Systems and methods for lens creations are disclosed. The method includes initiating light transmission from a light source through a diffuser into a container holding resin and a substrate. The light transmission is performed according to an irradiation pattern wherein each point in the resin is illuminated by at least 10% of the diffuser. This causes a lens to be formed. To achieve this illumination, at least 15% of the diffuser receives light from the light source. Further, a diameter of the diffuser is greater than or equal to a diameter of the substrate. The system performing the methods includes a polymerization apparatus and may include a resin conditioning and reservoir apparatus, a metrology unit, a resin drainage apparatus and an optional postcuring apparatus.

A method of forming a model of a porous structure includes three dimensionally printing a mold of the porous structure using a polycaprolactone mold material, filling the mold with a polymer mixture, and heating the filled mold at a temperature above a melting temperature of the mold material to cure the polymer mixture, where the cured polymer mixture forms the model of the porous structure.

Disclosed are a negative pressure driven sucking apparatus and a preparation method thereof. The sucking apparatus comprises a sucking disc body, wherein a negative pressure cavity is formed in the middle of the sucking disc body, and the negative pressure cavity is connected with a vacuum line, and the bottom of the negative pressure cavity having a flexible section, and an annular wedge-shaped microstructure is formed at the bottom of the body surrounding the flexible section. Stable loading and release processes of the annular wedge-shaped microstructure are realized.

A method for producing jewelry from human milk and an epoxy resin involving mixing human milk with a transparent epoxy resin, placing it in the mold and allowing it to harden, in which an epoxy resin and an amine hardener are used, wherein a quantity of cysteine and/or serine equal to at least 0.1 percent by weight of the milk is first added to human milk and the resulting mixture is introduced into the mixture of an epoxy resin with an amine hardener in an amount between 0.1 percent and 40 percent by volume of the mixture of an epoxy resin and a hardener.

A method for producing jewelry from human milk and an epoxy resin involving mixing human milk with a transparent epoxy resin, placing it in the mold and allowing it to harden, in which an epoxy resin and an amine hardener are used, wherein a quantity of cysteine and/or serine equal to at least 0.1 percent by weight of the milk is first added to human milk and the resulting mixture is introduced into the mixture of an epoxy resin with an amine hardener in an amount between 0.1 percent and 40 percent by volume of the mixture of an epoxy resin and a hardener.

A printing process of high resolution, preferably medical, devices with complex geometries is described, comprising the steps of: printing a model (1) with a three-dimensional printing method by using a three-dimensional printer; said model (1) positive reproducing the medical device (10) to be made; - said model (1) being printed of a first water-soluble polymer (2) or aqueous solutions; covering said model (1) with a layer of material (3) insoluble to a solution able to dissolve said first soluble polymer (2); said covering step making a shell of solid mold (7) provided with a surface comprising empty interstitial spots; - infiltrating an amount of water or aqueous solution into said solid mold through said empty interstitial spots so that to dissolve said model (1) and to make a mold cavity (8) negative reproducing said model (1); - infiltrating into the mold

An embodiment can provide a polyamide-imide film and a method for producing same, the film comprising a polyamide-imide polymer formed by polymerizing an aromatic diamine compound, an aromatic dianhydride compound and a dicarbonyl compound, wherein, in an XRD graph with a section in which 2θ=8° to 32° as a baseline, the film shows a peak area of 50% or above around 2θ=23° with respect to a peak area seen around 2θ=15°.

An embodiment can provide a polyamide-imide film and a method for producing same, the film comprising a polyamide-imide polymer formed by polymerizing an aromatic diamine compound, an aromatic dianhydride compound and a dicarbonyl compound, wherein, in an XRD graph with a section in which 2θ=8° to 32° as a baseline, the film shows a peak area of 50% or above around 2θ=23° with respect to a peak area seen around 2θ=15°.

A composite material molding method is provided for forming a composite material. The molding includes disposing a reinforcing base material in a cavity inside an openable and closable mold, injecting resin into the cavity in a state in which a clamping pressure is exerted on the mold and curing the resin. When injecting the resin into the cavity, the injection pressure of the resin is adjusted between a first pressure that is higher than the clamping pressure and a second pressure that is lower than the clamping pressure, and the injection pressure of the resin is lowered from the pressure that is higher than the clamping pressure to the pressure that is lower than the clamping pressure at least once. The resin is thereby injected such that the pressure inside the cavity does not exceed the clamping pressure from the start of injection to the end of injection of the resin.

A composite material molding method is provided for forming a composite material. The molding includes disposing a reinforcing base material in a cavity inside an openable and closable mold, injecting resin into the cavity in a state in which a clamping pressure is exerted on the mold and curing the resin. When injecting the resin into the cavity, the injection pressure of the resin is adjusted between a first pressure that is higher than the clamping pressure and a second pressure that is lower than the clamping pressure, and the injection pressure of the resin is lowered from the pressure that is higher than the clamping pressure to the pressure that is lower than the clamping pressure at least once. The resin is thereby injected such that the pressure inside the cavity does not exceed the clamping pressure from the start of injection to the end of injection of the resin.