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ELECTROPHORESIS, Volume 46, Issue 16, Page 1195-1220, August 2025.ABSTRACT The first patent to describe dielectrophoresis (DEP) as a means and process to separate particles from a mixture was granted by the US Patent Office to Henry Stafford Hatfield in 1924. The novel methods of sample preparation and designs of electrode geometry covered by the patent's disclosures and claims describe the basis for most present‐day
Ronald Pethig
wiley +1 more source
Performance tests of a cryogenic hybrid magnetic bearing for turbopumps [PDF]
Experiments were performed on a Hybrid Magnetic Bearing designed for cryogenic applications such as turbopumps. This bearing is considerably smaller and lighter than conventional magnetic bearings and is more efficient because it uses a permanent magnet ...
Brown, Gerald V., Dirusso, Eliseo
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Repulsive force support system feasibility study [PDF]
A new concept in magnetic levitation and control is introduced for levitation above a plane. A set of five vertical solenoid magnets mounted flush below the plane supports and controls the model in five degrees of freedom.
Abdelsalam, M. K. +3 more
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National Educators' Workshop: Update 1988. Standard Experiments in Engineering Materials Science and Technology [PDF]
Presented here is a collection of experiments presented and demonstrated at the National Educators' Workshop: Update 88, held May 10 to 12, 1988 at the National Institute of Standards and Technology (NIST), Gaithersberg, Maryland.
Gardner, James E., Jacobs, James A.
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Magnetic bearing turbomachinery case histories and applications for space related equipment [PDF]
The concept of magnetic levitation is not a new one and can be easily traced back to the 1800's. It is only recently, however, that the congruous technologies of electronic control systems, power electronics, and magnetic materials have begun to merge to
Weise, David A.
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Nonlinear dynamics of attractive magnetic bearings [PDF]
The nonlinear dynamics of a ferromagnetic shaft suspended by the force of attraction of 1, 2, or 4 independent electromagnets is presented. Each model includes a state variable feedback controller which has been designed using the pole placement method ...
Hebbale, K. V., Taylor, D. L.
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Analysis of a passive microforce sensor based on magnetic spings and upthrust buoyancy.
, 2011 International audienceThis paper is focused on the design and modeling of a new micro and nano force sensor using magnetic springs. The force sensitive part is a macroscopic horizontal rigid platform used as a oating seismic mass.
Abadie, Joël +2 more
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NIST torsion oscillator viscometer response: Performance on the LeRC active vibration isolation platform [PDF]
Critical point viscosity measurements are limited to their reduced temperature approach to T(sub c) in an Earth bound system, because of density gradients imposed by gravity.
Berg, Robert F., Grodsinsky, Carlos M.
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Experimental investigation of noise annoyance caused by high-speed trains [PDF]
, 2005 The observed difference in perceived annoyance caused by train and highway noise at the same averaged noise level, has led to the introduction of the ‘railway bonus’.
BERGLUND, B +5 more
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Experimental verification of an eddy-current bearing [PDF]
A new type of electromagnetic bearing was built and tested. It consists of fixed AC-electromagnets in a star formation surrounding a conducting rotor. The bearing works by repulsion due to eddy-currents induced in the rotor.
Nikolajsen, Jorgen L.
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