Analysis of hyperfine structure in chalcogen-doped silicon and germanium nanowires

2015 ◽  
Vol 91 (12) ◽  
Author(s):  
Guido Petretto ◽  
Andrea Massé ◽  
Marco Fanciulli ◽  
Alberto Debernardi
Keyword(s):  
Hyperfine Structure ◽  
Germanium Nanowires ◽  
Doped Silicon ◽  
Silicon And Germanium

Application Conditions of Effective Medium Theory in Near-Field Radiative Heat Transfer Between Multilayered Metamaterials

2014 ◽  
Vol 136 (9) ◽  
Author(s):  
X. L. Liu ◽  
T. J. Bright ◽  
Z. M. Zhang
Keyword(s):  
Heat Transfer ◽  
Radiative Heat Transfer ◽  
Radiative Heat ◽  
Effective Medium Theory ◽  
Near Field ◽  
Effective Medium ◽  
Medium Theory ◽  
Metal Metal ◽  
Doped Silicon ◽  
Silicon And Germanium

This work addresses the validity of the local effective medium theory (EMT) in predicting the near-field radiative heat transfer between multilayered metamaterials, separated by a vacuum gap. Doped silicon and germanium are used to form the metallodielectric superlattice. Different configurations are considered by setting the layers adjacent to the vacuum spacer as metal–metal (MM), metal–dielectric (MD), or dielectric–dielectric (DD) (where M refers to metallic doped silicon and D refers to dielectric germanium). The calculation is based on fluctuational electrodynamics using the Green's function formulation. The cutoff wave vectors for surface plasmon polaritons (SPPs) and hyperbolic modes are evaluated. Combining the Bloch theory with the cutoff wave vector, the application condition of EMT in predicting near-field radiative heat transfer is presented quantitatively and is verified by exact calculations based on the multilayer formulation.

Synthesis and Electrical and Mechanical Properties of Silicon and Germanium Nanowires

2008 ◽  
Vol 20 (19) ◽  
pp. 5954-5967 ◽  
Author(s):  
Xueyan Wu ◽  
Jaideep S. Kulkarni ◽  
Gillian Collins ◽  
Nikolay Petkov ◽  
Dorothee Almécija ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Germanium Nanowires ◽  
Silicon And Germanium

ChemInform Abstract: Synthesis and Electrical and Mechanical Properties of Silicon and Germanium Nanowires

ChemInform ◽  
2008 ◽  
Vol 39 (50) ◽  
Author(s):  
Xueyan Wu ◽  
Jaideep S. Kulkarni ◽  
Gillian Collins ◽  
Nikolay Petkov ◽  
Dorothee Almecija ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Germanium Nanowires ◽  
Silicon And Germanium

Composition and Size Effects on the Optical Properties of Isolated Silicon-Germanium Nanowires

2012 ◽  
Vol 1408 ◽  
Author(s):  
Houssem Kallel ◽  
Abdallah Chehaidar ◽  
Arnaud Arbouet ◽  
Thierry Baron ◽  
Alexis Potié ◽  
...  
Keyword(s):  
Optical Properties ◽  
Silicon Germanium ◽  
Size Effects ◽  
Numerical Study ◽  
Mie Theory ◽  
Light Polarization ◽  
Angle Of Incidence ◽  
Nanowire Diameter ◽  
Germanium Nanowires ◽  
Silicon And Germanium

ABSTRACTSilicon and Germanium nanowires (NWs) have shown a strong ability to enhance both the absorption and scattering of light. Tailoring the optical properties of Si or Ge NWs can be obtained by adjusting the nanowire diameter. Another parameter that can be used is the chemical composition of silicon-germanium (Si1-xGex-NWs) alloys. In this work, we perform a numerical study on the optical properties of single Si1-xGex-NWs based on the Lorenz-Mie theory. The effects of Ge composition, light polarization and angle of incidence on the nanowire optical properties are investigated.

(Invited) Defects and Dopants in Silicon and Germanium Nanowires

2015 ◽  
Vol 69 (5) ◽  
pp. 69-79 ◽  
Author(s):  
M. Fanciulli ◽  
M. Belli ◽  
S. Paleari ◽  
A. Lamperti ◽  
A. Molle ◽  
...  
Keyword(s):  
Germanium Nanowires ◽  
Silicon And Germanium

First-principles optical properties of silicon and germanium nanowires

2007 ◽  
Vol 601 (13) ◽  
pp. 2707-2711 ◽  
Author(s):  
M. Bruno ◽  
M. Palummo ◽  
S. Ossicini ◽  
R. Del Sole
Keyword(s):  
Optical Properties ◽  
First Principles ◽  
Germanium Nanowires ◽  
Silicon And Germanium

scholarly journals Synthesis of silicon and germanium nanowires.

2007 ◽  
Author(s):  
Teresa J. Clement ◽  
Julia W. P. Hsu
Keyword(s):  
Germanium Nanowires ◽  
Silicon And Germanium
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