scholarly journals Butterfly Wings Are Three-Dimensional: Pupal Cuticle Focal Spots and Their Associated Structures in Junonia Butterflies

PLoS ONE ◽  
2016 ◽  
Vol 11 (1) ◽  
pp. e0146348 ◽  
Author(s):  
Wataru Taira ◽  
Joji M. Otaki
Keyword(s):  
Three Dimensional ◽  
Butterfly Wings ◽  
Pupal Cuticle

Study on the Bionic Preparation and Properties of TiO2 as Three-Dimensional Anode Materials for Lithium-Ion Batteries

2014 ◽  
Vol 875-877 ◽  
pp. 1507-1510
Author(s):  
Yi Ping Tang ◽  
Liang Hong ◽  
Yuan Chao Jin ◽  
Huan Le Zhang ◽  
Guo Qu Zheng
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Anode Materials ◽  
3D Structure ◽  
Three Dimensional ◽  
Lithium Ion ◽  
The Novel ◽  
X Ray Diffraction ◽  
X Ray ◽  
Butterfly Wings

In this paper, a novel bionic preparation of anode materials for lithium-ion batteries was reported. Butterfly wings were used as a template to prepare three-dimensional (3D) TiO2 anode materials. The final product of TiO2 anode materials maintained the 3D structure of butterfly wings perfectly. The morphology and crystal structure were studied by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM). The electrochemical performance was evaluated by galvanostatic chargedischarge tests. The results showed that the novel 3D porous structure is benefit to the high electrochemical performance

Stereometric Parameters of Butterfly Wings

2017 ◽  
Vol 31 ◽  
pp. 1-10 ◽  
Author(s):  
Żaneta Garczyk ◽  
Sebastian Stach ◽  
Ştefan Ţălu ◽  
Dinara Sobola ◽  
Zygmunt Wróbel
Keyword(s):  
Strong Correlation ◽  
Three Dimensional ◽  
Butterfly Species ◽  
Angle Of Incidence ◽  
Statistical Parameters ◽  
Structural Coloration ◽  
Irregular Shapes ◽  
Atomic Force ◽  
Three Samples ◽  
Butterfly Wings

This paper analyses the data stereometric of three samples obtained using the atomic force microscope. The data concern the two butterfly species: Euploea mulciber (known as “Striped Blue Crow”) and Morpho didius (also named as “Giant Blue Morpho”). These species have a strong correlation color wings of the angle of incidence of light. This is structural coloration and it depends on the surface topography. Here we present a method for the topography evaluation. A script created in Matlab software version R2012 by MathWorks® was used for segmentation data stereometric and analysis of localized motifs occurring on the surface of the samples. An analysis of the data using stereometric software MountainsMap® Premium version 7.3.7746 by Digital Surf was made to compare the results obtained using the script developed in Matlab, for identification of all sorts of motifs, such as peaks, pits, or irregular shapes in correlation with the surface statistical parameters. The analysis of motifs is essential when choosing the appropriate technique for imaging the 3-D (three-dimensional) microtextured features of butterfly wings surfaces. This stereometric analysis proves to be an effective method that can be successfully used for estimation of micro- and nano- topography by processing of AFM data

scholarly journals Numerical study on butterfly wings around inclusion based on damage evolution and semi-analytical method

Friction ◽  
2021 ◽  
Author(s):  
Ye Zhou ◽  
Caichao Zhu ◽  
Xiaojin Chen ◽  
Wei Ye
Keyword(s):  
Damage Mechanics ◽  
Numerical Study ◽  
Fatigue Behavior ◽  
Three Dimensional ◽  
Elastic Field ◽  
Potential Method ◽  
Premature Failure ◽  
Equivalent Inclusion Method ◽  
Damaged Zone ◽  
Butterfly Wings

AbstractButterfly wings are closely related to the premature failure of rolling element bearings. In this study, butterfly formation is investigated using the developed semi-analytical three-dimensional (3D) contact model incorporating inclusion and material property degradation. The 3D elastic field introduced by inhomogeneous inclusion is solved by using numerical approaches, which include the equivalent inclusion method (EIM) and the conjugate gradient method (CGM). The accumulation of fatigue damage surrounding inclusions is described using continuum damage mechanics. The coupling between the development of the damaged zone and the stress field is considered. The effects of the inclusion properties on the contact status and butterfly formation are discussed in detail. The model provides a potential method for quantifying material defects and fatigue behavior in terms of the deterioration of material properties.

scholarly journals Biomimetic gyroid nanostructures exceeding their natural origins

2016 ◽  
Vol 2 (5) ◽  
pp. e1600084 ◽  
Author(s):  
Zongsong Gan ◽  
Mark D. Turner ◽  
Min Gu
Keyword(s):  
Circular Dichroism ◽  
Mechanical Strength ◽  
Three Dimensional ◽  
Wavelength Region ◽  
Fabrication Technique ◽  
Artificial Structures ◽  
Near Ultraviolet ◽  
Ultraviolet Wavelength ◽  
Butterfly Wings ◽  
Circular Dichroïsm

