Self-Assembly of Gears at a Fluid/Air Interface

2003 ◽  
Vol 125 (26) ◽  
pp. 7948-7958 ◽  
Author(s):  
Jessamine M. K. Ng ◽  
Michael J. Fuerstman ◽  
Bartosz A. Grzybowski ◽  
Howard A. Stone ◽  
George M. Whitesides
Keyword(s):  
Self Assembly ◽  
Air Interface

scholarly journals Interfacial Crystallization and Supramolecular Self-Assembly of Spider Silk Inspired Protein at the Water-Air Interface

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4239
Author(s):  
Pezhman Mohammadi ◽  
Fabian Zemke ◽  
Wolfgang Wagermaier ◽  
Markus B. Linder
Keyword(s):  
Self Assembly ◽  
Spider Silk ◽  
Assembly Process ◽  
Protein Solution ◽  
Time Resolved ◽  
Macromolecular Assembly ◽  
X Ray Scattering ◽  
Air Interface ◽  
Fundamental Research ◽  
Β Sheet

Macromolecular assembly into complex morphologies and architectural shapes is an area of fundamental research and technological innovation. In this work, we investigate the self-assembly process of recombinantly produced protein inspired by spider silk (spidroin). To elucidate the first steps of the assembly process, we examined highly concentrated and viscous pendant droplets of this protein in air. We show how the protein self-assembles and crystallizes at the water–air interface into a relatively thick and highly elastic skin. Using time-resolved in situ synchrotron X-ray scattering measurements during the drying process, we showed that the skin evolved to contain a high β-sheet amount over time. We also found that β-sheet formation strongly depended on protein concentration and relative humidity. These had a strong influence not only on the amount, but also on the ordering of these structures during the β-sheet formation process. We also showed how the skin around pendant droplets can serve as a reservoir for attaining liquid–liquid phase separation and coacervation from the dilute protein solution. Essentially, this study shows a new assembly route which could be optimized for the synthesis of new materials from a dilute protein solution and determine the properties of the final products.

scholarly journals Manuscript-C-dots assembly at interface-041020.pdf

2020 ◽  
Author(s):  
Amin Reza Zolghadr ◽  
Behnam Rostami
Keyword(s):  
Self Assembly ◽  
Carbon Dots ◽  
Sodium Dodecyl ◽  
Surface Region ◽  
Systematic Investigation ◽  
Dynamics Simulation ◽  
Surface Tension Gradient ◽  
Bivariate Analysis ◽  
Air Interface ◽  
Sds Surfactant

We describe a systematic investigation of carbon dots (C-dots) assemblies fabricated at the liquid/air interface because of the surface tension gradient. This gradient is originally created by capillary action and increased by addition of sodium dodecyl sulfate (SDS) surfactant or 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC) phospholipid to the surface of C-dots aqueous mixture. The arrangement of carbon dots in liquid bulk phase (before self-assembly) and at the surface region (after self-assembly) was examined by TEM microscopy. The presence of SDS surfactant and POPC phospholipid at the air/water interface induced the C-dots compression. In addition, molecular dynamics simulation was conducted to obtain the structure of C-dots at liquid/vapor interface. The orientation of C-dots is evaluated quantitatively at water/vapor surface by using bivariate analysis.

Laser-accelerated self-assembly of colloidal particles at the water–air interface

2017 ◽  
Vol 15 (5) ◽  
pp. 051401-51405 ◽  
Author(s):  
Mincheng Zhong Mincheng Zhong ◽  
Ziqiang Wang Ziqiang Wang ◽  
and Yinmei Li and Yinmei Li
Keyword(s):  
Self Assembly ◽  
Colloidal Particles ◽  
Air Interface

scholarly journals Bio-Inspired Fluorine-Free Self-Cleaning Polymer Coatings

Coatings ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 436 ◽  
Author(s):  
Lionel Wasser ◽  
Sara Dalle Vacche ◽  
Feyza Karasu ◽  
Luca Müller ◽  
Micaela Castellino ◽  
...  
Keyword(s):  
Self Assembly ◽  
Polymer Coatings ◽  
Sliding Angle ◽  
Water Contact ◽  
Uv Curable ◽  
Molecular Weights ◽  
Air Interface ◽  
Creep Time ◽  
Self Cleaning ◽  
Printing Processes

