scholarly journals Magnetically induced enzymatic cascades – advancing towards multi-fuel direct/mediated bioelectrocatalysis

2019 ◽  
Vol 1 (5) ◽  
pp. 1686-1692 ◽  
Author(s):  
Katharina Herkendell ◽  
Andreas Stemmer ◽  
Ran Tel-Vered
Keyword(s):  
Magnetic Field ◽  
Power Generation ◽  
Magnetic Nanoparticles ◽  
Modified Electrodes ◽  
Field Gradients ◽  
Functionalized Magnetic Nanoparticles ◽  
Enzymatic Cascades ◽  
Magnetic Field Gradients ◽  
Mediated Bioelectrocatalysis

Enzyme-functionalized magnetic nanoparticles are channeled by magnetic field gradients onto modified electrodes to activate enzymatic cascades for multi-substrate power generation.

scholarly journals Effects of magnetic field gradients on the aggregation dynamics of colloidal magnetic nanoparticles

Soft Matter ◽  
2015 ◽  
Vol 11 (38) ◽  
pp. 7606-7616 ◽  
Author(s):  
D. Heinrich ◽  
A. R. Goñi ◽  
T. M. Osán ◽  
L. M. C. Cerioni ◽  
A. Smessaert ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Molecular Dynamics ◽  
Magnetic Nanoparticles ◽  
Molecular Dynamics Simulations ◽  
Theoretical Models ◽  
Experimental Results ◽  
Field Gradients ◽  
Magnetic Field Gradients ◽  
Dynamics Simulations

We combined theoretical models, experimental results and molecular dynamics simulations to explain the aggregation dynamics of ferrofluids in the presence of magnetic field gradients.

Confinement of magnetic nanoparticles inside multisegmented nanotubes by means of magnetic field gradients

2012 ◽  
Vol 111 (1) ◽  
pp. 013916 ◽  
Author(s):  
R. F. Neumann ◽  
M. Bahiana ◽  
S. Allende ◽  
J. Escrig ◽  
D. Altbir
Keyword(s):  
Magnetic Field ◽  
Magnetic Nanoparticles ◽  
Field Gradients ◽  
Magnetic Field Gradients

Sub-100 nm Confinement of Magnetic Nanoparticles Using Localized Magnetic Field Gradients

2003 ◽  
Vol 125 (42) ◽  
pp. 12704-12705 ◽  
Author(s):  
Adam R. Urbach ◽  
J. Christopher Love ◽  
Mara G. Prentiss ◽  
George M. Whitesides
Keyword(s):  
Magnetic Field ◽  
Magnetic Nanoparticles ◽  
Field Gradients ◽  
Magnetic Field Gradients ◽  
Localized Magnetic Field

Nuclear magnetic resonance microscopy

1989 ◽  
Vol 47 ◽  
pp. 828-829
Author(s):  
Paul C. Lauterbur
Keyword(s):  
Magnetic Field ◽  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Magnetic Fields ◽  
Signal To Noise ◽  
Field Gradients ◽  
Useful Signal ◽  
Magnetic Field Gradients ◽  
Observation Times ◽  
Nuclear Magnetic

Nuclear magnetic resonance imaging can reach microscopic resolution, as was noted many years ago, but the first serious attempt to explore the limits of the possibilities was made by Hedges. Resolution is ultimately limited under most circumstances by the signal-to-noise ratio, which is greater for small radio receiver coils, high magnetic fields and long observation times. The strongest signals in biological applications are obtained from water protons; for the usual magnetic fields used in NMR experiments (2-14 tesla), receiver coils of one to several millimeters in diameter, and observation times of a number of minutes, the volume resolution will be limited to a few hundred or thousand cubic micrometers. The proportions of voxels may be freely chosen within wide limits by varying the details of the imaging procedure. For isotropic resolution, therefore, objects of the order of (10μm) may be distinguished.Because the spatial coordinates are encoded by magnetic field gradients, the NMR resonance frequency differences, which determine the potential spatial resolution, may be made very large. As noted above, however, the corresponding volumes may become too small to give useful signal-to-noise ratios. In the presence of magnetic field gradients there will also be a loss of signal strength and resolution because molecular diffusion causes the coherence of the NMR signal to decay more rapidly than it otherwise would. This phenomenon is especially important in microscopic imaging.

PFG NMR and internal magnetic field gradients in plant-based materials

2002 ◽  
Vol 20 (7) ◽  
pp. 567-573 ◽  
Author(s):  
Nikolaus Nestle ◽  
Asal Qadan ◽  
Petrik Galvosas ◽  
Wolfgang Süss ◽  
Jörg Kärger
Keyword(s):  
Magnetic Field ◽  
Internal Magnetic Field ◽  
Field Gradients ◽  
Magnetic Field Gradients ◽  
Pfg Nmr

In silico study of spheroids fusion through magnetic field gradients

2021 ◽  
Author(s):  
Cristian F. Rodriguez ◽  
Laura Ortiz C. ◽  
Kevin A. Giraldo R. ◽  
Carolina Munoz C. ◽  
Juan C. Cruz
Keyword(s):  
Magnetic Field ◽  
In Silico ◽  
Field Gradients ◽  
In Silico Study ◽  
Magnetic Field Gradients
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