Sol-Gel Methods for Oxide Coatings

Piezoelectric Pressure Sensor Based on Enhanced Thin-Film PZT Diaphragm Containing Nanocrystalline Powders

“…SD methods have three basic steps: synthesis of a metalorganic solution, deposition onto a substrate by a spin-casting or dip-coating method, and heat-treatment to remove organics and crystallize the ceramic microstructure. The general considerations in processing ceramic coatings by such routes are reviewed elsewhere [33,34]. In addition, several publications on solution-deposited ferroelectric films can be found in the literature [35][36][37].…”

“…For PZT thin films, the piezoelectric constants of interest are d 33 . The piezoelectric effect has been detected in poled and un-poled films.…”

“…For the converse effect, an electric field is applied and a strain in a thin film is measured. For d 33 determination, laser interferometry methods are used to monitor changes in thickness in a film (on a substrate) upon application of a small ac field [56,57].…”

Investigation of metal alloy reaction temperatures in solution-based AlZnSnO thin-film transistors

“…The AZTO precursor solution undergoes three different chemical reactions [10]. Figure 2 shows an abrupt initial weight loss at approximately 110 8C due to an endothermic reaction, during which the molecules in the precursor solution undergo Brownian motion [14,15]. The solvent evaporates gradually before the decline in volume to surface area (the increase in surface tension) pulls the molecules together and leads to condensation [14,15].…”

Influence of some system parameters on silica surface patterns by sol-gel phase separation method

“…In addition to the possibility of preparing different pure [5], doped [6,7], mixed oxides [8] and hybrids [8,9] at relatively low temperatures, sol-gel also enables in-situ control over the nano-and microstructure of prepared materials during transition from sol to gel [10]. Micro-and nanostructure of surfaces has a critical role in the design of superhydrophobic coatings [11] and solgel has been applied in phase separation based strategies [12,13] to achieve suitable micro-and nanoroughness.…”