Bio-inspired fluorine-free and self-cleaning polymer coatings were developed using a combination of self-assembly and UV-printing processes. Nasturtium and lotus leaves were selected as natural template surfaces. A UV-curable acrylate oligomer and three acrylated siloxane comonomers with different molecular weights were used. The spontaneous migration of the comonomers towards the polymer–air interface was found to be faster for comonomers with higher molecular weight, and enabled to create hydrophobic surfaces with a water contact angle (WCA) of 105°. The replication fidelity was limited for the nasturtium surface, due to a lack of replication of the sub-micron features. It was accurate for the lotus leaf surface whose hierarchical texture, comprising micropapillae and sub-micron crystalloids, was well reproduced in the acrylate/comonomer material. The WCA of synthetic replica of lotus increased from 144° to 152° with increasing creep time under pressure to 5 min prior to polymerization. In spite of a water sliding angle above 10°, the synthetic lotus surface was self-cleaning with water droplets when contaminated with hydrophobic pepper particles, provided that the droplets had some kinetic energy.

A lotus-inspired janus hybrid film enabled by interfacial self-assembly and in situ asymmetric modification

2018 ◽  
Vol 54 (91) ◽  
pp. 12804-12807 ◽  
Author(s):  
Yun Liang ◽  
Jiangwei Shi ◽  
Peng Xiao ◽  
Jiang He ◽  
Feng Ni ◽  
...  
Keyword(s):  
Self Assembly ◽  
Hybrid Film ◽  
Water Interface ◽  
Assembly Process ◽  
Lotus Leaf ◽  
Air Interface ◽  
Oil Water

A lotus leaf inspired Janus hybrid film was exquisitely fabricated through a self-assembly process on the water/air interface with subsequent in situ asymmetric modification at the oil/water interface. The interfacial asymmetric decoration strategy thus provides a novel pathway for achieving a 2D Janus hybrid film with asymmetric wettability and functionality.

scholarly journals Dynamics of self assembly of magnetized disks rotating at the liquid-air interface

2002 ◽  
Vol 99 (7) ◽  
pp. 4147-4151 ◽  
Author(s):  
B. A. Grzybowski ◽  
H. A. Stone ◽  
G. M. Whitesides
Keyword(s):  
Self Assembly ◽  
Air Interface

Large area mosaic films of graphene–titania: self-assembly at the liquid–air interface and photo-responsive behavior

Nanoscale ◽  
2011 ◽  
Vol 3 (1) ◽  
pp. 188-191 ◽  
Author(s):  
Timothy N. Lambert ◽  
Carlos A. Chavez ◽  
Nelson S. Bell ◽  
Cody M. Washburn ◽  
David R. Wheeler ◽  
...  
Keyword(s):  
Self Assembly ◽  
Large Area ◽  
Air Interface ◽  
Responsive Behavior

Monitoring Self-Assembly and Ligand Exchange of PbS Nanocrystal Superlattices at the Liquid/Air Interface in Real Time

2018 ◽  
Vol 9 (4) ◽  
pp. 739-744 ◽  
Author(s):  
Santanu Maiti ◽  
Alexander André ◽  
Rupak Banerjee ◽  
Jan Hagenlocher ◽  
Oleg Konovalov ◽  
...  
Keyword(s):  
Real Time ◽  
Self Assembly ◽  
Ligand Exchange ◽  
Air Interface ◽  
Nanocrystal Superlattices

scholarly journals Semiconductor Nanorod Self-Assembly at the Liquid/Air Interface Studied by in Situ GISAXS and ex Situ TEM

Nano Letters ◽  
2012 ◽  
Vol 12 (11) ◽  
pp. 5515-5523 ◽  
Author(s):  
Francesca Pietra ◽  
Freddy T. Rabouw ◽  
Wiel H. Evers ◽  
Dima V. Byelov ◽  
Andrei V. Petukhov ◽  
...  
Keyword(s):  
Self Assembly ◽  
Ex Situ ◽  
Air Interface
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