Results 111 to 120 of about 51,544 (292)

On the Earth’s magnetic field and the Hall effect [PDF]

open access: yesNonlinear Processes in Geophysics, 2003
In a recent paper de Paor put forward a new theory of the Earth's magnetic field that depended on the Hall effect as an energy transfer mechanism. The purpose of this paper is to demonstrate that the mechanism invoked is unimportant except in certain
J. E. Allen
doaj  

Orientational dynamics of magnetotactic bacteria in Earth's magnetic field-a simulation study. [PDF]

open access: yesJ Biol Phys, 2021
Satyanarayana S   +3 more
europepmc   +1 more source

On‐Surface Synthesis of Bismuth Monolayers through Ice‐Confined Redox Reactions

open access: yesAdvanced Materials, EarlyView.
We report an ice‐confined growth strategy for the synthesis of atomically thin 2D bismuth and related 2D metals. This approach involves rapid freezing of a BiCl3 aqueous solution on an aluminum foil using liquid nitrogen, which triggers interfacial redox reactions between the ice and the aluminum surface.
Zexiang He   +8 more
wiley   +1 more source

Self‐Assembled Cobalt Oxide Nanobeads on the Conducting Van der Waals Semi‐Metal PtTe2 for Catalytic Heterostructure

open access: yesAdvanced Materials Interfaces, EarlyView.
Self‐assembled CoO nanobeads on the Van der Waals surface of PtTe2 were synthesized through simple thermal annealing utilizing the residual oxygen in the annealing chamber. In this study, the electrocatalytic effect for oxygen evolution reaction from CoO nanobeads on conducting PtTe2 was confirmed, elucidating the new pathway to design a ...
Minhyuk Choi   +9 more
wiley   +1 more source

A new high-resolution geomagnetic field model for southern Africa

open access: yesSouth African Journal of Science
Earth’s magnetic field is a dynamic, changing phenomenon. The geomagnetic field consists of contributions from several sources, of which the main field originating in Earth’s core makes up the bulk.
Amore E. Nel   +3 more
doaj   +1 more source

Towards Understanding the Interconnection between Celestial Pole Motion and Earth's Magnetic Field Using Space Geodetic Techniques. [PDF]

open access: yesSensors (Basel), 2021
Modiri S   +7 more
europepmc   +1 more source

High Performance Flexible Optical Fiber Sensor Enabled by Er3+/Yb3+ Co‐Doped near Pure‐Green Upconversion Emission Phosphor for Implantable Temperature Sensing

open access: yesAdvanced Materials Interfaces, EarlyView.
A superior double‐cladding optical fiber temperature sensor (OFTS) is fabricated by utilizing a bright and stable near‐pure green UC phosphor NaLu(WO4)2:Er3+/Yb3+ as sensing material. The OFTS exhibits a high temperature measurement accuracy of 0.155°C at 303 K, excellent measuring repeatability and chemical stability, along with strong resistance to ...
Jing Lyu   +4 more
wiley   +1 more source

From the Discovery of the Giant Magnetocaloric Effect to the Development of High‐Power‐Density Systems

open access: yesAdvanced Materials Technologies, EarlyView.
The article overviews past and current efforts on caloric materials and systems, highlighting the contributions of Ames National Laboratory to the field. Solid‐state caloric heat pumping is an innovative method that can be implemented in a wide range of cooling and heating applications.
Agata Czernuszewicz   +5 more
wiley   +1 more source

Observations of the Earth's magnetic field from the Space Station: Measurement at high and extremely low altitude using Space Station-controlled free-flyers [PDF]

open access: yes
Simulation studies established that the main (core), crustal and electrojet components of the Earth's magnetic field can be observed with greater resolution or over a longer time-base than is presently possible by using the capabilities provided by the ...
Frawley, J. J.   +2 more
core   +1 more source

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