Search results

1

Ultraviolet detectors based on ZnO films by thermal oxidation of Zn metallic films

100%

Zheng X., Li Q.

Open Physics

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2008

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vol. 6

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issue 2

351-355

EN

Metallic Zn films were deposited on glass substrates by electron-beam evaporation. ZnO films were synthesized by thermal oxidation of Zn metallic films in air. At the annealing temperature of 550 °C, ZnO nanowires appeared on the surface, which mainly result from the decrease of oxidation rate. A ZnO ultraviolet photodetector was fabricated based on a metal-semiconductor-metal planar structure. The detector showed a large UV photoresponse with an increase of two orders of magnitude. It is concluded that promising UV detectors can be obtained on ZnO films by thermal oxidation of Zn metallic films. The ways of performing spectral response measurements for polycrystalline ZnO films are also discussed.

2

Magnetic nanowires (Fe, Fe-Co, Fe-Ni) – magnetic moment reorientation in respect of wires composition

100%

Kalska-Szostko B., Wykowska U., Satuła D.

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issue 1

63-67

EN

Magnetic nanowires of Fe, Fe-Co, and Fe-Ni alloy and layered structure were prepared by electrochemical alternating current (AC) deposition method. The morphology of the nanowires in and without the matrix was studied by energy dispersive X-ray spectroscopy (EDX), scanning electron microscopy (SEM), and X-ray diffraction (XRD), respectively. The wires either show strong dependence on the combination of elements deposition (alloy or layered) or chemical composition (Co or Ni). The magnetic properties of the nanostructures were determined on the basis of Mössbauer spectroscopy (MS).

3

Synthesis and Magnetic Properties of Fe Nanowire Arrays Electrodeposited in Self-Ordered Alumina Membrane

88%

Dobosz I., Gumowska W., Czapkiewicz M.

Archives of Metallurgy and Materials

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2019

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vol. 64

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issue 3

4

Surface effects of adsorbed organic species on electrical properties of Au nanowires

88%

Lilley C. M., Meyer R.

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2007

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vol. 55

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issue 2

5

Organization of matter into one-dimensional units on designed media

88%

Paul K.

Open Physics

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2011

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vol. 9

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issue 2

360-368

EN

The organization of magnetic materials into one-dimensional micro- and nanowires on designed media is discussed, exemplified by two experiments on the microscale and nanoscale, with regard to particles as basic building blocks for the growth and development of matter. In the first organizational experiments, cobalt (Co) micro-particles are assembled on patterned media with perpendicular magnetization by acoustic vibrations onto designed shapes reflecting macroscopically the parent material. In the second experiments, semiconductor Germanium-Dysprosium (Ge98Dy2) matter is assembled on gold (Au) catalytic nuclei in a tube reactor by physical vapor transport as clusters of nanowires. The underlying mechanisms of organization are described, and similarities and distinctive features in the processes are discussed. The role of the energy-input in the form of mechanical vibrations and heat is outlined with its similar impact on the assembly and growth of matter on surfaces. The description of these experiments in view of organization allows more control over the processes of planned arrangement on designed media. Routes for further progress in this direction are briefly outlined.

6

FIB Method of Sectioning of III-V Core-Multi-Shell Nanowires for Analysis of Core/Sell Interfaces by High Resolution TEM

75%

Kret S., Kaleta A., Bilska M., Kurowska B., Siusys A., Dąbrowski J., Sadowski J.

Acta Physica Polonica A

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2017

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vol. 131

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issue 5

1332-1335

EN

The core-multishell wurtzite structure (In,Ga)As-(Ga,Al)As-(Ga,Mn)As semiconductor nanowires have been successfully grown on GaAs(111)B substrates using MBE technique. The nanowires cores were grown with gold eutectic catalyser in vapour-liquid-solid growth mode. The double shell overgrowth, on the side facets of nanowires, was performed using lower substrate temperature (about 400°C, and 230°C, for (Ga,Al)As, and (Ga,Mn)As shell growth, respectively). The polytypic ordering, defects, chemistry and geometric perfection of the core and the shells have been analysed at atomic level by advanced transmission electron microscope techniques with the use of axial and longitudinal section of individual nanowires prepared by focused ion beam. High quality cross-sections suitable for quantitative transmission electron microscope analysis have been obtained and enabled analysis of interfaces between the core and the shells with near atomic resolution. All investigated shells are epitaxial without misfit dislocations at the interface. Some of the shells thicknesses are not symmetric, which is due to the shadowing effects of neighbouring nanowires and directional character of the elemental fluxes in the MBE growth process.

7

Characterization of morphology and optical properties of SnO₂ nanowires prepared by electrospinning

75%

Tański T., Smok W., Matysiak W., Tański T., Smok W., Matysiak W.

|

2021

Refine search results

Ultraviolet detectors based on ZnO films by thermal oxidation of Zn metallic films

Magnetic nanowires (Fe, Fe-Co, Fe-Ni) – magnetic moment reorientation in respect of wires composition

Synthesis and Magnetic Properties of Fe Nanowire Arrays Electrodeposited in Self-Ordered Alumina Membrane

Surface effects of adsorbed organic species on electrical properties of Au nanowires

Organization of matter into one-dimensional units on designed media

FIB Method of Sectioning of III-V Core-Multi-Shell Nanowires for Analysis of Core/Sell Interfaces by High Resolution TEM

Characterization of morphology and optical properties of SnO₂ nanowires prepared by electrospinning