Design of functional composite and all-inorganic nanostructured materials via infiltration of polymer templates with inorganic precursors

2020 ◽  
Vol 8 (31) ◽  
pp. 10604-10627 ◽  
Author(s):  
Diana Berman ◽  
Elena Shevchenko
Keyword(s):  
Nanostructured Materials ◽  
Functional Composite ◽  
Polymer Templates ◽  
Wide Range ◽  
Inorganic Precursors ◽  
Synthesis Of Materials

Robust and efficient approaches for the synthesis of materials with structure, porosity, and composition controlled at the nanoscale are highly important for a wide range of applications.

scholarly journals Mechanical Behavior of Nanostructured Materials

MRS Bulletin ◽  
1999 ◽  
Vol 24 (2) ◽  
pp. 14-19 ◽  
Keyword(s):  
Mechanical Behavior ◽  
Nanostructured Materials ◽  
Structural Control ◽  
Volume Ratio ◽  
Ceramic Materials ◽  
Engineering Properties ◽  
Crystalline Materials ◽  
Wide Range ◽  
Potential Applications ◽  
Structural Scale

Nanocrystalline materials have been attracting rapidly increasing interest in the last decade and have the potential of revolutionizing traditional materials design in many applications via atomic-level structural control to tailor the engineering properties. In addition to interesting physical properties in the areas of magnetics, catalysis, and optics, this class of materials exhibits a broad range of fascinating mechanical behavior. Superplastic deformation behavior has been observed at significantly lower temperatures in ceramic nanoscale powders. Ultrahigh hardnesses have been measured in nanoscale superlattices made of metallic and ceramic materials. Tensile and compressive strengths in nearly all material systems studied have shown anomalously high values at the nanometer-length scale.The development of nanostructured materials is now raising the question of how the different properties change as the microstructural scale is reduced to nanometer dimensions. Among potential applications of nanostructured materials, the design to achieve optimum mechanical properties is a common concern. Traditionally the mechanical strength σ of crystalline materials is believed to be largely controlled by the grain size d, often in the manner described by the Hall-Petch relationship σ= kd−1/2 +σ0. As the structural scale reduces to the nanometer range, the limits to the conventional descriptions of yielding need to be established, and new mechanisms that may come into play at these very small dimensions need to be explored and studied. In addition the intrinsically high interface-to-volume ratio of the nanostructured materials may enhance interface-driven processes to extend the strain to failure and plasticity. These potential gains will have profound technological impact in a wide range of engineering applications, and need to be validated and exploited.

Electron Tomography of Nanostructured Materials – Towards a Quantitative 3D Analysis with Nanometer Resolution

2010 ◽  
Vol 638-642 ◽  
pp. 2517-2522 ◽  
Author(s):  
Christian Kübel ◽  
Dirk Niemeyer ◽  
Robert Cieslinski ◽  
Steve Rozeveld
Keyword(s):  
Nanostructured Materials ◽  
Electron Tomography ◽  
3D Structure ◽  
3D Analysis ◽  
Complex Materials ◽  
Nanometer Resolution ◽  
Quantitative Measurements ◽  
Nano Structures ◽  
Wide Range ◽  
Stem Tomography

Electron tomography has developed into a powerful technique to image the 3D structure of complex materials with nanometer resolution. Both, TEM and HAADF-STEM tomography exhibit tremendous possibilities to visualize nanostructured materials for a wide range of applications. Electron tomography is not only a qualitative tool to visualize nano¬structures, but recently electron tomographic results are also exploited to obtain quantitative measurements in 3D. We evaluated the reconstruction and segmentation process for a heterogeneous catalyst and, in particular, tried to assess the reliability and accuracy of the quantification process. Furthermore, a quantitative analysis of electron tomographic results was compared to macroscopic measurements.

scholarly journals The Self-Assembly and Design of Polyfunctional Nanosystems

2021 ◽  
Vol 22 (4) ◽  
pp. 2223
Author(s):  
Ruslan Kashapov ◽  
Lucia Zakharova
Keyword(s):  
Sustainable Development ◽  
Nanostructured Materials ◽  
Self Assembly ◽  
Building Blocks ◽  
The Self ◽  
Special Issue ◽  
Molecular Building Blocks ◽  
Wide Range ◽  
Scientific Papers ◽  
Current Task

The current task of the molecular sciences is to create unique nanostructured materials with a given structure and with specific physicochemical properties on the basis of the existing wide range of molecules of natural and synthetic origin. A promising and inexpensive way to obtain nanostructured materials is the spontaneous self-assembly of molecular building blocks during random collisions in real dispersive systems in solution and at interfaces. This editorial aims to summarize the major points from the 11 scientific papers that contributed to the special issue “The Self-Assembly and Design of Polyfunctional Nanosystems”, assessing the modern self-assembly potential and strategies for maintaining sustainable development of the nanoindustry.

