current status of micro and nano structured optical fiber sensors

. trends. Conclusions The preparation and operando investigation of the two polymorphic forms of the nanosized - In 2 O 3 brought novel and interesting results: the high sensitivity to ozone of the rh - In 2 O 3 films,. analysis of the interplay of the microscopic parameters allowed to additionally explain the trends of the samples when operated in regions situated outside of the standard mode...

Ngày tải lên: 19/03/2014, 16:47

... between predictions of fractal model and experiments of Yamada et al. (1978). FIGURE 4.34 Comparison among predictions of the fractal model, the GW model, and experiments of Bhushan and Dugger (1990) ... roughness of regime 2 and one can again use the relation of Equation 4.3.25 for a single fractal behavior. Note that in such a case, σ is only related to G 1 and D 2 of...

Ngày tải lên: 18/10/2013, 09:15

... dense films of long-chain molecules. Bhushan et al. (1995b,c) conducted micro- and macroscale friction and wear studies on single-grafted and double-grafted octodecyl (C 18 ) and LB films and their ... single-grafted, LB, and Au films and is comparable with that of SiO 2 film. The C 18 double-grafted films can withstand much higher normal force of 40 µN as compar...

Ngày tải lên: 18/10/2013, 09:15

... Ruan and 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 that rms roughness and friction ... Majumdar and Bhushan (1991) and Bhushan and Majumdar (1992) have reported relationships for cumulative size distribution of the contact spots, portions of th...

Ngày tải lên: 18/10/2013, 09:15

... diamond tip of radius of 100 nm. TABLE 16.3 Surface Roughness and Coefficients of Micro- and Macroscale Friction of Selected Samples Material rms Roughness (nm) Coefficient of Microscale ... at a normal load of 70 µN with a depth of indentation about 3 nm and hardness values of 15.8 and 19.5 GPa, respectively (Bhushan and Koinkar, 1994). Hardness values...

Ngày tải lên: 25/10/2013, 12:15

... chemical and mechanical properties of the surface and near-surface region of the tip and sample determine the adhesive behavior. A compliant tip–sample system of large curvature radius and large ... understanding of friction, lubrication, and wear? The interpretation of surface forces and adhesion measurements is challenging. Even if you under- stand your instrumental ar...

Ngày tải lên: 09/11/2013, 03:15

... diameters (Snook and van Megan, 1979, 1980, 1981; van Megan and Snook, 1979, 1981; Kjellander and Marcelja, 1985a,b; Tarazona and Vincente, 1985; Hend- erson and Lozada-Cassou, 1986; Evans and Parry, ... Berlin. McClelland, G. M. and Cohen, S. R. (1990), Chemistry and Physics of Solid Surfaces VIII, pp. 419–445, Springer, Berlin. McGuiggan, P. and Israelachvili, J. N. (199...

Ngày tải lên: 17/12/2013, 11:15

... 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, ... image and the lateral force in the case of purely conservative forces. For a detailed understanding of the lateral force and its relation to the normal force and...

Ngày tải lên: 25/12/2013, 23:18

... 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 Substrate As mentioned ... properties of surface layers of bulk materials and of ultrathin coatings. The nanoindentation apparatus continously monitors the load and the position of the inden...

Ngày tải lên: 25/12/2013, 23:18

. (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,. and Quate, 1987) or in the spatial frequency domain (Fourier space) (Cooley and Turkey, 1965). Processed data consists of many tens of thousand of points per plane (or data set). The output of. tunnel...

Ngày tải lên: 23/01/2014, 04:20