http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
SnO_2 nanowires mixed nanodendrites for high ethanol sensor response
Surachet Phadungdhitidhada,Suvit Thanasanvorakun,Pongsri Mangkorntong,Supab Choopun,Nikorn Mangkorntong,Duangmanee Wongratanaphisan 한국물리학회 2011 Current Applied Physics Vol.11 No.6
Mixed morphology of SnO_2 nanowires and nanodendrites was synthesized on the gold-coated alumina substrates by carbothermal reduction of SnO_2 in closed crucible. The products were characterized by scanning electron microscopy, x-ray diffractometer, and transmission electron microscopy. Results showed the SnO_2 nanowires and the SnO_2 nanodendrites branched out from the main nanowires. Both SnO_2 nanostructures were pure tetragonal rutile structure. The nanowires were grown in [101] and [121]directions with the diameter of 50―150 nm and the length of a few 10 μm. The nanodendrites were about 100―300 nm in diameter. The growth mechanism of the SnO_2 nanostructures was also discussed. Characterization of ethanol gas sensor, based on the mixed morphology of the SnO_2 nanostructures, was carried out. The optimal temperature was about 360 ℃ and the sensor response was 120 for 1000 ppm of ethanol concentration.