caa a22 4500 445366389 CHVBK 20180317142931.0 cr unu---uuuuu 170323e20111101xx s 000 0 eng 10.1007/s10909-011-0388-3 doi (NATIONALLICENCE)springer-10.1007/s10909-011-0388-3 A New Device for Studying Low or Zero Frequency Mechanical Motion at Very Low Temperatures [Elektronische Daten] [D. Bradley, M. Človec̆ko, M. Fear, S. Fisher, A. Guénault, R. Haley, C. Lawson, G. Pickett, R. Schanen, V. Tsepelin, P. Williams] We have developed a new "floppy wire” device for studying the motion through quantum fluids and solids at very low temperatures. The device is particularly well suited for producing large amplitudes of motion, for measuring drag forces at low frequency, and for studying "zero” frequency dynamics by measuring transient behavior. The device is very versatile and allows motion to be studied over a broad range of velocities and amplitudes. It generates negligible heat leaks and so is ideally suited for ultra low temperature experiments. The device has many potential applications in quantum fluids and solids research, including the study of drag forces at low frequencies in both the laminar and turbulent flow regimes, and the investigation of motion in (super)solid 4He. We discuss the principles and modes of operation of the device and present some preliminary measurements in vacuum, in normal liquid 3He and in superfluid 4He. We also present measurements of a "floppy grid” device, which could be used for generating large volumes of quantum turbulence in superfluids at low temperatures. Springer Science+Business Media, LLC, 2011 Superfluid nationallicence Turbulence nationallicence Hydrodynamics nationallicence Mechanical oscillator nationallicence Bradley D. Department of Physics, Lancaster University, Lancaster, UK aut Človec̆ko M. Center of Low Temperature Physics, Institute of Experimental Physics, Watsonova 47, 04001, Kosice, Slovakia aut Fear M. Department of Physics, Lancaster University, Lancaster, UK aut Fisher S. Department of Physics, Lancaster University, Lancaster, UK aut Guénault A. Department of Physics, Lancaster University, Lancaster, UK aut Haley R. Department of Physics, Lancaster University, Lancaster, UK aut Lawson C. Department of Physics, Lancaster University, Lancaster, UK aut Pickett G. Department of Physics, Lancaster University, Lancaster, UK aut Schanen R. Department of Physics, Lancaster University, Lancaster, UK aut Tsepelin V. Department of Physics, Lancaster University, Lancaster, UK aut Williams P. Department of Physics, Lancaster University, Lancaster, UK aut Journal of Low Temperature Physics Springer US; http://www.springer-ny.com 165/3-4(2011-11-01), 114-131 0022-2291 165:3-4<114 2011 165 10909 https://doi.org/10.1007/s10909-011-0388-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10909-011-0388-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bradley D. Department of Physics, Lancaster University, Lancaster, UK aut NATIONALLICENCE 700 1- Človec̆ko M. Center of Low Temperature Physics, Institute of Experimental Physics, Watsonova 47, 04001, Kosice, Slovakia aut NATIONALLICENCE 700 1- Fear M. Department of Physics, Lancaster University, Lancaster, UK aut NATIONALLICENCE 700 1- Fisher S. Department of Physics, Lancaster University, Lancaster, UK aut NATIONALLICENCE 700 1- Guénault A. Department of Physics, Lancaster University, Lancaster, UK aut NATIONALLICENCE 700 1- Haley R. Department of Physics, Lancaster University, Lancaster, UK aut NATIONALLICENCE 700 1- Lawson C. Department of Physics, Lancaster University, Lancaster, UK aut NATIONALLICENCE 700 1- Pickett G. Department of Physics, Lancaster University, Lancaster, UK aut NATIONALLICENCE 700 1- Schanen R. Department of Physics, Lancaster University, Lancaster, UK aut NATIONALLICENCE 700 1- Tsepelin V. Department of Physics, Lancaster University, Lancaster, UK aut NATIONALLICENCE 700 1- Williams P. Department of Physics, Lancaster University, Lancaster, UK aut NATIONALLICENCE 773 0- Journal of Low Temperature Physics Springer US; http://www.springer-ny.com 165/3-4(2011-11-01), 114-131 0022-2291 165:3-4<114 2011 165 10909 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer