Quartz Tuning Forks and Acoustic Phenomena: Application to Superfluid Helium
نویسندگان
چکیده
منابع مشابه
Application of the equipartition theorem to the thermal excitation of quartz tuning forks
The deflection signal of a thermally excited force sensor of an atomic force microscope can be analyzed to gain important information about the detector noise and about the validity of the equipartion theorem of thermodynamics. Here, we measured the temperature dependence of the thermal amplitude of a tuning fork and compared it to the expected values based on the equipartition theorem. In doin...
متن کاملAcoustic Analysis of Used Tuning Forks.
OBJECTIVE In this study, we evaluated used aluminum tuning forks (TFs) for fundamental frequencies (FF), overtones, and decay times. MATERIALS AND METHODS In total, 15 used (1 C1, 11 C2, and 3 C3) and 1 unused (C2) TFs were tuned, and the recorded sound data were analyzed using the Praat sound analysis program. RESULTS It was found that FFs of the recorded sounds produced by the used C2-TFs...
متن کاملNote: a transimpedance amplifier for remotely located quartz tuning forks.
The cable capacitance in cryogenic and high vacuum applications of quartz tuning forks imposes severe constraints on the bandwidth and noise performance of the measurement. We present a single stage low noise transimpedance amplifier with a bandwidth exceeding 1 MHz and provide an in-depth analysis of the dependence of the amplifier parameters on the cable capacitance.
متن کاملPiezoelectric Quartz Tuning Forks for Scanning Probe Microscopy
In this paper the application of piezoelectric quartz tuning forks in dynamic force microscopy is described. For the introduction we give a historical overview and a comparison with traditional cantilevers. In the second section the theories for tuning forks as oscillators for the dynamic force detection are introduced and in the third section the experimental implementation is described. This ...
متن کاملQuartz Tuning Fork: Thermometer, Pressure- and Viscometer for Helium Liquids
Low Temperature Laboratory, Helsinki University of Technology, Espoo, Finland Institute of Physics ASCR, Na Slovance 2, 182 21 Prague, Czech Republic Centre of Low Temperature Physics, Institute of Experimental Physics SAV, Košice, Slovakia Kapitza Institute for Physical Problems, Kosygina 2, Moscow 119334, Russia Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, 121 16 Prag...
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ژورنال
عنوان ژورنال: Journal of Low Temperature Physics
سال: 2014
ISSN: 0022-2291,1573-7357
DOI: 10.1007/s10909-014-1203-8