Results 231 to 240 of about 100,931 (277)

Emission properties of organic random lasers

physica status solidi (c), 2004
We report on random lasing in a neat film of substituted quinquethienyl S,S-dioxide. Despite the absence of intentionally introduced scatterers random lasing with 5 A Full Width at Half Maximum is observed. The angular distribution of random lasing modes is studied through angle resolved emission measurements demonstrating that random lasing emission ...
ANNI, Marco, S. LATTANTE, GIGLI, Giuseppe, G. BARBARELLA, L. FAVARETTO, CINGOLANI, Roberto   +5 more
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Self-Organization of Quasi-Random Copolymers

Doklady Physical Chemistry, 2002
The theory of integral RISM-equations is applied to describe the equilibrium structure of a quasi random protein-like polymer. Interaction of collective correlation functions is given by the Ornstein-Zernike nonlinear integral equation.
Zherenkova, L. V., Talitskikh, S. K., Khalatur, P. G., Khokhlov, A. R.   +3 more
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Organized Randomness

Science Signaling, 2010
The self-organization of phosphatidylinositol lipids along the membranes of Dictyostelium cells enables spontaneous cell migration.
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Organic polymer composite random laser operating underwater

Optics Letters, 2012
In this work, an organic composite polymer random laser (RL) operating underwater has been studied. The RL structure used in the test is a rod-shaped composite, formed by a mixture of an organic green light-emitting polymer and a UV transparent polymer matrix.
Chen, Yujie, Zhang, Yanfeng, Laurand, Nicolas, Kanibolotsky, Alex L., Gu, Erdan, Skabara, Peter J., Dawson, Martin D.   +6 more
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Random Organic Nanolaser Arrays for Cryptographic Primitives

Advanced Materials, 2019
AbstractNext‐generation high‐security cryptography and communication call for nondeterministic generation and efficient authentication of unclonable bit sequences. Physical unclonable functions using inherent randomness in material and device fabrication process have emerged as promising candidates for realizing one‐way cryptographic systems that avoid
Jiangang Feng, Wen Wen, Xiao Wei, Xiangyu Jiang, Moyuan Cao, Xuedong Wang, Xiqi Zhang, Lei Jiang, Yuchen Wu   +8 more
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The Organization of Visual Objects: Randomness

Perceptual and Motor Skills, 1997
A method was described for determining whether or not a pattern of visual objects is arranged randomly. Based on distance to nearest neighbor, it includes three conditions and is designed to avoid Type I errors. Examples were given, and comparisons were made with other methods.
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Perception of organization in a random stimulus

Computer Vision, Graphics, and Image Processing, 1985
This paper describes an experimental test of the role of perceptual organization in the perception and reproduction of a visual stimulus. A perceptually random stimulus was presented to subjects who were to reproduce it. A procedure of serial reproductions was used and the perceptual organization inherent in the subjects' reproductions was quantified ...
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Organic and Bio-mimetic Random Lasers

Nonlinear Optics, 2015
We report on different novel types of Random Lasers in which the optical cavity is merely represented by a random assembly of micro- and nano- metric scattering structures: paper sheets, solid organic dye and biotemplated materials.
Neda Ghofraniha, Claudio Conti
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Random organization in periodically driven systems

Nature Physics, 2008
Random collisions between particles usually generate disorder in a system. But under certain conditions, particles in suspended in a liquid subjected to periodic shear forces can collide in a way that leads to fewer subsequent collisions and less disorder.
Corte, Laurent, Chaikin, Paul M., Gollub, Jerry P., Pine, David J.   +3 more
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Random Factors in the Construction Organization

Applied Mechanics and Materials, 2012
The construction organization usually takes the Critical Path Method (CPM ) used in the mathematics graph theory, which is a kind of classic system engineering analysis method, was introduced to China by Hua Luogeng – a mathematician, and originally called the Overall Planning Method.
Zhong Yi, Cheng Zhi Yuan
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