Comparison and analysis of Al0.7InAsSb avalanche photodiodes with different background doping polarities

2021 ◽  
Vol 119 (3) ◽  
pp. 032101
Author(s):  
Dekang Chen ◽  
J. Andrew McArthur ◽  
Stephen D. March ◽  
Xingjun Xue ◽  
Andrew H. Jones ◽  
...  
Keyword(s):  
Avalanche Photodiodes ◽  
Background Doping ◽  
Comparison And Analysis

Enhanced low-noise gain from InAs avalanche photodiodes with reduced dark current and background doping

2012 ◽  
Vol 101 (15) ◽  
pp. 151124 ◽  
Author(s):  
S. J. Maddox ◽  
W. Sun ◽  
Z. Lu ◽  
H. P. Nair ◽  
J. C. Campbell ◽  
...  
Keyword(s):  
Dark Current ◽  
Avalanche Photodiodes ◽  
Low Noise ◽  
Background Doping

High‐speed InP/Ga0.47In0.53As superlattice avalanche photodiodes with very low background doping grown by continuous trichloride vapor‐phase epitaxy

1986 ◽  
Vol 60 (7) ◽  
pp. 2609-2612 ◽  
Author(s):  
V. D. Mattera ◽  
F. Capasso ◽  
J. Allam ◽  
A. L. Hutchinson ◽  
J. Dick ◽  
...  
Keyword(s):  
Vapor Phase ◽  
High Speed ◽  
Avalanche Photodiodes ◽  
Vapor Phase Epitaxy ◽  
Low Background ◽  
Background Doping

Amorphous Si/SiC phototransistors and avalanche photodiodes

1991 ◽  
Vol 138 (3) ◽  
pp. 226 ◽  
Author(s):  
C.Y. Chang ◽  
J.W. Hong ◽  
Y.K. Fang
Keyword(s):  
Avalanche Photodiodes ◽  
Amorphous Si

The Effects of the sphragis on male and female genitalia in Acraea (Nymphalidae) butterflies

2020 ◽  
Vol 22 ◽  
Author(s):  
Shannon L Summers ◽  
Akito Y Kawahara ◽  
Ana P. S. Carvalho
Keyword(s):  
Interspecific Variation ◽  
Sperm Storage ◽  
Male Mating ◽  
Museum Collections ◽  
Storage Organ ◽  
Mating Plug ◽  
Males And Females ◽  
Comparison And Analysis ◽  
Imagej Software ◽  
Sexually Antagonistic Coevolution

Male mating plugs have been used in many species to prevent female re-mating and sperm competition. One of the most extreme examples of a mating plug is the sphragis, which is a large, complex and externalized plug found only in butterflies. This structure is found in many species in the genus Acraea (Nymphalidae) and provides an opportunity for investigation of the effects of the sphragis on the morphology of the genitalia, which is poorly understood. This study aims to understand morphological interspecific variation in the genitalia of Acraea butterflies. Using specimens from museum collections, abdomen dissections were conducted on 19 species of Acraea: 9 sphragis bearing and 10 non-sphragis bearing species. Genitalia imaging was performed for easier comparison and analysis and measurements of genitalia structures was done using ImageJ software. Some distinguishing morphological features in the females were found. The most obvious difference is the larger and more externalized copulatory opening in sphragis bearing species, with varying degrees of external projections. Females of the sphragis bearing species also tend to have a shorter ductus (the structure that connects the copulatory opening with the sperm storage organ) than those without the sphragis. These differences may be due to a sexually antagonistic coevolution between the males and females, where the females evolve larger and more difficult to plug copulatory openings and the males attempt to prevent re-mating with the sphragis.

Comparison and Analysis of Algorithms Used for Detecting Slums in Satellite Images

2019 ◽  
Author(s):  
Pallavi Saindane ◽  
Gayatri Ganapathy ◽  
Neha Prabhavalkar ◽  
Nilesh Bhatia ◽  
Aishwarya Vaidya
Keyword(s):  
Satellite Images ◽  
Analysis Of Algorithms ◽  
Comparison And Analysis
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