https://doi.org/10.5281/zenodo.22439106
Microscopic Mechanism of Interaction between Two Parallel Solid Plates at Close Range
Author: Yan Jiaqing
Affiliation: Independent Theoretical Physics Researcher
Abstract
Two parallel solid plates without macroscopic magnetism show no observable interaction at ordinary separation, yet when the gap shrinks to the microscopic close range, a weak mutual attraction spontaneously appears at the interface. The existing mainstream theories explain this classic phenomenon through the van der Waals dispersion force, the Casimir vacuum effect, and macroscopic contact adhesion models, but every one of these conventional theories suffers from mechanistic defects. They either consider only instantaneous electric field fluctuations, or rely on the hypothesis of virtual photon exchange in vacuum, or merely give macroscopic phenomenological descriptions, and none of them explains the underlying nature from the intrinsic microscopic magnetic field of the electron. Electrons at the surface of all solid substances undergo spin and orbital motion, and every moving electron produces a local microscopic magnetic field. A macroscopic plate is nonmagnetic because the huge number of electron magnetic fields are disorderly arranged and statistically cancel one another. When two plates approach closely, the separation between surface electrons shrinks greatly, the local electron magnetic fields escape from the macroscopic cancellation effect, and microscopic magnetic adaptation, interlocking and coupling take place, thereby producing a real microscopic mutual attraction. This interaction is a direct close range effect of the electron's own magnetic field and requires no introduction of virtual photon exchange. If the gap continues to shrink to the lattice scale, the coordinated interlocking of a large number of electron magnetic fields produces a very strong binding effect that maintains the stability of the periodic lattice (other factors also influence crystal formation, which is not expanded upon in this paper). By comparing the deficiencies of the conventional theories, this paper establishes a new mechanism of close range electron microscopic magnetic interaction and fully explains the physical nature of close range interaction between parallel solid plates and the stability of crystal structure.
Keywords
parallel solid plates; close range interaction; local electron magnetic field; microscopic mechanism; lattice stability; interface coupling
- Introduction
Two ordinary parallel solid plates, uncharged and without macroscopic magnetism, remain independent of each other at everyday macroscopic separation, with no observable attractive or repulsive force. But as the two plates gradually approach and the gap reaches the nanoscale microscopic range, a stable weak adhesive force appears between them. This phenomenon is a classic problem long studied in interface physics, contact mechanics and fundamental quantum physics, and three mainstream explanatory systems currently exist in the academic community.
First, the van der Waals dispersion force theory. This theory holds that instantaneous asymmetric distribution of the atomic electron cloud forms instantaneous electric dipoles, and neighboring atoms induce polarization in each other to produce long range attraction. It attributes the close range adhesion of plates to electric field fluctuation effects and completely ignores the magnetic field produced by electron spin and orbital motion.
Second, the Casimir effect theory. This theory is based on quantum vacuum fluctuations and the virtual photon exchange mechanism. It holds that the restricted vacuum modes between the plates create a pressure difference between the inside and the outside, thereby producing the plate attraction. This explanation depends heavily on the vacuum virtual particle hypothesis and is not a direct interaction between real particles.
Third, the JKR and DMT macroscopic contact adhesion models. These theories fit the adhesion effect from surface energy, elastic deformation and macroscopic contact interface features. They are phenomenological summaries that do not touch the microscopic origin at the atomic and electronic level.
All of the above conventional theories can fit the macroscopic experimental phenomena, but none reveals the true underlying mechanism. The conventional physical system generally holds that the electron magnetic moments of ordinary solids cancel in disorder, so microscopic magnetic fields do not participate in macroscopic interface interactions. This understanding directly ignores the physical fact that the local magnetic field of a single electron can independently manifest itself under close range conditions.
