Micromachining Techniques for Fabrication of Micro and Nano Structures Part 6 docx

Handbook of Micro and Nano Tribology P4

Handbook of Micro and Nano Tribology P4

... evaluated for experimentally observed values of D = 1.38 (Majumdar and Bhushan, 1990) and φ = 0.05 (Bhushan and Doerner, 1989) for disk type C, and an assumed value for G * = 10 –10 for curve ... combinations, and therefore for a particular value of V = constant (horizontal line) it is possible to have different asperity base areas. For each combination of l...
Ngày tải lên : 18/10/2013, 09:15
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Handbook of Micro and Nano Tribology P8

Handbook of Micro and Nano Tribology P8

... overview of lubrication studies of polar and nonpolar lubricants and Lang- muir–Blodgett and chemically grafted films, using atomic force/friction force microscopy. 8.2 Nanodeformation, Adhesive Forces, ... 90, 5 861 –5 868 . O’Shea, S. J., Welland, M. E., and Rayment, T. (1992), “Atomic Force Microscope Study of Boundary Layer Lubrication,” Appl. Phys. Lett. 61 , 2240–2...
Ngày tải lên : 18/10/2013, 09:15
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Handbook of Micro and Nano Tribology P14

Handbook of Micro and Nano Tribology P14

... Koinkar, V.N., 1994, J. Appl. Phys. 75, 5741–57 46. With permission.) Bhushan, B. Micro/ Nanotribology and Micro/ Nanomechanics of Magnetic ” Handbook of Micro/ Nanotribology. Ed. Bharat Bhushan Boca ... Bhushan (1994a–c), Koinkar and Bhushan (1996a,b, 1997a,b), and Sundararajan and Bhushan (1998). Koinkar and Bhushan (1996a,b) and Poon and Bhushan (1995a,b) reported th...
Ngày tải lên : 18/10/2013, 09:15
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Handbook of Micro and Nano Tribology P16

Handbook of Micro and Nano Tribology P16

... LLC 16 Micro/ Nanotribology and Micro/ Nanomechanics of MEMS Devices Bharat Bhushan 16. 1 Introduction Background • Tribological Issues 16. 2 Experimental Techniques Description of Apparatus ... Apparatus and Test Procedures • Test Samples 16. 3 Results and Discussion Micro/ Nanotribological Studies of Virgin, Coated, and Treated Silicon Samples • Mic...
Ngày tải lên : 25/10/2013, 12:15
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Handbook of Micro and Nano Tribology P5

Handbook of Micro and Nano Tribology P5

... force upon separation of the tip and sample is often referred to as the pull-off force. Unfortunately, measuring the pull-off force does not directly give the work of adhesion. The pull-off force ... Bowden and Tabor (1950, 1 964 ) understood the friction and wear of metal–metal sliding in terms of the plastic deformation of asperity contacts. 5.5.2 Outlook Part of the exc...
Ngày tải lên : 09/11/2013, 03:15
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Tài liệu Handbook of Micro and Nano Tribology P9 pptx

Tài liệu Handbook of Micro and Nano Tribology P9 pptx

... Methods for Measuring Static and Dynamic Surface Forces Adhesion Forces • Force Laws • The Surface Force Apparatus and the Atomic Force Microscope 9.3 van der Waals and Electrostatic Forces ... Fluctuation Forces: Forces between Soft, Fluidlike Surfaces 9 .6 Hydration Forces: Special Forces in Water and Aqueous Solutions Repulsive Hydration Forces • Attractive Hydrophobic...
Ngày tải lên : 17/12/2013, 11:15
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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

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

... without approximations. 6. 4.2 Deformation of Tip and Sample The deformation of tip and sample is fundamental to the adhesion and friction of any contact, including the special case of an SFM or SFFM ... of holes. With higher forces, we observe that particles of hydrocarbons are pulled out and sheared out of the scanning area while the fluorocarbons remain undeformed. Co...
Ngày tải lên : 25/12/2013, 23:18
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Tài liệu Handbook of Micro and Nano Tribology P10 pptx

Tài liệu Handbook of Micro and Nano Tribology P10 pptx

... Micro/ Nanoscratch Technique 10 .6 Nanoindentation and Microscratch Techniques for Adhesion Measurements, Residual Stresses, and Materials Characterization of Thin Films Adhesion Strength and ... 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...
Ngày tải lên : 25/12/2013, 23:18
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Tài liệu Handbook of Micro and Nano Tribology P1 ppt

Tài liệu Handbook of Micro and Nano Tribology P1 ppt

... atomic layers). These structures are generally lubricated with molecularly thin films. Micro- and nanotribological techniques are ideal for studying the friction and wear processes of micro- and nanostructures. ... Role of Micro/ Nanotribology in Magnetic Storage Devices, MEMS, and Other Microcomponents References In this chapter, we first present the history of macrotri...
Ngày tải lên : 23/01/2014, 04:20
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Tài liệu Handbook of Micro and Nano Tribology P2 ppt

Tài liệu Handbook of Micro and Nano Tribology P2 ppt

... square pulse of width 12 between 310 and 3 56, a triangle of period 40 between 3 56 and 3 96, a triangle of period 20 between 400 and 420, a triangle of period 12 between 430 and 442, and, finally, ... cast the normal force is simply the average of the forces in the forward and backward direction. The force form the front, F Fr , is the difference of the forces measure...
Ngày tải lên : 27/01/2014, 14:20
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