University of Texas at Arlington

About: University of Texas at Arlington is a education organization based out in Arlington, Texas, United States. It is known for research contribution in the topics: Population & Large Hadron Collider. The organization has 11758 authors who have published 28598 publications receiving 801626 citations. The organization is also known as: UT Arlington & University of Texas-Arlington.

Double-Stator Switched Reluctance Machines (DSSRM): Fundamentals and Magnetic Force Analysis

Abstract: In this paper, a new switched reluctance machine with a double-stator configuration (DSSRM) is introduced. The proposed design is based on optimization of the motional forces, which leads to a high-grade electromechanical energy conversion process. A local examination of the force densities within and throughout a conventional switched reluctance machine (SRM) shows that the majority of the force produced is in the radial direction and does not contribute to motion. If the normal forces happen to be in the direction of motion, a larger motional force profile for SRM is yield. Based on these guidelines, a new SRM (DSSRM) is proposed. To compare energy conversion efficiency of DSSRM with that of the conventional SRM, a finite element model is constructed. An experimental prototype of the proposed machine is developed, and the phase inductance is measured. The results of our investigations indicate that the proposed geometry offers superior performance in terms of higher power density and higher percentage of the motional forces.

Flexible integrated photonics: where materials, mechanics and optics meet [Invited]

Abstract: While the vast majority of integrated photonic devices are traditionally fabricated on rigid substrates, photonic integration of both passive and active photonic devices on flexible polymer substrates has been demonstrated in recent years, and its applications in imaging, sensing and optical interconnects are being actively pursued. This paper presents an overview of the emerging field of mechanically flexible photonics, where we examine material processing and mechanical design rationales dictated by application-specific optical functionalities. The examples include semiconductor nanomembranes which serve as the key enabling material for hybrid inorganic-organic flexible active photonics, and monolithically integrated passive photonic structures fabricated from semiconductors, polymers, or amorphous materials. Technical challenges and further research opportunities related to materials engineering and device integration on flexible substrates are also discussed.

Estimating permeability using median pore-throat radius obtained from mercury intrusion porosimetry

Abstract: Mercury intrusion porosimetry (MIP) has been widely used to characterize the pore structure for various types of porous media. Several relationships between permeability and pore structure information (e.g., porosity and pore-size distribution) have been developed in the literature. This work is to introduce a new, and simpler, empirical equation to predict permeability by solely using the median pore-throat radius (r50), which is the pore-throat radius corresponding to 50% mercury saturation. The total of 18 samples used in this work have a wide range of permeability, from 10 −6 to 10 3 mD, which makes the new equation more

When accuracy hurts: Reactions of anxious–ambivalent dating partners to a relationship-threatening situation.

Abstract: Why are anxious-ambivalent individuals especially likely to have turbulent and unstable relationships'.' To help answer this question, the authors use 3 theoretical perspectives to examine how heightened empathic accuracy in a relationship-threatening situation is associated with personal and relational distress. Dating couples inferred their partners' thoughts and feelings from a videotaped interaction m which they each rated slides of opposite-sex individuals. Highly anxious—ambivalent individuals were more empathically accurate in this relationship-threatening situation: however, their self-reported thoughts and feelings indicated greater distress and less confidence in their partners and relationships. The more anxious-ambivalent women reported a slight decrease in the perceived closeness of their relationships. Four months later, more anxious-ambivalent men's relationships were more likely to have ended. These findings are discussed in terms of their theoretical and applied implications.