Results 71 to 80 of about 2,071,116 (352)

Three-dimensional multiresonant lossy sonic crystal for broadband acoustic attenuation: Application to train noise reduction

open access: yesApplied Acoustics, 2019
Broadband acoustic attenuation produced by a three dimensional (3D) locally resonant sonic crystal (LRSC), exploiting both the multiple coupled resonances and the Bragg band gaps, is numerically and experimentally reported in this work.
Théo Cavalieri   +4 more
semanticscholar   +1 more source

High Entropy Wide‐Bandgap Borates with Broadband Luminescence and Large Nonlinear Optical properties

open access: yesAdvanced Functional Materials, EarlyView.
High‐entropy rare‐earth borates exhibit excellent nonlinear optical and broadband luminescence properties arising from multi‐component doping, chemical disorder, increased configurational entropy, and increased lattice and electronic anharmonicity. This formulation enabled us to obtain a large, environmentally stable single crystal with 3X higher laser‐
Saugata Sarker   +14 more
wiley   +1 more source

Аdaptive broadband low-noise RF amplifier

open access: yesДоклады Белорусского государственного университета информатики и радиоэлектроники, 2020
Adaptive broadband low-noise radio frequency amplifiers (ABLNRFA) are widely used in the construction of systems for protecting radio receiving paths from nonlinear damage in a non-stationary electromagnetic environment (EME).
I. Yu. Malevich, P. V. Zayats
doaj   +1 more source

Customised enriched acoustic environment for sound therapy of tinnitus

open access: yesActa Acustica, 2021
Tinnitus is an auditory disorder very difficult to treat. Whereas up until now there is not a “cure” for tinnitus, the most extended treatment combines counselling with sound therapy. When this sound is a broadband noise in the audio frequency band, this
Cobo Pedro   +2 more
doaj   +1 more source

Single-photon-level light storage in cold atoms using the Autler-Townes splitting protocol

open access: yes, 2019
Broadband spin-photon interfaces for long-lived storage of photonic quantum states are key elements for quantum information technologies. Yet, reliable operation of such memories in the quantum regime is challenging due to photonic noise arising from ...
Cooke, Logan   +4 more
core   +1 more source

Photon-noise limited sensitivity in titanium nitride kinetic inductance detectors [PDF]

open access: yes, 2015
We demonstrate photon-noise limited performance at sub-millimeter wavelengths in feedhorn-coupled, microwave kinetic inductance detectors (MKIDs) made of a TiN/Ti/TiN trilayer superconducting film, tuned to have a transition temperature of 1.4~K.
Beall, Jim   +16 more
core   +2 more sources

Exciton‐Polaritons in Nanoscale Metal‐Organic Frameworks: A Platform for the Reversible Modulation of Strong Light‐Matter Coupling via the Chemical Environment

open access: yesAdvanced Functional Materials, EarlyView.
Strong exciton‐photon coupling is achieved by integrating porphyrin ligand‐based MOF nanoparticles in optical cavities, as evidenced by pronounced polariton branch anticrossing. The porous nature of the resonator enables precise, reversible tuning via vapor pressure, unlocking unprecedented chemical‐environment controlled dynamic polaritonic platforms ...
Beatriz de Sola‐Báez   +7 more
wiley   +1 more source

Indirect Band Edge and Chain‐Locked Linear Dichroism in the Quasi‐1D Van der Waals Antiferromagnet AgCrP2S6

open access: yesAdvanced Functional Materials, EarlyView.
AgCrP2S6 reveals a momentum‐indirect band edge (≈1.35 eV) and chain‐locked linear dichroism: the first direct transitions emerge at 1.6–1.8 eV for E||a. Resonant Raman and photoemission corroborate this assignment. In ACPS/graphene heterostructures, photocurrent turns on above ≈1.5 eV and follows the same polarization selection rules (anisotropy ≈0.53),
Oleksandr Volochanskyi   +9 more
wiley   +1 more source

Identification and control of acoustic radiation modes [PDF]

open access: yes, 2002
A formulation is given of reduced-order acoustic radiation sensors and\ud reduced-order actuators for broadband sound fields. Methods are presented\ud to determine these descriptions from measured data, and their\ud application in systems for broadband ...
Berkhoff, Arthur P.
core   +1 more source

A wideband noise-canceling CMOS LNA exploiting a transformer [PDF]

open access: yes, 2006
A broadband LNA incorporating single-ended to differential conversion, has been successfully implemented using a noise-canceling technique and a single on-chip transformer. The LNA achieves a high voltage gain of 19dB, a wideband input match (2.5-4.0 GHz)
Blaakmeer, Stephan C.   +3 more
core   +5 more sources

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