Results 81 to 90 of about 1,151,802 (252)

Self‐Sustaining Sensing Systems: Integration Strategies and Signal–Power Matching in Energy‐Harvesting Electronics

open access: yesAdvanced Science, EarlyView.
Energy‐harvesting‐integrated sensors couple ambient energy conversion with sensing, processing, and wireless communication. This review organizes recent progress through integration architectures and operating principles, revisiting co‐packaged, monolithic, and co‐functional designs together with always‐on, event‐driven, and multi‐modal sensing modes ...
Taehyun Park   +5 more
wiley   +1 more source

Tunnel Effect for Ultrasonic Waves in Tapered Waveguides

open access: yesAcoustics
Traversal time in the tunneling effect for ultrasonic waves in tapered waveguides is derived considering its analogy with quantum and electromagnetic wave tunneling.
Massimo Germano
doaj   +1 more source

Green's Functions of Non‐Hermitian Systems at Exceptional Deficiency

open access: yesAdvanced Science, EarlyView.
We analyze the responses of a non‐Hermitian lattice system under the condition of exceptional deficiency (ED), when all bands in the system are formed by exceptional points. Using the frequency domain, we identify novel steady‐state responses that root in the broadband super‐Lorentzian Green's function (GF).
Congwei Lu, Guancong Ma
wiley   +1 more source

COMPUTATIONAL ACOUSTICS IN MULTI-FIELD PROBLEMS [PDF]

open access: yes, 2011
We present physical/mathematical models base on partial differential equations (PDEs) and efficient numerical simulation schemes based on the Finite Element (FE) method for multi-field problems, where the acoustic field is the field of main interest ...
MANFRED KALTENBACHER   +1 more
core   +1 more source

Unveiling Anisotropic in‐Plane Thermal Conductivity and Thermal Expansion Coefficient in Low‐Symmetry Few‐Layer ReS2

open access: yesAdvanced Science, EarlyView.
Simultaneous two‐mode Raman thermometry reveals strong in‐plane anisotropic thermal conductivity and thermal expansion coefficients in low‐symmetry few‐layer ReS2. By decoupling thermal transport along the crystallographic a‐ and b‐axes within a single optical configuration, this study provides robust experimental evidence and ab initio theoretical ...
Manab Mandal   +9 more
wiley   +1 more source

The use of acoustics in space exploration

open access: yes, 2007
In recent years increased attention has been paid to the potential uses of acoustics forextraterrestrial exploration. The extent to which acoustics per se is used in these studiesvaries greatly. First, there are the cases in which acoustics is simply the
Leighton, T.G.
core   +1 more source

Coherent states in brillouin light scattering

open access: yesArchives of Acoustics, 2001
The present article describes inelastic light scattering or the theory of photon acoustic- phonon interactions to which the coherent state formalism can be applied; it belongs partly to quantum acoustics.
T. Błachowicz
doaj  

Customized Itinerant Frequency Combs by Cascaded Nonlinear Effects

open access: yesAdvanced Science, EarlyView.
A cascaded third‐order nonlinear system generates an itinerant frequency comb with the comb center frequency decoupled from the cavity resonance. This enables arbitrary spectral scaling, flexible spacing adjustments, and real‐time central‐frequency engineering, allowing comb splicing and subdivision. The resulting versatility and reconfigurability open
Yi Wang   +8 more
wiley   +1 more source

1st Spring School of Acousto-Optics and its Applications Gdańsk–Wieiyea 26–30 May 1980

open access: yesArchives of Acoustics, 2016
The School was organized by the Institute of Physics of the University of Gdańsk and the Sections of Quantum and Molecular Acoustics and Sonochemistry of Polish Acoustical Society and supported by the Institute of Fundamental Technological Research of ...
Antoni ŚLIWIŃSKI
doaj  

Acoustic carpets

open access: yesMachine Graphics & Vision, 2016
Initial-boundary value problem for linear acoustics has been solved in two spatial dimensions. It has been assumed that the initial acoustic field consists of two Gaussian distributions.
Maciej Janowicz   +3 more
doaj   +1 more source

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