Articles techniques et présentations

在半导体增材制备的过程中，磁控溅射，使用电离的氩离子轰击靶材形成等离子气团，进而扩散转移到晶圆表面是一种常见的增材加工工艺。许多的MEMS应用和先进封装技术中常会通过偏转靶材和衬底的相对夹角进行溅射镀膜，从而形成特殊的台阶覆盖。传统来说，上述过程的工艺仿真（TCAD）往往是以变形网格耦合定向的靶材通量实现镀膜形貌的仿真；然而，变形网格的方法难以仿真封闭微腔（不连通的新域）形成，定向的靶材流体通量忽略了镀材的扩散运动在背向镀膜侧的镀材沉积。 使用COMSOL Multiphysics，我们提出了一种求解等离子体/稀释气体的流体场通量 ... En savoir plus

Air Ionization provides an excellent opportunity to improve indoor air quality (IAQ) for commercial buildings. Our ultimate goal is to develop guidelines based on a combined experimental and analytical approach for implementing air ionization (AirI) systems into commercial buildings, ... En savoir plus

COMSOL has been used to model the propagation of electromagnetic waves in fusion plasmas. For the first time, a finite element method has been used to solve the wave propagation for realistic fusion plasma parameters in the lower hybrid and ion cyclotron frequency ranges. Moreover, for ... En savoir plus

The research in magnetic confinement fusion is carried out through electromagnetic machines, with a toroidal geometry, where a hot plasma of heavy hydrogen isotopes (deuterium and tritium) is contained in a vacuum vessel. Due to the very high temperatures reached by the plasma, strong ... En savoir plus

In circuit breakers, short-circuit breaking involves extreme conditions linked to the presence of an intense electric arc. This requires the use of specific electrical contacts consisting of a contact tip and its support. SCHNEIDER ELECTRIC uses the resistance sintering technique for the ... En savoir plus

Microplasmas at atmospheric pressure are required in many applications, where treatments in normal ambient, with spatial resolution, are important. The interest on such miniaturized sources has increased due to the availability of a new generation of microwave sources based on high power ... En savoir plus

THz is an emerging technology which can be strongly utilized in the field of spectroscopy, communication, biomedical, non-destructive evaluation (NDE), food industry and many more fields [1-2]. It covers the frequency range from 0.1-10 THz [2]. At THz regime, to achieve the high output ... En savoir plus

In the manufacturing of high voltage electrical equipment, an important step to guarantee a right dielectric design can be carried out through the prediction of a possible occurrence of the corona effect or, in the worst case, of dielectric breakdown, preferably in early stages. For this ... En savoir plus

The simplicity, reliability and low costs of electro-mechanical breakers have made them the workhorse for the interruption of low voltage short-circuit currents. In the presence of a short circuit, the contacts of the breaker heat up, and a bridge of molten metal forms between the pair ... En savoir plus

Ultra-thin flexible glass with thicknesses of 100 µm or below is bendable and has superior surface properties (Figure 1). The current use in foldable displays of mobile devices gives an idea of the range of possible applications [1]. However, it requires dedicated handling and processing ... En savoir plus