Mechanical Stability of a Cm-Doped Celsian Glass-Ceramic

1982 ◽  
Vol 15 ◽  
Author(s):  
J.L. Routbort ◽  
P. Offermann ◽  
Hj. Matzke
Keyword(s):  
Radiation Damage ◽  
Glass Ceramic ◽  
Mechanical Stability ◽  
The Self ◽  
Waste Materials ◽  
Irradiation Damage ◽  
Limited Attention ◽  
Phase Decomposition ◽  
Α Decay ◽  
Fracture Properties

Radiation damage due to a α-decay of actinides will modify the material used to store nuclear wastes. For example, ionization-induced processes can fragment the oxide bonds of a glass thereby creating gas bubbles. Phase decomposition, swelling, and disordering of crystalline phases are other possibilities. The self-irradiation damage could also affect the fracture properties of the storage materials. Spontaneous failure and fragmentation of some brittle materials have been observed during storage. Yet the problem of fracture of irradiated waste materials has received very limited attention.

Clathrin-Inspired Coating and Stabilization of Liposomes by DNA Self-Assembly

2019 ◽  
Author(s):  
Kevin N. Baumann ◽  
Luca Piantanida ◽  
Javier García-Nafría ◽  
Diana Sobota ◽  
Kislon Voïtchovsky ◽  
...  
Keyword(s):  
Self Assembly ◽  
Mechanical Stability ◽  
Lipid Vesicles ◽  
The Self ◽  
Force Microscopy ◽  
Atomic Force ◽  
Cryo Electron Microscopy ◽  
Further Development ◽  
Liposome Surface ◽  
Dna Coating

The self-assembly of the protein clathrin on biological membranes facilitates essential processes of endocytosis in biological systems and has provided a source of inspiration for materials design by the highly ordered structural appearance. By mimicking the architecture of clathrin self-assemblies to coat liposomes with biomaterials, new classes of hybrid carriers can be derived. Here we present a method for fabricating DNA-coated liposomes by hydrophobically anchoring and subsequently growing a DNA network on the liposome surface which structurally mimics clathrin assemblies. Dynamic light scattering (DLS), ζ-potential and cryo-electron microscopy (cryo-EM) measurements independently demonstrate successful DNA coating. Nanomechanical measurements conducted with atomic force microscopy (AFM) show that the DNA coating enhances the mechanical stability of the liposomes relative to uncoated ones. Furthermore, we provide the possibility to reverse the coating process by triggering the disassembly of the DNA coating through a toehold-mediated displacement reaction. Our results describe a straightforward, versatile, and reversible approach for coating and stabilizing lipid vesicles by an interlaced DNA network. This method has potential for further development towards the ordered arrangement of tailored functionalities on the surfaces of liposomes and for applications as hybrid nanocarrier.

Surface evolution and radiation damage of a zirconolite glass-ceramic by Au ion implantation

2019 ◽  
Vol 478 ◽  
pp. 373-382 ◽  
Author(s):  
Tao Wei ◽  
Yingjie Zhang ◽  
Alan Xu ◽  
Daniel J. Gregg ◽  
Inna Karatchevtseva ◽  
...  
Keyword(s):  
Ion Implantation ◽  
Radiation Damage ◽  
Glass Ceramic ◽  
Surface Evolution

Thermal annealing of natural, radiation-damaged pyrochlore

2017 ◽  
Vol 232 (1-3) ◽  
Author(s):  
Peter Zietlow ◽  
Tobias Beirau ◽  
Boriana Mihailova ◽  
Lee A. Groat ◽  
Thomas Chudy ◽  
...  
Keyword(s):  
Differential Scanning Calorimetry ◽  
Raman Scattering ◽  
Radiation Damage ◽  
Thermal Annealing ◽  
Powder Diffraction ◽  
Scanning Calorimetry ◽  
Natural Radiation ◽  
Α Decay ◽  
X Ray ◽  
Decay Products

AbstractRadiation damage in minerals is caused by the α-decay of incorporated radionuclides, such as U and Th and their decay products. The effect of thermal annealing (400–1000 K) on radiation-damaged pyrochlores has been investigated by Raman scattering, X-ray powder diffraction (XRD), and combined differential scanning calorimetry/thermogravimetry (DSC/TG). The analysis of three natural radiation-damaged pyrochlore samples from Miass/Russia [6.4 wt% Th, 23.1·10

Thermal and mechanical stability of lanthanide-containing glass–ceramic sealants for solid oxide fuel cells

2014 ◽  
Vol 2 (6) ◽  
pp. 1834-1846 ◽  
Author(s):  
Allu Amarnath Reddy ◽  
Ashutosh Goel ◽  
Dilshat U. Tulyaganov ◽  
Mariana Sardo ◽  
Luis Mafra ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Glass Ceramic ◽  
Mechanical Stability ◽  
Solid Oxide ◽  
Oxide Fuel

scholarly journals Sensitivity Improvement of Thermoelectric Hydrocarbon Sensors: Combination of Glass-Ceramic Tapes and Alumina Substrates

Proceedings ◽  
2017 ◽  
Vol 1 (4) ◽  
pp. 403
Author(s):  
Jaroslaw Kita ◽  
Gunter Hagen ◽  
Christopher Schmitt ◽  
Ralf Moos
Keyword(s):  
Thermal Conductivity ◽  
Gas Sensors ◽  
Glass Ceramic ◽  
Mechanical Stability ◽  
Ceramic Materials ◽  
Functional Elements ◽  
Sensor Structure ◽  
Hydrocarbon Gas ◽  
Sensitivity Improvement ◽  
Easy Integration

This contribution presents the integration of glass-ceramic tapes on alumina substrates to increase the sensitivity of thermoelectric hydrocarbon gas sensors. Both ceramic materials have different thermal conductivity. Their combination into one sensor structure significantly improves the sensitivity by at the same time maintaining the excellent mechanical stability at high temperatures. Furthermore, this special technology allows for an easy integration of additional functional elements such as screen-printed thermocouples for temperature control purposes.

Self-limited growth of InAs at 480 °C

1994 ◽  
Vol 9 (12) ◽  
pp. 3022-3024 ◽  
Author(s):  
D. Jung ◽  
S.M. Bedair
Keyword(s):  
Boundary Layer ◽  
Gas Phase ◽  
The Self ◽  
Phase Decomposition ◽  
Limited Growth

Self-limited growth of InAs at 480 °C is achieved by a rotating substrate method with a specially designed susceptor. The residual precursors and the boundary layer are removed by the mechanical shear-off. Prevention of the precursor carryover and the gas-phase decomposition are thought to result in the self-limited growth of InAs at temperatures as high as 480 °C.

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