scholarly journals Identifying and characterising the different structural length scales in liquids and glasses: an experimental approach

2013 ◽  
Vol 15 (37) ◽  
pp. 15286 ◽  
Author(s):  
Philip S. Salmon ◽  
Anita Zeidler
Keyword(s):  
Experimental Approach ◽  
Length Scales ◽  
Structural Length

scholarly journals Pulsed 86Sr-labeling and NanoSIMS imaging to study coral biomineralization at ultra-structural length scales

Coral Reefs ◽  
2012 ◽  
Vol 31 (3) ◽  
pp. 741-752 ◽  
Author(s):  
C. Brahmi ◽  
I. Domart-Coulon ◽  
L. Rougée ◽  
D. G. Pyle ◽  
J. Stolarski ◽  
...  
Keyword(s):  
Length Scales ◽  
Structural Length

scholarly journals What structural length scales can be detected by the spectral variance of a microscope image?

2014 ◽  
Vol 39 (15) ◽  
pp. 4290 ◽  
Author(s):  
Lusik Cherkezyan ◽  
Hariharan Subramanian ◽  
Vadim Backman
Keyword(s):  
Length Scales ◽  
Microscope Image ◽  
Spectral Variance ◽  
Structural Length

Strength Variations during Mechanical Alloying Through the Nanostructural Range

2003 ◽  
Vol 791 ◽  
Author(s):  
Christopher A. Schuh ◽  
David T. Schoen ◽  
Alan C. Lund
Keyword(s):  
Mechanical Alloying ◽  
Domain Size ◽  
Phase Evolution ◽  
Length Scale ◽  
Structure Property ◽  
Final State ◽  
Length Scales ◽  
Structure Property Relationship ◽  
Chemical Mixing ◽  
Structural Length

ABSTRACTDuring processes of mechanical alloying the characteristic structural length scales of an alloy, including the phase domain size and the crystallite grain size, decrease gradually to a nanocrystalline or even amorphous final state. This method therefore allows a unique avenue to explore the structure-property relationship over several orders of magnitude in length scale. In this work we have considered an ideal equiatomic Ti-Zr system deformed through multiple cold-rolling passes to refine the structural length scales into the nanometer range. The variation of the hardness of the system with decreasing length scale is discussed in terms of traditional Hall-Petch scaling, chemical mixing and the phase evolution of the system, as well as other possible contributions to the hardness variations during processing.

Rescaling of structural length scales for “soft effective segment” representations of polymers in good solvent

Soft Matter ◽  
2011 ◽  
Vol 7 (11) ◽  
pp. 5255 ◽  
Author(s):  
Ivan Coluzza ◽  
Barbara Capone ◽  
Jean-Pierre Hansen
Keyword(s):  
Length Scales ◽  
Structural Length

Advances in our understanding of the structure and functionality of edible fats and fat mimetics

Soft Matter ◽  
2020 ◽  
Vol 16 (2) ◽  
pp. 289-306 ◽  
Author(s):  
Alejandro G. Marangoni ◽  
John P. M. van Duynhoven ◽  
Nuria C. Acevedo ◽  
Reed A. Nicholson ◽  
Ashok R. Patel
Keyword(s):  
Fractal Aggregates ◽  
Length Scales ◽  
Edible Fats ◽  
Fat Crystal Network ◽  
Crystal Network ◽  
Structural Length

Structural length scales within a fat crystal network, from TAG molecules packing into lamellae, crystalline nanoplatelets and fractal aggregates of nanoplatelets.

Mesoscopic Structural Length Scales in P3HT/PCBM Mixtures Remain Invariant for Various Processing Conditions

2013 ◽  
Vol 25 (14) ◽  
pp. 2812-2818 ◽  
Author(s):  
Sameer Vajjala Kesava ◽  
Rijul Dhanker ◽  
Derek R. Kozub ◽  
Kiarash Vakhshouri ◽  
U Hyeok Choi ◽  
...  
Keyword(s):  
Processing Conditions ◽  
Length Scales ◽  
Structural Length

Experimental Determination of the Effective Resolution Limit in Thick Specimens at High Voltages

1975 ◽  
Vol 33 ◽  
pp. 664-665
Author(s):  
Mircea Fotino
Keyword(s):  
Experimental Approach ◽  
Chromatic Aberration ◽  
Resolving Power ◽  
Biological Research ◽  
Specimen Thickness ◽  
Resolution Limit ◽  
High Voltage Electron Microscopy ◽  
Voltage Electron ◽  
Resolution Level

The use of thick specimens (0.5 μm to 5.0 μm or more) is one of the most resourceful applications of high-voltage electron microscopy in biological research. However, the energy loss experienced by the electron beam in the specimen results in chromatic aberration and thus in a deterioration of the effective resolving power. This sets a limit to the maximum usable specimen thickness when investigating structures requiring a certain resolution level.An experimental approach is here described in which the deterioration of the resolving power as a function of specimen thickness is determined. In a manner similar to the Rayleigh criterion in which two image points are considered resolved at the resolution limit when their profiles overlap such that the minimum of one coincides with the maximum of the other, the resolution attainable in thick sections can be measured by the distance from minimum to maximum (or, equivalently, from 10% to 90% maximum) of the broadened profile of a well-defined step-like object placed on the specimen.

Malfunctional Reorganization in the Developing Limbo-Prefrontal System in Animals: Implications for Human Psychoses?

2001 ◽  
Vol 12 (1) ◽  
pp. 8-14
Author(s):  
Gertraud Teuchert-Noodt ◽  
Ralf R. Dawirs
Keyword(s):  
Prefrontal Cortex ◽  
Mental Disorders ◽  
Dentate Gyrus ◽  
Cognitive Functions ◽  
Experimental Approach ◽  
Regulatory Mechanisms ◽  
Hippocampal Dentate Gyrus ◽  
Non Invasive ◽  
Invasive Method ◽  
Activity Dependent

Abstract: Neuroplasticity research in connection with mental disorders has recently bridged the gap between basic neurobiology and applied neuropsychology. A non-invasive method in the gerbil (Meriones unguiculus) - the restricted versus enriched breading and the systemically applied single methamphetamine dose - offers an experimental approach to investigate psychoses. Acts of intervening affirm an activity dependent malfunctional reorganization in the prefrontal cortex and in the hippocampal dentate gyrus and reveal the dopamine position as being critical for the disruption of interactions between the areas concerned. From the extent of plasticity effects the probability and risk of psycho-cognitive development may be derived. Advance may be expected from insights into regulatory mechanisms of neurogenesis in the hippocampal dentate gyrus which is obviously to meet the necessary requirements to promote psycho-cognitive functions/malfunctions via the limbo-prefrontal circuit.

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