TY - JOUR
KW - Film
KW - Oxide
KW - Electron microscopy
KW - Atomic force microscopy
KW - Article
KW - Chemical structure
KW - Priority journal
KW - X-ray Diffraction
KW - Palladium
AU - S Aggarwal
AU - A.P Monga
AU - S.R Perusse
AU - Ramamoorthy Ramesh
AU - V Ballarotto
AU - E.D Williams
AU - B.R Chalamala
AU - Y Wei
AU - R.H Reuss
AB - We report the spontaneous formation of uniformly distributed arrays of 'tips' (tall conical hillocks) upon oxidation of palladium (Pd) thin films. The formation of the palladium oxide tips depended on the thickness and granularity of the Pd film and on annealing and oxidation conditions. As the Pd film thickness increased from 40 to 200 nanometers, the average height of the tips increased from 0.5 to 1.2 micrometers, their height distribution became broader, and their density decreased from 55 x 106 to 12 >4 106 per square centimeter. Enhanced photoelectron emission from locations corresponding to the tips suggests their possible use in field emission applications.
BT - Science
DO - 10.1126/science.287.5461.2235
LA - eng
M1 - 5461
N1 - cited By 134
N2 - We report the spontaneous formation of uniformly distributed arrays of 'tips' (tall conical hillocks) upon oxidation of palladium (Pd) thin films. The formation of the palladium oxide tips depended on the thickness and granularity of the Pd film and on annealing and oxidation conditions. As the Pd film thickness increased from 40 to 200 nanometers, the average height of the tips increased from 0.5 to 1.2 micrometers, their height distribution became broader, and their density decreased from 55 x 106 to 12 >4 106 per square centimeter. Enhanced photoelectron emission from locations corresponding to the tips suggests their possible use in field emission applications.
PY - 2000
SP - 2235
EP - 2237
T2 - Science
TI - Spontaneous ordering of oxide nanostructures
VL - 287
SN - 00368075
ER -