A General Approach to Patterning Micron-Scale Particles

2006 ◽  
Vol 947 ◽  
Author(s):  
Nathanael Sieb ◽  
Byron D. Gates
Keyword(s):  
Surface Chemistry ◽  
Nanostructured Materials ◽  
Chemical Characteristics ◽  
Physical And Chemical Characteristics ◽  
Wide Range ◽  
Physical And Chemical

ABSTRACTMultiple techniques have been developed to assemble micro- or nanostructured materials into well-defined patterns. These techniques are, however, often dependent on the size, shape, composition and/or surface chemistry of the structures being patterned. We have developed a general approach to pattern materials with a wide range of physical and chemical characteristics. We are able to assemble these materials into isolated or interconnected patterns covering areas up to ∼1 mm2.

The Properties of Geopolymer-Cuo Nanoparticles as a Functional Composite

2019 ◽  
Vol 967 ◽  
pp. 281-285
Author(s):  
Annisa Nur Qadry ◽  
Noor Afifah Kharisma ◽  
Subaer
Keyword(s):  
Raw Materials ◽  
Cuo Nanoparticles ◽  
Alkali Activation ◽  
Functional Material ◽  
X Ray Diffraction ◽  
Functional Composite ◽  
Cuo Nps ◽  
Wide Range ◽  
Structural Applications ◽  
Naoh Solution

CuO nanoparticles (CuO-NPs) have been attracted much attention recently as a functional material. This study was conducted to investigate the properties of geopolymer-CuO-NPs as a functional composite. Geopolymer paste was produced through the alkali-activation method of metakaolin. CuO-NPs was synthesized from precipitation of CuSO4 in NaOH solution. The composites were developed by mixing geopolymer with CuO-NPs varying the concentration of CuO-NPs relative to metakaolin. The structure of the raw materials, as well as the resulting composites, was examined by using x-ray diffraction (XRD) and Scanning Electron Microscopy (SEM). The mechanical properties of the composites were measured by using compressive and flexural measurements. The measurements results showed that geopolymer CuO-NPs composites offer a wide range of potential structural applications.

In vivo doped biosilica from living Thalassiosira weissflogii diatoms with a triethoxysilyl functionalized red emitting fluorophore

MRS Advances ◽  
2018 ◽  
Vol 3 (27) ◽  
pp. 1509-1517 ◽  
Author(s):  
M. Lo Presti ◽  
R. Ragni ◽  
D. Vona ◽  
G. Leone ◽  
S. Cicco ◽  
...  
Keyword(s):  
Nanostructured Materials ◽  
Organic Dye ◽  
Natural Source ◽  
Dye Molecules ◽  
Thalassiosira Weissflogii ◽  
Light Emitting ◽  
Wide Range ◽  
Novel Strategy ◽  
Highly Porous

ABSTRACTDiatoms microalgae represent a natural source of highly porous biosilica shells (frustules) with promising applications in a wide range of technological fields. Functionalization of diatoms’ frustules with tailored luminescent molecules can be envisaged as a convenient, scalable biotechnological route to new light emitting silica nanostructured materials. Here we report a straightforward protocol for the in vivo modification of Thalassiosira weissflogii diatoms’ frustules with a red emitting organic dye based on thienyl, benzothiadiazolyl and phenyl units. The metabolic insertion of the dye molecules into the diatoms shells, combined with an acidic-oxidative isolation protocol of the resulting dye stained biosilica, represents a novel strategy to develop highly porous luminescent biosilica nanostructures with promising applications in photonics.

