Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Nabil M. Amer"'
Publikováno v:
Applied optics. 20(8)
The theory for a sensitive spectroscopy based on the photothermal deflection of a laser beam is developed. We consider cw and pulsed cases of both transverse and collinear photothermal deflection spectroscopy for solids, liquids, gases, and thin film
Autor:
Joachim Wollschläger, Nabil M. Amer
Publikováno v:
Surface Science. 277:1-7
The growth of Au on the Co decorated Au(111) surface has been studied by scanning tunneling microscopy. The decoration causes an increased sticking probability of the Au atoms to the Co covered elbows of the herringbone reconstruction until they are
Publikováno v:
Surface Science. 274:L541-L545
The role of strain relief and kinetics in surfactant-mediated epitaxial growth of Ge on Si(111) was studied with scanning tunneling microscopy. For coverages of up to ≈ 20 ML the images reveal a variety of strain relief mechanisms which include tre
Publikováno v:
Optics letters. 6(1)
Publikováno v:
Physical Review B. 44:10354-10357
The initial nucleation and the subsequent growth of Co on Au(111) have been studied with scanning tunneling microscopy. At low coverage the cobalt nucleates forming polygonal islands whose location and spacing are determined by the underlying Au(111)
Publikováno v:
Surface Science Letters. 255:L529-L535
The epitaxial of Fe on Au(111) has been studied with scanning tunneling microscopy. At low coverage the iron nucleates forming polygonal islands whose spacing is determined by the underlying Au(111) zigzag reconstruction geometry. The islands are one
Publikováno v:
Physical Review B. 42:7230-7233
Scanning-tunneling-microscopy images of the Si(111) \ensuremath{\surd}3 \ifmmode\times\else\texttimes\fi{} \ensuremath{\surd}3 -Sb surface show a trigonal lattice of protrusions, with a characteristic dependence on bias voltage. When probing filled s
Autor:
Nabil M. Amer, Ady Levy
Publikováno v:
Applied Physics Letters. 66:3594-3596
Picosecond photothermal displacement experiments were performed to resolve the rise time of the actual surface expansion of laser‐illuminated metals. A rise time of ∼100 ps was resolved for Ni, in agreement with the predictions of a hydrodynamic
Autor:
Nabil M. Amer, Gerhard Meyer
Publikováno v:
Applied Physics Letters. 57:2089-2091
An atomic force microscope capable of measuring, simultaneously yet separately, lateral (‘‘frictional’’) and normal forces is described. A direction‐dependent feature, absent in topological images, is found when scanning stepped surfaces of
Autor:
Nabil M. Amer
Publikováno v:
Physics Today. 56:77-77