Nanomechanics is barely mechanical quantummechanics

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Revision as of 18:59, 6 February 2016 by Apm (talk | contribs) (symbolic math roughly finished)
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Math

Let us define "quantumness" as the ration of the energy quantisation (the minimum allowed energy steps) to the average thermal energy in a single degree of freedom:
Quantumness: <math> Q = \frac{\Delta E}{E_T} </math>
First we'll need the thermal energy:
Equipartitioning: <math> E_T = \frac{1}{2}k_BT \quad</math>
The size of the energy quanta depends on the system under consideration.

Reciprocative linear motion

The uncertainty relation: <math> \Delta x \Delta p \geq h \quad</math> Newton: <math> \Delta E = \frac{\Delta p^2}{2m} \quad</math>
Quantumness: <math> Q = \frac{h^2}{k_B} \frac{1}{m \Delta x^2 T} </math>


Reciprocative circular motion

The uncertainty relation: <math> \alpha \Delta L \geq h \quad</math> Newton: <math> \Delta E = \frac{\Delta L^2}{2I} \quad</math>
Quantumness: <math> Q = \frac{h^2}{k_B} \frac{1}{I \alpha^2 T} </math>

Values

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Discussion

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