Results 161 to 170 of about 233,898 (339)

Efficient Robust Spontaneous Parametric Down‐Conversion via Detuning Modulated Composite Segments Designs

open access: yesLaser &Photonics Reviews, EarlyView.
Detuning modulated composite segmentation (DMCS) enables robust spontaneous parametric down‐conversion with sevenfold improved temperature stability compared to conventional designs, opening new possibilities for stable quantum photon sources. ABSTRACT Spontaneous parametric down conversion (SPDC) holds a pivotal role in quantum physics, facilitating ...
Muhammad Erew   +5 more
wiley   +1 more source

A young progenitor for the most common planetary systems in the Galaxy. [PDF]

open access: yesNature
Livingston JH   +41 more
europepmc   +1 more source

Quad‐SPIM: A High‐Speed, Multi‐Color Light‐Sheet Microscope for 3D Imaging of Large Cleared Human Brain Tissues

open access: yesLaser &Photonics Reviews, EarlyView.
A high‐speed, multi‐color light‐sheet microscope, named quad‐SPIM, enables rapid three dimensional (3D) imaging of large cleared human brain samples with simultaneous four‐channel acquisition. This custom‐built system achieves subcellular resolution across centimeter‐scale volumes, maintaining high image quality.
Laura Perego   +11 more
wiley   +1 more source

Extreme properties of a compact and massive accreting black hole host in the first 500 Myr. [PDF]

open access: yesNat Commun
Tripodi R   +31 more
europepmc   +1 more source

Dynamic Retinal Pathology in Glaucoma Progression Revealed by High‐Resolution Functional Imaging in Vivo

open access: yesLaser &Photonics Reviews, EarlyView.
In this work, we investigated the dynamic retinal pathology of glaucoma from onset to late stages through longitudinal in vivo high‐resolution imaging in a silicone oil‐induced ocular hypertension (SOHU) glaucoma mouse model. We developed an optimized adaptive optics two‐photon excitation fluorescence microscopy (AO‐TPEFM) technique for morphological ...
Yiming Fu   +6 more
wiley   +1 more source

Dynamical dark energy in light of the DESI DR2 baryonic acoustic oscillations measurements. [PDF]

open access: yesNat Astron
Gu G   +59 more
europepmc   +1 more source

Motion‐ and Field‐Robust Mesoscopic Whole‐Brain T2*$$ {T}_2^{\ast } $$‐Weighted Imaging at 7 and 11.7 T Using Servo Navigation

open access: yesMagnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To mitigate artifacts related to motion and field changes in high‐resolution T2*$$ {T}_2^{\ast } $$‐weighted human brain imaging using servo navigation at ultra‐high fields up to 11.7 T. Methods MR‐based servo navigators were integrated into a segmented 3D‐EPI sequence to allow for prospective correction of involuntary head motion and ...
Matthias Serger   +15 more
wiley   +1 more source

Calibration‐Free GRAPE pTx Pulses for Homogeneous Spatial‐Selective Excitation at 7T

open access: yesMagnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Extend the universal pulse GRAPE formalism to pulses with a defined spectral response, and apply the concept to spatial selection. Methods We added Bloch simulations at several frequencies for each voxel to the pulse calculation to create universal spectrally‐selective GRAPE pulses.
Daniel Löwen   +6 more
wiley   +1 more source

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