Efficient Algorithms for Self Assembling Triangular and Other Nano Structures

2009 ◽  
pp. 148-158
Author(s):  
Vamsi Kundeti ◽  
Sanguthevar Rajasekaran
Keyword(s):  
Efficient Algorithms ◽  
Self Assembling ◽  
Nano Structures

Efficient algorithms for self assembling non-rectangular nano structures

2010 ◽  
Vol 10 (1) ◽  
pp. 583-594
Author(s):  
Vamsi Kundeti ◽  
Sanguthevar Rajasekaran
Keyword(s):  
Efficient Algorithms ◽  
Self Assembling ◽  
Nano Structures

Self-Formation of Au Microwires on Au-Covered Si Electrode Surface by Electrochemical Etching in Dilute Hydrofluoric Acid Solution

2000 ◽  
Vol 638 ◽  
Author(s):  
Yasuo Kimura ◽  
Jun Nemoto ◽  
Atsushi Kusakabe ◽  
Yusuke Kondo ◽  
Michio Niwano
Keyword(s):  
Acid Solution ◽  
Electrode Surface ◽  
Hydrofluoric Acid ◽  
Electrochemical Etching ◽  
Hydrofluoric Acid Solution ◽  
Self Assembling ◽  
Electrode Potentials ◽  
Nano Structures ◽  
Self Formation

AbstractWe have investigated the method of fabricating microstructures on a Si surface that is covered with a patterned gold (Au) mask, by electrochemical etching (anodization) in dilute hydrofluoric acid (HF) solution. We found that at electrode potentials below approximately 0.5 V, the Si surface is preferentially etched on the fringe of the Au mask, where a number of pores are formed. At higher electrode potentials, Au microwires with about 1 µm in width form along the fringe of the Au mask overlayer. We suggest that electromigration of Au towards the fringe of the Au mask induces self-assembling of Au atoms to form microwires. The observed self-formation of metal microwires would be beneficial to the fabrication of metal micro- or nano-structures on Si.

scholarly journals Surface Modification by Nano-Structures Reduces Viable Bacterial Biofilm in Aerobic and Anaerobic Environments

2020 ◽  
Vol 21 (19) ◽  
pp. 7370
Author(s):  
Sarah Ya’ari ◽  
Michal Halperin-Sternfeld ◽  
Boris Rosin ◽  
Lihi Adler-Abramovich
Keyword(s):  
Surface Modification ◽  
Self Assembly ◽  
Antimicrobial Property ◽  
Bacterial Biofilm ◽  
Nano Structure ◽  
Self Assembling ◽  
Nano Structures ◽  
Coated Surfaces ◽  
Glass Surfaces ◽  
Aerobic And Anaerobic

Bacterial biofilm formation on wet surfaces represents a significant problem in medicine and environmental sciences. One of the strategies to prevent or eliminate surface adhesion of organisms is surface modification and coating. However, the current coating technologies possess several drawbacks, including limited durability, low biocompatibility and high cost. Here, we present a simple antibacterial modification of titanium, mica and glass surfaces using self-assembling nano-structures. We have designed two different nano-structure coatings composed of fluorinated phenylalanine via the drop-cast coating technique. We investigated and characterized the modified surfaces by scanning electron microscopy, X-ray diffraction and wettability analyses. Exploiting the antimicrobial property of the nano-structures, we successfully hindered the viability of Streptococcus mutans and Enterococcus faecalis on the coated surfaces in both aerobic and anaerobic conditions. Notably, we found lower bacteria adherence to the coated surfaces and a reduction of 86–99% in the total metabolic activity of the bacteria. Our results emphasize the interplay between self-assembly and antimicrobial activity of small self-assembling molecules, thus highlighting a new approach of biofilm control for implementation in biomedicine and other fields.

