Articles techniques et présentations

Laser-Heated Pedestal Growth (LHPG) is a crystal growth technique that employs a focused laser beam to melt a source material, creating a molten zone that is precisely controlled to produce high-quality single crystals. This method is particularly advantageous for growing crystals with ... En savoir plus

High power CO2 lasers have been the workhorses for sheet metal cutting, welding and many more applications in materials processing during the past decades. Even though a significant replacement by fiber coupled lasers takes place, there are still many applications that benefit from the ... En savoir plus

The storage of CO2 in the sub-surface is seen as a technology that can contribute to the generally accepted goal of a de-carbonized society. As real field experiments are hardly feasible, many current studies utilize the capabilities of numerical modelling. Concerning the practical ... En savoir plus

The current general context for green production and decarbonation prompts considering alternative solutions to produce high added value byproducts from gas decomposition without producing CO2. Steam Reforming or Combustion processes, widely applied in Industry, need H2O or O2 to ... En savoir plus

Dissolution of calcite plays an important role in various processes such as enhanced oil and gas recovery, CO2 sequestration, and groundwater transport for the drinking water production. Dissolution rates predicted by pore scale and continuum scale models are often faster than the ... En savoir plus

Photosynthesis can be defined as the conversion of solar energy into chemical energy. In green plants, this applies to the conversion of CO2 into organic compounds. The energy stored in these compounds can later be used to supply energy to run physical and chemical processes in plant ... En savoir plus

Carbon dioxide levels are increasing faster than in hundreds of thousands of years due to fossil fuels burning. A serious worldwide interest is growing towards the field of CO2 valorization as a step in transitioning away from fossil fuel economy at the same time of decreasing CO2 ... En savoir plus

Organic-rich shale resources remain an important source of hydrocarbons considering their substantial contribution to crude oil and natural gas production around the world. Moreover, as part of mitigating the greenhouse gas effects due to the emissions of carbon dioxide (CO2) gas, ... En savoir plus

In this paper, a carbon dioxide sensor is introduced. At present many CO2 sensors are available, but they all required power in the order of few watts, therefore they are not suitable for long term unattended operation. This paper gives the brief description of CO2 sensor modeling using ... En savoir plus

In the context of climate change mitigation, hydrogen represents a promising and versatile energy vector. Water electrolysis powered by renewable energy offers a sustainable method for hydrogen production, with efficiency gains achievable at the higher operating temperatures of Solid ... En savoir plus