scholarly journals Light Localization and Stimulated Emission in InGaN/GaN Nanocolumns

2015 ◽  
Vol 76 ◽  
pp. 68-72
Author(s):  
Y. Inose ◽  
H. Ueda ◽  
N. Shimosako ◽  
K. Ema ◽  
Y. Igawa ◽  
...  
Keyword(s):  
Stimulated Emission ◽  
Light Localization

Stimulated emission due to light localization in the bandgap of disordered opals

2004 ◽  
Vol 1 (6) ◽  
pp. 1522-1530 ◽  
Author(s):  
S. G. Romanov ◽  
M. A. Kaliteevski ◽  
C. M. Sotomayor Torres ◽  
J. Manzanares Martinez ◽  
D. Cassagne ◽  
...  
Keyword(s):  
Stimulated Emission ◽  
Light Localization

Fluorescence properties and stimulated emission in substituted europium chelates

1967 ◽  
Vol 64 ◽  
pp. 173-182 ◽  
Author(s):  
Erhard J. Schimitschek ◽  
Richard B. Nehrich Jr ◽  
John A. Trias
Keyword(s):  
Stimulated Emission ◽  
Fluorescence Properties ◽  
Europium Chelates

RELATION BETWEEN THE STRIATION AND THE STIMULATED EMISSION IN A He-Ne LASER

1979 ◽  
Vol 40 (C7) ◽  
pp. C7-389-C7-390
Author(s):  
H. Amemiya ◽  
T. Dote ◽  
S. Kawamoto
Keyword(s):  
Stimulated Emission

Laser Oscillation in Aggregates of Ultrasmall Si Nanoparticles

2002 ◽  
Vol 728 ◽  
Author(s):  
Munir H. Nayfeh
Keyword(s):  
Stimulated Emission ◽  
Gaussian Beams ◽  
Single Particles ◽  
Nonlinear Characteristics ◽  
Femtosecond Radiation ◽  
Highly Nonlinear ◽  
Line Narrowing ◽  
Si Nanoparticles ◽  
Speckle Patterns ◽  
Spectral Line Narrowing

AbstractWe dispersed electrochemically etched Si into ultrabright ultrasmall nanoparticles, with brightness higher than fluorescein or rhodamine. The emission from single particles is readily detectable. Aggregates or films of the particles exhibit emission with highly nonlinear characteristics. We observe directed blue beams at ∼ 410 nm between faces of aggregates excited by femtosecond radiation at 780 nm; and at ∼ 610 nm from aggregates of red luminescent Si nanoparticles excited by radiation at 550-570 nm from a mercury lamp. Intense directed Gaussian beams, a pumping threshold, spectral line narrowing, and speckle patterns manifest the emission. The results are analyzed in terms of population inversion and stimulated emission in quantum confinement-induced Si-Si dimer phase, found only on ultrasmall Si nanoparticles. This microlasing constitutes an important step towards the realization of a laser on a chip.

Recent Advances on Amplified Stimulated Emission of Lead Halide Perovskite Micro/Nanostructures

2020 ◽  
Vol 41 (12) ◽  
pp. 1479-1489
Author(s):  
Ling HUANG ◽  
◽  
Hao DONG ◽  
Feng-yan JIA ◽  
Ling-dong SUN ◽  
...  
Keyword(s):  
Stimulated Emission ◽  
Recent Advances ◽  
Halide Perovskite ◽  
Amplified Stimulated Emission ◽  
Lead Halide

Atomic Force Microscopy: The Characterisation of Amyloid Protein Structure in Pathology

2020 ◽  
Vol 19 (32) ◽  
pp. 2958-2973 ◽  
Author(s):  
Maria J.E. Visser ◽  
Etheresia Pretorius
Keyword(s):  
Atomic Force Microscopy ◽  
Protein Structure ◽  
Stimulated Emission ◽  
Laser Scanning Microscopy ◽  
Biological Research ◽  
Confocal Laser ◽  
Force Microscopy ◽  
Atomic Force ◽  
Parametric Data ◽  
Parkinson’S Diseases

: Proteins are versatile macromolecules that perform a variety of functions and participate in virtually all cellular processes. The functionality of a protein greatly depends on its structure and alterations may result in the development of diseases. Most well-known of these are protein misfolding disorders, which include Alzheimer’s and Parkinson’s diseases as well as type 2 diabetes mellitus, where soluble proteins transition into insoluble amyloid fibrils. Atomic Force Microscopy (AFM) is capable of providing a topographical map of the protein and/or its aggregates, as well as probing the nanomechanical properties of a sample. Moreover, AFM requires relatively simple sample preparation, which presents the possibility of combining this technique with other research modalities, such as confocal laser scanning microscopy, Raman spectroscopy and stimulated emission depletion microscopy. In this review, the basic principles of AFM are discussed, followed by a brief overview of how it has been applied in biological research. Finally, we focus specifically on its use as a characterisation method to study protein structure at the nanoscale in pathophysiological conditions, considering both molecules implicated in disease pathogenesis and the plasma protein fibrinogen. In conclusion, AFM is a userfriendly tool that supplies multi-parametric data, rendering it a most valuable technique.

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