Resin Self-Alignment Processes for Self-Assembly Systems

2005 ◽  
Vol 127 (1) ◽  
pp. 18-24 ◽  
Author(s):  
Jong-Min Kim ◽  
Kiyokazu Yasuda ◽  
Kozo Fujimoto
Keyword(s):  
Surface Tension ◽  
Numerical Analysis ◽  
Self Assembly ◽  
Fundamental Concept ◽  
The Self ◽  
Oscillatory Motion ◽  
Assembly Systems ◽  
The Relationship

We have demonstrated the self-alignment processes using surface tension of the resin material for the self-assembly systems. It has been known that the surface tension of the resin material is too low to achieve the self-alignment capability. This paper presents a fundamental concept and principles of resin self-alignment processes. The numerical analysis is conducted to enhance understandings of resin self-alignment behavior and the relationship between process-related parameters. It was proved that resin self-alignment is different from the oscillatory motion of solder self-alignment and shows overdamped motion by the experiment. We could achieve the precise alignment of less than 0.4 μm.

scholarly journals Understanding the role of conjugation length on the self-assembly behaviour of oligophenyleneethynylenes

2021 ◽  
Author(s):  
Beatriz Matarranz ◽  
Goutam Ghosh ◽  
Ramesh Kandanelli ◽  
Angel Sampedro ◽  
Kalathil K. Kartha ◽  
...  
Keyword(s):  
Self Assembly ◽  
The Self ◽  
Conjugation Length ◽  
The Relationship

We unravel the relationship between conjugation length and self-assembly behaviour of oligophenyleneethynylenes (OPEs).

scholarly journals Self-Assembly of Shape-Tunable Oblate Colloidal Particles into Orientationally Ordered Crystals, Glassy Crystals and Plastic Crystals

Soft Matter ◽  
2021 ◽  
Author(s):  
Jiawei Lu ◽  
Xiangyu Bu ◽  
Xinghua Zhang ◽  
Bing Liu
Keyword(s):  
Crystal Structures ◽  
Self Assembly ◽  
Colloidal Particles ◽  
Building Blocks ◽  
Fundamental Question ◽  
The Self ◽  
Plastic Crystals ◽  
Self Assembled ◽  
Glassy Crystals ◽  
The Relationship

The shapes of colloidal particles are crucial to the self-assembled superstructures. Understanding the relationship between the shapes of building blocks and the resulting crystal structures is an important fundamental question....

Precisely Controlling Assembly Angle of Surface Tension Powered Self-Assembly for MEMS Microstructures

2007 ◽  
Author(s):  
Kai-Lin Pan ◽  
Yi-Lin Yan ◽  
Bin Zhou
Keyword(s):  
Surface Tension ◽  
Surface Energy ◽  
Self Assembly ◽  
Current Model ◽  
Three Dimensional ◽  
Design Parameters ◽  
Solder Paste ◽  
Surface Evolver ◽  
Final Assembly ◽  
The Relationship

How to integrate the microstructures which are made by various micro manufacturing methods into a functional system or device is the key to the application of MEMS technology. Solder self-assembly is based on surface tension with the properties of “self-organization”, low cost, batch processes and the compatibility with surface mount technology, which makes it be a challenging alternate technique. Solder self-assembly is based on the principle of surface energy minimization of molten solder material. During the process of minimizing the surface energy, surface tension can pull the horizontal hinged or hingeless plate up to a particular angle to achieve the minimal system energy. Finite element method is applied in this paper. MEMS self-assembly three-dimensional dynamic simulation model is developed by SURFACE EVOLVER. First, the model in this paper dynamically simulate the angle change of hinged plate during the process of evolvement of solder; second, the comparisons among the results from the current model and those from analytical two-dimensional model and three-dimensional static model are carried out; third, through Design of Experiments (DoE) with the application of the current model, the influences of design parameters such as pad size, pad geometry, and solder paste volume to the assembly angle are compared and discussed. Through changing the pad size, pad geometry and solder paste volume in SURFACE EVOLVER model, the corresponding final assembly angel from dynamic three-dimensional models are obtained. The relationship between design parameters to the assembly angle is concluded by the application of statistical analyses. The final angle can be controlled more effectively through synthetically optimize these parameters. It can provide effective guidance to the practical manufacturing of MEMS. Further research should focuses on the MEMS self-assembly experiment to intensively understand the relationship between the pad sizes, pad position, solder paste volume, hinge position, lock position and intermetallic compounds and the final assembly angle.

New Method and Experimental Study for Fast Evaluating Filling Mould Ability of Al-Si Alloy by Surface Tension

2007 ◽  
Vol 546-549 ◽  
pp. 697-702 ◽  
Author(s):  
De Quan Shi ◽  
Da Yong Li ◽  
Qian Sun ◽  
Gui Li Gao
Keyword(s):  
Experimental Study ◽  
Surface Tension ◽  
Acute Angle ◽  
The Self ◽  
New Method ◽  
Test Surface ◽  
New Apparatus ◽  
The Relationship

On the basis of analyzing the relationship between filling mould ability and surface tension of Al-Si alloy, a new method was put forward that filling mould ability can be fast evaluated by surface tension. To fast test surface tension of Al-Si alloy in front of furnace, a new apparatus had been developed and a new mould had been designed to appraise the ability of filling acute angle of Al-Si alloy by authors. By means of the self-developed new apparatus and new mould, the relationship between surface tension and filling mould ability had also been proved and gotten by many experiments on Al-Si alloys. Depending on the relationship the filling mould ability of Al-Si alloy can be evaluated by surface tension in few seconds before cast.

