Results 151 to 160 of about 365,101 (374)

Propagation of sound through a sheared flow [PDF]

open access: yes
Sound generated in a moving fluid must propagate through a shear layer in order to be measured by a fixed instrument. These propagation effects were evaluated for noise sources typically associated with single and co-flowing subsonic jets and for ...
Karamcheti, K.   +2 more
core   +1 more source

A Soft Microrobot for Single‐Cell Transport, Spheroid Assembly, and Dual‐Mode Drug Screening

open access: yesAdvanced Materials, EarlyView.
A soft, untethered hydrogel microrobot enables precise single‐cell delivery, self‐assembly into 3D spheroids, and real‐time thermal actuation. Driven by light‐induced convection and embedded with gold nanorods and temperature sensors, the microrobot guides cells, modulates local microenvironments, and supports drug testing.
Philipp Harder   +3 more
wiley   +1 more source

Polish Seminar on Acoustics (OSA 2000)

open access: yesArchives of Acoustics
XLVII OSA’2000 is a significant scientific forum for presenting the experience and achievements from basic fields of both the experimental and theoretical acoustics as well as its applications.
Editorial Board Archives of Acoustics
doaj  

Celebrations of 50 years of the Acoustic Centre at the Adam Mickiewicz University in Poznań

open access: yesArchives of Acoustics, 2014
The year 2006 witnessed the 50 anniversary of establishing the Chair of Acoustics and Theory of Vibrations at the Adam Mickiewicz University in Poznań, which was the first and only in the country academic centre of acoustics.
Urszula JORASZ
doaj  

Physical Intelligence in Small‐Scale Robots and Machines

open access: yesAdvanced Materials, EarlyView.
“Physical intelligence” (PI) empowers biological organisms and artificial machines, especially at the small scales, to perceive, adapt, and even reshape their complex, dynamic, and unstructured operation environments. This review summarizes recent milestones and future directions of PI in small‐scale robots and machines.
Huyue Chen, Metin Sitti
wiley   +1 more source

Active Acoustics in Concert Halls – A New Approach

open access: yesArchives of Acoustics, 2014
Active acoustics offers potential benefits in music halls having acoustical shortcomings and is a relatively inexpensive alternative to physical modifications of the enclosures.
Wieslaw WOSZCZYK
doaj  

Sculpting the Future of Bone: The Evolution of Absorbable Materials in Orthopedics

open access: yesAdvanced Materials, EarlyView.
This review summarizes the current status of polymeric, ceramic, and metallic absorbable materials in orthopedic applications, and highlights several innovative strategies designed to enhance mechanical performance, control degradation, and promote bioactivity. We also discuss the progress and translational potential of absorbable materials in treating
Zhao Wang   +13 more
wiley   +1 more source

Recent Langley helicopter acoustics contributions [PDF]

open access: yes
The helicopter acoustics program at NASA Langley has included technology for elements of noise control ranging from sources of noise to receivers of noise. The scope of Langley contributions for about the last decade is discussed.
Morgan, Homer G.   +2 more
core   +1 more source

Chiral Acoustic Phonon and Conservation of Pseudoangular Momentum in α‐Quartz

open access: yesAdvanced Materials, EarlyView.
Chiral acoustic phonons in α‐quartz are probed via Brillouin light scattering, exploiting the photon's helicity and the crystal's handedness. The interaction obeys a selection rule arising from pseudoangular momentum conservation, enabling direct optical access to phonon chirality in nonsymmorphic crystals.
Changsoo Kim   +8 more
wiley   +1 more source

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