![]() 23 In setup 2 the fork was made in China by Fronter Electronics, product number DT26.ĭonnelly R.J., Barenghi C.F., (1998). In setup 1 the same type of fork was used as in 3He measurements at 29 bar pressure. Roach P.R., Eckstein Y., Meisel M.W., Aniola-Jedrzejek L., (1983). Furthermore the piezoelectric effect of quartz allows to excite and detect the oscillation of the tuning fork fully electrically. The fork used in the zero pressure measurements was manufactured in Taiwan and was obtained from RS Company under stock number 226–1437, brand C-MAC Frequency Products and manufacturer’s part number A103C.Ī. While an AT-cut crystal exhibits a cubic temperature stability curve (Figure 1), BT-cut crystals have a parabolic curve (Figure 2). The cut type refers to the angle at which the quartz bars are cut to create crystal wafers. The fork used in the measurements at 29 bar pressure was manufactured in Japan and was obtained from RS Company under stock number 472-1161, brand Fox Electronics and manufacturer’s part number NC26. temperature curve of a crystal depends on the type of cut used during manufacturing. 1 In QEPAS, a quartz tuning fork (QTF) is used as a sensitive acoustic wave transducer. König R., Esquinazi P., Pobell F., (1993). Quartz-enhanced photoacoustic spectroscopy (QEPAS) is one of the most sensitive optical gas sensing techniques. Skyba P., Nyéki J., Gažo E., Makroczyová V., Bunkov Yu.M., Sergackov D.A., Feher A., (1997). McCarty, Thermophysical Properties of Helium-4 from 2 to 1500 K with Pressures to 1000 atm, Technical Note 631, National Bureau of Standards, Gaithersburg, Maryland (1972).įrank Pobell, (1996). McCarty, The Properties of Critical Helium Gas Technical Report, University Oregon (1998) R. Morishita M., Kuroda T., Sawada A., Satoh T., (1989). Martinez E.N., Esquinazi P., Luzuriaga J., (1990). Lamb, Hydrodynamics, Dover Publications, New York (1945). Milne-Thomson, Theoretical hydrodynamics, Dover Publications, New York (1996) H. Grober, Tip-sample distance control for near-field scanning optical microscopes, in Near-Field Optics, M. 126, 139 (2002)–vibrating wire resonator in 3He – 4He solution. Yano H., Handa A., Nakagawa H., Obara K., Ishikawa O., Hata T., Nakagawa M., J. –electrically driven oscillating grid in 4He-II. –electrically driven magnetically levitated oscillating sphere in 4He-II. Rychen J., Ihn T., Studerus P., Herrmann A., Ensslin K., Hug H.J., van Schendel P.J.A., Güntherodt H. ![]() Control 35, 323 (1988) – a survey of quartz resonator sensor technologies.ĭ. Eernisse E.P., Ward R.W., and Wiggins R.B., IEEE Trans.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |