Glasses surface features

Figure 17. Chronology of improvement in light transmission of glasses over periods of history leading to introduction of photonics technology in the information age. Polymer protection of glass surfaces is an essential present feature.

Fig. 21 a Fluorescence images of xCP-immobilized fluorescein labeled ONDs on a glass surface. The pattern size is limited only by the use of manufactured molds with the desired feature size, b AFM images of stamped 1 p.m lines of 20-bp ONDs (left) and 500bp PCR fragments (right) on mica substrates [79]. Reprinted with permission... 

Icenhower, J. P., Luttge, A. et al. 2003. Results of vertical scanning interferometry (VSI) of dissolved borosilicate glass Evidence for variable surface features and global surface retreat. Materials... 

The subtraction envelope obtained by ramping the t-butylamine from the silane-treated surface (Fig 4A, solid curve) has features above 120°C that are characteristic of methyltrimethoxysilane, and are probably dependent on all the details of glass surface chemistry, silane concentration in the size, and mode of deposition. These features are not thermally stable, as shown by the desorption envelope from a second ramp (Fig. 4B). The chemisorptive capacity of silanized glass for the Lewis acid is also severely mitigated by the first ramp (Fig. 4C). 

Another noteworthy feature of the polymeric silane depicted in Fig. la is that the silane chains on the polymer backbone carry dialkoxy groups. In comparison with monomeric silanes which carry trialkoxy groups, these polymeric silanes are claimed to offer superior substrate reactivity and to provide further performance improvements [4, 5]. A probable explanation seems to be the difference in the number of siloxane bonds that can possibly be formed with the glass surface by the two types. 

To summarize, the model used in this paper captures many important features of protein structure and dynamics and is indeed seen to reproduce many of the general trends observed in SM-FRET experiments. At the same time, we have also observed several intriguing discrepancies between the model predictions and the experimental results. One possibility is that these discrepancies originate from shortcomings of the model. For example, the SM-FRET measurements reported in Refs. [30, 33] were performed on a coiled-coil that was immobilized on a positively charged amino-silanized glass surface and involved charged dye molecules. This implies that the protein-surface and donor-acceptor interactions may be dominated by electrostatic forces. Our... 

Fig. 8.26. Haze as function of RMS roughness <5rms for different textured TCO front contacts according to Lechner et al. [145]. The TCO films were prepared under different conditions and consist of surface features with differing distribution, size, and shape. The TCOs labeled series A, B, and M are texture etched ZnO Al films, while Asahi U is a high quality laboratory type Sn02 F covered glass [71], More details of the corresponding TCO films can be found in the original papers...

Note that the velocity of craze tip advance is very sensitive to the energy of the surface being created (Vq decreases strongly as F increases since 10 < n < 20 for most polymer glasses ). This feature will be invoked later to explain the important effect of entanglements on the stresses required for crazing. 

Two articles deserve special mention. Ogg has presented NMR spectra of anhydrous liquid ammonia and liquid anunonia containing an estimated 10 mole fraction of water (1539). The triplet spectrum obtained for dry NH was attributed to spin-spin interaction between the protons and the nucleus. The presence of the presumed trace of HjO (attributed to moisture adsorbed on glass surfaces) causes coalescence of the features of the triplet into a singlet. Ogg attributes the disappearance of the spin-spin structure to the rapid transfer of protons between ammonia molecules via the reaction H2O -H NHs = OH" + Although this interpretation is not well established, the article points out a promising line of study. (See also 212.)... 

Fig. 3.38 Contact mode AFM height image of egg PC vesicles adsorbed on glass captured with an imaging force of 30 pN left) and 50 pN right). The halo in the fast scan direction right to left) indicates that the tip can no longer track the surface features accurately, when imaging force and noise of the deflection signal become comparable ( 30 pN in this case). When the imaging forces are increased to 50 pN, the surface is tracked better. The asymmetry of the features can be explained by tip convolution effects (asymmetry of the probe tip) [87]...

To investigate the EL features of the structures, an ITO electrode formed onto glass surface was mechanically pressed onto top surface of PAA filled with xerogels (Fig. 1 a), the silicon substrate served as the second electrode. PL measurements were performed using Ar ion cw laser operating at X=300 nm for excitation. 

The speetrum of the emission from the APDs extends from 600 to 1,000 nm [299]. Therefore, decoupling often cannot be achieved by filters. The only way to get reasonable results is with a carefully designed optical system. Features to be strictly avoided are lenses focusing the emission of one diode into the other, and glass surfaces reflecting the emission into the other diode, as shown in Fig. 5.106. 

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