Two studies on carbon nanotubes by CEA DRECAM researchers have just been published in Physical Review Letters and Applied Physics Letters. The first study presents an innovative and experimentally verified theoretical law to predict and characterize the deformation of a carbon nanotube subject to an electrical field. The second study applies this knowledge to produce a nano-switch using innovative dimensioning and positioning control techniques.
MEMs technologies (microelectromechanical systems) combine mechanical, optical, electromagnetic, thermal and fluidic concepts with electronics to produce chip-based integrated systems performing sensor and/or actuator functions. MEMs are currently used in a large number of sectors such as the automobile industry (airbag sensors), the computer peripherals industry (inkjet printer cartridges), and also the defense, medical and space industries. These technologies accompany the advances in microelectronic miniaturization. For sizes less than one micron, the term NEMs is used (nanoelectromechanical systems). However, below a certain size, entirely different production techniques must be employed, one the one hand due to preeminent surface effects very difficult to control, and the other because the physics of the phenomena is susceptible to change in the quantic realm.
Carbon nanotubes are excellent candidates for the production of NEMs. The assembly of nano-objects is an elegant solution to the increasing difficulty of machining massive materials at nanometric scale. A few examples of carbon nanotube NEMs have been published in the literature over the past 4 or 5 years. However, the development of this field of research was limited by the absence of dimensioning control tools for carbon nanotube NEMs.
Pascal Newton | alfa
Protecting the power grid: Advanced plasma switch for more efficient transmission
17.08.2018 | DOE/Princeton Plasma Physics Laboratory
Unraveling the nature of 'whistlers' from space in the lab
15.08.2018 | American Institute of Physics
New design tool automatically creates nanostructure 3D-print templates for user-given colors
Scientists present work at prestigious SIGGRAPH conference
Most of the objects we see are colored by pigments, but using pigments has disadvantages: such colors can fade, industrial pigments are often toxic, and...
Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...
Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.
When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...
Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.
Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....
Proteins must be folded correctly to fulfill their molecular functions in cells. Molecular assistants called chaperones help proteins exploit their inbuilt folding potential and reach the correct three-dimensional structure. Researchers at the Max Planck Institute of Biochemistry (MPIB) have demonstrated that actin, the most abundant protein in higher developed cells, does not have the inbuilt potential to fold and instead requires special assistance to fold into its active state. The chaperone TRiC uses a previously undescribed mechanism to perform actin folding. The study was recently published in the journal Cell.
Actin is the most abundant protein in highly developed cells and has diverse functions in processes like cell stabilization, cell division and muscle...
17.08.2018 | Event News
08.08.2018 | Event News
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17.08.2018 | Life Sciences
17.08.2018 | Event News
17.08.2018 | Materials Sciences