Tài liệu Handbook of Micro and Nano Tribology P11 docx
Tài liệu Handbook of Micro and Nano Tribology P11 docx
... load, and average tilt angle of thefilm molecules were monitored during the simulation.Harrison, J.A. et al. “Atomic-Scale Simulation of Tribological and Related ” Handbook of Micro/ Nanotribology. ... caused drainage of the top layer of alkane molecules from underneath the tip, increasedwetting of the sides of the tip, “pinning” of hexadecane molecules under the tip, and deformation of thegold ... amor-phous and crystalline Si. Thus, the simulated nanoyield strength of Si depended on structure, rate of deformation, and temperature of the sample. Amorphous silicon did not show any sign of crystallizationupon...
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Tài liệu Handbook of Micro and Nano Tribology P9 pptx
... al.“Surface Forces and Microrheology of ” Handbook of Micro/ Nanotribology. Ed. Bharat Bhushan Boca Raton: CRC Press LLC, 1999© 1999 by CRC Press LLC © 1999 by CRC Press LLCLawn, B. R. and Wilshaw, ... diameters (Snook and van Megan, 1979, 1980, 1981; vanMegan and Snook, 1979, 1981; Kjellander and Marcelja, 1985a,b; Tarazona and Vincente, 1985; Hend-erson and Lozada-Cassou, 1986; Evans and Parry, ... Asperity Theory of Boundary Friction,”Wear 51, 181–192.Tabor, D. (1982), “The Role of Surface and Intermolecular Forces in Thin Film Lubrication,” in MicroscopicAspects of Adhesion and Lubrication,...
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Tài liệu Handbook of Micro and Nano Tribology P10 pptx
... deflection of a thin film:(10.17)FIGURE 10.30 Schematic of a cantilever microbeam deflected by nanoindenter loading mechanism for measure-ment of modulus of elasticity and yield strength of microbeam ... With permission.)h W bt E=−()()41323l νBhushan, B. “Nanomechanical Properties of Solid Surfaces and Thin Films” Handbook of Micro/ Nanotribology. Ed. Bharat Bhushan Boca Raton: CRC Press ... depends on the elastic and plastic properties of the material.10.3.7 Determination of Hardness and Modulus of Elasticity of Thin Films from the Composite Response of Film and SubstrateAs mentioned...
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Tài liệu Handbook of Micro and Nano Tribology P1 ppt
... “Introduction - Measurement Techniques and Applications” Handbook of Micro/ Nanotribology. Ed. Bharat Bhushan Boca Raton: CRC Press LLC, 1999© 1999 by CRC Press LLC of a 2 × 2 single-mode directional ... and Quate, 1987) or in the spatial frequencydomain (Fourier space) (Cooley and Turkey, 1965).Processed data consists of many tens of thousand of points per plane (or data set). The output of ... (1992), Meyer (1992), Marti and Amrein (1993), and Guntherodt et al. (1995) and dedicated issues of Journal of Vacuum Science Technology(B9, 1991, pp. 401–1211) and Ultramicroscopy (Vols. 42–44,...
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Tài liệu Handbook of Micro and Nano Tribology P2 ppt
... plate area A of 20 µm by 40 µm and a separation of 1 µm, one obtains a capacitance of 31 fF(neglecting stray capacitance and the capacitance of the connection leads) and a dC/dx of 3.1 × 10–8 ... TBQkdBπληω222204Pk TBQkB12ePBηMarti, O. Ò"AFM Instrumentation and Tips"Ó Handbook of Micro/ Nanotribology. Ed. Bharat Bhushan Boca Raton: CRC Press LLC, 1999© 1999 by CRC ... resonancefrequency and a spring constant of 0.1 N/m, we obtain an upper limit of the lumped effective mass meff of 0.25 mg. The quality factor of this resonance in air is typically between 10 and 100....
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Tài liệu Handbook of Micro and Nano Tribology P3 pptx
... Physics in Tribology Handbook of Micro/ Nanotribology. Ed. Bharat Bhushan Boca Raton: CRC Press LLC, 1999© 1999 by CRC Press LLC © 1999 by CRC Press LLC3.5 Chemical Analysis of SurfacesIn ... the disparity between true area of contact and apparent area of contact and the tracking of friction force with load, since the asperities and thus the true area of contactchange with asperity ... (Montei and Kordesch, 1996).Both transmission electron microscopy (TEM) and scanning transmission electron microscopy(STEM) make use of an electron beam accelerated through a potential of, typically,...
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Tài liệu Handbook of Micro and Nano Tribology P7 pptx
... A. V. and Bhushan, B. (1997), J. Mater. Res. 12, 2707–2714.With permission.) (a)(b)Bhushan, B. “Microscratching/Microwear, Nanofabrication/Nanomachining ” Handbook of Micro/ Nanotribology. ... Techniques AFM for Microscratching/Microwear and Nanoindentation • Nano/ Picoindenter 7.3 Microscratching/Microwear Studies7.4 Nanofabrication/Nanomachining Studies7.5 Nano/ Picoindentation7.6 ... measurement of mechanical properties on nano- to picoscales. © 1999 by CRC Press LLC This chapter presents an overview of microscratching/microwear, nanofabrication/nanomachining, and nano/ picoindentation...
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Tài liệu Handbook of Micro and Nano Tribology P12 doc
... 12.26 R–H curve without (a) and with (b) longitudinal bias magnetic field.Kondo, H.; et al. “Design and Construction of Magnetic Storage Devices” Handbook of Micro/ Nanotribology. Ed. Bharat Bhushan ... in thickness of about 100 nm, a protective layer of about 20 nm, and a lubricant layer of less than 4 nm.FIGURE 12.36 Micrograph of ESD-damaged MR head.FIGURE 12.37 Schematic of spin valve ... points of view which are the recording density and thereliability for head–disk friction and clash. The former depends on both of the magnetic characteristics of a recording thin film and the...
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Tài liệu Handbook of Micro and Nano Tribology P13 ppt
... springs, and impacting microvibromotors. Recently, micromirrors that consist of multiple hinged plates which Updated, expanded, and revised version of article first published in Micro/ Nanotribology ... development of microdynamic systems . These systems are based upon the science, technology, and design of moving micromechanical devices, and are a subclass of what is known in the U.S. asmicroelectromechanical ... R.S. “Microdynamic Systems in the Silicon Age” Handbook of Micro/ Nanotribology. Ed. Bharat Bhushan Boca Raton: CRC Press LLC, 1999© 1999 by CRC Press LLC © 1999 by CRC Press LLC 13 Microdynamic...
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Tài liệu Colchero, J. et al. “Friction on an Atomic Scale”Handbook of Micro and Nano Tribology P6 Handbook of Micro/Nanotribology. Ed. Bharat ppt
... Boundary Lubrication • Nanocontacts • Quartz Microbalance Experiments in Tribology 6.4 Modeling of an SFFM Resolution in SFFM • Deformation of Tip and Sample • Modeling of SFM and SFFM: Energy ... their level of knowledge. A better understanding of friction and wear could save an enormous amount of energy and money, which would be positive foreconomy and ecology. On the other hand, friction ... this wire was bent and electrochemically etched to serve as a probing tip. With a typical length of 12 mm and diameters of 0.25 and 0.5 mm, they obtained force constants of 150 and 2500 N/m, respectively,...
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