Results 71 to 80 of about 453,506 (286)

Quasiperiodic Fast-propagating Waves Driven by the Tuning-fork Effect during Magnetic Reconnection

open access: yesThe Astrophysical Journal
Through three-dimensional MHD simulations, we have uncovered a kind of fast coronal wave originating from both ends of a current sheet (CS) during a solar eruption.
Jialiang Hu   +10 more
doaj   +1 more source

Nanopipette/Nanorod-Combined Quartz Tuning Fork–Atomic Force Microscope

open access: yesSensors, 2019
We introduce a nanopipette/quartz tuning fork (QTF)–atomic force microscope (AFM) for nanolithography and a nanorod/QTF–AFM for nanoscratching with in situ detection of shear dynamics during performance.
Sangmin An, Wonho Jhe
doaj   +1 more source

Guanosine‐Quadruplex Hydrogels as Dynamic, Mechanically Tunable and Ion Conductive 3D Scaffolds for Cell Culture Applications

open access: yesAdvanced Functional Materials, EarlyView.
Versatile guanosine‐quadruplex (GQ) hydrogels are developed as dynamic biomatrices for cell culture. These scaffolds are fabricated under mild aqueous conditions, present improved stability, tunable mechanical properties within physiological ranges; fibrillar, porous microstructure, ion conductivity, and cytocompatibility.
Neha Thakur   +10 more
wiley   +1 more source

Study of Intrinsic Dissipation Due to Thermoelastic Coupling in Gyroscope Resonators

open access: yesSensors, 2016
This paper presents analytical models, as well as numerical and experimental verification of intrinsic dissipation due to thermoelastic loss in tuning-fork resonator. The thermoelastic analytical governing equations are created for resonator vibrating at
Changlong Li   +3 more
doaj   +1 more source

Defect‐Mediated Inelastic Light Scattering by Infrared Phonons in Hexagonal Boron Nitride

open access: yesAdvanced Functional Materials, EarlyView.
Optically active defects in hexagonal boron nitride enable inelastic stimulated light scattering mediated by infrared‐active phonons, relaxing conventional Raman selection rules. Defect engineering enhances the Stokes‐conversion process and activates both TO‐ and LO‐phonon scattering channels.
Prabhdeep Singh   +4 more
wiley   +1 more source

Tuning Fork Experiment - Coupled Tuning Forks [video]

open access: yes, 2015
NPS PhysicsIn-class Physics DemonstrationsNot so much a tuning fork experiment but a tuning fork demonstration. In this video Dr. Andres Larraza of the Naval postgraduate school in Monterey California demonstrates coupled tuning forks.
Naval Postgraduate School Physics
core   +2 more sources

Research on the resonance characteristics of liquid density and viscosity based on tuning fork structure

open access: yesAIP Advances
In this paper, a new steel tuning fork sensor is designed, aiming to achieve high accuracy measurement of liquid density and viscosity. By establishing the theoretical and simulation models between liquid density, viscosity and tuning fork frequency, and
Xinlei Zhou   +4 more
doaj   +1 more source

Dynamic Observation of Lacy Pattern Formation in a Bone Tissue Model Using Liquid Phase Scanning Transmission Electron Microscopy

open access: yesAdvanced Functional Materials, EarlyView.
Here, we establish a low‐dose liquid‐phase electron microscopy workflow for real‐time observation of biological processes in hydrated conditions. Beam damage is reduced by imaging only 20% of the pixels and reconstructing the complete image using an inpainting algorithm.
Luco Rutten   +7 more
wiley   +1 more source

Bistable Isochoric Chiral Metamaterials with Reprogrammable Multiaxial Responses

open access: yesAdvanced Functional Materials, EarlyView.
An isochoric bistable rotational unit cell enables in situ modification of internal contact conditions post‐fabrication, without altering the global envelope dimensions of the surrounding architecture. By selectively switching between open and closed states, the tessellated chiral metamaterial can reprogram its volumetric response, including bulk ...
Shujia Chen   +3 more
wiley   +1 more source

An Adjustable Tuning Fork [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1938
A portable tertiary frequency standard, adjustable over a small range, is described. The frequency determining element is a valve-maintained tuning fork, adjustment of whose frequency over a relatively small range is accomplished by changing the position of movable weights on the prongs.
openaire   +1 more source

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