Understanding the role of heavy ion-irradiation induced surface columnar nanostructures through FESEM imaging

Chiodoni, Angelica; Laviano, Francesco; Gerbaldo, Roberto; Ghigo, Gianluca; Gozzelino, Laura; Mezzetti, Enrica; Minetti, B.; Kwok, W. K.

doi:10.1016/j.physc.2010.02.057

Cited by 3 publications

(2 citation statements)

References 19 publications

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“…In figure 4, the in-plane view [001] of a YBCO/CeO 2 /YSZ sample by transmission electron microscopy (TEM) shows the amorphized zone of nanometre cross-section created in the YSZ substrate. A cross-sectional view of columnar defects into a YBCO single crystal is shown in figure 5 [11].…”

Section: Columnar Defect Implantationmentioning

confidence: 99%

Rugged superconducting detector for monitoring infrared energy sources in harsh environments

Laviano¹,

Gerbaldo²,

Ghigo³

et al. 2010

Supercond. Sci. Technol.

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Broadband electromagnetic characterization of hot plasmas, such as in nuclear fusion reactors and related experiments, requires detecting systems that must withstand high flux of particles and electromagnetic radiations. We propose a rugged layout of a high temperature superconducting detector aimed at 3 THz collective Thomson scattering (CTS) spectroscopy in hot fusion plasma. The YBa 2 Cu 3 O 7−x superconducting film is patterned by standard photolithography and the sensing area of the device is created by means of high-energy heavy ion irradiation, in order to modify the crystal structure both of the superconducting film and of the substrate. This method diminishes process costs and resulting device fragility due to membrane or air-bridge structures that are commonly needed for MIR and FIR radiation detection. Moreover the sensing area of the device is wired by the same superconducting material and thus excellent mechanical strength is exhibited by the whole device, due to the oxide substrate. Continuous wave operation of prototype devices is demonstrated at liquid nitrogen temperature, for selected infrared spectra of broadband thermal energy sources. Several solutions, which exploit the advantages coming from the robustness of this layout in terms of intrinsic radiation hardness of the superconducting material and of the needed optical components, are analysed with reference to applications of infrared electromagnetic detectors in a tokamak machine environment.

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Section: Columnar Defect Implantationmentioning

confidence: 99%

Rugged superconducting detector for monitoring infrared energy sources in harsh environments

Laviano¹,

Gerbaldo²,

Ghigo³

et al. 2010

Supercond. Sci. Technol.

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“…In this work, the thermal behavior of the carbon/epoxy laminates and foam‐core sandwich composites used in light aircraft manufactured in China were evaluated using thermogravimetric analysis. To further investigate the participation of each substance, the morphological images of specimens and the residue after pyrolysis at different characteristic temperatures were analyzed using scanning electron microscope (SEM) . Analysis of molecular changes in the thermal decomposition process of the specimens was performed using thermogravimetric Fourier transform infrared spectroscopy (TG‐FTIR).…”

Section: Introductionmentioning

confidence: 99%

Thermal behavior and kinetics study of carbon/epoxy resin composites

Yang

Shen

et al. 2019

Polymer Composites

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Carbon/epoxy laminates and foam‐core sandwich composites are frequently used as engineering materials within the aerospace sector. However, epoxy resin matrix and foam‐core materials are highly flammable. In this work, the thermal behaviors of carbon/epoxy laminates and foam‐core sandwich composites were investigated using thermogravimetric analysis at different heating rates in atmospheric air. The morphological images of specimens and the residue after pyrolysis at different characteristic temperatures were further investigated using scanning electron microscopy. Additionally, thermogravimetric Fourier transform infrared spectroscopy was used to analyze the vapors and gases evolved during the thermal decomposition. It was determined that the pyrolysis reactions of carbon/epoxy laminates and foam‐core sandwich composites consist of three decomposition steps. Furthermore, an increase in the heating rate of each material results in higher initial and final temperatures for each thermal decomposition step. Kinetic parameters for the decomposition for carbon/epoxy composites were estimated using Kissinger, Flynn‐Wall‐Ozawa, and Starink methods, and the corresponding thermodynamic parameters were obtained. Through analysis of the reaction kinetics, it was determined that the pyrolysis reactions of carbon/epoxy composites are not easily activated, requiring significant activation energy, but the series of reactions take place easily once this energy barrier is overcome.

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Strong vortex matching effects in YBCO films with periodic modulations of the superconducting order parameter fabricated by masked ion irradiation

Haag

Zechner

Lang

et al. 2014

Physica C: Superconductivity and its Applications

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Understanding the role of heavy ion-irradiation induced surface columnar nanostructures through FESEM imaging

Cited by 3 publications

References 19 publications

Rugged superconducting detector for monitoring infrared energy sources in harsh environments

Rugged superconducting detector for monitoring infrared energy sources in harsh environments

Thermal behavior and kinetics study of carbon/epoxy resin composites

Strong vortex matching effects in YBCO films with periodic modulations of the superconducting order parameter fabricated by masked ion irradiation

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