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Of the three primary stepper motor designs — permanent magnet, variable reluctance, and hybrid — hybrid stepper motors are arguably the most popular in industrial applications, combining the best performance characteristics of permanent magnet and variable reluctance types.Hybrid stepper motors are constructed with a rotor made of two sections, or cups, with a permanent magnet between ...
1. Research backgroundDirected energy deposition (DED), as an efficient and economical technology in the field of additive manufacturing (AM), is widely used in the manufacturing of metal materials. However, its high heating and cooling rates, as well as significant temperature gradients, often lead to rapid solidification, forming cross layer columnar grains and internal defects, seriously affect...
The Near Infrared Red Planet Search Alliance, jointly managed by the Department of Astronomy at the University of Geneva and the University of Montreal, has received cutting-edge advances in CSEM laser frequency comb technology.The laser frequency comb is a precise and stable light source designed to help the NIRPS alliance unravel the mysteries of distant planets, including the possibility of sea...
Through joint research, a team developed a 4-amino-TEMPO derivative with photocatalytic performance and successfully used it to produce high-performance and stable fiber like dye sensitized solar cells (FDSSCs) and fiber like organic light-emitting diodes (FOLEDs). This paper was published in the journal Materials and Energy Today.The developed 4-amino-TEMPO derivatives have the characteristic of ...
Recently, in order to improve the National Aeronautics and Space Administration (NASA) space communications capabilities, NASA plans to send a technology demonstration called "Integrated LCRD Low Earth Orbit User Modem and Amplifier Terminal (ILLUMA-T)" to the space station in 2023.ILLUMA-T and the Laser Communications Relay Demonstration (LCRD), launched in December 2021, will together comp...