Relationship between coherent backscattering cone and the study of the random laser emission of Nd3+:YVO4 powders changing the particle size and applied pressure

2014 ◽  
Author(s):  
J. M. Giehl ◽  
A. R. Miranda ◽  
S. M. Reijn ◽  
F. Butzbach ◽  
N. U. Wetter
Keyword(s):  
Particle Size ◽  
Laser Emission ◽  
Applied Pressure ◽  
Random Laser ◽  
Coherent Backscattering

Dependence of particle size and applied pressure on the random laser emission of Nd3+:YVO4 powders

2013 ◽  
Author(s):  
J. M. Giehl ◽  
A. R. Miranda ◽  
R. J. Ribamar Vieira ◽  
S. M. Reijn ◽  
N. U. Wetter
Keyword(s):  
Particle Size ◽  
Laser Emission ◽  
Applied Pressure ◽  
Random Laser

Using random laser emission to investigate the bonding energy of laser dye dimers

2008 ◽  
Vol 464 (4-6) ◽  
pp. 245-248 ◽  
Author(s):  
C. Tolentino Dominguez ◽  
Emerson de Lima ◽  
P.C. de Oliveira ◽  
F. López Arbeloa
Keyword(s):  
Laser Emission ◽  
Bonding Energy ◽  
Random Laser ◽  
Laser Dye

Reverse mode switching of the random laser emission in dye doped liquid crystals under homogeneous and inhomogeneous electric fields

2016 ◽  
Vol 4 (1) ◽  
pp. 7 ◽  
Author(s):  
M. Shasti ◽  
P. Coutino ◽  
S. Mukherjee ◽  
A. Varanytsia ◽  
T. Smith ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Electric Fields ◽  
Laser Emission ◽  
Mode Switching ◽  
Random Laser ◽  
Reverse Mode

Random laser emission from a paper-based device

2013 ◽  
Vol 1 (48) ◽  
pp. 8128 ◽  
Author(s):  
Ilenia Viola ◽  
Neda Ghofraniha ◽  
Antonella Zacheo ◽  
Valentina Arima ◽  
Claudio Conti ◽  
...  
Keyword(s):  
Laser Emission ◽  
Random Laser

Evaluation of mechanical behavior of soft tissue by means of random laser emission

2013 ◽  
Vol 84 (10) ◽  
pp. 104301 ◽  
Author(s):  
J. C. Briones-Herrera ◽  
N. Cuando-Espitia ◽  
F. M. Sánchez-Arévalo ◽  
J. Hernández-Cordero
Keyword(s):  
Soft Tissue ◽  
Mechanical Behavior ◽  
Laser Emission ◽  
Random Laser

Pressure assisted sintering of Al2O3–Y2O3 glass microspheres: sintering conditions, grain size, and mechanical properties of sintered ceramics

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Anna Prnová ◽  
Jana Valúchová ◽  
Monika Michálková ◽  
Beáta Pecušová ◽  
Milan Parchovianský ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Particle Size ◽  
Hot Pressing ◽  
Pechini Method ◽  
Sol Gel ◽  
Applied Pressure ◽  
Particle Size Analysis ◽  
Size Analysis ◽  
Glass Microspheres ◽  
Amorphous Powders

Abstract Glass microspheres with yttria-alumina eutectic composition (76.8 mol % Al2O3 and 23.2 mol % Y2O3) were prepared by sol-gel Pechini method and flame synthesis with or without subsequent milling. Prepared amorphous powders were studied by X-ray powder diffraction (XRD), particle size analysis (PSA), scanning electron microscopy (SEM) and differential thermal analysis (DTA). Hot pressing (HP), rapid hot pressing (RHP) and spark plasma sintering (SPS) were used to sinter amorphous precursor powders at 1600 °C without holding time (0 min). The preparation process including milling step resulted in amorphous powders with narrower particle size distribution and smaller particle size. All applied pressure assisted sintering techniques resulted in dense bulk samples with fine grained microstructure consisting of irregular α-Al2O3 and Y3Al5O12 (YAG) grains. Milling was beneficial in terms of final microstructure refinement and mechanical properties of sintered materials. A material with the Vickers hardness of HV = (17.1 ± 0.3) GPa and indentation fracture resistance of (4.2 ± 0.2) MPa.m1/2 was prepared from the powder milled for 12 h.

Contact Resistance of Anisotropic Conductive Adhesives

2004 ◽  
Vol 1 (3) ◽  
pp. 194-199 ◽  
Author(s):  
Ranjith Divigalpitiya ◽  
Peter Hogerton
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Applied Pressure ◽  
Surprising Result ◽  
Conductive Adhesives ◽  
Conductive Film ◽  
Plate Separation ◽  
Resistance Forces ◽  
General Size

We analyze the electrical resistance of an anisotropic conductive film (ACF) sandwiched between two conducting plates as a function of applied load by extending a published model of Shi et al [1]. In this analysis we also calculate the plate separation as a function of applied pressure when a collection of particles are trapped between two plates. The case of conducting particles with a general size distribution shows two new important results: (a) we find that the resistance of a bond or a contact is independent of the number of conducting particles under the contact pad when the particle size distribution is Gaussian, which is very much in contrast to the case of uniform sized particles; (b) also, only a very small fraction of conducting particles participate in the electrical conduction of ACF products where the actual particle size distribution can be described as a Gaussian. We show that the experimental data supports the validity of this analysis. While this analysis confirms some of our basic notions of ACF, the surprising result of constant resistance forces us to reevaluate our long-held concept of attaching much importance to the total number of particles in a bond.

Electrical tunable random laser emission from a liquid-crystal infiltrated disordered planar microcavity

2009 ◽  
Vol 34 (3) ◽  
pp. 298 ◽  
Author(s):  
Qinghai Song ◽  
Liying Liu ◽  
Lei Xu ◽  
Yonggang Wu ◽  
Zhanshan Wang
Keyword(s):  
Liquid Crystal ◽  
Laser Emission ◽  
Random Laser ◽  
Planar Microcavity
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