Making big money from small technology

Hsiao, James C.; Fong, Kenneth T.

doi:10.1038/428218a

Cited by 17 publications

(9 citation statements)

References 2 publications

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“…The actively used method for producing metallic NTs is a template synthesis. It consists in the use of porous matrices, where 1D NSs form by chemical method . Depending on the intended use in the future, hard (SiO 2 /Si, Al 2 O 3 , etc.)…”

Section: Introductionmentioning

confidence: 99%

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Structural and Magnetic Characteristics of Ferrum Nanotubes Obtained at Different Potentials of Electrodeposition

Канюков

Shumskaya²,

Kozlovskiy

et al. 2019

Physica Status Solidi (b)

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Fe nanotubes (NTs) are successfully fabricated into the pores of polyethylene terephthalate (PET) ion‐track membranes by potentiostatic electrochemical deposition technique at different voltages. Morphological peculiarities and main structural parameters at different deposition modes are analyzed. NTs have a body‐centered cubic (BCC) lattice with spatial singony Im‐3m(229) typical for the iron phase and selected crystalline direction [110] along the main axis of the 1D nanostructure (NS). The possibility of changing the NT wall thickness by changing the deposition potential is shown. Micro‐ and macromagnetic characteristics of Fe NTs are analyzed and their relationship with morphological and structural features is discussed. The inner diameter, structural and magnetic characteristics of NSs may be simply modulated by controlling the deposition conditions. The results provide a useful method for fabricating low‐cost and a simply scalable route for the design of both separate 1D hollow metal NSs and 2D anisotropic ferromagnetic structural materials on the base of flexible polymer film, which are important for applications in modern nanoelectronics.

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Section: Introductionmentioning

confidence: 99%

“…It consists in the use of porous matrices, where 1D NSs form by chemical method. [14][15][16][17] Depending on the intended use in the future, hard (SiO 2 /Si, [18,19] Al 2 O 3 , [20] etc.) or flexible matrix (polyethylene terephthalate [PET], PI, and other polymer membranes [21] ) can be used as a template.…”

Section: Introductionmentioning

confidence: 99%

Structural and Magnetic Characteristics of Ferrum Nanotubes Obtained at Different Potentials of Electrodeposition

Канюков

Shumskaya²,

Kozlovskiy

et al. 2019

Physica Status Solidi (b)

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“…Nowadays nanostructures, which have a number of unusual properties are of great interest (for example, [1][2][3][4]). To obtain the nanostructures the method of template synthesis [5], when templates nanopores are as a kind of natural conditions for self-organization of nanostructures with predetermined sizes and shapes are realized, is promising.…”

Section: Introductionmentioning

confidence: 99%

SRIM Simulation of Carbon Ions Interaction with Ni Nanotubes

Канюков¹,

Kutuzau²,

Bundyukova³

et al. 2019

Materials Today: Proceedings

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By template synthesis method nickel nanotubes with diameter of 400 nm and length of 12 μm were produced in the pores of PET template. The nanotubes were modified by irradiation with carbon ions with energy of 28 MeV and a dose of 5 × 10 11 cm -2 . To ensure the maximum efficiency of nanostructures modification process, energy of irradiation was decided by using of SRIM software.Based on SRIM simulation of carbon ions interaction with Ni nanotubes, the areas on which effect of high energy ions will maximum were predicted. A comparative analysis of nanostructures before and after irradiation was carried out by scanning electron microscopy. The maximum change in nanotubes morphology, in the form of destruction of walls, was appeared at a distance of about 10 μm from the start point of C 3+ ions track inside the nanotubes. A substantiation of reason of wall degradation in this area was proposed.

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“…4 Utilized since the 1930s, 5 reaching a peak in research in the 1980s, 3,[6][7][8][9] it is currently applied in a vast array of research disciplines, 10 including the billion dollar nanomaterials industry. 4,11,12 Acid-catalyzed silica solgel processes are used, e.g., to produce xerogels, which find applications in high-temperature ceramics, thermally isolating coatings, molecular filtration, and thin film sensors. 4,10,13 It has been stated that "a critical hurdle in the development of sol-gel techniques for the preparation of inorganic materials is elucidating the effect of key synthesis and processing parameters on the structure of the resulting sols".…”

Section: Introductionmentioning

confidence: 99%

Effect of Gravity on the Gelation of Silica Sols

et al. 2007

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Acid-catalyzed silica polymerization was carried out under gravity conditions varied from 0.01g aboard a reduced gravity aircraft to 70g in a centrifuge. The silicate connectivity of the final xerogels was analyzed using solid state 29 Si NMR and the porosity using nitrogen adsorption. Gravity was found to have an important influence on the occurrence of intra-and intermolecular condensation reactions. Under reduced gravity buoyancy driven-free convection is limited and silica polymerization occurs in a diffusion-limited regime. Intramolecular condensations and densifications prevail and extended coils of cages are formed through cyclization reactions in the sol particles. In terrestrial and high-gravity conditions, bimolecular reactions compete more favorably with internal condensations. More open structures composed of chains and rings are formed. These flexible species delay the onset of gelation, leading to an increase in gelation time as the gravity level is increased. During the subsequent drying procedure, pore collapse changes the structure from meso-to microporous. The porosity of the finally obtained xerogels is mostly defined by the drying conditions of the gel, irrespective of the silicate connectivity.

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Making big money from small technology

Cited by 17 publications

References 2 publications

Structural and Magnetic Characteristics of Ferrum Nanotubes Obtained at Different Potentials of Electrodeposition

Structural and Magnetic Characteristics of Ferrum Nanotubes Obtained at Different Potentials of Electrodeposition

SRIM Simulation of Carbon Ions Interaction with Ni Nanotubes

Effect of Gravity on the Gelation of Silica Sols

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