Strained Siloxane Rings on the Surface on Silica: Their Reaction with Organosiloxanes, Organosilanes, and Water

Silica Surface Features and Their Role in the Adsorption of Biomolecules: Computational Modeling and Experiments

“…Thus, an experimental basis was available for this assignment, which has first been made before the era of molecular modeling. Some attempts have been made to quantify S2R: Grabbe et al 140 reported a figure of 0.2 to 0.4 nm -2 on an Aerosil silica treated at 1075°C. Of course, less harsh treatments are expected to generate a lesser S2R concentration.…”

Towards single enzyme analysis in a droplet-based micro and nanofluidic system

“…[52][53][54] The electric field can be used for the generation or/and manipulation of droplets which will be discussed in the droplet manipulation section later.…”

“…Finally, the split droplets were rejoined by switching the voltage back to the middle and left electrodes ( In addition, the electrowetting effect (EW) can be used to perform droplet generation since the applied electric field can reduce the contact angle between the liquid and the surface of the microchannel. 83 This method had been investigated by Gu et al 53,54 Their flow-focusing device (FFD) with incorporated electrowetting design can generate smaller droplets than those generated by a solely hydrodynamic flow focusing system. (Fig.2-11 and 2-12).…”

“…In the device of Gu et al, 54 the resulting droplet sizes varied with the variation of applied electric field and applied pressures of disperse phase (P w ). At zero voltage ( Fig.2-12A), the tip of the water stream was just nearby the center plane of the device and, when applying a voltage, moved toward the bottom substrate ( Fig.2-12B).…”

“…53 Dehydroxylated siloxane bonds were reported to have a greatly enhanced reactivity compared to hydroxyl groups on the silica surface. [52][53][54] This strained form might be highly reactive to silicone oil molecules even without molecular radical formation of oil by UV irradiation.…”