Abstract: A method for forming a film of graphite oxide single layers. In one embodiment, the method includes the steps of preparing a solution of graphite oxide to allow a plurality of graphite oxide single layers to be formed and dispersed in the solution; and applying the solution of graphite oxide onto an air-water interface of water to form a film at the air-water interface, wherein the film comprises a plurality of graphite oxide single layers and is characterized by a packing density, wherein the film of graphite oxide single layers is formed with no presence of a surfactant or stabilizing agent.

Abstract: A method for imaging a graphene-based film. In one embodiment, the method includes the steps of providing a graphene-based film on a surface of a medium; forming a fluorescent coating over the graphene-based film to form a sample; illuminating the sample with light of a specific wavelength or wavelengths, which is absorbed by the fluorescent coating to cause the fluorescent coating to emit light of wavelengths longer than that of the absorbed light, which is quenched by the graphene-based film such that a visibility contrast is formed between the graphene-based film and the fluorescent coating; and imaging the graphene-based film from the visibility contrast.

Abstract: A method for imaging a graphene-based film. In one embodiment, the method includes the steps of providing a graphene-based film on a surface of a medium; forming a fluorescent coating over the graphene-based film to form a sample; illuminating the sample with light of a specific wavelength or wavelengths, which is absorbed by the fluorescent coating to cause the fluorescent coating to emit light of wavelengths longer than that of the absorbed light, which is quenched by the graphene-based film such that a visibility contrast is formed between the graphene-based film and the fluorescent coating; and imaging the graphene-based film from the visibility contrast.

Abstract: A method for forming a film of graphite oxide single layers. In one embodiment, the method includes the steps of preparing a solution of graphite oxide to allow a plurality of graphite oxide single layers to be formed and dispersed in the solution; and applying the solution of graphite oxide onto an air-water interface of water to form a film at the air-water interface, wherein the film comprises a plurality of graphite oxide single layers and is characterized by a packing density, wherein the film of graphite oxide single layers is formed with no presence of a surfactant or stabilizing agent.