Results 111 to 120 of about 1,592,702 (395)
Advanced Functional Materials, EarlyView.The THz drive of the Mott insulating state of a rare‐earth nickelate induces instantaneous insulator‐metal transition via quantum tunneling of valence electrons across the bandgap. This transition is pure electronic and highly non‐thermal, which may find its applications in ultrafast opto‐electronics with enhanced performance and minimal device size ...
Gulloo Lal Prajapati +7 more
wiley +1 more source
Journal of Mathematics in IndustryIn the automotive industry, the absorption coefficient of a porous material layer is usually measured in an alpha cabin, a reverberant chamber of reduced dimensions where the operational frequency range is limited and the absorbent sample size is ...
Laura Río-Martín +2 more
doaj +1 more source
Between Science and Art: Thin Sound Absorbers Inspired by Slavic Ornaments
Frontiers in Materials, 2019 Acoustic metamaterials have opened fascinating opportunities for manipulation of low-frequency sound and development of compact structures with broadband acoustic performance for noise mitigation applications, room and architectural acoustics.
Anastasiia O. Krushynska
doaj +1 more source
Energies, 2023 The speech intelligibility properties of classrooms greatly influence the learning process of students. Proper acoustics can promote the inclusion of foreign students and children with learning or hearing impairments.
Paolo Croce +3 more
doaj +1 more source
Investigation On The Role of Cavity and Slit of Cavity Resonators to Sound Absorption Behavior [PDF]
, 2011 Slit resonator and also perforated resonator are few kind of room interior finishing. They act as sound absorbers. Gen-erally, they are constructed of at least three basic types of absorbers, such as porous, membrane and cavity compo-nents.These types of
Kristanto, Luciana, Susilo, Nugroho
core
Advanced Functional Materials, EarlyView.The dynamic polarization reversal of coexisting normal and relaxor ferroelectrics in 1D TMAPbI₃ (tetramethylammonium, TMA) is deciphered through combined experimental and theoretical approaches. By bridging atomic‐scale motion, macroscopic polarization switching, and depolarization effects, a universal methodology is established to engineer next ...
Chen Xue +8 more
wiley +1 more source
Theory of amplification of sound (acoustic phonons) by absorption of laser radiation in quantum wires with parabolic potential [PDF]
arXiv, 2002 Based on the quantum transport equation for the electron-phonon system, the absorption coefficient of sound (acoustic phonons) by absorption of a laser radiation in quantum wires with parabolic potential is calculated for the case of monophoton absorption and the case of multiphoton absorption.
arxiv
Room dimensions and absorption inference from room transfer function via machine learning [PDF]
arXiv, 2023 The inference of the absorption configuration of an existing room solely using acoustic signals can be challenging. This research presents two methods for estimating the room dimensions and frequency-dependent absorption coefficients using room transfer functions.
arxiv
Subjective evaluation of an emerging theory of low-frequency sound source localization in closed acoustic spaces [PDF]
, 2014 An earlier reported theory of low-frequency sound-source localization within closed acoustic spaces proposed that virtual image acuity is strongly dependent on sufficient inter-arrival time between a direct sound and its first reflection.
Hawksford, Malcolm O. J., Hill, Adam J.
core
Advanced Functional Materials, EarlyView.A visible light‐responsive polyacrylamide‐azobenzene hydrogel enables safe, reversible stiffness control for studying cell mechanobiology without harmful UV exposure. This approach reveals stem cells respond rapidly to mechanical changes, showing altered shape and protein distribution within one hour.
Aafreen Ansari +11 more
wiley +1 more source