Results 41 to 50 of about 13,912 (266)

Fluid Sensing Using Quartz Tuning Forks—Measurement Technology and Applications

Sensors, 2019
We provide an overview of recent achievements using quartz tuning forks for sensing liquid viscosity and density. The benefits of using quartz crystal tuning forks (QTFs) over other sensors are discussed on the basis of physical arguments and issues arising in real world applications.
Thomas Voglhuber-Brunnmaier, Alexander O. Niedermayer, Friedrich Feichtinger, Bernhard Jakoby   +3 more
openaire   +4 more sources

Spring constant of a tuning-fork sensor for dynamic force microscopy

Beilstein Journal of Nanotechnology, 2012
We present an overview of experimental and numerical methods to determine the spring constant of a quartz tuning fork in qPlus configuration. The simple calculation for a rectangular cantilever is compared to the values obtained by the analysis of the ...
Dennis van Vörden, Manfred Lange, Merlin Schmuck, Nico Schmidt, Rolf Möller   +4 more
doaj   +1 more source

Design of a Portable and Low-Cost Mass Sensitive Quartz Tuning Fork Sensor

Proceedings, 2017
The resonance frequency of quartz tuning fork (QTF) depends on the mass adsorbed to its prongs, so it is used to measure minor mass changes and detect target analyte at picogram levels. [...]
Mehmet Altay Ünal, Dilek Çökeliler Serdaroğlu, İsmail Cengiz Koçum   +2 more
doaj   +1 more source

Crossover from hydrodynamic to acoustic drag on quartz tuning forks in normal and superfluid 4He [PDF]

, 2012
We present measurements of the drag forces on quartz tuning forks oscillating at low velocities in normal and superfluid 4He. We have investigated the dissipative drag over a wide range of frequencies, from 6.5 to 600 kHz, by using arrays of forks with ...
Bradley, D. I., Clovecko, M., Deepak, Deepak, Fisher, Shaun, Guise, E., Haley, Richard, Kolosov, O., Pickett, George, Schmoranzer, D., Skrbek, L., Tsepelin, V.   +10 more
core   +1 more source

Calibration of piezoelectric positioning actuators using a reference voltage-to-displacement transducer based on quartz tuning forks

, 2012
We use a piezoelectric quartz tuning fork to calibrate the displacement of ceramic piezoelectric scanners which are widely employed in scanning probe microscopy.
Andres Castellanos-Gomez, Binnig, Carlos R. Arroyo, Gabino Rubio-Bollinger, Nicolás Agraït   +4 more
core   +1 more source

Controlling the quality factor of a tuning-fork resonance between 9 K and 300 K for scanning-probe microscopy [PDF]

, 2011
We study the dynamic response of a mechanical quartz tuning fork in the temperature range from 9 K to 300 K. Since the quality factor Q of the resonance strongly depends on temperature, we implement a procedure to control the quality factor of the ...
, Castellanos-Gomez A, E H Frater, G Ctistis, J L Herek, J P Korterik, Jun X, P W H Pinkse, Pendry J B, S R Huisman, Sarid D, Stemme G, W L Vos   +12 more
core   +13 more sources

Low-temperature, high-resolution magnetic force microscopy using a quartz tuning fork

, 2005
We have developed a low temperature, high resolution magnetic force microscope (MFM) using a quartz tuning fork that can operate in a magnetic field. A tuning fork with a spring constant of 1300 N/m mounted with a commercial MFM cantilever tip was used ...
Cadden-Zimansky, Paul, Chandrasekhar, Venkat, Seo, Yongho   +2 more
core   +1 more source

The Effect of Counterions on the Detection of Cu2+ Ions in Aqueous Solutions Using Quartz Tuning Fork (QTF) Sensors Modified with L-Cysteine Self-Assembled Monolayers: Experimental and Quantum Chemical DFT Study

Chemosensors, 2023
In this study, a sensing device employing a gold-coated quartz tuning fork (QTF) modified with a self-assembled monolayer (SAM) of L-cysteine was evaluated for the sensitive detection of Cu2+ ions in aqueous solutions.
S. Rahman, Mahmoud A. Al-Gawati, Fatimah S. Alfaifi, Muthumareeswaran Muthuramamoorthy, Amal Alanazi, H. Albrithen, Khalid E. Alzahrani, Abdulaziz K. Assaifan, Abdullah N. Alodhayb, P. Georghiou   +9 more
semanticscholar   +1 more source

Force-gradient-induced mechanical dissipation of quartz tuning fork force sensors used in atomic force microscopy

, 2011
We have studied the dynamics of quartz tuning fork resonators used in atomic force microscopy taking into account mechanical energy dissipation through the attachment of the tuning fork base.
A. Castellanos-Gomez, Albers, Castellanos-Gomez, Castellanos-Gomez, Cleveland, Edwards, G. Rubio-Bollinger, Giessibl, Giessibl, Grober, Ihn, Karrai, le Sueur, N. Agraït, Naber, Ng, Oral, Rensen, Rubio-Bollinger, Seo, Shelimov, Smit, Valkering   +22 more
core   +1 more source

Variable - temperature scanning optical and force microscope [PDF]

, 2004
The implementation of a scanning microscope capable of working in confocal, atomic force and apertureless near field configurations is presented. The microscope is designed to operate in the temperature range 4 - 300 K, using conventional helium flow ...
Betzig E., H. Zhu, J. Jevy, N. G. Patil, P. S. Fodor   +4 more
core   +3 more sources