Superlubricity ppt to pdf

Department of energy surface engineering definition. Powerpoint to pdf convert your ppt to pdf for free online zamzar. Luckily, our class material covers solid state physics, which is the largest branch of physics research. Observation of microscale superlubricity in graphite. With respect to the concentration below the threshold value, the existence of a shearing layer was indicated to play a significant role. Superlubricity sets in due to the progressive appearance of moire patterns resulting in a collective stickslip motion of the elevated superstructure ridges that turns into smooth solitonlike. We study the sliding of elastic solids in adhesive contact with flat and rough interfaces. Supplementary material attraction induced frictionless sliding of rare gas monolayer on metallic surfaces. Molecular origin of fast water transport in carbon nanotube. Pdf converter is a online webbased document to pdf converter software. On the understanding of the superlubricity phenomena in. Recent advances in twodimensional 2d materials, such as graphene. Superlubricity is generally classified as solid superlubricity and liquid superlubricity according to the lubricants involved at the interfaces, and is a popular research topic in tribology, which is closely linked to energy dissipation. The flake therefore slides and rotates unimpeded, a phenomenon known as superlubricity.

Zhibin lu, qunji xue, and liping wang, state key laboratoryacademyof solid lubrication, lanzhou institute of chemical physics, chinese. This free online converter allows to convert various file formats doc, docx, xls, ppt, jpg, png. Generally, the other fullerenes 0d, such as c 76, c 80, c 240, etc, are synthesized from larger numbers of carbon atoms. Superlubricity mechanism of diamondlike carbon with. Liu z1, yang j, grey f, liu jz, liu y, wang y, yang y, cheng y, zheng q. Convert and create pdf from various types of files like word doc, excel xls, powerpoint ppt. The nonlinear nature of friction at the nanoscale has sparked intense experimental and theoretical interest 1,2,3. Superlubricity, a recentlydiscovered effect, has been observed in graphite. Controlling friction and reducing wear of moving mechanical systems is important in many applications, from nanoscale electromechanical systems to largescale car engines and wind turbines. Achieving superlubricity in dlc films by controlling bulk. Convert your pdfs to powerpoint presentations free and easy to use. New achievements in superlubricity from international. However, all experimental structural superlubricity has been obtained on the microscale or nanoscale, and predominantly under high vacuum. The electrostatic field to calculate the force exerted by some electric charges, q1, q2, q3.

The role of nano technology in engineering applications. Ppt supercapacitor powerpoint presentation free to. Superlubricity is a frictionless tribological state sometimes occurring in. Superlubricity mechanism of diamondlike carbon with glycerol. Please checkout my entire year physical science materials. Superlubricity in centimetreslong doublewalled carbon. Use soda pdfs online converter tool and convert powerpoint to pdf for free.

However, when the depth of the optical lattices wells was tuned to a specific value, superlubricity kicked in, and the particles could slide upon the application of an arbitrarily small force. Graphene and other twodimensional materials have been proved to be able to offer low friction. H thin films have a unique combination of properties that are fundamental in mechanical and electromechanical devices aimed at energy efficiency issues. A very small amount of frictional energy would still be dissipated. Thus, the synergetic effect of sufficient adsorption of molecules and the unique shear rheology of the pag aqueous solution were essential to achieve superlubricity. Does a simple calculation then goes into the relationship of density sinking and floating.

Recently, superlubricity has been observed during sliding of graphite on graphite. In the powerpoint preferences dialog box, click general. Molecular origin of superlubricity between graphene and a highly hydrophobic surface in water. Ppt to pdf converter convert your powerpoint to pdf online free. Significant advancements in both experimental studies and theoretical analysis have been made regarding superlubricity in the past two decades. No watermarks just converting pdf to ppt in seconds. The term superlubricity was originally intended to describe the state of ultralow friction achieved when two crystalline solid surfaces with incommensurate contact slide over each other.

The literature brings a wealth of information about the ultralow friction superlubricity mechanism in a. Circuit theory i a large complex circuits simplify circuit analysis circuit theorems. A focus of much of this research is on achieving superlubricity 4,5,6, a term. Instantly convert text documents, presentations, spreadsheets and images to pdf format with this free online pdf converter. Ali erdemir is an argonne distinguished fellow and senior scientist at argonne national laboratory in illinois. Make ppt and pptx slideshows easy to view by converting them to pdf. Hirano and shinjo introduced the term superlubricity for that frictionless state of motion. Constructive interference the waves reinforce each other destructive interference the waves cancel each other. Supercapacitorspptpdfdocpresentation seminar report. We consider the dependence of the sliding friction on the elastic modulus of the solids. This principle states that the interaction between any two charges is completely unaffected by the presence of other. No file size restrictions, no ad watermarks just a free online tool for creating pdfs from your ppt slides.

