Ultrathin Junctionless Nanowire FET Model, Including 2-D Quantum Confinements

This study was aimed at addressing the present challenge in tandem catalysts: how to furnish catalysts with tandem catalytic-ability without involving the precise control and man-made isolation of different types of catalytic sites.

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Optical Property Characterization of Silicon Quantum Wires

MRS Proceedings ◽

10.1557/proc-571-19 ◽

1999 ◽

Vol 571 ◽

Author(s):

D. P. Yu ◽

Z. G. Bai ◽

Y. H. Zou ◽

J. J. Wang ◽

H. Z. Zhang ◽

...

Keyword(s):

Optical Property ◽

Quantum Wires ◽

Ultra Violet ◽

Physical Origin ◽

Recent Success ◽

Defect Centers ◽

Property Characterization ◽

Quantum Confinements ◽

Silicon Quantum Wires

ABSTRACTThe recent success of bulk synthesis of pure nano-scale silicon quantum wires (SiQW's) enables us to evaluate their photoluminescence (PL) characteristics under ultra-violet photoexcitation. Intense multiple light emissions ranging from dark red to blue regions were revealed for as-grown and partially oxidized SiQW samples. The physical origin of the multiemissions is discussed on the basis of quantum confinements, or defect centers.

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Metal oxide rods and dots-based structures and devices: cost-effective fabrication and surface chemistry control

MRS Proceedings ◽

10.1557/proc-1209-p01-07 ◽

2009 ◽

Vol 1209 ◽

Author(s):

Lionel Vayssieres

Keyword(s):

Low Cost ◽

Surface Acidity ◽

Cost Effective ◽

New Materials ◽

Materials Development ◽

Environment And Health ◽

Energy Environment ◽

Improved Stability ◽

And Control ◽

Quantum Confinements

AbstractThe necessity of materials development which is not limited to materials that can achieve their theoretical limits, but makes it possible to raise theoretical limits by changing the fundamental underlying physics and chemistry while keep the fabrication cost to a minimum is crucial. Materials nanotechnologies based on chemical fabrication approaches is one of the immediate answer to the enormous need for cost-effective new materials for energy, environment, and health. R&D exploiting chemical nanoscience and nanotechnology has the greatest potential to efficiently contribute to such challenging goals. Indeed, the creation of new materials with higher performance and improved stability achieved by atomic, molecular and nanostructural design and control using unique nanoscale phenomena such as quantum confinements is the key. A synthesis involving the aqueous condensation of metal ions from solutions of metal salts for the low-cost fabrication of engineered arrays consisting of oriented nanorods of metal oxides orientations onto various substrates as well as the ability to control the surface acidity of quantum dots from acidic to neutral to basic by size effect are presented.

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