A method for making blackbody radiation source is provided. A blackbody radiation cavity and a carbon nanotube array located on a substrate are provided. A black lacquer layer is coated on an inner surface of the blackbody radiation cavity. A pressure is applied to the carbon nanotube array to form a carbon nanotube paper. The carbon nanotube paper is placed on the black lacquer layer. The substrate is peeled off to make the carbon nanotube paper bond to the black lacquer layer. An adhesive tape is placed on the carbon nanotube paper. And then the adhesive tape peeling off to separate carbon nanotubes in the carbon nanotube paper from the adhesive tape and bond to the black lacquer layer, the carbon nanotubes vertically aligned and forms the carbon nanotube array.

A method for making blackbody radiation source is provided. A blackbody radiation cavity and a carbon nanotube array located on a substrate are provided. A black lacquer layer is coated on an inner surface of the blackbody radiation cavity. A pressure is applied to the carbon nanotube array to form a carbon nanotube paper. The carbon nanotube paper is placed on the black lacquer layer. The substrate is peeled off to make the carbon nanotube paper bond to the black lacquer layer. An adhesive tape is placed on the carbon nanotube paper. And then the adhesive tape peeling off to separate carbon nanotubes in the carbon nanotube paper from the adhesive tape and bond to the black lacquer layer, the carbon nanotubes vertically aligned and forms the carbon nanotube array.

A method for making blackbody radiation source is provided. A blackbody radiation cavity and a carbon nanotube array located on a substrate are provided. A black lacquer layer is coated on an inner surface of the blackbody radiation cavity. A pressure is applied to the carbon nanotube array to form a carbon nanotube paper on the surface of the substrate. The carbon nanotube paper is placed on the black lacquer layer. And then the substrate is peeled off to separate carbon nanotubes in the carbon nanotube paper from the substrate and bond to the black lacquer layer, the carbon nanotubes in the carbon nanotube paper vertically aligned and forms the carbon nanotube array under forces of the substrate and the black lacquer layer.

A method for making blackbody radiation source is provided. A blackbody radiation cavity and a carbon nanotube array located on a substrate are provided. A black lacquer layer is coated on an inner surface of the blackbody radiation cavity. A pressure is applied to the carbon nanotube array to form a carbon nanotube paper on the surface of the substrate. The carbon nanotube paper is placed on the black lacquer layer. And then the substrate is peeled off to separate carbon nanotubes in the carbon nanotube paper from the substrate and bond to the black lacquer layer, the carbon nanotubes in the carbon nanotube paper vertically aligned and forms the carbon nanotube array under forces of the substrate and the black lacquer layer.

According to embodiments of the present invention, a method of writing to an optical data storage medium is provided. The method includes receiving a plurality of data elements, each data element having one of a plurality of values, wherein each value of the plurality of values is associated with a wavelength, and forming, for each data element, a nanostructure arrangement on the optical data storage medium, the nanostructure arrangement configured to reflect light of the wavelength associated with the value of the data element in response to a light irradiated on the optical data storage medium. According to further embodiments of the present invention, a method of reading from an optical data storage medium and an optical data storage medium are also provided.