Results 41 to 50 of about 216,031 (287)

Artificial local magnetic field inhomogeneity enhances T2 relaxivity [PDF]

Nature Communications, 2017
AbstractClustering of magnetic nanoparticles (MNPs) is perhaps the most effective, yet intriguing strategy to enhance T2 relaxivity in magnetic resonance imaging (MRI). However, the underlying mechanism is still not fully understood and the attempts to generalize the classic outersphere theory from single particles to clusters have been found to be ...
Zijian Zhou, Rui Tian, Zhenyu Wang, Zhen Yang, Yijing Liu, Gang Liu, Ruifang Wang, Jinhao Gao, Jibin Song, Liming Nie, Xiaoyuan Chen   +10 more
openaire   +4 more sources

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Tuning Optical Properties of Cylindrical Nanoinclusions: The Roles of Metal Fraction, Passive and Active Host Matrices

Jefore Ethiopian Journal of Applied Sciences
The optical behavior of nanostructures is profoundly influenced by their geometry and the properties of the surrounding medium. While spherical nanoparticles have been extensively studied, cylindrical nanoinclusions offer unique anisotropic properties ...
Shewa Getachew Mamo
doaj   +1 more source

Coupling configurations between extended surface electromagnetic waves and localized surface plasmons for ultrahigh field enhancement

Nanophotonics, 2018
Local enhancement of electromagnetic (EM) fields near dielectric and metallic surfaces is usually associated with the existence of a confined EM wave at least in one direction. This phenomenon finds applications in enhancing optical spectroscopic signals,
Abdulhalim Ibrahim
doaj   +1 more source

Phosphoinositides and inositol phosphates as molecular glues

FEBS Letters, EarlyView.
Inositol phosphates (IPs) and phosphoinositides (PIPs) regulate diverse eukaryotic processes. Beyond recruiting signaling proteins or acting as structural cofactors, recent studies suggest they mediate protein–protein interactions as natural molecular glues.
Aleshia Seaton‐Terry, Alexander J. Cutright, Mong Na Claire Loi, Jessica Martin, Joseph W. Gilligan, Jakub N. Kubina, Michael J. Arambula, Susanna Tanada Palmu, Daniella Zhou, Raymond D. Blind   +9 more
wiley   +1 more source

Evolution of Cone-Shaped Damage Channels in Aluminum Nanofilm Induced by Repeated High-Power Subpicosecond Terahertz Pulses

Nanomaterials
We investigate the formation of surface periodic structures during ablation of a 20 nm aluminum film on a glass substrate by high-power terahertz pulses.
Sergey I. Ashitkov, Oleg V. Chefonov, Andrey V. Ovchinnikov   +2 more
doaj   +1 more source

Local-field enhancement in an optical force metallic nanotrap: Application to single-molecule spectroscopy [PDF]

, 2006
We study the local-field enhancement in a nanocavity created by optical nanomanipulation. Recently we showed that a metallic probe can modify the optical force experienced by a metallic particle and generate a material selective trapping potential.
Chaumet, Patrick, C., Rahmani, A., Nieto-Vesperinas, M, Chaumet, PC, Rahmani, A, Nieto-Vesperinas, M.   +5 more
core   +1 more source

Field Enhancement in Nanoparticles Due to IR Vortex Beams

, 2022
In this report we present our study of interaction of light carrying OAM (Orbital Angular Momentum) with nanometric metallic discs. Plasmonic effects are known to give rise to high local field enhancement factors in gold nano-discs [1].
Sharma, Ram gopal, Sharma, Vandana, Sinha, Abhisek, Sharma, Sahil   +3 more
core   +1 more source

The role of miR‐335‐5p in the redifferentiation of BRAF p.V600E thyroid cancers

Molecular Oncology, EarlyView.
The BRAF p.V600E mutation promotes thyroid cancer dedifferentiation and radioiodine resistance. Using a network approach, we identified miR‐335‐5p as a key regulator of BRAF‐mutated thyroid tumors. Restoring miR‐335‐5p increased thyroid‐specific gene expression and iodine uptake in cells and organoids.
Valeria Pecce, Simone Bini, Marialuisa Sponziello, Giorgio Grani, Giulia Fiscon, Paola Paci, Lorenzo Farina, Rosa Falcone, Valentina Maggisano, Sebastiano Filetti, Cosimo Durante, Antonella Verrienti   +11 more
wiley   +1 more source

Ultrafast dynamics of femtosecond laser-induced high spatial frequency periodic structures on silicon surfaces

Opto-Electronic Science
Femtosecond laser-induced periodic surface structures (LIPSS) have been extensively studied over the past few decades. In particular, the period and groove width of high-spatial-frequency LIPSS (HSFL) is much smaller than the diffraction limit, making it
Ruozhong Han, Yuchan Zhang, Qilin Jiang, Long Chen, Kaiqiang Cao, Shian Zhang, Donghai Feng, Zhenrong Sun, Tianqing Jia   +8 more
doaj   +1 more source