Photonic metamaterial surfaces for digital resolution biosensor microscopies using enhanced absorption, scattering, and emission

2021 ◽  
Author(s):  
Brian T. Cunningham ◽  
Taylor D. Canady ◽  
Bin Zhao ◽  
Shreya Ghosh ◽  
Nantao Li ◽  
...  
Keyword(s):  
Enhanced Absorption ◽  
Digital Resolution

Electrochemical preparation of vertically aligned, hollow CdSe nanotubes and their p–n junction hybrids with electrodeposited Cu2O

Nanoscale ◽  
2014 ◽  
Vol 6 (15) ◽  
pp. 9148-9156 ◽  
Author(s):  
Joyashish Debgupta ◽  
Ramireddy Devarapalli ◽  
Shakeelur Rahman ◽  
Manjusha V. Shelke ◽  
Vijayamohanan K. Pillai
Keyword(s):  
Charge Carriers ◽  
Type Ii ◽  
Electrochemical Preparation ◽  
Enhanced Absorption ◽  
Absorption Of Light ◽  
Vertically Aligned ◽  
P Type

Heterojunction (type II) of self standing, vertically aligned CdSe NTs (n-type) with electrodeposited Cu2O (p-type) exhibits excellent photoresponse, resulting from enhanced absorption of light and faster transport of photogenerated charge carriers by CdSe NTs.

scholarly journals The Influence of Gut Microbiota on the Cardiovascular System Under Conditions of Obesity and Chronic Stress

2021 ◽  
Vol 23 (5) ◽  
Author(s):  
Piotr Dubinski ◽  
Katarzyna Czarzasta ◽  
Agnieszka Cudnoch-Jedrzejewska
Keyword(s):  
Gut Microbiota ◽  
Cardiovascular System ◽  
Chronic Stress ◽  
Human Body ◽  
High Fat Diet ◽  
Intestinal Barrier ◽  
Microbial Composition ◽  
Enhanced Absorption ◽  
Bacterial Accumulation ◽  
Metabolic Endotoxemia

Abstract Purpose of Review Based on the available data, it can be assumed that microbiota is an integral part of the human body. The most heavily colonized area of the human body is the gut, with bacterial accumulation ranging from 101–103 cells/g in the upper intestine to 1011–1012 cells/g in the colon. However, colonization of the gut is not the same throughout, as it was shown that there are differences between the composition of the microbiota in the intestine lumen and in the proximity of the mucus layer. Recent Findings Gut microbiota gradient can be differentially regulated by factors such as obesity and chronic stress. In particular, a high fat diet influences the gut microbial composition. It was also found that chronic stress may cause the development of obesity and thus change the organization of the intestinal barrier. Recent research has shown the significant effect of intestinal microflora on cardiovascular function. Enhanced absorption of bacterial fragments, such as lipopolysaccharide (LPS), promotes the onset of “metabolic endotoxemia,” which could activate toll-like receptors, which mediates an inflammatory response and in severe cases could cause cardiovascular diseases. It is presumed that the intestinal microbiota, and especially its metabolites (LPS and trimethylamine N-oxide (TMAO)), may play an important role in the pathogenesis of arterial hypertension, atherosclerosis, and heart failure. Summary This review focuses on how gut microbiota can change the morphological and functional activity of the cardiovascular system in the course of obesity and in conditions of chronic stress.

scholarly journals Enhanced absorption for MXene/Au-based metamaterials

2021 ◽  
Vol 23 ◽  
pp. 104072
Author(s):  
Wei Cui ◽  
Lingqiao Li ◽  
Weiwei Xue ◽  
Hui Xu ◽  
Zhihui He ◽  
...  
Keyword(s):  
Enhanced Absorption

Enhanced Absorption of Single Silicon Nanowire with Si3N4 Shell for Photovoltaic Applications

2015 ◽  
Vol 1090 ◽  
pp. 173-177 ◽  
Author(s):  
Wen Fu Liu ◽  
Hua Li Hao
Keyword(s):  
Light Scattering ◽  
Light Absorption ◽  
Calculated Result ◽  
Scattering Theory ◽  
Enhancement Factor ◽  
Shell Thickness ◽  
Silicon Nanowire ◽  
Enhanced Absorption ◽  
Photovoltaic Applications

Based on the Lorenz-Mie light scattering theory, we have calculated the light absorption of single silicon nanowire with Si3N4coating, and compared with pure single silicon nanowire. The calculated result indicates that there exists an enhanced absorption in the Si3N4-coated silicon nanowire and shows a great photocurrent enhancement factor (~70%) for the coaxial NW with the shell thickness of ~70 nm. For a special shell thickness (175 nm) in the Si3N4-coated silicon nanowire forr= 150 nm, the enhancement comes up to ~98.45%.

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