TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Compound: The alkali compound is chosen from potassium hydroxide, sodium hydroxide, ammonium hydroxide, tetrahydroxymethyl ammonium and tetrahyroxy ethyl ammonium chloride. The composition further contains silica compound chosen from fine powder of silica, sodium oxide-stabilized colloidal silica solution, potassium oxide-stabilized colloidal silica solution, acid-stabilized colloidal silica solution, ammonia-stabilized colloidal silica solution, liquid sodium silicate, liquid potassium silicate and lithium silicate.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Acid: The fatty acid is chosen from acetic acid, propionic acid, butyric acid, valeric acid, enanthic acid, caprylic acid, pelargonic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid, behenic acid, lignoceric acid, cerotic acid, eicosapentaenoic acid, docosa hexaenoic acid, linoleic acid, alpha -linoleic acid, gamma -linoleic acid, dihomo- gamma -linolenic acid, arachidonic acid, oleic acid, elaidic acid, erucic acid and nervonic acid. The texture etchant composition further comprises fluorine-based surfactant chosen from 1-30C perfluoroalkyl carboxylic acid or its salt, perfluoroalkyl sulfonate, perfluoroalkyl alkyl sulfate, perfluoroalkyl phosphate, perfluoroalkyl amine salt, perfluoroalkyl quaternary ammonium salt, perfluoroalkyl carboxy betaine, fluorinated alkyl polyoxyethylene and perfluoroalkyl polyoxyethylene. The stabilized colloidal silica solutions contain organic solvent chosen from ethyl alcohol, isopropyl alcohol, ethylene glycol, methyl ethyl ketone and methyl isobutyl ketone. The deposition is carried out at 50-100 degrees C for 30 seconds to 60 minutes.    TECHNOLOGY FOCUS - POLYMERS - Preferred Compound: The polysaccharide is chosen from glucan compound, fructan compound, reed lactan group compound and their metal salt. The glucan compound is chosen from cellulose, dimethylaminoethyl cellulose, diethylaminoethyl cellulose, ethylhydroxyethylcellulose, methylhydroxyethylcellulose, 4-aminobenzyl cellulose, triethylaminoethyl cellulose, cyanoethylcellulose, ethylcellulose, methyl cellulose, carboxymethyl cellulose, carboxyethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, alginic acid, amylose, amylopectin, pectin, starch, dextrin, alpha -cyclodextrin, beta -cyclodextrin, gamma - cyclodextrin, hydroxypropyl beta -cyclodextrin, methyl- beta - cyclodextrin, dextran, dextran sulfate sodium, saponin, glycogen, zymosan, lentinan, and their metal salt. The polysaccharide has average molecular weight of 5000-1000000.