Abstract: A gas sensor comprises a basic part and a sensing layer deposited on the basic part. The basic part includes a circuit board and at least one surface acoustic wave element disposed on the circuit board. The sensing layer is a nanocomposite film of reduced graphene oxide/tungsten oxide/polypyrrole deposited on the surface acoustic wave element. The sensing layer combines reduced graphene oxide, metal oxide, and conductive polymer, so that the sensing layer is able to perform sensing at room temperature, and can be more sensitive. The present invention provides a method for manufacturing a gas sensor, and a gas sensing system including the gas sensor.

Abstract: A gas sensor comprises a basic part and a sensing layer deposited on the basic part. The basic part includes a circuit board and at least one surface acoustic wave element disposed on the circuit board. The sensing layer is a nanocomposite film of reduced graphene oxide/tungsten oxide/polypyrrole deposited on the surface acoustic wave element. The sensing layer combines reduced graphene oxide, metal oxide, and conductive polymer, so that the sensing layer is able to perform sensing at room temperature, and can be more sensitive. The present invention provides a method for manufacturing a gas sensor, and a gas sensing system including the gas sensor.

Abstract: A dye-sensitized solar cell includes a negative electrode, a positive electrode, a photoelectrode mounted between the negative electrode and the positive electrode, and an electrolyte located between the photoelectrode and the positive electrode. The photoelectrode is adapted to absorb a dye. The photoelectrode includes a dense layer, a scattering layer and a carrier transport layer. The dense layer, the scattering layer and the carrier transport layer are stacked one upon another. The dense layer is formed by titanium dioxide nanoparticles having a diameter of 15-20 nm. The scattering layer is formed by titanium dioxide nanospheres having a diameter of 200-500 nm. The carrier transport layer is formed by titanium dioxide nanotubes having a length of 300-800 nm. Furthermore, a photoelectrode for the dye-sensitized solar cell, as well as a method for producing the photoelectrode, are also disclosed.

Abstract: A dye-sensitized solar cell includes a negative electrode, a positive electrode, a photoelectrode mounted between the negative electrode and the positive electrode, and an electrolyte located between the photoelectrode and the positive electrode. The photoelectrode is adapted to absorb a dye. The photoelectrode includes a dense layer, a scattering layer and a carrier transport layer. The dense layer, the scattering layer and the carrier transport layer are stacked one upon another. The dense layer is formed by titanium dioxide nanoparticles having a diameter of 15-20 nm. The scattering layer is formed by titanium dioxide nanospheres having a diameter of 200-500 nm. The carrier transport layer is formed by titanium dioxide nanotubes having a length of 300-800 nm. Furthermore, a photoelectrode for the dye-sensitized solar cell, as well as a method for producing the photoelectrode, are also disclosed.

Abstract: A super-resolution recordable optical disk includes a substrate and forms sequentially on the substrate an under dielectric layer, a mask layer, an interface layer, an organic dye layer, an isolation layer, and a protection layer. A laser beam is projected into the organic dye layer through the substrate to record signals. And a super-resolution recordable optical disk for high numerical apertures also is provided that includes a substrate and forms sequentially on the substrate an organic dye layer, an interface layer, a mask layer an under dielectric layer, and a thin polycarbonate layer. A laser beam is projected into the organic dye layer through the thin polycarbonate layer to record signals.

Abstract: The present invention provides a rhodamine dye for recording layer of the high density optical recording disc, which has a chemical structure as shown in (I): where X− represents an acid anion and R represents a benzoic acid group, benzene sulfonic acid group or benzoic ester group. The dye of the present invention is applicable to recording layer of the high density optical recording disc after prepared appropriately. The dye of the present invention is cost efficient and simple in synthesis and purification.

Abstract: The present invention provides a rhodamine dye for recording layer of the high density optical recording disc, which has a chemical structure as shown in (I): 1

Abstract: A super-resolution recordable optical disk includes a substrate and forms sequentially on the substrate an under dielectric layer, a mask layer, an interface layer, an organic dye layer, an isolation layer, and a protection layer. A laser beam is projected into the organic dye layer through the substrate to record signals. And a super-resolution recordable optical disk for high numerical apertures also is provided that includes a substrate and forms sequentially on the substrate an organic dye layer, an interface layer, a mask layer an under dielectric layer, and a thin polycarbonate layer. A laser beam is projected into the organic dye layer through the thin polycarbonate layer to record signals.