Measurements of acoustic radiation force of ultrahigh frequency ultrasonic transducers using model-based approach [0.03%]
基于模型的超高频超声换能器辐射力测量方法研究
Sangnam Kim,Sunho Moon,Sunghoon Rho et al.
Sangnam Kim et al.
Even though ultrahigh frequency ultrasonic transducers over 60 MHz have been used for single-cell-level manipulation such as intracellular delivery, acoustic tweezers, and stimulation to investigate cell phenotype and cell mechanics, no tec...
Optical coherence viscometry [0.03%]
光学黏度计测量法
Hsiao-Chuan Liu,Matthew W Urban
Hsiao-Chuan Liu
We report a technique, named optical coherence viscometry (OCV), to measure the viscosity of Newtonian fluids in a noncontact manner. According to linear wave theory with small amplitudes, capillary waves are associated with fluid mechanica...
Ultrasound differential phase contrast using backscattering and the memory effect [0.03%]
利用背向散射和记忆效应的超声差分相位对比技术
Timothy D Weber,Nikunj Khetan,Ruohui Yang et al.
Timothy D Weber et al.
We describe a simple and fast technique to perform ultrasound differential phase contrast (DPC) imaging in arbitrarily thick scattering media. Although configured in a reflection geometry, DPC is based on transmission imaging and is a direc...
High-speed label-free two-photon fluorescence microscopy of metabolic transients during neuronal activity [0.03%]
高分辨率双光子荧光显微镜用于观察神经活动期间的代谢瞬变现象
Andrew J Bower,Carlos Renteria,Joanne Li et al.
Andrew J Bower et al.
The brain is an especially active metabolic system, requiring a large supply of energy following neuronal activation. However, direct observation of cellular metabolic dynamics associated with neuronal activation is challenging with current...
Low Gilbert damping and high thermal stability of Ru-seeded L10-phase FePd perpendicular magnetic thin films at elevated temperatures [0.03%]
低温下具有热稳定性的Ru封端L10-FePd薄膜垂直磁各向异性磁性薄层的低Gilbert阻尼和高热稳定性
Delin Zhang,Dingbin Huang,Ryan J Wu et al.
Delin Zhang et al.
Bulk perpendicular magnetic anisotropy materials are proposed to be a promising candidate for next-generation ultrahigh density and ultralow energy-consumption spintronic devices. In this work, we experimentally investigate the structure, t...
An optical Bragg scattering readout for simultaneous detection of all low-order mechanical modes of gallium nitride nanowires in nanowire arrays [0.03%]
用于检测纳米线阵列中氮化镓纳米线所有低阶机械模式的光学布拉格散射读出方法
John P Houlton,Matt D Brubaker,Kris A Bertness et al.
John P Houlton et al.
We report the use of optical Bragg scattering and homodyne interferometry to simultaneously measure all the first order cantilever-mode mechanical resonance frequencies and quality factors (Q) of gallium nitride nanowires (GaN NWs) in 100 N...
Yilin Wang,Wenqi Zhu,Cheng Zhang et al.
Yilin Wang et al.
With rapid development towards shrinking the size of traditional photonic systems such as cameras, spectrometers, displays and illumination systems, there is an urgent need for high performance and ultra-compact functional optical elements....
James D Boyd,Martha E Grady
James D Boyd
We investigate laser-induced acoustic wave propagation through smooth and roughened titanium-coated glass substrates. Acoustic waves are generated in a controlled manner via the laser spallation technique. Surface displacements are measured...
Tobias Hula,Katrin Schultheiss,Aleksandr Buzdakov et al.
Tobias Hula et al.
We report on the impact of nonlinear four-magnon scattering on magnon transport in microstructured Co25Fe75 waveguides with low magnetic damping. We determine the magnon propagation length with microfocused Brillouin light scattering over a...
High spin-wave propagation length consistent with low damping in a metallic ferromagnet [0.03%]
金属铁磁体中长自旋波传输距离与低阻尼相一致
Luis Flacke,Lukas Liensberger,Matthias Althammer et al.
Luis Flacke et al.
We report ultralow intrinsic magnetic damping in Co25Fe75 heterostructures, reaching the low 10-4 regime at room temperature. By using a broadband ferromagnetic resonance technique in out-of-plane geometry, we extracted the dynamic magnetic...