scholarly journals Fronts and patterns in a spatially forced CDIMA reaction

2014 ◽  
Vol 16 (47) ◽  
pp. 26137-26143 ◽  
Author(s):  
Lev Haim ◽  
Aric Hagberg ◽  
Raphael Nagao ◽  
Asher Preska Steinberg ◽  
Milos Dolnik ◽  
...  
Keyword(s):  
Chemical Reaction ◽  
Building Blocks ◽  
Model Analysis

We use experiments on a chemical reaction and model analysis to study localized phase fronts in stripe patterns and their roles as building blocks of extended rectangular and oblique patterns.

Chemical reaction bonding of building blocks using red mud and orthophosphoric acid binder

1996 ◽  
Vol 15 (19) ◽  
pp. 1667-1668 ◽  
Author(s):  
J. L. Gumaste ◽  
B. C. Swain ◽  
B. C. Mohanty ◽  
J. S. Murty
Keyword(s):  
Chemical Reaction ◽  
Red Mud ◽  
Orthophosphoric Acid ◽  
Building Blocks ◽  
Reaction Bonding

Bubble Based Micro/Nano Fabrication Method

2007 ◽  
Author(s):  
Xiao-Dan Bai ◽  
Jing Liu
Keyword(s):  
Chemical Reaction ◽  
Large Scale ◽  
Large Diameter ◽  
Building Blocks ◽  
Membrane Thickness ◽  
Fabrication Method ◽  
Specific Chemical ◽  
Soap Bubbles ◽  
Nano Fabrication ◽  
Nano Structures

Micro/nano structures, especially those in one dimensional, such as nano wires, are commonly used building blocks for the bottom-up assembly of electronic, photonic or mechanical devices. However, their fabrications are generally limited to the expensive equipments and methods capable of only working in an extremely small space. A big challenge facing the current scientific society is to overcome this barrier and build up a bridge between the macroscopic manipulation/observation and the fabrication in small world. Here, we proposed a new conceptual fabrication method, which can easily be implemented to synthesize, etch and construct micro or nano structures through manipulating the large scale bubbles composed of specific chemical compounds. The core of the method lies in the chemical reaction occurring at the interfaces between two or more soap bubbles. A surprisingly unique virtue of the bubble is that it can have a rather large diameter however an extremely small membrane thickness, whose smallest size even reaches nano scale. Therefore, the chemical reaction and synthesis occurred in the common boundary of such contacting bubbles would lead to products with very small size. Most important of all, all these were achieved via a much easy and straightforward way. To better understand the physical picture of the new method, the principle and mechanism for the bubble based fabrication process were interpreted. Several fundamental equations for characterizing the bubbles were proposed and preliminarily discussed. As the first trial to demonstrate the new concept, several typical micro structures were successfully fabricated in our lab. Particularly, a micro wire which can be used as tiny temperature sensor was made and tested. Being flexible, easily controllable and observable, environmentally friend and extremely low in cost, the present method is expected to be a significant technical route for making micro/nano structures in the near future. It also indicated for the first time that blowing soap bubbles means not just funny but also opens a new world for micro/nano fabrication.

Processing Complex and Uniform Nanoparticles for Microelectronic and Photonic Applications

2001 ◽  
Vol 704 ◽  
Author(s):  
Nobuyuki Kambe
Keyword(s):  
Refractive Index ◽  
Chemical Reaction ◽  
Surface Engineering ◽  
Building Blocks ◽  
Size Distributions ◽  
Direct Deposition ◽  
Device Structures ◽  
Inorganic Nanocomposites ◽  
Planar Lightwave ◽  
Reaction Processes

AbstractTwo major challenges that exist in order to utilize nanoparticles as building blocks for microelectronic and photonic applications are presented. The first challenge is how to make uniform nanoparticles in industrial-scale. The second challenge is how to convert these nano-building blocks to application forms such as device structures or coatings. In this paper, materials and processing guidelines to provide the solutions for these challenges are described on the basis of (a) laser-driven chemical reaction processes to generate a versatile range of nanoparticles having extremely narrow size distributions, and (b) unique organic-inorganic nanocomposites using surface engineering over nanoparticles. As promising applications, direct deposition of nanoparticles and nanocomposites are discussed in conjunction with planar lightwave devices, photonic nanocomposites for the refractive index engineering, and planarization processes for electronic chips.

