Results 31 to 40 of about 157,060 (311)
Balanced detection for self-mixing interferometry
Optics Letters, 2017 We propose a new detection scheme for self-mixing interferometry using two photodiodes for implementing a differential acquisition. The method is based on the phase opposition of the self-mixing signal measured between the two laser diode facet outputs.
Li, Kun +4 more
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Analytical Model of Double Barrier THz Rectifier
Proceedings, 2017 The application of the new structure to the complex field of THz receivers requires the availability of an analytical model, reliable and able to highlight the dependence on the parameters of the physical structure.
Fabrizio Palma, Rosario Rao
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Proximity sensor using self-mixing effect
2018 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), 2018 This paper is about the utilization of the well-known self-mixing effect as base for the development of a novel proximity detector. The common used setup for this kind of a sensor is based on two elements: a laser as an emitter and a position-sensitive sensor as a detector.
M. Norgia, A. Pesatori, F. Cavedo
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Harmonic levels in self-mixing interferometry [PDF]
2010 Conference on Optoelectronic and Microelectronic Materials and Devices, 2010 Simulation corresponding with experimental data for self-mixing velocimetry is demonstrated. A novel relationship linking optical feedback strength to harmonic levels in the self-mixing signal is presented. © 2010 IEEE.
Nikolic, M. +4 more
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Stochastic Modelling and Self Tuning Control of a Continuous Cement Raw Material Mixing System [PDF]
Modeling, Identification and Control, 1980 The control of a continuously operating system for cement raw material mixing is studied. The purpose of the mixing system is to maintain a constant composition of the cement raw meal for the kiln despite variations of the raw material compositions ...
Hannu T. Toivonen +2 more
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Self-Mixing Interferometry for Biomedical Signals Sensing
IEEE Journal of Selected Topics in Quantum Electronics, 2014 Self-mixing interferometry is a noncontact method well suited for measuring a variety of biological signals, like blood pressure wave at wrist and thorax (the optical stethoscope), blood velocity in vein and in external circulation, THz echoes from skin, ear drum vibration, and oculomotor reflex measurements.
S. Donati, NORGIA, MICHELE
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Passive Radar-Based Parameter Estimation of Low Earth Orbit Debris Targets
AerospaceMajor space agencies such as NASA and the ESA have long reported the growing dangers caused by resident space objects orbiting our planet. These objects continue to grow in number as satellites are imploded and space debris impacts each other, causing ...
Justin K. A. Henry, Ram M. Narayanan
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Impact of vibrations on the final characteristics of normal and self-compacting concrete [PDF]
Materials Research, 2013 The quality and durability of normal concrete directly depends on the number and the shape of voids, so, in order to produce durable concrete, it is necessary to reduce the amount of air that is trapped inside the concrete, which is usually done by ...
Sandra Juradin +2 more
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Vibration, 2023 Self-mixing interferometry (SMI) is suitable to sense and measure vibrations of amplitudes ranging from picometers to millimeters at frequencies from sub-Hz to MHz’s.
Silvano Donati
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Children with acute lymphoblastic leukemia (ALL) are at risk of severe outcomes from SARS‐CoV‐2 (SCV2). In the post‐pandemic context, where most children have been infected with SCV2, there are limited data on whether vaccination remains beneficial in children with ALL.
Janna R. Shapiro +11 more
wiley +1 more source