Template-Free Synthesis of Ellipsoidal Silica Nanoparticles

2012 ◽  
Vol 1386 ◽  
Author(s):  
Henan Zhang ◽  
Daniel L. Akins
Keyword(s):  
Surface Tension ◽  
Self Assembly ◽  
Sol Gel ◽  
The Self ◽  
Micellar System ◽  
Synthesis Conditions ◽  
Spherical Silica ◽  
Sol Gel Process ◽  
Spherical Silica Particles ◽  
Template Free

ABSTRACTFor a sol-gel process occurring in a water/oil (w/o) system, the self-assembly of silica nuclei can be controlled by close control of synthesis conditions. We have synthesized ellipsoidal or spherical silica particles by a template-free scheme that involves controlling surface tension on silica nuclei through via use of different volume ratios of a w/o micellar system.

Towards kinetic control of coordination self-assembly: a case study of a Pd3L6 double-walled triangle to predict the outcomes by a reaction network model

2020 ◽  
Vol 22 (45) ◽  
pp. 26614-26626
Author(s):  
Satoshi Takahashi ◽  
Tomoki Tateishi ◽  
Yuya Sasaki ◽  
Hirofumi Sato ◽  
Shuichi Hiraoka
Keyword(s):  
Numerical Analysis ◽  
Network Model ◽  
Self Assembly ◽  
Reaction Network ◽  
The Self ◽  
Reaction Pathways ◽  
Kinetic Control ◽  
Assembly Process

Numerical analysis of self-assembly process (NASAP) was performed for a Pd3L6 double-walled triangle and revealed the reaction pathways in detail. The prediction of the outcome of the self-assembly under kinetic control was also succeeded.

scholarly journals Regimes of motion of magnetocapillary swimmers

2021 ◽  
Vol 44 (4) ◽  
Author(s):  
Alexander Sukhov ◽  
Maxime Hubert ◽  
Galien Grosjean ◽  
Oleg Trosman ◽  
Sebastian Ziegler ◽  
...  
Keyword(s):  
Surface Tension ◽  
Lattice Boltzmann Method ◽  
Magnetic Moment ◽  
Lattice Boltzmann ◽  
Self Assembly ◽  
Maximum Velocity ◽  
The Self ◽  
Magnetic Contribution ◽  
Magnetic Forces ◽  
Boltzmann Method

Abstract The dynamics of a triangular magnetocapillary swimmer is studied using the lattice Boltzmann method. We extend on our previous work, which deals with the self-assembly and a specific type of the swimmer motion characterized by the swimmer’s maximum velocity centred around the particle’s inverse viscous time. Here, we identify additional regimes of motion. First, modifying the ratio of surface tension and magnetic forces allows to study the swimmer propagation in the regime of significantly lower frequencies mainly defined by the strength of the magnetocapillary potential. Second, introducing a constant magnetic contribution in each of the particles in addition to their magnetic moment induced by external fields leads to another regime characterized by strong in-plane swimmer reorientations that resemble experimental observations. Graphic Abstract

Study on Structure of the New Polymer-Poly (Propylene-Co-γ-Butyrolactone Carbonate) with Molecular Model

2007 ◽  
Vol 353-358 ◽  
pp. 3076-3079
Author(s):  
Ling Bin Lu ◽  
Ke Long Huang ◽  
Feng Wen
Keyword(s):  
Phase Separation ◽  
Self Assembly ◽  
Molecular Model ◽  
The Self ◽  
Molecular Chain ◽  
Drug Molecule ◽  
Carboxylic Ester ◽  
Poly Propylene ◽  
The Relationship ◽  
Materials Studio

Based on COMPASS forcefield, the relationship between microstructure and macroscopic properties of poly (propylene-co-γ-butyrolactone carbonate) (PPCG) was firstly investigated with ‘Materials Studio’ simulation soft successfully. The results of simulation showed that the molecular chain of PPCG was flexible. Degradable carbonic and carboxylic ester groups were distributed outside the PPCG cell. Furthermore the structure of micro-phase separation was observed in PPCG cell. The structure of micro-phase separation of PPCG can be applied to the self-assembly of drug molecule.

The relationship between molecular structure and supramolecular morphology in the self-assembly of rod–coil molecules with oligoether chains

Soft Matter ◽  
2020 ◽  
Vol 16 (9) ◽  
pp. 2224-2229
Author(s):  
Jie Lu ◽  
Shengsheng Yu ◽  
Zhaohua Li ◽  
Myongsoo Lee ◽  
Yuntian Yang ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Aqueous Solutions ◽  
Self Assembly ◽  
The Self ◽  
Methyl Groups ◽  
The Relationship

Supramolecular nanoassemblies such as scrolled/helical nanofibers and nanorings were constructed by controlling the length of the oligoether chains and inserting lateral methyl groups at the surface of the rod and coil domains in aqueous solutions.

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