In fact, surface electrons of all solids are always accompanied by local microscopic magnetic fields. Macroscopic nonmagnetism is a statistical averaging result, not the disappearance of microscopic magnetic fields. On this basis, this paper proposes a completely new microscopic mechanism: the close range interaction between parallel solid plates is essentially an attractive effect produced by the interlocking and coupling of the microscopic magnetic fields of surface electrons under close range conditions. When the gap is further compressed, large scale coordinated magnetic coupling can produce a strong binding effect and maintain lattice stability, which differs from the electric dispersion force, the vacuum virtual particle force and the macroscopic surface energy explanation.
- The Principle of Macroscopic Nonmagnetism of Plates and the Real Existence of Microscopic Magnetic Fields
All ordinary solid plates, whether metallic or nonmetallic, show no magnetism in macroscopic measurement. The fundamental reason is that the spin directions, elliptical orbital orientations and motion phases of the huge number of extranuclear electrons inside the solid are completely disordered.
Every moving electron independently produces a tiny local magnetic field, so countless miniature magnetic elements are distributed over the surface and interior of the solid. Because the orientations of these magnetic elements are randomly distributed in all directions, forward magnetic fields and reverse magnetic fields cancel over large areas. From the macroscopic statistical point of view, the total magnetic moment is zero, so the whole plate is observed to be nonmagnetic, neutral and noninteracting.
The core physical fact must be made clear:
Macroscopic cancellation means the overall magnetic field is zero, which does not mean the microscopic magnetic field of a single electron disappears.
At the microscopic level, the local magnetic field of every electron exists permanently and objectively. It is merely concealed collectively by statistical averaging at large separation and large scale, so its effect cannot manifest itself.
- The Mechanism by which Microscopic Magnetic Fields Escape Cancellation and Produce Interaction at Close Range
When two parallel solid plates are far apart:
The distance between the plates is far greater than the interaction scale of a single electron, and the microscopic magnetic fields of all surface electrons on both sides remain in a globally disordered and cancelled state, with no macroscopic adhesive force appearing.
When the two plates keep approaching and the gap shrinks to the microscopic nanoscale:
The surface electrons on both sides are pulled extremely close to each other and enter the direct coupling range of single electron magnetic fields. In this region the number of electrons is small and the distances are extremely short, so the macroscopic large scale statistical cancellation law no longer applies.
The local magnetic fields of the surface electrons on both sides sense, adapt to and interlock with one another. The magnetic field lines interweave and fit together, spontaneously forming a low energy matched configuration, and a microscopic magnetic attraction between electrons is thereby produced.
The microscopic magnetic attractions of countless surface electrons accumulate and superimpose, and finally manifest themselves as an observable close range interfacial adhesive force at the macroscopic plate interface.
3.1 Further approach: large scale coupling of microscopic magnetic fields and lattice stability
When two parallel solid plates keep approaching and the gap is further compressed to the lattice scale, the local electron magnetic coupling is no longer a scattered effect of a few electrons. The local magnetic fields of a large number of electrons undergo coordinated interlocking on a wide scale. These numerous magnetic fields form a stable, periodic matched arrangement and produce a microscopic binding effect of very high strength, sufficient to lock atoms at fixed equilibrium positions and maintain the periodic lattice structure.
It should be noted that two already formed solid plates, even when brought into close contact, usually cannot directly fuse into a single crystal. On the one hand, the separation between the surface atoms of the two plates can hardly reach the extremely close distance between atoms inside a native crystal. On the other hand, crystal formation is also jointly constrained by many other factors such as lattice orientation, surface impurities and atomic migration conditions. This paper does not discuss the remaining causes in depth.
But it cannot be denied that once the interatomic separation shrinks to the lattice scale, the binding force brought by electron magnetic coupling is very considerable, and it is an indispensable important effect for maintaining the stability of the crystal structure. Close range adhesion between plates and the formation of crystal lattice belong to different stages of the same physical mechanism, differing only in the range of action and the scale of coupling. Weak interfacial adhesion is the local coupling of small scale magnetic fields; lattice stability relies on the coordinated coupling of large scale, periodic magnetic fields. The two share the same origin, and this unifies the mechanism of interfacial adhesion and the mechanism of crystal structural stability.
