Method of producing a coating of nano-sized crystalline calcium phosphate comprising the steps of a) providing a solution of water and stoichiometric dissolved amounts of a phosphorous precursor and of a calcium salt precursor, b) adding a surfactant, and optionally a hydrophobic organic solvent, to the solution of a) to create a liquid crystalline phase, c) allowing the liquid crystalline phase to equilibrate, and d) placing the equilibrated liquid crystalline phase in an ammonia atmosphere to raise the pH so that nano-sized crystals of calcium phosphate are formed in the water domains of the liquid crystalline phase, the steps a) - d) being performed at ambient temperature, followed by e1) diluting the ammonia-treated liquid crystalline phase of d) with a hydrophobic organic solvent to create a microemulsion of the nano-sized crystals of calcium phosphate in water, f1) dipping an oxide layer-coated surface of an object into the microemulsion of e1) to deposit the microemulsion onto the surface, g1) evaporating the organic solvent from the surface of f1) to obtain the coating of nano-sized crystalline calcium phosphate, and h1) heating under inert atmosphere in order to remove the surfactant. or alternatively omitting step d) and e2) diluting the liquid crystalline phase of c) with a hydrophobic organic solvent to create a microemulsion, f2) dipping an oxide layer-coated surface of an object into the microemulsion of e2) to deposit the microemulsion onto the surface, g2) evaporating the organic solvent from the surface of f2) to form a liquid crystalline phase, and h2) placing the surface of g2) in an ammonia atmosphere to raise the pH so that nano-sized crystals of calcium phosphate are formed in the water domains of the liquid crystalline phase and are deposited on the surface, followed by i1) heating under inert atmosphere in order to remove the surfactant. a) providing a solution of water and stoichiometric dissolved amounts of a phosphorous precursor and of a calcium salt precursor, b) adding a surfactant, and optionally a hydrophobic organic solvent, to the solution of a) to create a liquid crystalline phase, c) allowing the liquid crystalline phase to equilibrate, and d) placing the equilibrated liquid crystalline phase in an ammonia atmosphere to raise the pH so that nano-sized crystals of calcium phosphate are formed in the water domains of the liquid crystalline phase, e1) diluting the ammonia-treated liquid crystalline phase of d) with a hydrophobic organic solvent to create a microemulsion of the nano-sized crystals of calcium phosphate in water, f1) dipping an oxide layer-coated surface of an object into the microemulsion of e1) to deposit the microemulsion onto the surface, g1) evaporating the organic solvent from the surface of f1) to obtain the coating of nano-sized crystalline calcium phosphate, and h1) heating under inert atmosphere in order to remove the surfactant. e2) diluting the liquid crystalline phase of c) with a hydrophobic organic solvent to create a microemulsion, f2) dipping an oxide layer-coated surface of an object into the microemulsion of e2) to deposit the microemulsion onto the surface, g2) evaporating the organic solvent from the surface of f2) to form a liquid crystalline phase, and h2) placing the surface of g2) in an ammonia atmosphere to raise the pH so that nano-sized crystals of calcium phosphate are formed in the water domains of the liquid crystalline phase and are deposited on the surface, followed by i1) heating under inert atmosphere in order to remove the surfactant.