Bacterial Toxicity of Germanium Nanocrystals Induced by Doping with Boron and Phosphorus

2019 ◽  
Vol 2 (8) ◽  
pp. 4744-4755 ◽  
Author(s):  
Bo Zhi ◽  
Yueke Yang ◽  
Natalie V. Hudson-Smith ◽  
Uwe R. Kortshagen ◽  
Christy L. Haynes
Keyword(s):  
Germanium Nanocrystals ◽  
Bacterial Toxicity

Tetragonal Phase Germanium Nanocrystals in Lithium Ion Batteries

ACS Nano ◽  
2013 ◽  
Vol 7 (10) ◽  
pp. 9075-9084 ◽  
Author(s):  
Yong Jae Cho ◽  
Hyung Soon Im ◽  
Han Sung Kim ◽  
Yoon Myung ◽  
Seung Hyuk Back ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Tetragonal Phase ◽  
Lithium Ion ◽  
Germanium Nanocrystals

Strong quantum-confinement effects in the conduction band of germanium nanocrystals

2004 ◽  
Vol 84 (20) ◽  
pp. 4056-4058 ◽  
Author(s):  
C. Bostedt ◽  
T. van Buuren ◽  
T. M. Willey ◽  
N. Franco ◽  
L. J. Terminello ◽  
...  
Keyword(s):  
Conduction Band ◽  
Quantum Confinement ◽  
Confinement Effects ◽  
Quantum Confinement Effects ◽  
Germanium Nanocrystals

Photoluminescence Quantum Efficiency of Self Assembled Germanium Nanocrystals

2019 ◽  
Vol 19 (8) ◽  
pp. 31-42
Author(s):  
David J. Lockwood ◽  
Nelson Rowell ◽  
Isabelle Berbezier ◽  
Antoine Ronda
Keyword(s):  
Quantum Efficiency ◽  
Germanium Nanocrystals ◽  
Self Assembled

Pulmonary hemodynamics and tissue damage after one lung infusion of Pseudomonas aeruginosa in sheep

1992 ◽  
Vol 72 (4) ◽  
pp. 1386-1392 ◽  
Author(s):  
H. M. Loick ◽  
D. J. Dehring ◽  
R. Tokyay ◽  
H. A. Linares ◽  
M. J. Evans ◽  
...  
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Pulmonary Vascular Resistance ◽  
Vascular Resistance ◽  
Tissue Damage ◽  
Left Lung ◽  
Resistance Index ◽  
Pulmonary Hemodynamics ◽  
Pulmonary Vascular Resistance Index ◽  
Bacterial Toxicity ◽  
Bacterial Infusion

The relative roles of hematogenous mediators and direct bacterial toxicity due to phagocytosis by pulmonary intravascular macrophages were determined by selective bacterial infusion into the left pulmonary artery and comparison of right and left lungs at 24 h. Chronically instrumented sheep received 15-min pulmonary arterial infusions of live Pseudomonas aeruginosa (0.35–2.9 x 10(9), n = 6) or saline (n = 5). The saline group demonstrated stable cardiopulmonary function over time. Left lung blood flow, measured by Doppler flow probe, decreased 15 min into the bacterial infusion, with a concomitant sevenfold increase in left lung pulmonary vascular resistance index. The right lung pulmonary vascular resistance index doubled at 1 h, in association with increased plasma thromboxane B2 levels. An increase in cardiac index and decrease in systemic vascular resistance occurred at 12 h. The wet-to-dry weight ratio of the Pseudomonas-infused left lung was increased compared with that of the sham-infused lung. The tissue count of neutrophils in the lungs was doubled in both sides, but neutrophils on the left were more degranulated. The left lung tissue damage was caused by direct bacterial toxicity, including activation of phagocytic cells. Hematogenous mediators induced pulmonary and systemic hemodynamic changes and right lung neutrophil sequestration, but they did not damage the noninfused lung.

Optical Properties of Germanium Nanocrystals

1999 ◽  
Vol 175 (1) ◽  
pp. 23-31 ◽  
Author(s):  
M. Palummo ◽  
G. Onida ◽  
R. Del Sole
Keyword(s):  
Optical Properties ◽  
Germanium Nanocrystals

Defects in Germanium Nanocrystals Produced by Ion Implantation

2013 ◽  
Vol 709 ◽  
pp. 148-152
Author(s):  
Yu Juan Zhang ◽  
Lei Shang
Keyword(s):  
Electron Microscopy ◽  
Light Emission ◽  
Stacking Faults ◽  
Implantation Dose ◽  
Defect Structures ◽  
High Temperature Annealing ◽  
Planar Defects ◽  
Transmission Electron ◽  
Microstructural Defects ◽  
Germanium Nanocrystals

Germanium nanocrystals (Ge-nc) were produced by the implantation of Ge+ into a SiO2 film deposited on (100) Si, followed by a high-temperature annealing. High-resolution transmission electron microscopy (HRTEM) has been used to investigate the defect structures inside the Ge-nc produced by different implantation doses (1×1016, 2×1016, 4×1016 and 8×1016 cm-2). It has been found that the planar defects such as nanotwins and stacking faults (SFs) are dominant in Ge-nc (60%) for the samples with implantation doses higher than 2×1016 cm-2, while for the sample with an implantation dose lower than 1×1016 cm-2, fewer planar defects are observed in the Ge-nc (20%). The percentages of nanotwins in the planar defects are 87%, 77%, 67% and 60% in four samples, respectively. The twinning structures include single twins, double twins and multiple twins. We also found that there are only SFs in some nanocrystals, and in others the SFs coexist with twins. These microstructural defects are expected to play an important role in the light emission from the Ge-nc.

Memory and Coulomb blockade effects in germanium nanocrystals embedded in amorphous silicon on silicon dioxide

2007 ◽  
Vol 102 (9) ◽  
pp. 093704 ◽  
Author(s):  
K. Gacem ◽  
A. El Hdiy ◽  
M. Troyon ◽  
I. Berbezier ◽  
P. D. Szkutnik ◽  
...  
Keyword(s):  
Silicon Dioxide ◽  
Amorphous Silicon ◽  
Coulomb Blockade ◽  
Germanium Nanocrystals
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