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Introduction
H. Ucar is a electronics/computer and software engineer specialized on cryptography and on related hardware and their applications. Currently doing research on magnetodynamics and magnetic levitation.
Skills and Expertise
Publications
Publications (10)
This is a report on a dynamic autonomous magnetic interaction which does not depend on polarities resulting in short ranged repulsion involving one or more inertial bodies and a new class of bound state based on this interaction. Both effects are new to the literature, found so far. Experimental results are generalized and reported qualitatively. W...
This video shows behavior of an electrical coil having motional degrees of freedom driven by an AC signal (60 Hz) having a small DC component subject to a static magnetic field. Since the coil has a DC component, the oscillatory magnetic field has non-zero time average.
This setup allows the coil to be aligned both in parallel and anti-parallel wi...
Abstract: It is shown that an inertial rigid body owning a cyclic magnetic dipole moment with non-zero time average can find both parallel and antiparallel stable alignments with an external static magnetic field with respect to its magnetic moment's time average vector. The solution covering anti-alignment is considered peculiar since it is not ac...
This material is moved to
https://www.researchgate.net/publication/372281916_A_note_on_the_stability_of_the_angular_motion_of_a_free_body_with_a_magnetic_moment_exposed_to_a_rotating_magnetic_field
A basic magnetic bound state solution in classical physics requires the free body to perform a distinct cyclic angular motion as a result of its interaction with a rotating magnetic field. This motion resembles that of the arm of a spherical pendulum, tracing a conical pattern. The orientation of the pendulum arm corresponds to the orientation of t...
This clip shows an experimental magnetic bound state solution where one magnetic assembly is held in air and a second cube magnet is also trapped in the same manner by the first one.
The top assembly is a ⌀25.4 mm spherical NdFeB/N42 magnet attached to a DC motor shaft through a plastic adapter. It is oriented radially but off from the plane appr...
This experiment features a magnetic bound state solution based on a rotating field allowing two bodies to circle it in planetary motions. In details, two spherical dipole magnets type NdFeB with grade N35 or less (⌀15 mm) are held in air on radial positions respect to a rotating magnetic assembly and free to make a trip around. Poles of these magne...
This is (the attached video) a toy maglev unit which can be used to carry a load along a magnetic track. It can be also be used to stabilize/compansate a negative stiffness induced by magnetic interactions in a magnetic track based transport system.
This is a report on a dynamic autonomous magnetic interaction which does not depend on polarities resulting in short ranged repulsion involving one or more inertial bodies and a new class of bound state based on this interaction. Both effects are new to the literature, found so far. Experimental results are generalized and reported qualitatively. W...
This is a magnetic trapping experiment dated 2015 where a stack of three small NdFeB magnets is held in air using a rotating magnetic field while exhibiting a complex dynamics.
The floating magnet assembly (FM) consists of a stack of two ⌀10×0.95 mm magnets and a 10×10×3 mm magnet in between. The driving assembly consists of two stacked ⌀25×4 mm m...
Questions
Questions (2)
Epitrochoidal angular oscillation patterns are common in experiments where a dipole magnet gets trapped in a rotating dipole field. These patterns are also seen on other particle trapping schemes and likely attributed to instability of the circular motion possibly to nonlinearities in these interactions. These are mentioned in my published article (https://doi.org/10.3390/sym13030442) however not analysed. Normally a trapped dipole body performs angular motion where its dipole axis orientation traces a circle. In many cases, also depending mainly on the moment of inertia tensor and to configuration parameters this circular motion persists. In other cases these epitrochoidal patterns slowly develop.They might be linked to harmonics of the motion. Beside the angular motion, the body also can gain spin around its dipole axis. The reason of the torque resulting on this spin is likely induction currents produced in the magnet body. Anyway, this spin is a main factor in development of epitrochoidal motions.
Here I would like to ask is there any analysis where these epitrochoidal patterns can be predicted?
I recently uploaded new experiments videos on my youtube channel where these patterns can be seen (http://youtube.com/user/sudanamaru/videos)
Attached is a picture where a epitrochoidal angular motion of a trapped magnet in air is shown by a light trace.
Keywords: Classical mechanics, magnetic levitation, magnetodynamics, magnetic bound state, maglev, driven harmonic motion, epitrochoid
I have a model using two-channel CHSH detectors where a detector can fire D+ or D- and (D+ D-) together which is indeed a correct detection but we exclude them by a rule. Also, non paired events are discarded as common practice. So only paired events having D+ or D- are counted.
Is this acceptable? This way I show the inequality can be violated using local hidden variables.