Understanding Chemical Reaction Kinetics and Equilibrium with Interlocking Building Blocks

2011 ◽  
Vol 88 (10) ◽  
pp. 1400-1403 ◽  
Author(s):  
Carrie A. Cloonan ◽  
Carolyn A. Nichol ◽  
John S. Hutchinson
Keyword(s):  
Reaction Kinetics ◽  
Chemical Reaction ◽  
Building Blocks ◽  
Chemical Reaction Kinetics

Ion Translocation in Artificial Molecule-based Systems Induced by Light, Electrons, or Chemicals

2011 ◽  
Vol 64 (10) ◽  
pp. 1301 ◽  
Author(s):  
Robin Bofinger ◽  
Aurélien Ducrot ◽  
Laura Jonusauskaite ◽  
Nathan D. McClenaghan ◽  
Jean-Luc Pozzo ◽  
...  
Keyword(s):  
Chemical Reaction ◽  
Building Blocks ◽  
Redox Process ◽  
Biological Processes ◽  
Natural Systems ◽  
Short Overview ◽  
Ion Translocation ◽  
Synthetic Molecules ◽  
Artificial Molecule ◽  
Chemical Messengers

Synthetic molecules and nanodevices, like their more elaborate biological counterparts, have been shown to perform several sophisticated functions, using even fairly simple molecular architectures. One limitation to developing artificial molecular arrays and networks from these miniscule building blocks is the lack of a unifying strategy whereby they can communicate or interact together, which has been successfully developed in natural systems. Understanding and harnessing these efficient biological processes could prove key in the development of future integrated molecule-based nanodevices and networks. Herein, we give a short overview of some manifestations of intra- and intermolecular communication based on chemical messengers in artificial systems, in some ways analogous to natural systems, which are in turn controlled by light, a redox process or a chemical reaction or interaction. Some advantages, limitations, and challenges are highlighted.

Active Coacervate Droplets as a Model for Membraneless Organelles and a Platform Towards Synthetic Life

2020 ◽  
Author(s):  
Carsten Donau ◽  
Fabian Späth ◽  
Marilyne Sosson ◽  
Brigitte Kriebisch ◽  
Fabian Schnitter ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Dynamic Behavior ◽  
Chemical Reaction ◽  
Stress Granules ◽  
Building Blocks ◽  
Reaction Cycle ◽  
Dynamic Composition ◽  
Rapid Exchange ◽  
Active Liquid ◽  
Synthetic Life

Membraneless organelles like stress granules are active liquid-liquid phase-separated droplets that are involved in many intracellular processes. Their active and dynamic behavior is often regulated by ATP-dependent reactions. However, how exactly membraneless organelles control their dynamic composition remains poorly understood. Herein, we present a model for membraneless organelles based on RNA-containing active coacervate droplets regulated by a fuel-driven reaction cycle. These droplets emerge when fuel is present, but decay without. Moreover, we find these droplets can transiently up-concentrate functional RNA, and that this up-take is accelerated by the chemical reaction cycle. Finally, we show that in their pathway towards decay, these droplets self-divide asymmetrically. Self-division combined with emergence, decay, rapid exchange of building blocks, and functionality are all hallmarks of life, and we believe that our work could be a stepping stone towards its synthesis.

Active Coacervate Droplets as a Model for Membraneless Organelles and a Platform Towards Synthetic Life

2020 ◽  
Author(s):  
Carsten Donau ◽  
Fabian Späth ◽  
Marilyne Sosson ◽  
Brigitte Kriebisch ◽  
Fabian Schnitter ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Dynamic Behavior ◽  
Chemical Reaction ◽  
Stress Granules ◽  
Building Blocks ◽  
Reaction Cycle ◽  
Dynamic Composition ◽  
Rapid Exchange ◽  
Active Liquid ◽  
Synthetic Life

Membraneless organelles like stress granules are active liquid-liquid phase-separated droplets that are involved in many intracellular processes. Their active and dynamic behavior is often regulated by ATP-dependent reactions. However, how exactly membraneless organelles control their dynamic composition remains poorly understood. Herein, we present a model for membraneless organelles based on RNA-containing active coacervate droplets regulated by a fuel-driven reaction cycle. These droplets emerge when fuel is present, but decay without. Moreover, we find these droplets can transiently up-concentrate functional RNA, and that this up-take is accelerated by the chemical reaction cycle. Finally, we show that in their pathway towards decay, these droplets self-divide asymmetrically. Self-division combined with emergence, decay, rapid exchange of building blocks, and functionality are all hallmarks of life, and we believe that our work could be a stepping stone towards its synthesis.

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