Results 231 to 240 of about 79,065 (292)

In‐Wheel Piezoelectric DC Power Generator With Zero Resistive Torque

open access: yesAdvanced Science, EarlyView.
In this paper, we present a wheel‐shaped direct‐current piezoelectric generator (DC‐PG) that fundamentally overcomes these constraints by producing phase‐stable DC electricity directly from rolling motion. By embedding this system into suitcase wheels, we demonstrated a fully integrated real‐time location tracking system powered solely by mechanical ...
Hyun Soo Kim   +19 more
wiley   +1 more source

Dielectric Properties of Co-Doped TiO<sub>2</sub> with Mg and Nb for Energy Storage Applications. [PDF]

open access: yesNanomaterials (Basel)
Ferchaud L   +8 more
europepmc   +1 more source

Superconductivity in niobium and niobium-rich niobium-tantalum alloys

Physics Letters A, 1968
Abstract Magnetization measurements in superconducting Nb and Nb-rich NbTa alloys show that the discrepancies between experiment and theory in k 1 and k 2 as function of temperature in Nb do not come from its non-weak coupling nature but probably from the anisotropic electronic structure.
A. Ikushima, T. Mizusaki, T. Odaka
openaire   +1 more source

Niobium diffusion in niobium-doped titanium dioxide

Journal of Solid State Electrochemistry, 2008
The present work studied the self-diffusion coefficient of 93Nb in Nb-doped TiO2 single crystal (4.3 at.% Nb) at high oxygen activity [p(O2) = 21 kPa] over the temperature range 1,073 to 1,573 K. The diffusion-induced 93Nb concentration profile was determined by using secondary ion mass spectrometry (SIMS).
Sheppard, LR   +5 more
openaire   +2 more sources

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