- The Physical Mechanism by which Distance Determines Whether Interaction Exists
1.State of large distance
The electron magnetic fields are globally disordered and cancelled as a whole. The microscopic effect is completely concealed, and the plates do not interact.
2.State of close microscopic gap
The local surface electrons escape from the macroscopic statistical cancellation system. The local magnetic fields manifest independently, interlock and couple, and produce a stable attractive effect.
3.State of extremely close lattice scale
Large scale coordinated interlocking of electron magnetic fields produces a strong binding effect and maintains the periodic lattice stability.
This perfectly explains the experimental phenomena: no effect at large distance, adhesion produced at close range, and crystal structure maintainable at extremely close approach.
This mechanism also proves that the close range attraction between parallel plates is not vacuum virtual photon squeezing and not instantaneous electric polarization, but a real microscopic close range coupling effect of the magnetic fields carried by real electrons.
- Comparison with and Correction of Conventional Mainstream Theories
5.1 Correcting the single electric field understanding of the van der Waals theory
The van der Waals theory recognizes only the instantaneous polarization attraction of the electric field of electrons and completely excludes the magnetic contribution. This is a one sided mechanism. At a real interface, two effects coexist: the electrostatic orbital interlocking of electrons (the source of friction) and the magnetic field coupling of electrons (the source of close range attraction and lattice stability). Electric field and magnetic field effects coexist.
5.2 Rejecting the Casimir virtual particle hypothesis
The mechanism of this paper relies entirely on real electrons, real magnetic fields and interactions between real particles. It needs no assumptions of vacuum, virtual photons or quantum fluctuations. The mechanism is simpler, more materialistic and more consistent with classical real particle physics.
5.3 Going beyond the macroscopic adhesion phenomenological theory
Conventional contact mechanics only describes phenomena and does not explain the essence. This paper goes directly to the microscopic origin of electron orbits and electron magnetic fields, completes the ultimate interpretation of the mechanism, and further explains the reason for the stability of metallic lattices.
- Unified System of Mechanisms
The close range magnetic coupling mechanism of parallel plates established in this paper can be fully unified with the previous paper Microscopic Mechanism of Coincidence for Static Friction:
1.Electrostatic interlocking of elliptical electron orbits produces transverse resistance and forms static friction.
2.Close range interlocking and coupling of local electron magnetic fields produce vertical interfacial attraction and form the close range adhesive force between plates.
3.Large scale coordinated magnetic coupling at extremely close approach produces a strong binding effect and maintains the stability of the metallic lattice.
Electric force and magnetic force each perform their own functions and together constitute the complete underlying system of microscopic interactions at solid interfaces.
- Conclusions
The microscopic essence of the close range mutual attraction between two parallel solid plates is not the dispersion electric polarization, the vacuum virtual particle pressure or the macroscopic surface energy effect recognized by conventional theory, but a real magnetic interaction produced by the local magnetic fields of surface electrons escaping macroscopic cancellation and interlocking and coupling with one another at the microscopic close range scale.
The macroscopic nonmagnetism of solids is an apparent result of the statistical cancellation of numerous electron magnetic fields and does not mean that microscopic magnetic fields do not exist. When the distance shrinks to the microscopic scale, the local electron magnetic fields manifest independently and couple attractively. When the gap is further compressed to the lattice scale, large scale coordinated magnetic interlocking produces a strong binding effect and maintains the stability of the periodic crystal structure (other factors also influence crystal formation, which is not expanded upon here). This mechanism abandons all kinds of virtual field and phenomenological fitting theories, completes the mechanistic closure based on the real microscopic field effects of electron motion, opens up the underlying physical logic linking interfacial adhesion and crystal structural stability, and perfects the fundamental physical system of microscopic interactions at solid interfaces.
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