Torus Circumference and Thickness Parameters From a Linear DNA Size Series Suggest How Toruses Self-Assemble

1985 ◽  
Vol 43 ◽  
pp. 522-523
Author(s):  
George C. Ruben ◽  
Kenneth A. Marx
Keyword(s):  
Tertiary Structure ◽  
Dna Complexes ◽  
Tertiary Structures ◽  
Self Assembling ◽  
Double Stranded Dna ◽  
Calf Thymus ◽  
Dna Organization ◽  
Condensed Dna ◽  
Dna Size

Certain double stranded DNA bacteriophage and viruses are thought to have their DNA organized into large torus shaped structures. Morphologically, these poorly understood biological DNA tertiary structures resemble spermidine-condensed DNA complexes formed in vitro in the total absence of other macromolecules normally synthesized by the pathogens for the purpose of their own DNA packaging. Therefore, we have studied the tertiary structure of these self-assembling torus shaped spermidine- DNA complexes in a series of reports. Using freeze-etch, low Pt-C metal (10-15Å) replicas, we have visualized the microscopic DNA organization of both calf Thymus( CT) and linear 0X-174 RFII DNA toruses. In these structures DNA is circumferentially wound, continuously, around the torus into a semi-crystalline, hexagonal packed array of parallel DNA helix sections.

Structure–property studies of self-assembling [n.n]paracyclophanes

2020 ◽  
Author(s):  
Will R Henderson ◽  
Danielle E. Fagnani ◽  
Yu Zhu ◽  
Guancen Liu ◽  
Ronald K. Castellano
Keyword(s):  
Structure Property ◽  
Self Assembling

Self assembling mirrors

Nature ◽  
1999 ◽  
Author(s):  
Philip Ball
Keyword(s):  
Self Assembling

Tidal Flow: A Fast and Teachable Maximum Flow Algorithm

2018 ◽  
Vol 12 ◽  
pp. 25-41
Author(s):  
Matthew C. FONTAINE
Keyword(s):  
Computer Science ◽  
Tidal Flow ◽  
Maximum Flow ◽  
Efficient Algorithms ◽  
Science Students ◽  
Flow Algorithm ◽  
Maximum Flows

Among the most interesting problems in competitive programming involve maximum flows. However, efficient algorithms for solving these problems are often difficult for students to understand at an intuitive level. One reason for this difficulty may be a lack of suitable metaphors relating these algorithms to concepts that the students already understand. This paper introduces a novel maximum flow algorithm, Tidal Flow, that is designed to be intuitive to undergraduate andpre-university computer science students.

Designing Enzyme-Triggered Hydrogels for Biomedical Applications Using Self-Assembling Octapeptides

2008 ◽  
Author(s):  
Aline Fiona. Miller ◽  
Elisabeth Vey ◽  
Alberto Saiani
Keyword(s):  
Biomedical Applications ◽  
Self Assembling

Combinatorial Peptide Libraries for Selecting Inorganic-Binding Proteins: A Step in Molecular Biomimetics

2003 ◽  
Vol 773 ◽  
Author(s):  
C. Tamerler ◽  
S. Dinçer ◽  
D. Heidel ◽  
N. Karagûler ◽  
M. Sarikaya
Keyword(s):  
Binding Proteins ◽  
Building Blocks ◽  
Molecular Engineering ◽  
Inorganic Materials ◽  
Combinatorial Peptide Libraries ◽  
Self Assembling ◽  
Complex Functions ◽  
Recent Developments ◽  
Specific Proteins ◽  
Molecular Biomimetics

AbstractProteins, one of the building blocks in organisms, not only control the assembly in biological systems but also provide most of their complex functions. It may be possible to assemble materials for practical technological applications utilizing the unique advantages provided by proteins. Here we discuss molecular biomimetic pathways in the quest for imitating biology at the molecular scale via protein engineering. We use combinatorial biology protocols to select short polypeptides that have affinity to inorganic materials and use them in assembling novel hybrid materials. We give an overview of some of the recent developments of molecular engineering towards this goal. Inorganic surface specific proteins were identified by using cell surface and phage display technologies. Examples of metal and metal oxide specific polypeptides were represented with an emphasis on certain level of specificities. The recognition and self assembling characteristics of these inorganic-binding proteins would be employed in develeopment of hybrid multifunctional materials for novel bio- and nano-technological applications.

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