TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The mesoporous material is titanium dioxide, zirconium dioxide, aluminum oxide, niobium (V) oxide, tantalum (V) oxide, silicon dioxide, tungsten trioxide, hafnium dioxide, tin dioxide, mesoporous silicas (SBA-2, SBA-15, SBA-16, FSM-16, KSW-2, MSU-S, MSU-X), Hyper Y zeolite, ultrastable Y zeolite, faujasite, type L zeolite, mazzite, EMC-2 zeolite, magnesium aluminophosphate (MAPO-36), aluminum orthophosphates (AlPO4-5, AlPO4-8), VPI-5 aluminophosphate, zeolite A, zeolite X, zeolite Y, synthetic zeolites (ZK-5, ZK-4, ZK-21, ZK-22), zeolite beta , aluminosilicate zeolites (ZSM-5, ZSM-11, ZSM-12, ZSM-38, ZSM-22, ZSM-23, ZSM-34, ZSM-35, ZSM-48, ZSM-58), aluminosilicates (MCM-1, MCM-2, MCM-3, MCM-4, MCM-5, MCM-9, MCM-10, MCM-14, MCM-22, MCM-41, MCM-48, MCM-49, MCM-56), aluminophosphate (AlPO-11), titanium aluminosilicate (TASO-45), boron silicate, and/or titanium aluminophosphate. The filler is silicon, compound semiconductor material, or metal oxide. The compound semiconductor material is Group II-VI compound semiconductor material, Group III-V compound semiconductor material, and/or Group IV-VI compound semiconductor material. Preferred Method: The manufacturing method further comprises stacking the monolayered anti-reflection film with other monolayered anti-reflection film(s) having distinct refractive index(es). Before the thin film treatment step, the pores of the mesoporous material are filled with a filler having distinct refractive index from that of the mesoporous material. The filling is conducted by incorporating metal catalyst particles into the pores of the mesoporous material, particularly by subjecting a mixture solution comprising a metal salt, deionized water and a solvent to sonication, to form the metal catalyst particles. The mesoporous materials having metal catalyst particles are then three-dimensionally distributed to grow nanowires (this is conducted via vapor-liquid-solid process). The metal salt is preferably potassium tetrachloroaurate or hydrogen tetrachloroaurate. The solvent is preferably ethanol. Preferred Condition: The optical film has a reflectance of 0.01-1% in a visible light range. EXAMPLE - Triblock copolymers P123 (4 g), i.e. ethylene oxide-propylene oxide-ethylene oxide (EO20-PO70-EO20), deionized water (30 g), and 2 M hydrochloric acid (HCl, 120 g), were added and then stirred at room temperature for 4 hours. The solution was heated at 35 degrees C in a boiling water bath, slowly added with tetraethyl orthosilicate (8.5 g), and stirred at 35 degrees C for 20 hours. The resultant solution was subjected to hydrothermal treatment in autoclave at 80 degrees C for 24 hours without stirring, and filtered with deionized water to give composite mesoporous material. The mesoporous material was subjected to slurry treatment using an ethanol-HCl aqueous solution for 30 minutes. The obtained slurry was filtered, washed with ethanol, and dried in oven at 80 degrees C for 4 hours. The dried product was burned at 550 degrees C for 6 hours, then added to a prepared mixture from 0.005 M potassium tetrachloroaurate (25 ml), deionized water (75 ml), and ethanol (100 ml). The resultant mixture solution was subjected to sonication at room temperature for 3 hours to form metal catalyst particles, then filtered. The separated metal catalyst particles were washed with deionized water and ethanol, then dried in oven at 100 degrees C for 4 hours. The dried product was burned at 500 degrees C for 6 hours. The resultant mesoporous material with metal catalyst particles was loaded in furnace in a state of being placed in a small vial covered with quartz wool, then heated at a rate of 10-15 degrees C/minute while argon was supplied at 100 standard cubic centimeter per minute (sccm) and a structure source e.g. silane was supplied at 20 sccm. The process pressure was maintained at 3 torr. When the process temperature reached 460 degrees C, it was maintained at that temperature for 30 minutes to grow silicon nanowires. The temperature was then slowly decreased to room temperature.