The purpose of the present invention is to provide an emitter that is made of hafnium carbide (HfC) and that releases electrons in a stable and highly efficient manner, a method for manufacturing the emitter, and an electron gun and electronic device in which the emitter is used. In this nanowire equipped emitter, the nanowires are made of hafnium carbide (HfC) single crystal, the longitudinal direction of the nanowires match the <100> crystal direction of the hafnium carbide single crystal, and the end part of the nanowires through which electrons are to be released comprise the (200) face and the {310} face of the hafnium carbide single crystal, with the (200) face being the center and the {311} faces surrounding the (200) face.

The purpose of the present invention is to provide an emitter that is made of hafnium carbide (HfC) and that releases electrons in a stable and highly efficient manner, a method for manufacturing the emitter, and an electron gun and electronic device in which the emitter is used. In this nanowire equipped emitter, the nanowires are made of hafnium carbide (HfC) single crystal, the longitudinal direction of the nanowires match the <100> crystal direction of the hafnium carbide single crystal, and the end part of the nanowires through which electrons are to be released comprise the (200) face and the {310} face of the hafnium carbide single crystal, with the (200) face being the center and the {311} faces surrounding the (200) face.

The present invention(s) is directed to novel conductive M.sub.n+1X.sub.n(T.sub.s) compositions exhibiting high volumetric capacitances, and methods of making the same. The present invention(s) is also directed to novel conductive M.sub.n+1X.sub.n(T.sub.s) compositions, methods of preparing transparent conductors using these materials, and products derived from these methods.

The present invention(s) is directed to novel conductive M.sub.n+1X.sub.n(T.sub.s) compositions exhibiting high volumetric capacitances, and methods of making the same. The present invention(s) is also directed to novel conductive M.sub.n+1X.sub.n(T.sub.s) compositions, methods of preparing transparent conductors using these materials, and products derived from these methods.

The present invention(s) is directed to novel conductive M.sub.n+1X.sub.n(T.sub.s) compositions exhibiting high volumetric capacitances, and methods of making the same. The present invention(s) is also directed to novel conductive M.sub.n+1X.sub.n(T.sub.s) compositions, methods of preparing transparent conductors using these materials, and products derived from these methods.

The present invention(s) is directed to novel conductive M.sub.n+1X.sub.n(T.sub.s) compositions exhibiting high volumetric capacitances, and methods of making the same. The present invention(s) is also directed to novel conductive M.sub.n+1X.sub.n(T.sub.s) compositions, methods of preparing transparent conductors using these materials, and products derived from these methods.

The present invention relates to a carbon material coated with tantalum carbide and, more specifically, to a carbon material coated with tantalum carbide, comprising: a carbon substrate; and a tantalum carbide coated surface formed on the carbon substrate, wherein the carbon material coated with tantalum carbide has, as main peaks, X-ray diffraction peaks of the (111) plane, the (200) plane, the (220) plane and the (311) plane, of the tantalum carbide coated surface, and the peak of the (111) plane among the peaks has the maximum diffraction intensity. The present invention can provide the carbon material coated with tantalum carbide, having excellent chemical and physical resistance and extended lifespan.

The present invention relates to a carbon material coated with tantalum carbide and, more specifically, to a carbon material coated with tantalum carbide, comprising: a carbon substrate; and a tantalum carbide coated surface formed on the carbon substrate, wherein the carbon material coated with tantalum carbide has, as main peaks, X-ray diffraction peaks of the (111) plane, the (200) plane, the (220) plane and the (311) plane, of the tantalum carbide coated surface, and the peak of the (111) plane among the peaks has the maximum diffraction intensity. The present invention can provide the carbon material coated with tantalum carbide, having excellent chemical and physical resistance and extended lifespan.

Crystalline material, phototransistor, and methods of fabrication thereof. The crystalline material comprising a plurality of stacked two-dimensional black phosphorous carbide layers.

Crystalline material, phototransistor, and methods of fabrication thereof. The crystalline material comprising a plurality of stacked two-dimensional black phosphorous carbide layers.