Results 71 to 80 of about 1,467 (256)
New Journal of Physics, 2018 A phase-controlled ultralow-threshold phonon laser is proposed by using tunable optical amplifiers in coupled-cavity-optomechanical system. The multiplicative behavior of the individual enhancements, by engineering the phases and strengths of external ...
Yan-Lei Zhang +6 more
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Advanced Science, EarlyView.This review critically examines thermal transport and radiative properties of ultra‐high temperature ceramics for hypersonic flight, advanced nuclear systems, and next‐generation energy conversion devices. It explores phonon–photon–electron interactions, microstructural engineering, thermoelectric conversion, and machine learning‐accelerated multiscale
Zhipeng Pei +8 more
wiley +1 more source
Contribution of Prof. I. Malecki to the Polish School of Acoustics
Archives of Acoustics, 2014 A detailed study of the history of the Polish acoustics does not exist. The easiest way to present such a history might consist in describing the activity of separate teams, gathered around several leading personalities.
J. RANACHOWSKI
doaj
Advanced Science, EarlyView.Multidimensional laser‐induced graphene (LIG) spanning from 0D to 3D architectures is comprehensively reviewed for multifunctional biomedical platforms, including biosensing, theranostics, and bioactive interface applications, which highlights its potentials for point‐of‐care diagnostics, wearable health monitoring, smart drug delivery, and tissue ...
Li Zhang +3 more
wiley +1 more source
Open Seminar on Acoustics OSA'2007
Archives of Acoustics, 2014 It is our pleasure to present the papers submitted for the 54th Open Seminar on Acoustics – OSA 2007 – that was held September 10–14, 2007 in the city of Przemyśl located in the South-East Poland.
Witold Rdzanek, Lucyna Leniowska
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Ultrafast Hot‐Carrier Cooling in CsPbBr3 Supercrystals via Long‐Range Electronic Coupling
Advanced Science, EarlyView.CsPbBr3 supercrystal self‐assembly, which induces long‐range electronic coupling, enables spatial carrier delocalization that accelerates carrier‐LO phonon scattering and weakens the Auger heating. These effects enable ultrafast, excitation‐intensity‐independent hot‐carrier cooling, offering a trade‐off‐free strategy for high‐performance perovskite ...
Junhong Yu +9 more
wiley +1 more source
Advanced Science, EarlyView.Multiferroic order parameters – polarization, magnetization, and ferroelastic strain – are positioned as dynamic design variables for batteries. Their mechanistic roles, practical tuning through fabrication and external fields, and ferroic‐resolved characterization routes are unified into a closed‐loop framework, revealing how coupled ferroic responses
Jiaqi Su +13 more
wiley +1 more source
Tunnel Effect for Ultrasonic Waves in Tapered Waveguides
AcousticsTraversal time in the tunneling effect for ultrasonic waves in tapered waveguides is derived considering its analogy with quantum and electromagnetic wave tunneling.
Massimo Germano
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Resonant acoustic-phonon modes in a quantum wire [PDF]
Physical Review B, 1995 We study the extended acoustic-phonon modes in a cylindrical GaAs quantum wire embedded in bulk AlAs. There are two kinds of resonant acoustic-phonon modes related to the wire dimensions: one is entirely extended in the system and the other is almost confined in the wire.
openaire +3 more sources
How Proton Incorporation Reshapes Lattice Dynamics In BaSnO3‐Type Proton Conductors
Advanced Science, EarlyView.Yttrium‐doped BaSnO3 exhibits isotope‐dependent changes in its low‐energy vibrational density of states upon hydration. Comparison of dry, H2O‐, and D2O‐treated samples re‐veals mass‐dependent phonon renormalization linked to proton dynamics near oxygen va‐cancies, providing experimental insight into hydrogen‐coupled lattice excitations in proton ...
Artur Braun +9 more
wiley +1 more source