Results 51 to 60 of about 9,820,718 (312)

Near-Field Analysis of Terahertz Pulse Generation From Photo-Excited Charge Density Gradients [PDF]

open access: yes, 2015
Excitation of photo-current transients at semiconductor surfaces by subpicosecond optical pulses gives rise to emission of electromagnetic pulses of terahertz (THz) frequency radiation.
Natrella, M   +12 more
core   +1 more source

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

open access: yesFEBS 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

Near-field light focusing by wavelength-sized dielectric spheroids for photovoltaic applications [PDF]

open access: yes, 2011
We explore the near-field concentration properties of dielectric spheroidal scatterers with sizes close to the wavelength, using an analytical separation-of-variables method.
Moura Dias Mendes, Manuel Joao de   +3 more
core  

Diversity and complexity in neural organoids

open access: yesFEBS Letters, EarlyView.
Neural organoid research aims to expand genetic diversity on one side and increase tissue complexity on the other. Chimeroids integrate multiple donor genomes within single organoids. Self‐organising multi‐identity organoids, exogenous cell seeding, or enforced assembly of region‐specific organoids contribute to tissue complexity.
Ilaria Chiaradia, Madeline A. Lancaster
wiley   +1 more source

Analysis of Near-Field Characteristics on Improved Structures of Double-Slot Antipodal Vivaldi Antenna

open access: yesSensors
A characterization of near-field impulse responses based on electromagnetic (EM) near-field data from an EM solver to explore features of the propagation process on a well-known wideband traveling wave antenna—double-slot Vivaldi antenna—is presented in ...
Ha Hoang   +2 more
doaj   +1 more source

Subwavelength Nanostructuring of Gold Films by Apertureless Scanning Probe Lithography Assisted by a Femtosecond Fiber Laser Oscillator

open access: yesNanomaterials, 2018
Optical methods in nanolithography have been traditionally limited by Abbe’s diffraction limit. One method able to overcome this barrier is apertureless scanning probe lithography assisted by laser.
Ignacio Falcón Casas, Wolfgang Kautek
doaj   +1 more source

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

open access: yesFEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure   +3 more
wiley   +1 more source

Plasmonic Properties of Nano- and Microscale Dielectric Substrates-Supported Nanoshell Dimers: Effects of Type and Propagation Direction of Excitation Light

open access: yesIEEE Photonics Journal, 2019
Herein, we report a finite element method simulated near-field spectra of single nanoshell dimers placed over nano- and microscale dielectric substrates.
Gour Mohan Das   +2 more
doaj   +1 more source

Near-field radiative transfer in spectrally tunable double-layer phonon-polaritonic metamaterials

open access: yes, 2018
Understanding of near-field radiative transfer is crucial for many advanced applications such as nanoscale energy harvesting, nano-manufacturing, thermal imaging, and radiative cooling.
Elçioğlu, Elif Begüm   +3 more
core   +1 more source

Near-field Cosmology with the VLT [PDF]

open access: yes, 2008
5 pages, 3 figures, to appear in the proceedings of the ESO workshop "Science with the VLT in the ELT era", Springer Astrophysics and Space Science Proceedings, editor A ...
Mieske, Steffen, Jerjen, Helmut
openaire   +2 more sources

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