Results 91 to 100 of about 639,860 (349)

Nonvanishing magnetic field in pure electrostatic systems at rest in the curved space-time of Earth [PDF]

arXiv, 2019
Solutions of the Maxwell equations for electrostatic systems at rest on the rotating Earth's surface are shown to exhibit a nonvanishing magnetic field despite zero electric currents in the system. Such a field is of pure geometric origin, and in contrast to the conventional magnetic field of the Earth it can not be screened away by magnetic shielding.
arxiv  

On the hyperfine interaction in rare-earth Van Vleck paramagnets at high magnetic fields [PDF]

, 2002
An influence of high magnetic fields on hyperfine interaction in the rare-earth ions with non-magnetic ground state (Van Vleck ions) is theoretically investigated for the case of $Tm^{3+}$ ion in axial symmetrical crystal electric field (ethylsulphate crystal). It is shown that magnetic-field induced distortions of $4f$-electron shell lead to essential
arxiv   +1 more source

Motor‐Free Soft Robots for Cancer Detection, Surgery, and In Situ Bioprinting

Advanced Healthcare Materials, EarlyView.
Novel motor‐free soft robots for cancer detection, surgery, and in situ bioprinting–are presented. This master‐slave system is constructed from soft fibrous syringe architectures, removing the need for electrical motors and complex control mechanisms, while reducing the physical tremors.
Chi Cong Nguyen, James Davies, Aditya Ashok, Trung Thien Hoang, Anahid Ehteda, Tran Bach Dang, Emanuele Nicotra, Hien A. Tran, Bibhu Sharma, Kefan Zhu, Phuoc Thien Phan, Adrienne Ji, Jingjing Wan, Jelena Rnjak‐Kovacina, Orazio Vittorio, Hoang‐Phuong Phan, Nigel Hamilton Lovell, Thanh Nho Do   +17 more
wiley   +1 more source

Magnetic field gradients in solar wind plasma and geophysics periods [PDF]

arXiv, 2006
Using recent data obtained by Advanced Composition Explorer (ACE) the pumping scale of the magnetic field gradients of the solar wind plasma has been calculated. This pumping scale is found to be equal to 24h $\pm$ 2h. The ACE spacecraft orbits at the L1 libration point which is a point of Earth-Sun gravitational equilibrium about 1.5 million km from ...
arxiv  

Designing for Degradation: Transient Devices Enabled by (Nano)Cellulose

Advanced Materials, EarlyView.
Recent progress in transient devices enabled by (nano)cellulosic materials is reviewed. Transiency mechanisms, advantages of nanocelluloses, and a suite of applications are discussed. A circular thinking approach coupled with life cycle assessment is applied to critically revisit the potential, advantages, and challenges of nanocellulose‐enabled ...
Lucas J. Andrew, Erlantz Lizundia, Mark J. MacLachlan   +2 more
wiley   +1 more source

Contrasting Recording Efficiency of Chemical Versus Depositional Remanent Magnetization in Sediments

Geophysical Research Letters
How and when sedimentary rocks record Earth's magnetic field is complex. Most studies assume a time‐progressive lock‐in mechanism during sediment deposition called depositional remanent magnetization (DRM).
Sophie C. Roud, Stuart A. Gilder
doaj   +1 more source

IGRF-13 model-based analysis of global long-term variation of main magnetic field

地球与行星物理论评
The geomagnetic field is a natural barrier to protect the Earth and maintain the stability of the Earth's environment, and is widely used in various fields as an important strategic resource.
Chuyue Zhou, Hanxian Fang, Die Duan, Chao Xiao, Ganming Ren, Hongtao Huang, Yang Lin   +6 more
doaj   +1 more source

The Magsat Bibliography [PDF]

Publications related to the Magsat project number 228, as of March 1987 are listed. Of these, 34 deal with analysis of the Earth's main magnetic field, 125 with analysis of the Earth's crustal field, and 42 with analysis of the magnetic field originating
Benson, B. J., Langel, R. A.
core   +1 more source

Production and detection of atomic hexadecapole at Earth's magnetic field

, 2007
Anisotropy of atomic states is characterized by population differences and coherences between Zeeman sublevels. It can be efficiently created and probed via resonant interactions with light, the technique which is at the heart of modern atomic clocks and
Acosta, V. M., Auzinsh, M., Budker, D., Gawlik, W., Grisins, P., Higbie, J. M., Kimball, D. F. Jackson, Krzemien, L., Ledbetter, M. P., Pustelny, S., Rochester, S. M., Yashchuk, V. V.   +11 more
core   +1 more source

A Bio‐Inspired Perspective on Materials Sustainability

Advanced Materials, EarlyView.
This perspective discusses natural materials as inspiration for sustainable engineering designs and the processing of materials. First, circularity, longevity, parsimony, and activity are presented as essential material paradigms. The perspective then uses many examples of natural and technical materials to introduce principles such as oligo ...
Wolfgang Wagermaier, Khashayar Razghandi, Peter Fratzl   +2 more
wiley   +1 more source