Results 121 to 130 of about 2,942,065 (392)

Cerebello‐Prefrontal Connectivity Underlying Cognitive Dysfunction in Spinocerebellar Ataxia Type 2

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Spinocerebellar ataxia type 2 (SCA2) is a hereditary cerebellar degenerative disorder, with motor and cognitive symptoms. The constellation of cognitive symptoms due to cerebellar degeneration is named cerebellar cognitive affective syndrome (CCAS), which has increasingly been recognized to profoundly impact patients' quality of life;
Ami Kumar   +7 more
wiley   +1 more source

Sub-optical wavelength acoustic wave modulation of integrated photonic resonators at microwave frequencies [PDF]

open access: yesNature Communications, 2014
Light–sound interactions have long been exploited in various acousto-optic devices based on bulk crystalline materials. Conventionally, these devices operate in megahertz frequency range where the acoustic wavelength is much longer than the optical ...
S. Tadesse, Mo Li
semanticscholar   +1 more source

Photonic Cavity Synchronization of Nanomechanical Oscillators

open access: yes, 2013
Synchronization in oscillatory systems is a frequent natural phenomenon and is becoming an important concept in modern physics. Nanomechanical resonators are ideal systems for studying synchronization due to their controllable oscillation properties and ...
Bagheri, Mahmood   +4 more
core   +1 more source

Clinical Phenotyping of Long COVID Patients Evaluated in a Specialized Neuro‐COVID Clinic

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To report Long COVID characteristics and longitudinal courses of patients evaluated between 4/14/21–4/14/22 at the University of Pennsylvania Neurological COVID Clinic (PNCC), including clinical symptoms, neurological examination findings, and neurocognitive screening tests from a standardized PNCC neurological evaluation approach ...
Luana D. Yamashita   +7 more
wiley   +1 more source

Bottom-up nanocolloidal metamaterials and metasurfaces at optical frequencies

open access: yesComptes Rendus. Physique, 2020
Metamaterials and metasurfaces are artificial composite media engineered to exhibit extraordinary properties of wave propagation. In bulk (3D) metamaterials, such extreme properties may result from non-conventional values of effective homogeneous optical
Baron, Alexandre   +3 more
doaj   +1 more source

Applications of Optical Microcavity Resonators in Analytical Chemistry.

open access: yesAnnual Review of Analytical Chemistry, 2016
Optical resonator sensors are an emerging class of analytical technologies that use recirculating light confined within a microcavity to sensitively measure the surrounding environment.
James H Wade, R. Bailey
semanticscholar   +1 more source

Correspondence of MRI and nTMS With EDSS in Multiple Sclerosis: Longitudinal Follow‐Up Study

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives Considering the characteristics of multiple sclerosis (MS) disease and its impact on motor disability, this study aims to assess the functional integrity of the corticospinal tract by examining motor evoked potentials (MEPs), Expanded Disability Status Scale (EDSS) scores, magnetic resonance imaging (MRI) lesion counts, and ...
Antonia Bralić   +13 more
wiley   +1 more source

Probing the optical near-field interaction of Mie nanoresonators with atomically thin semiconductors

open access: yesCommunications Physics, 2023
Optical Mie resonators based on silicon nanostructures allow tuning of light-matter-interaction with advanced design concepts based on complementary metal–oxide–semiconductor (CMOS) compatible nanofabrication.
Ana Estrada-Real   +12 more
doaj   +1 more source

Ultrafast all-optical wavelength conversion in silicon-insulator waveguides by means of cross phase modulation using 300 femtosecond pulses [PDF]

open access: yes, 2006
In this paper we report the ultrafast all-optical wavelength conversion in Silicon-on-Insulator (SOI) waveguides. We used a pump-probe setup with 300 femtosecond pulses to demonstrate large temporal phase-shifts, caused by the Kerr effect and free ...
Dekker, R.   +3 more
core   +1 more source

Strong Optical Confinement between Non-periodic Flat Dielectric Gratings

open access: yes, 2011
We present a novel design of optical micro-cavity where the optical energy resides primarily in free space, therefore is readily accessible to foreign objects such as atoms, molecules, mechanical resonators, etc.
Beausoleil, Raymond G.   +3 more
core   +1 more source

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