The pinhole also reduces the volume from which fluorescence is detected, providing an elliptical detection volume element (magnified in the insert) with submicrometer resolution in two lateral directions the diffraction limited detection volume element is typically smaller than 0.5 µm×0.5 µm×2 µm.
Reasons behind this can be the band-pass filtering aspects of the electrode alone with its detection volume, superposition of action potentials in the detected EMG signal, conduction velocity of the action potential that propagate along the muscle fiber membrane.
This image shows a simulation for elastic collisions between NO and Ne, assuming an isotropic DCS and an infinitely large detection volume, i.e., all scattered molecules are detected with equal efficiency.
Emitted photons were collected through the same objective and spatially filtered through a 70 µm pinhole to limit the effective confocal detection volume.
In addition, ion backflow fraction (IBF) into the detection volume is strongly suppressed.
Particles flowing through the device are dynamically focussed into the detection volume using dielectrophoresis.
The method is organized so that the "heavy" calculations, i.e. sink detection, volume evaluation, constraints verification, etc. are run only once.
This calibration system takes into account the optical properties of sea water, which is used as the detection volume of the ANTARES telescope.
The IceCube neutrino telescope currently being built at the South Pole will be the first telescope with a detection volume of this size.
This miniaturized sensor showed improved performances of small detection volume (1.2 μL), fast analysis (4.42 s), low detection limit (1.5 ppb) and excellent repeatability (1.59%) for chlorine determination.
Optical measurements are made by focussing a beam of light into a detection volume of the order of the size of the particle.
