Electrically controlling the flow of charge carriers is the foundation of modern electronics. By accessing the extra spin degree of freedom (DOF) in electronics, spintronics allows for information processes such as magnetoresistive random-access memory. Recently, atomic membranes of transition metal dichalcogenides (TMDCs) were found to support unequal and distinguishable carrier distribution i...

We revisit the extremum seeking scheme whose local stability properties were analyzed in (Krstić and Wang, 2000) and propose its simplified version that still achieves extremum seeking. We show under slightly stronger conditions that this simplified scheme achieves extremum seeking from arbitrarily large domain of initial conditions if the parameters in the controller are appropriately adjusted...

We show an application of the method of extremum seeking to the problem of maximizing the pressure rise in an axial flow compressor. First we apply extremum seeking to the Moore–Greitzer model and design a feedback scheme actuated through a bleed valve which simultaneously stabilizes rotating stall and surge and steers the system towards the equilibrium with maximal pressure. Then we implement ...

among the four important factors in the educational contexts, namely, teachers, learners, textbooks and contexts, textbooks play an important role in english language teaching (elt), particularly in the english as a foreign language (efl) classroom where it provides the primary source of linguistic input. the wealth of published material for english language teaching (elt) available in the mark...

In this paper we illustrate the use of a novel extremum seeking scheme recently proposed in [2] to minimize the percentage of reflected power on the Frascati Tokamak Upgrade (FTU) experimental facility during radiofrequency heating. The paper contains an explanation of how the parameters of the extremum seeking scheme should be selected to induce desirable closedloop performance. The effectiven...

In the current stage, valley-contrasting physics is mainly rooted in nonmagnetic and/or ferromagnetic hexagonal lattices and rarely used to observe simultaneous spin valley polarization antiferromagnetic materials. this work, we propose a general scheme that can be achieved easily experiments break PT joint symmetry of structures, is, introducing an out-of-plane potential gradient realize spin–...

Fingerprint is one of the most important biometric techniques for identification and authentication, which may also reduce the complexity (cost / time) of searching data in large database. Over the past several years various methods have been proposed for fingerprint identification, on the same way, this paper propose a new efficient method for fingerprint identification based on ridge and vall...