dramatically influences its electrical properties. For example, the electrical conductivity of UO1.994 is orders of magnitude lower at higher temperatures than the conductivity of UO2.001 . Uranium dioxide, like U3O8, is a ceramic material capable of withstanding high temperatures (about 2300 °C, in comparison with at most 200 °C for silicon or GaAs), making it suitable for high-temperature applications like thermophotovoltaic devices. Uranium dioxide is also resistant to radiation damage, making it useful for rad-hard devices for special military and aerospace applications. A Schottky diode of U3O8 and a p-n-p transistor of UO2 were successfully manufactured in a laboratory. Toxicity Uranium dioxide is known to be absorbed by phagocytosis in the lungs. See also Cleveite Ducrete Uranium oxide Uranium glass Uranium tile References Further reading External links Semiconducting properties of uranium oxides Free Dictionary Listing for Uranium Dioxide The Uranium dioxide International Bio-Analytical Industries, Inc. Nuclear chemistry Uranium(IV) compounds Nuclear materials Oxides Semiconductor materials Articles containing video clips Fluorite crystal structure