Manipulation of micro-sized particles and biological cells using dielectrophoresis (DEP) is an emerging technique in MEMS and nano technology[3]. This paper presents an exact solution of dielectrophoretic motion of a polarized particle in the vicinity of interdigitated bar electrodes fabricated on planar insulating surfaces which have been widely employed in conjunction with hydrodynamic forces...

This paper presents a nonlinear servo-control design based on Fuzzy model for safer and comfortable levitation of an electromagnetic suspension stage consisting of triple arrangement of hybrid electromagnets, since conventional linear control design can give satisfactory results only around a specified linearization point for tiny displacements. The authors have proposed compensation principle ...

Levitated diamond nanocrystals with nitrogen-vacancy (NV) centres in high vacuum have been proposed as a unique system for experiments in fundamental quantum mechanics, including the generation of large quantum superposition states and tests of quantum gravity. This system promises extreme isolation from its environment while providing quantum control and sensing through the NV centre spin. Whi...

The alien hand syndrome (AHS) usually consists of an autonomous motor activity perceived as an involuntary and purposeful movement, with a feeling of foreignness of the involved limb, commonly associated with a failure to recognise ownership of the limb in the absence of visual clues. It has been described in association to lesions of the frontal lobes and corpus callosum. However, parietal dam...

We report an experimental highdelity system for making psychophysical measurements on human operators performing real, virtual, and real-remote 3D haptic manipulation tasks. Operators interact with task environments through six-degree-of-freedom (6-DOF) Lorentz magnetic levitation haptic devices. This arrangement allows the operator to exert and experience real, virtual, and real-remote forces/...

This work proposes a systematic two-degree freedom control scheme to improve the reference input tracking and load disturbance rejection for an unstable magnetic levitation system. The proposed control strategy is a two-step design process. Firstly, a proportional derivative controller is introduced purposely to get the desired set-point response of the magnetic levitation system and then, an i...

Atmospheric parameters (Teff , log g and log nHe nH ) are derived for 42 hot horizontal branch (HB) stars in the globular cluster NGC6752. For 19 stars Mg II and Fe II lines are detected indicating an iron enrichment by a factor 50 on average with respect to the cluster abundance whereas the magnesium abundances are consistent with the cluster metallicity. This finding adds to the growing evide...

In this paper a fuzzy levitation controller for a one degree of freedom maglev application is designed and its performance is compared with the performance of a state controller. The comparison is based on both simulation and measurement results. The maglev application is a levitation/propulsion head of an autonomous transportation vehicle with a nominal air gap value of 2.5 mm. First a nonline...

Atmospheric parameters (Teff , log g and log nHe nH ) are derived for 42 hot horizontal branch (HB) stars in the globular cluster NGC 6752. For 19 stars Mg II and Fe II lines are detected indicating an iron enrichment by a factor 50 on average with respect to the cluster abundance whereas the magnesium abundances are consistent with the cluster metallicity. This finding adds to the growing evid...

The oscillating drop method has been widely used for surface tension measurements of liquids at high temperatures such as molten metals. An experimental device that permits developed IRDL. This relies on aerodynamic levitation the sample to be contactless and acoustic excitation make it oscillate its resonance frequency, which is related with Rayleigh’s equation. Beforehand, experimentally, a l...