Results 31 to 40 of about 580,177 (156)
Nature, 1939 WHEN quartz powder, obtained by finely grinding pure Brazilian pebble, is put into neutral water the pH is rapidly lowered to about 6.4. This acidity has been attributed to silicic acid, but such an explanation seems unlikely for the following reasons.
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Thermoelectrically-cooled quartz microbalance [PDF]
, 1975 Temperature of microbalance can be maintained at ambient temperature or held at some other desired temperature. Microbalance has tow-stage thermoelectric device that controls temperature of quartz crystal. Heat can be pumped to or from balance by Peltier
Mckeown, D.
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Movement of dislocations in quartz [PDF]
Proceedings of the 45th Annual Symposium on Frequency Control 1991, 2002 When quartz is subjected to high stress and temperature, it flows (plastically deforms) through a mechanism involving the movement of dislocations. The author discusses historical background and current theories of dislocations in quartz. A review is given of the literature, including geophysical work, and its implications for frequency control ...
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Pseudo-two-girdles c-axis fabric patterns in a quartz-feldspar mylonite (Costabona granodiorite, Canigo massif) [PDF]
, 2012 An example of the relationship that exist between the preferred crystaliografic orientation of quartz grains and the attitude of the mylonite foliation of quartz-feldspar mylonites is described. These rocks are the result of the inhomogeneous deformation
Casas Tuset, Josep Maria
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Nature of Radiation-Induced Defects in Quartz
, 2015 Although quartz ($\rm \alpha$-form) is a mineral used in numerous applications wherein radiation exposure is an issue, the nature of the atomistic defects formed during radiation-induced damage have not been fully clarified.
Bauchy, Mathieu +4 more
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Permanent Polarity of Quartz [PDF]
Nature, 1886 THE second note in NATURE (Feb. 4, p. 325) contains an account of an “important discovery” by Dr. O. Tumlirz, which is wrong in all essential particulars. The permanent polarity discovered by that gentleman is not diamagnetic, but paramagnetic. Nor is it correct that “Dr.
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, 2011 The detailed analysis of the structural variations of three GeO$_2$ and SiO$_2$ polymorphs ($\alpha$-quartz, $\alpha$-cristobalite, and rutile) under compression and expansion pressure is reported.
Böhm +38 more
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The Attachment of Quartz Fibres [PDF]
Proceedings of the Physical Society of London, 1894 n ...
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Laser-assisted photothermal imprinting of nanocomposite [PDF]
, 2004 We report on a laser-assisted photothermal imprinting method for directly patterning carbon nanofiber-reinforced polyethylene nanocomposite. A single laser pulse from a solid state Nd:YAG laser (10 ns pulse, 532 nm and 355 nm wavelengths) is used to ...
Chen, S. C., Lu, Y., Shao, D. B.
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Electric field cancellation on quartz: a Rb adsorbate induced negative electron affinity surface
, 2015 We investigate the (0001) surface of single crystal quartz with a submonolayer of Rb adsorbates. Using Rydberg atom electromagnetically induced transparency, we investigate the electric fields resulting from Rb adsorbed on the quartz surface, and measure
Kim, E. +5 more
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