quartz crystal


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quartz crystal

a thin plate or rod cut in certain directions from a piece of piezoelectric quartz and accurately ground so that it vibrates at a particular frequency
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

quartz crystal

[′kwȯrts ¦krist·əl]
(electronics)
A natural or artificially grown piezoelectric crystal composed of silicon dioxide, from which thin slabs or plates are carefully cut and ground to serve as a crystal plate.
(mineralogy)
rock crystal
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

quartz crystal

A slice of quartz ground to a prescribed thickness that vibrates at a steady frequency when stimulated by electricity. The tiny crystal, about 1/20th by 1/5th of an inch, creates the computer's heartbeat. Without the quartz crystal, there would be no computers as we know them today! See clock and MHz.
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
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References in periodicals archive ?
The following assumptions were adopted in order to simplify the analysis: the rigidities of the quartz crystal chip groups, as well as the same sensitivity and symmetrical uniform layout, are identical.
Principle Research on a Novel Piezoelectric 12-DOF Force/Acceleration Sensor
[1.] Marrison, W.A., "The Evolution of the Quartz Crystal Clock," Bell System Technical Journal, 27:510-588, 1948, doi: 10.1002/j.15387305.1948.tb01343.x.
MEMS oscillators with improved resilience for harsh automotive environments
Complete quartz crystals (1, 2), a quartz sphere cut from a crystal (3) and thin quartz plates cut parallel to the crystal faces of prisms and rhombs (4) were used for the hydrothermal experiments (Fig.
Experimental study of anisotropy of quartz dissolution and its role in fluid migration in rocks
Choi, Measurement of nanoparticle concentration using quartz crystal microgravimetry, Journal of Physical Chemistry B 114 (49), 16112-16117 (2010).
Processing and Characterization of Nanoparticle Coatings for Quartz Crystal Microbalance Measurements
(2007) Photo-derivatized polymer thin films at quartz crystal microbalance surfaces: sensors for carbohydrate-protein interactions.
Wireless-electrodeless quartz-crystal-microbalance biosensors for studying interactions among biomolecules: a review
The three cristalliers in question, Christophe Lelievre, Michael Bibollet-Ruches and Frederic Eva, opened the cleft on Aiguille Verte in August 2007; from it came clusters, to almost 10 cm, of gemmy, glowing rose-pink fluorite octahedrons to 6 cm on edge individually, as well as beautiful smoky quartz crystal clusters to large-cabinet size, and interesting specimens showing transparent, colorless, lustrous "paper spar" calcite with free-standing crystals to 6.5 cm (Lelievre, 2008).
Alpine pink fluorite
"It has a quartz crystal that resonates at about 5 MHz," he said.
A measurement milestone: Sensors Inc. technology used to measure all regulated diesel exhaust emissions in cross-country test run
When a quartz crystal blank is ground to the proper thickness, the grinding process creates micro-cracks and pits in the surface of the crystal.
A new paradigm in time: Silicon MEMS resonators vs. Quartz crystals: Quartz crystals have dominated accurate frequency generation since the mid-1940s. That is about to change with the fruition of 40 years of research in MEMS resonators
Kyoto, Japan, Oct 10, 2005 - (JCN Newswire) - Kyocera Corporation is pleased to announce that Kyocera Kinseki, a full subsidiary engaged in the development and production of electronic devices, will ship the CX3225SB miniature low-frequency quartz crystal unit, the world's first miniature, and smallest(*1), crystal unit which oscillates in the 4MHz frequency range.
Kyocera to Ship the CX3225SB - World's Smallest 4MHz Frequency Quartz Crystal Unit
DuPont Zodiaq[R] is a material that captures the radiance of quartz crystal with depth, clarity, and strength while embracing nature and technology.
DuPont surfaces: solutions for a healthier life
Today, acoustic sensors are generally based on quartz crystal resonators that are found in electronic devices such as watches, computers, and televisions, with more than 1 billion units mass-produced each year.
Direct quantification of analyte concentration by resonant acoustic profiling
The NX2520DA series is an ultra-micro miniature quartz crystal that exhibits the optimum electrical performance required for miniature wireless applications.
Miniature quartz crystal

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