d-Wave–Induced Josephson Current Counterflow inYBa2Cu3O7/NbZigzag Junctions

By taking into account the interface scattering effect in a d-wave superconductor (S)/insulator layer (I)/d-wave superconductor (S) junction, the temperature dependence of the critical current and the current-phase relation are studied theoretically. It is found that both the barrier scattering and the roughness scattering at the interface always suppress the Andreev reflection and the current-phase relation is almost sinusoidal in the junction. The Josephson current strongly depends on the crystalline axis orientation of the d-wave superconductor in the junction. Some different phenomena appear depending on whether the crystal orientations of the superconductors on the two sides are the same or not, and this is mainly presented in the influence of the zero-energy states formation at the interface on the critical current which changes with temperature and phase.

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AC Josephson current in d-wave superconductor junctions

Advances in Superconductivity XI ◽

10.1007/978-4-431-66874-9_76 ◽

1999 ◽

pp. 339-342 ◽

Cited By ~ 1

Author(s):

Nobukatsu Yoshida ◽

Yukio Tanaka ◽

Satoshi Kashiwaya

Keyword(s):

Josephson Current ◽

D Wave

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Efficient propagation of suspended HL-60 cells in a disposable bioreactor supporting wave-induced agitation at various Reynolds number

Bioprocess and Biosystems Engineering ◽

10.1007/s00449-020-02386-6 ◽

2020 ◽

Vol 43 (11) ◽

pp. 1973-1985

Author(s):

Kamil Wierzchowski ◽

Iwona Grabowska ◽

Maciej Pilarek

Keyword(s):

Growth Rate ◽

Reynolds Number ◽

Specific Growth ◽

Scale Up ◽

Specific Yield ◽

Hydrodynamic Conditions ◽

Animal Cells ◽

Disposable Bioreactor ◽

Wave Induced ◽

D Wave

Abstract Growth of human nonadherent HL-60 cell cultures performed in disposable bioreactor under various hydrodynamic conditions of 2-D wave-assisted agitation has been compared and discussed. Influence of Reynolds number for liquid (ReL) and the kLa coefficient, as key parameters characterized the bioprocessing of HL-60 cells in ReadyToProcess WAVETM 25 system, on reached values of the apparent maximal specific growth rate (μmax) and the specific yield of biomass (Y*X/S) has been identified. The values of ReL (i.e., 510–10,208), as well as kLa coefficient (i.e., 2.83–13.55 h−1), have been estimated for the cultures subjected to wave-induced mixing, based on simplified dimensionless correlation for various presents of WAVE 25 system. The highest values of apparent μmax = 0.038 h−1 and Y*X/S = 25.64 × 108 cells gglc−1 have been noted for cultures independently performed at wave-induced agitation characterized by ReL equaled to 5104 and 510, respectively. The presented results have high applicability potential in scale-up of bioprocesses focused on nonadherent animal cells, or in the case of any application of disposable bioreactors presenting similitude.

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