Recording weak luminous signals on the background of intensive illumination

1974 ◽  
Vol 17 (12) ◽  
pp. 1894-1896 ◽  
Author(s):  
V. V. Bacherikov ◽  
A. E. Vernyi ◽  
V. V. Kudryavtsev
Keyword(s):  
Luminous Signals

scholarly journals Magnetoliposomes as model for signal transmission

2019 ◽  
Vol 6 (1) ◽  
pp. 181108 ◽  
Author(s):  
G. R. Barreto ◽  
C. Kawai ◽  
A. Tofanello ◽  
A. A. R. Neves ◽  
J. C. Araujo-Chaves ◽  
...  
Keyword(s):  
Communication Systems ◽  
Signal Transmission ◽  
Fluorescent Label ◽  
Supramolecular Systems ◽  
Unilamellar Vesicles ◽  
Fluorescence Detector ◽  
Large Unilamellar Vesicles ◽  
Electrochemical Signal ◽  
Luminous Signals ◽  
Luminous Signal

Liposomes containing magnetic nanoparticles (magnetoliposomes) have been extensively explored for targeted drug delivery. However, the magnetic effect of nanoparticles movement is also an attractive choice for the conduction of signals in communication systems at the nanoscale level because of the simple manipulation and efficient control. Here, we propose a model for the transmission of electrical and luminous signals taking advantage of magnetophoresis. The study involved three steps. Firstly, magnetite was synthesized and incorporated into fusogenic large unilamellar vesicles (LUVs) previously associated with a fluorescent label. Secondly, the fluorescent magnetite-containing LUVs delivered their contents to the giant unilamellar vesicles (GUVs), which were corroborated by magnetophoresis and fluorescence microscopy. In the third step, magnetophoresis of magnetic vesicles was used for the conduction of the luminous signal from a capillary to an optical fibre connected to a fluorescence detector. Also, the magnetophoresis effects on subsequent transmission of the electrochemical signal were demonstrated using magnetite associated with CTAB micelles modified with ferrocene. We glimpse that these magnetic supramolecular systems can be applied in micro- and nanoscale communication systems.

A survey of the signal‐induced noise in photomultiplier detection of wide dynamics luminous signals

1996 ◽  
Vol 67 (9) ◽  
pp. 3274-3280 ◽  
Author(s):  
F. Cairo ◽  
F. Congeduti ◽  
M. Poli ◽  
S. Centurioni ◽  
G. Di Donfrancesco
Keyword(s):  
Luminous Signals

scholarly journals Luminous signals of inelastic dark matter in large detectors

2019 ◽  
Vol 2019 (9) ◽  
Author(s):  
Joshua Eby ◽  
Patrick J. Fox ◽  
Roni Harnik ◽  
Graham D. Kribs
Keyword(s):  
Dark Matter ◽  
Inelastic Dark Matter ◽  
Luminous Signals

scholarly journals High-Index Glass Ball Retroreflectors for Measuring Lateral Positions

Sensors ◽  
2019 ◽  
Vol 19 (5) ◽  
pp. 1082 ◽  
Author(s):  
Andrea Egidi ◽  
Alessandro Balsamo ◽  
Marco Pisani
Keyword(s):  
Lateral Position ◽  
Mie Scattering ◽  
Representative Point ◽  
Glass Ball ◽  
Fitness For Purpose ◽  
Dielectric Spheres ◽  
Noisy Conditions ◽  
Traditional Approaches ◽  
Luminous Signals ◽  
Coherent Source

This paper is concerned with backscattered luminous signals, coming from a particular class of dielectric spheres illuminated by a coherent source. The purpose is to measure the lateral position of the sphere serving as an optical target, to achieve an overall contactless sensor of lateral position in space. Traditional approaches and theories such as ray-tracing and Mie scattering—as implemented in dedicated software—are applied to investigate their fitness for purpose in this application. No previous literature was found dealing with this specific case. Unfortunately, our observations did not match the theories’ predictions to an acceptable degree, and these approaches proved to be unsatisfactory. The rest of the paper focusses then on the development and comparison of suitable algorithms to compute the image coordinates of a representative point, which was in fact the true motivation of this work. Two original algorithms are proposed and discussed. Their robustness and repeatability are benchmarked under noisy conditions and at different distances from the target, with simulated as well as real images. Both resulted capable of sub-pixel accuracy.

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