Alpha particle chloride

The purpose of encapsulation is to protect electronic IC devices and prolong their reliability. Moisture, mobile ions, (eg., sodium, potassium, chloride, fluorides), UV-VIS and alpha particle radiation, and hostile environmental conditions are some of the possible causes of degradation or interaction which could negatively affect device performance or lifetime. Silicon dioxide, silicon nitride and silicon-oxy-nitride, commonly used as passivation layers have excellent moisture and mobile ion barrier properties and are, therefore, excellent encapsulants for devices. As for the... 

Dodecyl acrylate microspheres, crosslinked with hexanediol diacrylate, were prepared by emulsion polymerisation and characterised by scanning electron microscopy, particle size measurement, and differential scanning calorimetry. The microspheres were doped with 9-(diethylamino)-5-(octadecanoylimino)-5H-benzo(alpha)phenoxazine (ETH 5294), a chromoionophore whose fluorescence emission spectrum is sensitive to pH. These microspheres adsorb anions selectively according to their lipophilicity, and therefore can be used as anion-selective optical sensors. The responses of the microspheres to chloride, nitrate and perchlorate ions were reported. 27 refs. 

The adsorption of some complexes on some substrates have been found to correlate with the changes in adhesion energy (Wa) [33]. For this study, the cationic surfactant dihydro-genated tallow dimethyl ammonium chloride (DHTDMAC) was complexed with four different anionic surfactants [i.e., sodium linear alkyl benzene sulfonate (LAS), sodium alpha olefin sulfonate (AOS), sodium alkyl sulfate (AS), and sodium alkyl ethoxy sulfate (AES). The amount of cationic surfactant adsorbed on three different textiles was closely correlated to the work of adhesion (Wa). Figure 6 shows the correlation for different cationic surfactant particle sizes on polyester, nylon, and cellulose. Wa between the complexes and the surface of the textiles was calculated using Wu s equation [34] measuring the contact angle of two liquids with the complex [35]. ... 

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