Results 41 to 50 of about 107,774 (274)

Angular momenta, helicity, and other properties of dielectric-fiber and metallic-wire modes [PDF]

open access: yes, 2018
Spin and orbital angular momenta (AM) of light are well studied for free-space electromagnetic fields, even nonparaxial. One of the important applications of these concepts is the information transfer using AM modes, often via optical fibers and other ...
Alpeggiani, F.   +4 more
core   +7 more sources

Singularity Analysis and Complete Methods to Compute the Inverse Kinematics for a 6-DOF UR/TM-Type Robot

open access: yesRobotics, 2022
Improving the strategies employed to control robotic arms is of great importance because of the increase in their use in advanced supervisory control strategies, such as digital twins.
Jessica Villalobos   +2 more
doaj   +1 more source

Photonic-crystal nano-photodetector with ultrasmall capacitance for on-chip light-to-voltage conversion without an amplifier [PDF]

open access: yes, 2016
The power consumption of a conventional photoreceiver is dominated by that of the electric amplifier connected to the photodetector (PD). An ultralow-capacitance PD can overcome this limitation, because it can generate sufficiently large voltage without ...
Fujii, Takuro   +7 more
core   +1 more source

Fighting against fast speckle decorrelation for light focusing inside live tissue by photon frequency shifting [PDF]

open access: yes, 2020
Light focusing inside live tissue by digital optical phase conjugation (DOPC) has drawn increasing interest due to its potential biomedical applications in optogenetics, microsurgery, phototherapy, and deep-tissue imaging.
Cheng, Zhongtao   +5 more
core   +1 more source

Terahertz imaging demonstrates its diagnostic potential and reveals a relationship between cutaneous dehydration and neuropathy for diabetic foot syndrome patients

open access: yesScientific Reports, 2022
Diabetic foot syndrome, a long term consequence of Diabetes Mellitus, is the most common cause of non-traumatic amputations. Around 8% of the world population suffers from diabetes, 15% of diabetic patients present a diabetic foot ulcer which leads to ...
Goretti G. Hernandez-Cardoso   +9 more
doaj   +1 more source

Myelitis-Predominant Aggressive Phenotype: Unveiling Unique Patterns of Late-Onset Neuromyelitis Optica Spectrum Disorders. [PDF]

open access: yesAnn Neurol
Objective The objective of this study was to compare clinical features and prognosis of late‐onset neuromyelitis optica spectrum disorder (LO‐NMOSD, onset age ≥60 years) with adult‐onset NMOSD (AO‐NMOSD, onset age 18–59 years), and to provide insights for individualized management in elderly patients.
Pu YL   +15 more
europepmc   +2 more sources

Hybrid integration methods for on-chip quantum photonics [PDF]

open access: yes, 2019
The goal of integrated quantum photonics is to combine components for the generation, manipulation, and detection of nonclassical light in a phase-stable and efficient platform.
Aghaeimeibodi, Shahriar   +4 more
core   +2 more sources

Generalised photon sieves: fine control of complex fields with simple pinhole arrays [PDF]

open access: yes, 2015
Spatial shaping of light beams has led to numerous new applications in fields such as imaging, optical communication, and micromanipulation. However, structured radiation is less well explored beyond visible optics, where methods for shaping fields are ...
Li, F.   +3 more
core   +1 more source

Gelatin Used as a Transductor in an Optical Hygrometer Based on a Fabry-Perot Interferometer

open access: yesAdvances in Materials Science and Engineering, 2022
The quantities that are usually measured are time, pressure, temperature, and relative humidity to mention but a few. The word humidity is used when we are dealing with water vapor which is a gas.
Sergio Calixto
doaj   +1 more source

Familial neuromyelitis optica [PDF]

open access: yesNeurology, 2010
Detection of aquaporin-4-specific immunoglobulin G (IgG) has expanded the spectrum of neuromyelitis optica (NMO). Rare reports of familial aggregation have suggested a component of genetic susceptibility but these reports mostly antedated the discovery of the NMO-IgG biomarker and recently updated diagnostic criteria.We report a case series describing ...
M, Matiello   +8 more
openaire   +2 more sources

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