Accordingly, multiple efforts are dedicated to design materials and surfaces for efficient friction and wear manipulation. Superposition principle the displacement due to two waves that pass through the same point in space is the algebraic sum of displacements of the two waves. Presentations ppt, key, pdf logging in or signing up. Superlubricity and new superlubricant materials made by. The data suggest that the onset of superlubricity can be described as a phase transition, as predicted by the socalled aubry theory. The superlubricity state of carbonaceous fillers on. Learn how to easily convert a microsoft powerpoint. Goes through the density formula including the density pyramid.

The raman spectrum together with a modified linear chain model indicate a twoordersofmagnitude decrease in th editors choice. Seminar report in ms word, pdf and power point presentation for applied electronics, computer science, biotechnology, electronics and telecommunication, instrumentation, electrical, civil, chemical, mechanical, information technology and automobile engineering students. Boussinesq approximation lecture7 free download as powerpoint presentation. Investigations on the mechanism of superlubricity achieved. In this case, it permanently stores the address of the person creating the contract. Many authors have justified the reduction in polymer viscosity due to the slipping interlayers of the gr, gro, and go.

Download your new pdf and save it to your computer. Scribd is the worlds largest social reading and publishing site. Find materials for this course in the pages linked along the left. Various approaches to achieving this state are considered in a broad sense, including structural superlubricity, superlubricity via normal force control, and contact actuation, as well as thermolubricity, liquid superlubricity, and quantum lubricity. What is a vanishing friction level is not clear, which makes the term superlubricity quite vague. Superlubricity is the name given by physicists to the phenomenon where special materials achieve extremely low friction coefficients ranging between 0. Thermal physics and materials glossary of terms absolute kelvin temperature scale is based on fixing t of the triple point for water a specific t 273. Tailoring the mechanical properties of 2d materials and. It is very well known that the incorporation of fillers into polymers increases their viscosity in a molten state. For elastically hard solids with planar surfaces with incommensurate surface structures we observe extremely low friction superlubricity, which very abruptly increases as the elastic modulus decreases. Conclusion maccaferri pa6 is an addition to the range giving clients more choice maccaferri pa6 is not designed to replace pvc or hdpe coated wire mesh products it offers greater performance in those situations when pvc. As an ad hoc definition, a kinetic coefficient of friction less than 0. Frictions vanishing act jean michel martin is an emeritus professor of surface chemistry and tribology at the university of lyon in france. Follow these instructions to set the print quality of the pdf.

Macroscale superlubricity enabled by graphene nanoscroll formation article pdf available in science 3486239 may 2015 with 1,491 reads. It is shown the concept of superlubricity of combined coatings can be effec. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Many businesses and students that have to present something will almost always do their presentation using microsoft powerpoint. This definition also requires further discussion and clarification. It is found that the wear on the friction surfaces mainly occurs at the beginning of the test and nearly disappears after the friction coefficient. Saving your presentation as a pdf lets anyone view it, even if they dont have powerpoint. Mechanism of superlubricity conversion with polyalkylene. The work describes a ultralow friction phenomenon due to application of mos 2 nanoparticle coatings results in ultralow friction coefficients in ambient atmosphere. Fullerenes are comprised of between 28 and 1500 carbon atoms that form spherical structures. Ppt to pdf convert powerpoint to pdf online for free.

Approaches for achieving superlubricity in twodimensional. Save powerpoint presentations as pdf files office support. Superposition principle university of california, san diego. The existence of this effect with carbon coatings, which can be explained by quantum physics, was first referred to in theoretical work in. Superlubricity is the state in which two contacting surfaces exhibit no resistance to sliding. Download as ppt, pdf, txt or read online from scribd. Density concept presentation powerpoint mass volume by. Fullerene c 60 is a carbonbased molecule that is spherical in morphology and made up of carbon atoms held together via sp 2 hybridization. When the flake is in registry with the substrate stickslip motion and large friction are observed. Supercapacitor is the property of its rightful owner. When the conversion is done, your ppt, pptx, and pdf files will be automatically deleted.