Using optical two-beam lithography with improved resolution and enhanced mechanical strength, we demonstrate the replication of gyroid photonic nanostructures found in the butterflyCallophrys rubi. These artificial structures are shown to have size, controllability, and uniformity that are superior to those of their biological counterparts. In particular, the elastic Young’s modulus of fabricated nanowires is enhanced by up to 20%. As such, the circular dichroism enabled by the gyroid nanostructures can operate in the near-ultraviolet wavelength region, shorter than that supported by the natural butterfly wings ofC. rubi. This fabrication technique provides a unique tool for extracting three-dimensional photonic designs from nature and will aid the investigation of biomimetic nanostructures.

scholarly journals Integrating plasmonic nanostructures with natural photonic architectures in Pd-modified Morpho butterfly wings for sensitive hydrogen gas sensing

RSC Advances ◽  
2018 ◽  
Vol 8 (57) ◽  
pp. 32395-32400 ◽  
Author(s):  
Jiaqing He ◽  
Nicolò Simone Villa ◽  
Zhen Luo ◽  
Shun An ◽  
Qingchen Shen ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Three Dimensional ◽  
Hydrogen Gas ◽  
Gas Detection ◽  
Plasmonic Nanostructures ◽  
Butterfly Wings ◽  
Hydrogen Gas Detection ◽  
Morpho Butterfly

Three-dimensional heterogeneous nanostructures that integrate plasmonic nanostructures of Pd with photonic architecture of Morpho butterfly wings can achieve sensitive hydrogen gas detection.

The orbit of Pluto over a long interval of time

1966 ◽  
Vol 25 ◽  
pp. 227-229 ◽  
Author(s):  
D. Brouwer
Keyword(s):  
Periodic Orbit ◽  
Numerical Integration ◽  
Restricted Problem ◽  
Three Dimensional ◽  
The Third ◽  
Circular Restricted Problem ◽  
Resonance Relation

The paper presents a summary of the results obtained by C. J. Cohen and E. C. Hubbard, who established by numerical integration that a resonance relation exists between the orbits of Neptune and Pluto. The problem may be explored further by approximating the motion of Pluto by that of a particle with negligible mass in the three-dimensional (circular) restricted problem. The mass of Pluto and the eccentricity of Neptune's orbit are ignored in this approximation. Significant features of the problem appear to be the presence of two critical arguments and the possibility that the orbit may be related to a periodic orbit of the third kind.

Conformation of Ribosomes from Escherichia Coli

1974 ◽  
Vol 32 ◽  
pp. 210-211
Author(s):  
M. Boublik ◽  
W. Hellmann ◽  
F. Jenkins
Keyword(s):  
Binding Sites ◽  
Ribosomal Proteins ◽  
Fluorescent Dyes ◽  
Protein Biosynthesis ◽  
Three Dimensional ◽  
Spatial Arrangement ◽  
Dimensional Structure ◽  
Complete Understanding ◽  
And Function

The present knowledge of the three-dimensional structure of ribosomes is far too limited to enable a complete understanding of the various roles which ribosomes play in protein biosynthesis. The spatial arrangement of proteins and ribonuclec acids in ribosomes can be analysed in many ways. Determination of binding sites for individual proteins on ribonuclec acid and locations of the mutual positions of proteins on the ribosome using labeling with fluorescent dyes, cross-linking reagents, neutron-diffraction or antibodies against ribosomal proteins seem to be most successful approaches. Structure and function of ribosomes can be correlated be depleting the complete ribosomes of some proteins to the functionally inactive core and by subsequent partial reconstitution in order to regain active ribosomal particles.

Ultrastructural Investigations of the Contractile Filaments of Amoebae

1974 ◽  
Vol 32 ◽  
pp. 188-189
Author(s):  
P.L. Moore
Keyword(s):  
Cytoplasmic Streaming ◽  
Three Dimensional ◽  
Freeze Fracture ◽  
Amoeboid Movement ◽  
Different Types ◽  
Chemical Conditions ◽  
Complete Interpretation

Previous freeze fracture results on the intact giant, amoeba Chaos carolinensis indicated the presence of a fibrillar arrangement of filaments within the cytoplasm. A complete interpretation of the three dimensional ultrastructure of these structures, and their possible role in amoeboid movement was not possible, since comparable results could not be obtained with conventional fixation of intact amoebae. Progress in interpreting the freeze fracture images of amoebae required a more thorough understanding of the different types of filaments present in amoebae, and of the ways in which they could be organized while remaining functional.The recent development of a calcium sensitive, demembranated, amoeboid model of Chaos carolinensis has made it possible to achieve a better understanding of such functional arrangements of amoeboid filaments. In these models the motility of demembranated cytoplasm can be controlled in vitro, and the chemical conditions necessary for contractility, and cytoplasmic streaming can be investigated. It is clear from these studies that “fibrils” exist in amoeboid models, and that they are capable of contracting along their length under conditions similar to those which cause contraction in vertebrate muscles.

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