Results 51 to 60 of about 570 (155)

Engineered Optical Fibers for Deep‐Tissue Applications

open access: yesAdvanced Optical Materials, Volume 14, Issue 10, 13 March 2026.
This review establishes a foundational framework for designing optical fibers for deep‐tissue medicine. It systematically links material innovations like polymers and hydrogels with structural paradigms to enable state‐of‐the‐art diagnostics, including endoscopy and biosensing, and targeted therapeutics, guiding future clinical translation.
Yuzhen Li   +16 more
wiley   +1 more source

Research Progress on Aerodynamic Noise in Turbomachinery

open access: yesNanjing Hangkong Hangtian Daxue Xuebao
In the context of advancing energy transition and the demand for environmentally friendly technologies, aerodynamic noise has emerged as a critical constraint on the efficient operation and broader application of turbomachinery.
LI Wen   +8 more
doaj   +1 more source

Magneto‐X Effects in Magnetic Soft Materials and Their Applications

open access: yesAdvanced Science, Volume 13, Issue 18, 27 March 2026.
This review systematically explores magnetic soft materials (MSMs), a novel class of composites that transform under magnetic fields. It catalogs fundamental “Magneto‐X” effects, classifies materials by their matrix and magnetic fillers, and highlights transformative applications in soft robotics, biomedical devices, flexible electronics, etc. Finally,
Ziyin Xiang   +5 more
wiley   +1 more source

Phase Hologram by Acoustic Metasurfaces

open access: yesSmall Structures, Volume 7, Issue 3, March 2026.
This work has achieved a breakthrough in holographic communication, realizing phase holographic imaging. The proposed phase holographic concept overcomes the limitations of traditional amplitude holographic energy attenuation. The design of its amplitude compensation method further addresses the key challenge of phase holographic imaging clarity ...
Xiao Guo   +11 more
wiley   +1 more source

Half-Space Sound Field Reconstruction Based on the Combination of the Helmholtz Equation Least-Squares Method and Equivalent Source Method

open access: yesSensors
In practical conditions, near-field acoustic holography (NAH) requires the measurement environment to be a free sound field. If vibrating objects are located above the reflective ground, the sound field becomes non-free in the presence of a reflecting ...
Laixu Jiang   +4 more
doaj   +1 more source

Data extrapolation method for near-field acoustic holography

open access: yesJournal of the Acoustical Society of Japan (E), 1998
We propose a new data smoothing method for near-field acoustic holography (NAH) with the aid of the data extrapolation. This method can reduce the error energy which comes from the finiteness of the measurement aperture. We illustrate our calculational results by using of the computer simulations which apply to the numerically generated data by Fast ...
openaire   +2 more sources

APPLIED ASPECTS OF NEAR-FIELD ACOUSTIC HOLOGRAPHY

open access: yesTransactions of Kremenchuk Mykhailo Ostrohradskyi National University, 2023
Yevhenii Ponomarenko, Kyrylo Trapezon
openaire   +1 more source

High resolution near-field acoustic holography

open access: yes, 2004
High resolution Near-field Acoustic Holography (NAH) is not a widely discussed topic in open literature. For instance articles on automotive or naval applications do not discuss resolutions beyond one centimetre. Electronic appliances on the other hand demand a high spatial resolution, since the components of printed circuit boards become smaller and ...
Scholte, R., Roozen, N.B.
openaire   +1 more source

Numerical techniques for near-field acoustic holography

open access: yes, 2019
Near-field acoustic holography (NAH) has proved to be an enormously successful sound source identification technique, which is widely used in field of acoustics and noise control. The work presented in this thesis aims at developing a novel method for modelling near-field acoustic holography, where the particle velocity on the surface of a vibrating ...
openaire  

Probing radiation forces acting on acoustic bubbles using digital in-line holography. [PDF]

open access: yesUltrason Sonochem
Mauger C   +6 more
europepmc   +1 more source

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