Silicon disks

Figure 18 [28] shows the variation of the particle speed and the potential energy of the silicon wafer in the collision process. The dashed line means the speed of the particle in the vertical direction and the black one indicates the variation of potential energy of the silicon disk. When the particle penetrates into the wafer surface, its vertical speed becomes lower and lower. Once the particle reaches the deepest position, the speed of the particle becomes zero and the potential energy of the silicon wafer increases to the highest one, and... 

Vials. 0.3 mL and 2 mL amber borosilicate glass with conical shaped reservoir and screw caps lined with Teflon-faced silicone disks. 

Infrared spectra were recorded on a Nicolet MX-1 spectrometer with a resolution of 2 cm-. Activation and adsorption of probes were performed on cloverite deposited on a silicon disk of 100 pm thickness. This technique allows one to study the spectra in the whole 4000-400 cm wavenumber range. Pyridine was introduced at room temperature (r.t.) then immediately evacuated at the same temperature. Stepwise desorption was performed up to 723 K. NH3 and H2O were introduced in small quantities then under a 250 Pa pressure at room temperature. CO and C2H4 were adsorbed at 100 K and 200 K respectively on an activated self-supported wafer. 

Figure 1. Spectrum of cloverite supported on a silicon disk after calcination under O2 and evacuation at, a) 443 K, b) 573 K, c) 673 K, d) 723 K. The spectrum of quinuclidine adsorbed at 573 K on HY is inserted.

Figure 5. NH3 adsorption on activated cloverite supported on a silicon disk. Spectra obtained by either b) introducing 3 iimol of NH3, c) followed by evacuation at 423 K or d) introducing a large amount of NH3 (Pe 250 Pa), e) followed by evacuation at 423 K. Comparison with the spectrum of the activated cloverite (a).

Osaka T (2005) Electroless-deposited soft magnetic underlayer on silicon disk substrate for double-layered perpendicular magnetic recording media. J Magn Magn Mater 287 292-297... 

Removal of layers of highly viscous abietic acid/alcohol mixtures from rotating silicon disks in nonionic surfactant solutions has been investigated (Beaudoin... 

The determination of the isotope ratios of uranium in individual particles by SIMS and ICPMS was compared (Esaka et al. 2009). Method development was first carried out with particles of UjOg powder (CRM 050) that were smeared on a standard cotton cloth used for safeguards sampling. For the ICP-MS analysis the particles were transferred from the cloth to a silicon disk that was placed in a SEM chamber and EDX analysis was used to locate the uranium particles. Single particles were then placed in the center of a silicon chip and each chip was transferred to a clean Teflon vial where the particle was dissolved by addition of 40% HNO3. Analysis of the solution was carried out with an Apex-Q desolvation systan. In addition to the mono-atomic ions U, and U), the 23xjji6Qt... 

Silicon Disks From Silicon Valley and Integrated Circuits from Taiwan... 

One-day-old biofilms of P. aeruginosa on silicone disks were inactivated to below the detection limit ( > 5 log reduction of viable counts) after 10 min exposure to 0.1% sodium hypochlorite, or after 30 min exposure to 0.01% sodium hypochlorite, while the same degree of inactivation for planktonic bacteria was achieved in less than Imin (Takeo et al., 1994). 

Figure 11.10 Reflection-absorption spectra of three LB films of cadmium arachidate on silver-coated silicon disks, (a) Monolayer LB film, (b) five-layer LB film, and (c) nine-layer LB film. Maximum-efficiency wavenumber, 1250 cm the angle of incidence, 80°. Spectra have been offset for clarity. (Source Reproduced with permission of T. Onishi 2013.)...

As an example, the samples used are the Langmuir-Blodgett (LB) films of cadmium arachidate adsorbed onto silver-coated silicon disks with a diameter of 20 mm. For the measurements, a PEM with a modulation frequency 2f = 148 kHz was used the PEM was set to give maximum efficiency at 1250 cm and the angle of incidence was 80. ... 

Many ICs are produced simultaneously on circular very thin monocrystalline silicon disks, also called wafers, which are sawn in the end. The common sizes of silicon wafers in today s factories are either 200 or 300 mm. A typical 300 mm wafer factory produces around 10,000 wafers per month. Many IC products are manufactured simultaneously in a production line (production system). Handling instmctions for production resources have to be changed automatically for wafers... 

A disk of silicon with a diameter of 5.5 cm is placed inside a reactor. The temperature of the silicon disk is kept at 673 K. The feed to the reactor is continuous and consists of a mixture of WFg, H2, and argon (Ar), which is inert. The total gas rate is 660 standard cm /min. The inlet mole fractions are... 

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