Examining the self-assembly of patchy alkane-grafted silica nanoparticles using molecular simulation

2021 ◽  
Vol 154 (3) ◽  
pp. 034903
Author(s):  
Nicholas C. Craven ◽  
Justin B. Gilmer ◽  
Caroline J. Spindel ◽  
Andrew Z. Summers ◽  
Christopher R. Iacovella ◽  
...  
Keyword(s):  
Silica Nanoparticles ◽  
Molecular Simulation ◽  
Self Assembly ◽  
The Self

Surface Effect on the Self-Assembly of Nanofibers Revealed by in Situ AFM Imaging and Molecular Simulation

2019 ◽  
Vol 123 (14) ◽  
pp. 9292-9297 ◽  
Author(s):  
Yantao Chen ◽  
Shan Xue ◽  
Qing Xia ◽  
Hongkun Li ◽  
Qiuming Liu ◽  
...  
Keyword(s):  
Molecular Simulation ◽  
Self Assembly ◽  
Surface Effect ◽  
The Self ◽  
Afm Imaging

scholarly journals Self-assembly of peptide amphiphiles by vapor pressure osmometry and dissipative particle dynamics

RSC Advances ◽  
2018 ◽  
Vol 8 (47) ◽  
pp. 26461-26468
Author(s):  
Taiga Seki ◽  
Noriyoshi Arai ◽  
Donguk Suh ◽  
Taku Ozawa ◽  
Tomoko Shimada ◽  
...  
Keyword(s):  
Vapor Pressure ◽  
Molecular Simulation ◽  
Self Assembly ◽  
Dissipative Particle Dynamics ◽  
Particle Dynamics ◽  
The Self ◽  
Peptide Amphiphiles ◽  
Vapor Pressure Osmometry ◽  
Water Interaction ◽  
Assembly Behavior

Vapor pressure osmometry measurements and molecular simulation were carried out to investigate the self-assembly behavior of peptide amphiphiles. The results revealed that the head–water interaction plays an important role for their microstructure.

An insight into the role of riboflavin ligand in the self-assembly of poly(lactic-co-glycolic acid)-based nanoparticles – a molecular simulation and experimental approach

Soft Matter ◽  
2020 ◽  
Vol 16 (22) ◽  
pp. 5250-5260 ◽  
Author(s):  
Sima Rezvantalab ◽  
Mostafa Keshavarz Moraveji ◽  
Mohammad Khedri ◽  
Reza Maleki
Keyword(s):  
Molecular Simulation ◽  
Self Assembly ◽  
Targeted Delivery ◽  
Glycolic Acid ◽  
Experimental Approach ◽  
The Self ◽  
Insight Into

Nanoparticles (NPs) used for targeted delivery purposes are rapidly gaining importance in diagnostic and therapeutic fields.

Stability of anti-reflection coatings via the self-assembly encapsulation of silica nanoparticles by diazo-resins

2015 ◽  
Vol 87 ◽  
pp. 271-277 ◽  
Author(s):  
Jonathan S. Metzman ◽  
Jason I. Ridley ◽  
Moataz B. Khalifa ◽  
James R. Heflin
Keyword(s):  
Silica Nanoparticles ◽  
Self Assembly ◽  
The Self

Molecular Simulation of the Self-Agglomeration of Carbon Nanostructures in Various Chemical Environments

2012 ◽  
Author(s):  
Soumik Banerjee
Keyword(s):  
Molecular Simulation ◽  
Self Assembly ◽  
Carbon Nanostructures ◽  
Effective Means ◽  
Cost Effective ◽  
The Self ◽  
Spherical Particles ◽  
Dynamical Process ◽  
Agglomeration Process ◽  
Wide Range

Self-assembly of carbon nanostructures in solutions provides a cost-effective means to synthesize uniform vertically-aligned nanostructures with specific morphologies including shapes such as wires, sheets and spherical particles. In addition to facilitating the synthesis of bulk carbon nanomaterial, a complete understanding of the agglomeration mechanics also provides a means to deposit uniform layers of carbon nanostructures on top of substrates to produce molecularly-tailored composites with specific mechanical properties. Self-assembly is a complex dynamical process that involves the interaction between the nanoparticle precursors, the transport properties of the individual precursor molecules as well as the precursor-solvent interactions. Depending on the chemical nature of the solvent used during the process various nanostructures of varying shapes and morphologies can be synthesized starting from individual buckyballs and nanotubes. However, despite its wide range of applications, there is a lack of understanding of the self-assembly of carbon nanoparticles. Some of the key factors that govern the agglomeration process are the π-π interaction of the aromatic carbon nanostructures and their interaction with the solvent molecules. A predictive model for self-assembly, that relates the above parameters to the morphology, therefore needs to account for the specific molecular interactions. We present molecular simulation results that incorporate the above effects and shows that the nature of association of the nanoparticle precursors determines the shape and size of the agglomerate. Furthermore, our results show the dependency of the agglomerate size on the concentration of precursors as well as the ambient temperature.

