<div style="text-align:justify;"> The number of connected objects and therefore of IoT devices that invade our daily lives is growing exponentially. These objects are based on electronics in the form o...<div style="text-align:justify;"> The number of connected objects and therefore of IoT devices that invade our daily lives is growing exponentially. These objects are based on electronics in the form of elementary components, circuits and hybrid and complex integrated systems. Electronics must therefore respond to an exponential growth in the number of circuits, components per circuit, data transmitted, stored and processed in data centers. As a corollary, the energy consumed by operators, servers and users follows the same law of growth. In the coming years, the main challenges will be to slow down these exponential growths by improving the design and architecture of components, circuits and systems for processing and transmitting information. These challenges require the acquisition of skills based on knowledge and know-how and an increase in the pool of future competent and innovative players. This approach is part of the strategy led by the national academic training network which, by pooling the skills of trainers and technological platforms at the French level, aims to meet the needs of companies within the framework of a Recovery Plan for the Electronic Sector. After a presentation of the context and the consequences on the technical challenges, and after several approaches proposed, the actions carried out by the national network of microelectronics are detailed and illustrated with several examples of realizations and results. </div>展开更多
Vanadium nitride(VN) was deposited by DC-sputtering on a vertically aligned carbon nanotube(CNTs)template for the purpose of nano-structuration. This led to the fabrication of hierarchically composite electrodes consi...Vanadium nitride(VN) was deposited by DC-sputtering on a vertically aligned carbon nanotube(CNTs)template for the purpose of nano-structuration. This led to the fabrication of hierarchically composite electrodes consisting of porous and nanostructured VN grown on vertically aligned CNTs in a nano-treelike configuration for micro-supercapacitor application. The electrodes show excellent performance with an areal capacitance as high as 37.5 m F cm^(-2) at a scan rate of 2 mV s^(-1) in a 0.5 MK_2SO_4 mild electrolyte solution. Furthermore, the capacitance decay was only 15% after 20,000 consecutive cycles. Moreover,the capacitance was found to increase with VN deposit thickness. The X-ray photoelectron spectroscopy analyses of the electrodes before and after cycling suggest that the oxide layers that form at the VN surface is the responsible for the redox energy storage in this material. Such electrodes can compete with other transition metal nitride based electrodes for micro-supercapacitors.展开更多
文摘<div style="text-align:justify;"> The number of connected objects and therefore of IoT devices that invade our daily lives is growing exponentially. These objects are based on electronics in the form of elementary components, circuits and hybrid and complex integrated systems. Electronics must therefore respond to an exponential growth in the number of circuits, components per circuit, data transmitted, stored and processed in data centers. As a corollary, the energy consumed by operators, servers and users follows the same law of growth. In the coming years, the main challenges will be to slow down these exponential growths by improving the design and architecture of components, circuits and systems for processing and transmitting information. These challenges require the acquisition of skills based on knowledge and know-how and an increase in the pool of future competent and innovative players. This approach is part of the strategy led by the national academic training network which, by pooling the skills of trainers and technological platforms at the French level, aims to meet the needs of companies within the framework of a Recovery Plan for the Electronic Sector. After a presentation of the context and the consequences on the technical challenges, and after several approaches proposed, the actions carried out by the national network of microelectronics are detailed and illustrated with several examples of realizations and results. </div>
基金the Deanship of Scientific Research at King Saud University KSA for its funding of this research through the Research Group(Project No.RGP-283)
文摘Vanadium nitride(VN) was deposited by DC-sputtering on a vertically aligned carbon nanotube(CNTs)template for the purpose of nano-structuration. This led to the fabrication of hierarchically composite electrodes consisting of porous and nanostructured VN grown on vertically aligned CNTs in a nano-treelike configuration for micro-supercapacitor application. The electrodes show excellent performance with an areal capacitance as high as 37.5 m F cm^(-2) at a scan rate of 2 mV s^(-1) in a 0.5 MK_2SO_4 mild electrolyte solution. Furthermore, the capacitance decay was only 15% after 20,000 consecutive cycles. Moreover,the capacitance was found to increase with VN deposit thickness. The X-ray photoelectron spectroscopy analyses of the electrodes before and after cycling suggest that the oxide layers that form at the VN surface is the responsible for the redox energy storage in this material. Such electrodes can compete with other transition metal nitride based electrodes for micro-supercapacitors.
