then the wave function for the whole object would "un-collapse", do you think it would be possible to use this as a mode of transportation? When we see electrons move from one position...

What is quantum tunneling?