Structural and electrical properties of inflamed graphite at high temperature as a new field emitter

We report a new carbon material with nanostructures, known as inflamed graphite at high temperature (IGHT). IGHT is fabricated by inflaming material in a mixture of hydrogen and oxygen gas at a temperature exceeding 2000°C. Fabricated IGHTs are encapsulated in a glass chamber in order to estimate the field emission current. The chamber pressure is as high as 10^-7 Pa. A field emission current exceeding 350 μA is obtained from IGHT. An IGHT emits a stable current with a low current dispersion below the standard deviation/mean (σ/mean) of 2%.σ/mean reveals that the IGHT withstands ion bombardment.