Binding to semiflexible polymers: a novel method to control the structures of small numbers of building blocks

Soft Matter ◽  
2014 ◽  
Vol 10 (38) ◽  
pp. 7661-7668 ◽  
Author(s):  
Dong Zhang ◽  
Linxi Zhang
Keyword(s):  
Elastic Medium ◽  
Building Blocks ◽  
Spatial Arrangement ◽  
Relative Orientation ◽  
Polymer Chains ◽  
Semiflexible Polymers ◽  
Spherical Building ◽  
Local Organization ◽  
Semiflexible Polymer ◽  
Novel Method

Semiflexible polymer chains can serve as an effective soft elastic medium to control the structures of small numbers of building blocks through three different aspects: local organization of two neighbor particles, spatial arrangement of small numbers of building blocks, and the relative orientation of neighboring non-spherical building blocks.

Crystallization of semiflexible polymers in melts and solutions

Soft Matter ◽  
2021 ◽  
Author(s):  
Pavel I. Kos ◽  
Viktor A. Ivanov ◽  
Alexander V. Chertovich
Keyword(s):  
Computer Simulation ◽  
Dissipative Particle Dynamics ◽  
Particle Dynamics ◽  
Simulation Technique ◽  
Polymer Chains ◽  
Semiflexible Polymers ◽  
Semiflexible Polymer ◽  
Computer Simulation Technique ◽  
Poor Solvent

We studied the crystallization of semiflexible polymer chains in melts and poor-solvent solutions with different concentrations by dissipative particle dynamics (DPD) computer simulation technique.

scholarly journals A novel approach to the computation of one-loop three- and four-point functions: I. The real mass case

2019 ◽  
Vol 2019 (11) ◽  
Author(s):  
J Ph Guillet ◽  
E Pilon ◽  
Y Shimizu ◽  
M S Zidi
Keyword(s):  
Building Blocks ◽  
The Real ◽  
Alternative Method ◽  
Novel Approach ◽  
Reduction Methods ◽  
Real Mass ◽  
Novel Method ◽  
Algebraic Reduction ◽  
The One ◽  
Mass Case

Abstract This article is the first of a series of three presenting an alternative method of computing the one-loop scalar integrals. This novel method enjoys a couple of interesting features as compared with the method closely following ’t Hooft and Veltman adopted previously. It directly proceeds in terms of the quantities driving algebraic reduction methods. It applies to the three-point functions and, in a similar way, to the four-point functions. It also extends to complex masses without much complication. Lastly, it extends to kinematics more general than that of the physical, e.g., collider processes relevant at one loop. This last feature may be useful when considering the application of this method beyond one loop using generalized one-loop integrals as building blocks.

scholarly journals Design of True Random Number Circuit with Controllable Frequency

Electronics ◽  
2021 ◽  
Vol 10 (13) ◽  
pp. 1517
Author(s):  
Xinsheng Wang ◽  
Xiyue Wang
Keyword(s):  
Random Number ◽  
Noise Source ◽  
State Of The Art ◽  
Building Blocks ◽  
Encryption Algorithm ◽  
Random Numbers ◽  
Random Number Generators ◽  
Random Telegraph Noise ◽  
Telegraph Noise ◽  
Novel Method

True random number generators (TRNGs) have been a research hotspot due to secure encryption algorithm requirements. Therefore, such circuits are necessary building blocks in state-of-the-art security controllers. In this paper, a TRNG based on random telegraph noise (RTN) with a controllable rate is proposed. A novel method of noise array circuits is presented, which consists of digital decoder circuits and RTN noise circuits. The frequency of generating random numbers is controlled by the speed of selecting different gating signals. The results of simulation show that the array circuits consist of 64 noise source circuits that can generate random numbers by a frequency from 1 kHz to 16 kHz.

scholarly journals Study on the nonlinear vibration of embedded carbon nanotube via the Hamiltonian-based method

2021 ◽  
pp. 146134842110327
Author(s):  
Kang-Jia Wang ◽  
Guo-Dong Wang
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Nonlinear Vibration ◽  
Elastic Medium ◽  
Numerical Results ◽  
Frequency Property ◽  
New Novel ◽  
Novel Method

This article mainly studies the vibration of the carbon nanotubes embedded in elastic medium. A new novel method called the Hamiltonian-based method is applied to determine the frequency property of the nonlinear vibration. Finally, the effectiveness and reliability of the proposed method is verified through the numerical results. The obtained results in this work are expected to be helpful for the study of the nonlinear vibration.

Low Temperature Expansion of Polysulfide Rubbers

1966 ◽  
Vol 39 (2) ◽  
pp. 211-216
Author(s):  
B. A. Hunter ◽  
M. J. Kleinfeld
Keyword(s):  
Room Temperature ◽  
Liquid Mixture ◽  
Cumene Hydroperoxide ◽  
Polymer Chains ◽  
Nitrogen Gas ◽  
Blowing Agents ◽  
Disulfide Linkages ◽  
Novel Method ◽  
Rubber Product ◽  
Liquid Polysulfide Rubbers

