Equilibrium size distribution and phase separation of multivalent, molecular assemblies in dilute solution

Soft Matter ◽  
2020 ◽  
Vol 16 (23) ◽  
pp. 5458-5469 ◽  
Author(s):  
Dan Deviri ◽  
Samuel A. Safran
Keyword(s):  
Phase Separation ◽  
Size Distribution ◽  
Self Assembly ◽  
Dilute Solution ◽  
Lattice Animals ◽  
Dilute Solutions ◽  
Molecular Assemblies ◽  
Equilibrium Size

Equilibrium self-assembly, gelation, and phase separation of multivalent molecules in dilute solutions analyzed using statistics of lattice animals depicted here.

scholarly journals Photoacoustics for listening to Metal Nanoparticles Super-Aggregates

2021 ◽  
Author(s):  
Roberto Li Voti ◽  
Grigore Leahu ◽  
Concita Sibilia ◽  
Roberto Matassa ◽  
Giuseppe Familiari ◽  
...  
Keyword(s):  
Metal Nanoparticles ◽  
Size Distribution ◽  
Packing Density ◽  
Self Assembly ◽  
Détection Signal ◽  
Photoacoustic Detection ◽  
New Strategy ◽  
Aggregate Packing ◽  
Detection Signal

Photoacoustic detection signal has been used to build a new strategy to determine the mesoscale self-assembly of metal nanoparticles in terms of size distribution and aggregate packing density (metal nanoparticles...

scholarly journals Nucleation of Ga droplets self-assembly on GaAs(111)A substrates

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Artur Tuktamyshev ◽  
Alexey Fedorov ◽  
Sergio Bietti ◽  
Stefano Vichi ◽  
Riccardo Tambone ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Size Distribution ◽  
Self Assembly ◽  
Cluster Size ◽  
Droplet Size Distribution ◽  
Local Environment ◽  
The Self ◽  
Critical Cluster ◽  
Droplet Nucleation ◽  
High Degree

AbstractWe investigated the nucleation of Ga droplets on singular GaAs(111)A substrates in the view of their use as the seeds for the self-assembled droplet epitaxial quantum dots. A small critical cluster size of 1–2 atoms characterizes the droplet nucleation. Low values of the Hopkins-Skellam index (as low as 0.35) demonstrate a high degree of a spatial order of the droplet ensemble. Around $$350\,^{\circ }\hbox {C}$$ 350 ∘ C the droplet size distribution becomes bimodal. We attribute this observation to the interplay between the local environment and the limitation to the adatom surface diffusion introduced by the Ehrlich–Schwöbel barrier at the terrace edges.

Dispersion, Phase Separation, and Self-Assembly of Polymer-Grafted Nanorod Composites

2017 ◽  
Vol 50 (21) ◽  
pp. 8816-8826 ◽  
Author(s):  
Vaishnavi Gollanapalli ◽  
Anirudh Manthri ◽  
Uma K. Sankar ◽  
Mukta Tripathy
Keyword(s):  
Phase Separation ◽  
Self Assembly ◽  
Dispersion Phase

The use of methyl green as a histochemical reagent

1965 ◽  
Vol s3-106 (73) ◽  
pp. 3-13
Author(s):  
JOHN R. BAKER ◽  
ELIZABETH G. M. WILLIAMS
Keyword(s):  
Connective Tissue ◽  
Malachite Green ◽  
Helix Aspersa ◽  
Common Snail ◽  
Methyl Green ◽  
Dilute Solution ◽  
Dilute Solutions ◽  
The Common ◽  
Snail Helix Aspersa

The cation of methyl green carriea two poaitive charges, that of malachite green only one; but the two dyes behave towards tissue-constituents in almost exactly the same way. These dyes are not specific for chromatin. They colour certain objects that are devoid of DNA, even when they are used in very dilute solution. The granules of cells called Körnchenzellen in the connective tissue of the common snail, Helix aspersa, are strongly coloured by both dyes from very dilute solutions, and thus provide a striking instance of the unspecificity of these dyes. Malachite green, which is stable and free from contamination by metachromstic impurities, can advantageously replace the methyl green commonly used in mixtures with pyronine. It is suggested that pyronine may have a greater capacity for penetrating into close-textured objects, such ss nucleoli and ribosomes, than methyl and malachite greens.

scholarly journals Water vapor induced self-assembly of islands/honeycomb structure by secondary phase separation in polystyrene solution with bimodal molecular weight distribution

2021 ◽  
Author(s):  
Maciej Łojkowski ◽  
Adrian Chlanda ◽  
Emilia Choińska ◽  
Wojciech Swieszkowski
Keyword(s):  
Molecular Weight ◽  
Phase Separation ◽  
Molecular Weight Distribution ◽  
Weight Distribution ◽  
Self Assembly ◽  
Secondary Phase ◽  
Honeycomb Structure ◽  
Polymer Chains ◽  
Molecular Weights ◽  
Secondary Phase Separation

<p>The formation of complex structures in thin films is of interest in many fields. Segregation of polymer chains of different molecular weights is a well-known process. However, here, polystyrene with bimodal molecular weight distribution, but no additional chemical modification was used. It was proven that at certain conditions, the phase separation occurred between two fractions of bimodal polystyrene/methyl ethyl ketone solution. The films were prepared by spin-coating, and the segregation between polystyrene phases was investigated by force spectroscopy. Next, water vapour induced secondary phase separation was investigated. The introduction of moist airflow induced the self-assembly of the lower molecular weight into islands and the heavier fraction into a honeycomb. As a result, an easy, fast, and effective method of obtaining island/honeycomb morphologies was demonstrated. The possible mechanisms of the formation of such structures were discussed.</p>

scholarly journals Self-assembly of model short triblock amphiphiles in dilute solution

Soft Matter ◽  
2018 ◽  
Vol 14 (16) ◽  
pp. 3171-3181 ◽  
Author(s):  
G. Zaldivar ◽  
M. B. Samad ◽  
M. Conda-Sheridan ◽  
M. Tagliazucchi
Keyword(s):  
Self Assembly ◽  
Molecular Theory ◽  
Dilute Solution

We present a molecular theory to study the morphology diagrams of short diblock and triblock amphiphiles in dilute solution.

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