The Nature of Rapidly Extracted Phycocyanin from the Blue-Green Alga Plectonema Boryanum

1971 ◽  
Vol 29 ◽  
pp. 366-367
Author(s):  
M. Kessel ◽  
R. MacColl
Keyword(s):  
Self Assembly ◽  
Analytical Ultracentrifugation ◽  
Uranyl Acetate ◽  
The Self ◽  
Major Protein ◽  
Subunit Structure ◽  
Blue Green Alga ◽  
Thin Sections ◽  
Blue Green Algae ◽  
Cacodylate Buffer

The major protein of the blue-green algae is the biliprotein, C-phycocyanin (Amax = 620 nm), which is presumed to exist in the cell in the form of distinct aggregates called phycobilisomes. The self-assembly of C-phycocyanin from monomer to hexamer has been extensively studied, but the proposed next step in the assembly of a phycobilisome, the formation of 19s subunits, is completely unknown. We have used electron microscopy and analytical ultracentrifugation in combination with a method for rapid and gentle extraction of phycocyanin to study its subunit structure and assembly.To establish the existence of phycobilisomes, cells of P. boryanum in the log phase of growth, growing at a light intensity of 200 foot candles, were fixed in 2% glutaraldehyde in 0.1M cacodylate buffer, pH 7.0, for 3 hours at 4°C. The cells were post-fixed in 1% OsO4 in the same buffer overnight. Material was stained for 1 hour in uranyl acetate (1%), dehydrated and embedded in araldite and examined in thin sections.

Interrelationship of the cellular distribution and secretion of regular structure (RS) protein in Bacillus licheniformis nm 105

1992 ◽  
Vol 50 (1) ◽  
pp. 712-713
Author(s):  
Xiaorong Zhu ◽  
Richard McVeigh ◽  
Bijan K. Ghosh
Keyword(s):  
Alkaline Phosphatase ◽  
Bacillus Licheniformis ◽  
Self Assembly ◽  
Gel Electrophoresis ◽  
Culture Supernatant ◽  
Regular Structure ◽  
The Self ◽  
Cellular Distribution ◽  
Structural Protein ◽  
Laboratory Cultures

A mutant of Bacillus licheniformis 749/C, NM 105 exhibits some notable properties, e.g., arrest of alkaline phosphatase secretion and overexpression and hypersecretion of RS protein. Although RS is known to be widely distributed in many microbes, it is rarely found, with a few exceptions, in laboratory cultures of microorganisms. RS protein is a structural protein and has the unusual properties to form aggregate. This characteristic may have been responsible for the self assembly of RS into regular tetragonal structures. Another uncommon characteristic of RS is that enhanced synthesis and secretion which occurs when the cells cease to grow. Assembled RS protein with a tetragonal structure is not seen inside cells at any stage of cell growth including cells in the stationary phase of growth. Gel electrophoresis of the culture supernatant shows a very large amount of RS protein in the stationary culture of the B. licheniformis. It seems, Therefore, that the RS protein is cotranslationally secreted and self assembled on the envelope surface.

Nanoscale Self-Assembly Using Ion and Electron Beam Techniques: A Rapid Review

MRS Advances ◽  
2020 ◽  
Vol 5 (64) ◽  
pp. 3507-3520
Author(s):  
Chunhui Dai ◽  
Kriti Agarwal ◽  
Jeong-Hyun Cho
Keyword(s):  
Electron Beam ◽  
Self Assembly ◽  
Ion Beam ◽  
Three Dimensional ◽  
The Self ◽  
Stress Generation ◽  
Rapid Review ◽  
High Yield ◽  
3D Nanostructures ◽  
Self Assembled

AbstractNanoscale self-assembly, as a technique to transform two-dimensional (2D) planar patterns into three-dimensional (3D) nanoscale architectures, has achieved tremendous success in the past decade. However, an assembly process at nanoscale is easily affected by small unavoidable variations in sample conditions and reaction environment, resulting in a low yield. Recently, in-situ monitored self-assembly based on ion and electron irradiation has stood out as a promising candidate to overcome this limitation. The usage of ion and electron beam allows stress generation and real-time observation simultaneously, which significantly enhances the controllability of self-assembly. This enables the realization of various complex 3D nanostructures with a high yield. The additional dimension of the self-assembled 3D nanostructures opens the possibility to explore novel properties that cannot be demonstrated in 2D planar patterns. Here, we present a rapid review on the recent achievements and challenges in nanoscale self-assembly using electron and ion beam techniques, followed by a discussion of the novel optical properties achieved in the self-assembled 3D nanostructures.

Sign in / Sign up

Export Citation Format

Share Document