Abstract A novel method for producing a cellular cured rubber product at room temperature has been developed. Pourable liquid polysulfide polymers are treated with a conventional oxidizing curative and selected water-sensitive or oxidation-sensitive blowing agents. Standing at ambient temperature the viscous liquid mixture gradually “rises” and cures to form a finely porous cellular rubber product. Conventional curatives employed include oxidizing agents such as lead peroxide and cumene hydroperoxide. These convert terminal or pendant thiol groups in the polysulfide polymer chains to chain-connecting disulfide linkages. Water is a byproduct of the curing reaction. In the presence of water-sensitive blowing agents such as, (1) metal salts of azodicarboxylic acid or, (2) metal hydride compounds the water produced in the cure reacts to form copious amounts of nitrogen or of hydrogen. Alternatively, oxidation-sensitive blowing agents such as p, p′-oxybis-(benzene sulfonyl hydrazide) react directly with the oxidizing curative to form nitrogen gas. The blowing reactions are concurrent with cure and efficient and controllable expansion can be achieved. The unique process offers possible economies and special properties in applications of liquid polysulfide rubbers as potting compounds, joint sealants, solvent resistant forms, and cold casting compounds.

scholarly journals The Assembly of Porphyrin Systems in Well-Defined Nanostructures: An Update

Molecules ◽  
2019 ◽  
Vol 24 (23) ◽  
pp. 4307 ◽  
Author(s):  
Gabriele Magna ◽  
Donato Monti ◽  
Corrado Di Natale ◽  
Roberto Paolesse ◽  
Manuela Stefanelli
Keyword(s):  
Self Assembly ◽  
Energy Transport ◽  
Functional Materials ◽  
Building Blocks ◽  
Spatial Arrangement ◽  
Transport Processes ◽  
Internal Electric Field ◽  
Porphyrin Derivatives ◽  
Molecular Building Blocks ◽  
The Individual

The interest in assembling porphyrin derivatives is widespread and is accounted by the impressive impact of these suprastructures of controlled size and shapes in many applications from nanomedicine and sensors to photocatalysis and optoelectronics. The massive use of porphyrin dyes as molecular building blocks of functional materials at different length scales relies on the interdependent pair properties, consisting of their chemical stability/synthetic versatility and their quite unique physicochemical properties. Remarkably, the driven spatial arrangement of these platforms in well-defined suprastructures can synergically amplify the already excellent properties of the individual monomers, improving conjugation and enlarging the intensity of the absorption range of visible light, or forming an internal electric field exploitable in light-harvesting and charge-and energy-transport processes. The countless potentialities offered by these systems means that self-assembly concepts and tools are constantly explored, as confirmed by the significant number of published articles related to porphyrin assemblies in the 2015–2019 period, which is the focus of this review.

Colloidal magnetic nanocrystal clusters: variable length-scale interaction mechanisms, synergetic functionalities and technological advantages

2015 ◽  
Vol 4 (6) ◽  
Author(s):  
Athanasia Kostopoulou ◽  
Alexandros Lappas
Keyword(s):  
Magnetic Particles ◽  
Critical Role ◽  
Exchange Interactions ◽  
Magnetic Behavior ◽  
Building Blocks ◽  
Spatial Arrangement ◽  
Magnetic Characteristics ◽  
Surface Functionality ◽  
Magnetic Nanocrystal

AbstractMagnetic particles of optimized nanoscale dimensions can be utilized as building blocks to generate colloidal nanocrystal assemblies with controlled size, well-defined morphology, and tailored properties. Recent advances in the state-of-the-art surfactant-assisted approaches for the directed aggregation of inorganic nanocrystals into cluster-like entities are discussed, and the synthesis parameters that determine their geometrical arrangement are highlighted. This review pays attention to the enhanced physical properties of iron oxide nanoclusters, while it also points to their emerging collective magnetic response. The current progress in experiment and theory for evaluating the strength and the role of intra- and inter-cluster interactions is analyzed in view of the spatial arrangement of the component nanocrystals. Numerous approaches have been proposed for the critical role of dipole-dipole and exchange interactions in establishing the nature of the nanoclusters’ cooperative magnetic behavior (be it ferromagnetic or spin-glass like). Finally, we point out why the purposeful engineering of the nanoclusters’ magnetic characteristics, including their surface functionality, may facilitate their use in diverse technological sectors ranging from nanomedicine and photonics to catalysis.

scholarly journals Design and synthesis of a bis-macrocyclic host and guests as building blocks for small molecular knots

2020 ◽  
Vol 16 ◽  
pp. 2314-2321
Author(s):  
Elizabeth A Margolis ◽  
Rebecca J Keyes ◽  
Stephen D Lockey ◽  
Edward E Fenlon
Keyword(s):  
Molecular Weight ◽  
Electrostatic Interactions ◽  
Second Generation ◽  
Building Blocks ◽  
Design And Synthesis ◽  
Host Compound ◽  
Novel Method ◽  
Trefoil Knots

The thread–link–cut (TLC) approach has previously shown promise as a novel method to synthesize molecular knots. The modular second-generation approach to small trefoil knots described herein involves electrostatic interactions between an electron-rich bis-macrocyclic host compound and electron-deficient guests in the threading step. The bis-macrocyclic host was synthesized in eight steps and 6.6% overall yield. Ammonium and pyridinium guests were synthesized in 4–5 steps. The TLC knot-forming sequence was carried out and produced a product with the expected molecular weight, but, unfortunately, further characterization did not produce conclusive results regarding the topology of the product.

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