Substrate gold-coated

Typical IRRAS spectra of polymer films deposited by the plasma polymerization of hexamethyldisilane, (CH3)3-Si-Si-(CH3)3, on metal substrates (gold-coated glass, pure iron) in a microwave reactor are shown in Figure 2.19. 

Decorative. Titanium nitride has a golden color and is used extensively to coat steel and cemented carbide substrates for watch cases, watch bands, eyeglass frames, etc. It provides exceUent scratch resistance as weU as the desired aesthetic appearance, and it replaces gold coatings used previously. 

A.STM B735, Std. Test Methodfor Porosity in Gold Coatings on Metal Substrates by NitricMcid Vapor, American Society for Testing and Materials, Philadelphia, Pa., 1992. 

FIG. 23 Schematic drawing of using microcontact printing for obtaining hydrophobic areas on a gold-coated substrate. After pattern transfer (a and b), incubation with an S-layer protein solution (c) leads to the formation of a protein monolayer on the hydrophobic areas only. 

Consequently, mirror optics are more common, in particular in the mid-IR. The mirrors used are usually aluminium- or gold-coated flat or curved substrates. While near-IR mirrors are usually protected by thin SiO-layers, in the mid-IR unprotected mirrors have to be used. Disadvantages of mirror optics are the elevated space consumption and the higher prices in comparison to refractive optics, especially comparing non-standard mirrors against non-standard lens. In total, mirror optics are so preferable to fibres and refractive optics, at least in the mid-IR, that in some technical applications they are used to replace waveguides to transport IR radiation between source, sensor head and spectrometer. 

Gold-coated substrates treated with three silanes were adhesion-tested and ESCA-analyzed. First of all, the three promoters yielded differing layer thicknesses on the wafers. For T3250, the promoted layer was 30 A or 1-2 layers in... 

Fig. 10.2. Cu(II) coverage (T) of Gly-Gly-His modified gold electrodes on mixed SAMs of MPA and MP, determined by integration of CV peaks. Mixed SAMs comprising MPA and MP were prepared by immersing the gold-coated substrates in solutions of mixtures of MPA and MP of a given fraction. In all cases, Cu(II) was accumulated at the Gly-Gly-His modified electrode at open circuit for 10 min in a 0.05 M ammonia acetate buffer solution (pH 7.0) containing 0.1 iM copper nitrate, removed, rinsed and then placed in a copper-free ammonium acetate buffer solution. Scan rate 100 mV s-1. Reproduced with permission of The Royal Society of Chemistry from Ref. [6], Copyright, Royal Society of Chemistry (2003).

Fig. 5 (a) The contact potential difference (CPD) measured between the gold-coated monolayer of polyalanine and a gold substrate as a function of temperature, (b-d) The photoelectron spectra that were measured at 297 K, 264 K, and 250 K, respectively. The signal intensity is plotted vs the photoejected electrons kinetic energy. The photon energy used is 5 eV. Separate spectra are shown for a clockwise circularly polarized (+ red curve) photon beam and a counterclockwise circularly polarized (— blue curve) photon beam, (c) The photoelectron spectrum at 264 K, where the CPD is zero (see a). Here the spectrum does not depend on laser polarization and does not exhibit a broad resonance. PHYSICAL REVIEW B 68, 115418 (2003). Copy right permission granted. 

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