We report diamagnetic levitation of droplets and/or particles of pico–femtoliter volume and demonstrate their on-chip storage and high precision manipulation (translation, merging, assembling and rotation). We also demonstrate a levitation based microfluidic processor to process droplets/particles with up to a billion times smaller volume than in typical microfluidic devices. The levitated part...

Transverse vibrations can induce the non-linear compression of a thin film air to levitate objects, via squeeze effect. This phenomenon is well captured by Reynolds' lubrication theory, however, same theory fails describe this levitation when fluid incompressible. In case, computation predicts no steady-state levitation, contradicting documented experimental evidence. letter, we uncover main so...

The LevitronTM is an axisymmetric top magnetized parallel to its symmetry axis. It can levitate above a specially constructed magnetic base if spun rapidly enough (and, as we found, not too rapidly). We have written a complete, coupled, nondissipative Hamiltonian system that describes the dynamics of the top. The system is twelfth order and is too complicated for general analysis. We have integ...

It is well known that one can easily design an adaptive output feedback control system for nonlinear systems satisfying the output feedback exponential passive (OFEP) conditions. In this paper, we deal with a design problem of an adaptive output feedback tracking control for systems which do not satisfy the OFEP conditions. A simple parallel feedforward compensator (PFC) design scheme for non-O...

We present experimental evidence for the levitation of extended states of a two-dimensional electron system in a magnetic field, and establish the presence of alternating regions of localized and extended states in the density of states to Landau-level filling factors ~n! as high as 80. Monitoring the Hall voltage of a modulationdoped GaAs/AlxGa12xAs heterojunction at fixed magnetic field durin...

In this article the applications of differential flatness to some industrial systems are presented. Computational methods of obtaining the flat output and the straight forward method of constructing the corresponding control law are given. Some theoretical and industrial systems are used as illustration including the third order synchronous machine model and the one degree of freedom magnetic l...

Bone loss is a negative balance course especially occurred after long-term space flight for astronauts under weightlessness [1]. Bone remodeling is a dynamic process that requires the coordinated interaction of osteocytes, osteoblasts, and osteoclasts, collaborating in basic multicellular units (BMUs) [2]. Recently,osteocytes are believed to be the mechanosensors of bone, responding to mechanic...