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Silica Sol-Gel Control With High Voltage Contactless Electrodes, Jonathan C. Hebert
Silica Sol-Gel Control With High Voltage Contactless Electrodes, Jonathan C. Hebert
Nanoscience and Microsystems ETDs
High Voltage Contactless Electrodes (HVE) non-evasively modulates silica sol-gel reactions by redistributing charge in solution. HVE induces formation of local neutral band (LNB) strata (pseudo interfacial surfaces) where the gradient of potential is zero ∇𝜓𝜓=0. HVE LNB shape corresponds to solubility and ultimately sol-gel form. HVE silica sol-gel control works by localizing pH and creating conditions where silanol polymerization is biform; condensation by protonation (cathodic), or by deprotonation (anodic). Steric modified Poisson-Boltzmann equation is used to develop a theory on HVE control of silica sol-gel formation and a nucleate potential functional of potential 𝜓𝜓. Technologies developed during this research are …