A method for producing a biocompatible structure, comprising: measuring a first functional relationship between a weight percentage of tissue forming nanoparticles in a polymer film and a maximum load of that polymer film to obtain a load graph representing the first functional relationship; measuring a second functional relationship between the weight percentage of tissue forming nanoparticles in a polymer film and maximum stress of that polymer film to obtain a stress graph representing the second functional relationship; wherein maximum load and maximum stress are measured using a pull test system and wherein maximum load is the pull force in Newton applied to the polymer film when the polymer film breaks and wherein maximum stress in KPa is the pull force applied to the polymer film when the polymer film breaks divided by the cross-sectional area of the polymer film; determining a first weight percentage of tissue forming nanoparticles corresponding to a peak of the load graph and determining a second weight percentage of tissue forming nanoparticles corresponding to a peak of the stress graph; determining an optimal weight percentage of tissue forming nanoparticles based on the first and second weight percentage values; wherein the optimal weight percentage is determined by determining an upper limit value of a range of the optimal weight percentage as a maximum value of the first weight percentage and the second weight percentage plus a first predetermined percentage; determining a lower limit value of the range as a minimum value of the first weight percentage and the second weight percentage minus a second predetermined percentage; and selecting a percentage from the range as the optimal weight percentage; and producing a biocompatible polymer film having first tissue forming particles at the optimal weight percentage, wherein the first tissue forming particles are nanoparticles. measuring a first functional relationship between a weight percentage of tissue forming nanoparticles in a polymer film and a maximum load of that polymer film to obtain a load graph representing the first functional relationship; measuring a second functional relationship between the weight percentage of tissue forming nanoparticles in a polymer film and maximum stress of that polymer film to obtain a stress graph representing the second functional relationship; wherein maximum load and maximum stress are measured using a pull test system and wherein maximum load is the pull force in Newton applied to the polymer film when the polymer film breaks and wherein maximum stress in KPa is the pull force applied to the polymer film when the polymer film breaks divided by the cross-sectional area of the polymer film; determining a first weight percentage of tissue forming nanoparticles corresponding to a peak of the load graph and determining a second weight percentage of tissue forming nanoparticles corresponding to a peak of the stress graph; determining an optimal weight percentage of tissue forming nanoparticles based on the first and second weight percentage values; wherein the optimal weight percentage is determined by determining an upper limit value of a range of the optimal weight percentage as a maximum value of the first weight percentage and the second weight percentage plus a first predetermined percentage; determining a lower limit value of the range as a minimum value of the first weight percentage and the second weight percentage minus a second predetermined percentage; and selecting a percentage from the range as the optimal weight percentage; and producing a biocompatible polymer film having first tissue forming particles at the optimal weight percentage, wherein the first tissue forming particles are nanoparticles.