Concurrent Coupling of Electronic-Density-Functional, Molecular Dynamics, and Coarse-Grained Particles Schemes for Multiscale Simulation of Nanostructured Materials

2005 ◽  
Vol 502 ◽  
pp. 33-38 ◽  
Author(s):  
Shuji Ogata ◽  
Takahiro Igarashi
Keyword(s):  
Molecular Dynamics ◽  
Nanostructured Materials ◽  
Density Functional ◽  
Dft Method ◽  
Md Simulations ◽  
Multiscale Simulation ◽  
Coarse Grained ◽  
Dynamic Simulations ◽  
Electronic Density ◽  
Wide Range

Feature sizes of useful electronic devices are becoming smaller and reaching nanometer ranges. There is increasing demand to perform dynamic simulations of such nano-devices with realistic sizes. To date, various kinds of simulation methods have been used for materials and devices including the density-functional theory (DFT) and the molecular dynamics (MD) for atomistic mechanics and the finite element method for continuum mechanics. We review recent progresses in our multiscale, hybrid simulation schemes that combine those methods. The coarse-grained particles (CG) method originally proposed by Rudd and Broughton [Phys. Rev. B58 (1998), p. R5893] has features suitable to such hybridization. We improve the CG method so that it is applicable to realistic nanostructured materials with large deformations. A novel hybridization scheme that couples the DFT method with the MD method is presented, which is applicable to virtually any selection of the DFT region in a wide range of materials. Hybrid DFT-MD simulations of the H2O reaction with nanostructured Si and alumina systems under stresses are performed, to demonstrate significant effects of stress on the chemical reaction.

Recent Applications of High Resolution Electron Microscopy to Crystalline Arrays of Virus Particles

1978 ◽  
Vol 36 (3) ◽  
pp. 470-482 ◽  
Author(s):  
R.W. Horne
Keyword(s):  
Electron Microscopy ◽  
Image Processing ◽  
Analytical Techniques ◽  
Staining Technique ◽  
High Resolution Electron Microscopy ◽  
Optical Diffraction ◽  
Full Potential ◽  
Virus Particles ◽  
Resolution Electron ◽  
Wide Range

The technique of surrounding virus particles with a neutralised electron dense stain was described at the Fourth International Congress on Electron Microscopy, Berlin 1958 (see Home & Brenner, 1960, p. 625). For many years the negative staining technique in one form or another, has been applied to a wide range of biological materials. However, the full potential of the method has only recently been explored following the development and applications of optical diffraction and computer image analytical techniques to electron micrographs (cf. De Hosier & Klug, 1968; Markham 1968; Crowther et al., 1970; Home & Markham, 1973; Klug & Berger, 1974; Crowther & Klug, 1975). These image processing procedures have allowed a more precise and quantitative approach to be made concerning the interpretation, measurement and reconstruction of repeating features in certain biological systems.

Microfabrication research at the National Submicron Facility

1983 ◽  
Vol 41 ◽  
pp. 86-89
Author(s):  
E.D. Wolf
Keyword(s):  
Integrated Circuits ◽  
Particle Physics ◽  
High Speed ◽  
New Technology ◽  
High Energy ◽  
High Energy Particle ◽  
New Science ◽  
Wide Range ◽  
Intermediate Domain ◽  
Circuit Function

Most microelectronics devices and circuits operate faster, consume less power, execute more functions and cost less per circuit function when the feature-sizes internal to the devices and circuits are made smaller. This is part of the stimulus for the Very High-Speed Integrated Circuits (VHSIC) program. There is also a need for smaller, more sensitive sensors in a wide range of disciplines that includes electrochemistry, neurophysiology and ultra-high pressure solid state research. There is often fundamental new science (and sometimes new technology) to be revealed (and used) when a basic parameter such as size is extended to new dimensions, as is evident at the two extremes of smallness and largeness, high energy particle physics and cosmology, respectively. However, there is also a very important intermediate domain of size that spans from the diameter of a small cluster of atoms up to near one micrometer which may also have just as profound effects on society as “big” physics.

Application of TEM to Deformation, Wear, and Fracture of Ceramics

1974 ◽  
Vol 32 ◽  
pp. 472-473
Author(s):  
B. J. Hockey
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Mechanical Behavior ◽  
Brittle Materials ◽  
High Temperature Strength ◽  
Wide Range ◽  
Corrosive Environments ◽  
Further Development

Ceramics, such as Al2O3 and SiC have numerous current and potential uses in applications where high temperature strength, hardness, and wear resistance are required often in corrosive environments. These materials are, however, highly anisotropic and brittle, so that their mechanical behavior is often unpredictable. The further development of these materials will require a better understanding of the basic mechanisms controlling deformation, wear, and fracture.The purpose of this talk is to describe applications of TEM to the study of the deformation, wear, and fracture of Al2O3. Similar studies are currently being conducted on SiC and the techniques involved should be applicable to a wide range of hard, brittle materials.

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