Results 201 to 210 of about 160,254 (245)
Photon Avalanching Nanoparticles: The Next Generation of Upconverting Nanomaterials?
Advanced Functional Materials, EarlyView.This Perspective outlines the mechanistic foundations that enable photon‐avalanche (PA) behavior in lanthanide nanomaterials and contrasts them with emerging application spaces and forward‐looking design strategies. By bridging threshold engineering, energy‐transfer dynamics, and materials engineering, we provide a coherent roadmap for advancing the ...
Kimoon Lee +7 more
wiley +1 more source
Bio‐Inspired Multimodal Hardware Front‐End Enabled by 2D Floating‐Gate Memory for UAV Perception
Advanced Functional Materials, EarlyView.A MoS2/h‐BN /graphene floating‐gate memory underpins a bio‐inspired multimodal front end that integrates visual, inertial, and airflow cues. A 4 × 4 FG memory array encodes temporal intensity differences, while IMU‐ and airflow‐driven threshold modulation suppresses self‐motion artifacts, enabling fast, low‐power, robust autonomous UAV tracking and ...
Lianghao Guo +11 more
wiley +1 more source
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Amplitude-modulated interferometry
Optics Letters, 1990Specific modulating procedures of the interfering amplitudes in a double-beam interferometer lead to highprecision measurements and insensitivity to changes in reflectivity. The performance of such an interferometer is superior to that of a phase-shifting interferometer because the modulated quantity is the amplitude rather than the phase, which is the
A, Brunfeld, L, Singher, J, Shamir
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Amplitude-modulated laser imager
Applied Optics, 2004Laser systems have been developed to image underwater objects. However, the performance of these systems can be severely degraded in turbid water. We have developed a technique using modulated light to improve underwater detection and imaging. A program, Modulated Vision System (MVS), which is based on a new theoretical approach, has been developed to ...
Linda, Mullen +5 more
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IETE Technical Review, 1992
This paper describes an amplitude modulator circuit that uses a minimum number of components. The basic principle and experimental results followed by merits and demerits of the circuit are presented.
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This paper describes an amplitude modulator circuit that uses a minimum number of components. The basic principle and experimental results followed by merits and demerits of the circuit are presented.
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Quadrature Amplitude Modulation
2019The Quadrature Modulation Scheme (QUAM) uses sine and cosine orthogonality properties to allow the transmission of two different signals in the same carrier, which occupies a bandwidth that is equivalent to the AM signal. The QUAM modulator can be assembled using two DSB-SC modulators.
Marcelo S. Alencar, Valdemar C. da Rocha
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Amplitude Modulation Revisited
Journal of the American Academy of Audiology, 2009openaire +2 more sources
2016
In Amplitude Modulation (AM), the amplitude of the carrier changes in accordance with the input analog signal, while the frequency of the carrier remains the same. The modulated carrier contains several spectral components, requiring frequency domain analysis.
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In Amplitude Modulation (AM), the amplitude of the carrier changes in accordance with the input analog signal, while the frequency of the carrier remains the same. The modulated carrier contains several spectral components, requiring frequency domain analysis.
openaire +1 more source