
	Where results make sense

Topic: Diamond anvil

Related Topics

Cold fusion

Electrolytic cell

Lithium hydroxide

Nuclear magnetic resonance

Cichociemny

Barbershop (movie)

Islam in Uzbekistan

Mountain Region of the Alps

Coolangatta, Queensland

Saint Anselm

Brooks Range

	The Diamond Anvil Cell Explained
		The diamond anvils are skillfully cut from natural, gem quality stones to have 16 pavilion facets, a 70% table, and a working surface (culet).
		The anvils are cut to correct crystallographic orientation [table and culet parallel to the (100) diamond plane] and care is taken to insure parallelism of the table and culet.
		The culet of the diamond anvil is typically 0.6 mm in diameter.
	www.hpdo.com /intro.html (360 words)

	Diamond-Anvil Cell - Crystallography Laboratory at Virginia Tech
		The two anvils are brilliant-cut diamonds, almost the same as found in wedding rings except that small flat surfaces are ground on their tips.
		Diamonds are used as anvils because they are very strong and hard, and therefore do not break or deform under the very high forces involved in a pressure cell.
		The red crystal is the sample, the pale crystal is a quartz crystal used for precise pressure measurement, and the spheres are ruby crystals used for approximate pressure measurement.
	www.crystal.vt.edu /crystal/dac.html (549 words)

	What is a Diamond Anvil Cell?
		The diamond anvil cell is a machine used by physicists to put samples under extremely high pressures (up to ~360 gigapascals) for the purpose of researching their properties, including phase transitions, atomic bonding, viscosity and diffraction levels, and crystallographic structure.
		The diamond anvil, successor to anvils made of carbon-tungsten alloy, was invented by researchers Weir, Lippincott, Van Valkenburg, and Bunting in the late 1950s as part of their work at the National Bureau of Standards (NBS).
		The third component of the diamond anvil is a metallic gasket that encircles the perimeter of the culet, containing the sample and providing resistance to compression on the edges, lessening the possibility of anvil failure.
	www.wisegeek.com /what-is-a-diamond-anvil-cell.htm (367 words)

	Diamond (Site not responding. Last check: 2007-11-01)
		Diamonds have also rarely been found in deposits left behind by glaciers (notably in Wisconsin and Indiana); however, in contrast to alluvial deposits, glacial deposits are not known to be of significant concentration and are therefore not viable commercial sources of diamond.
		Diamonds which are not cut to the specifications of Tolkowsky's round brilliant shape (or subsequent variations) are known as "fancy cuts." Popular fancy cuts include the baguette (from the French, resembling a loaf of bread), marquise, princess (square outline), heart, briolette (a form of the rose cut), and pear cuts.
		Historically diamonds were known to be found only in alluvial deposits in southern India; India led the world in Diamond production from the time of their discovery in approximately the 9th century BC to the mid 18th century AD, but the commercial potential of these sources has been exhausted.
	diamond.iqnaut.net (7169 words)

	Diamond - Wikipedia, the free encyclopedia (Site not responding. Last check: 2007-11-01)
		Diamond is the hardest natural material known, scoring 10 on the relative Mohs scale of mineral hardness and having an absolute hardness value of between 167 and 231 gigapascals in various tests.
		Diamonds can also be brought to the surface through certain processes which may occur when two continental plates collide and deeply formed rock is thrust to the surface, although this phenomenon is less understood and currently assumed to be uncommon.
		Diamonds which are not cut to the specifications of Tolkowsky's round brilliant shape (or subsequent variations) are known as "fancy cuts." Popular fancy cuts include the baguette (from the French, meaning rod or loaf of bread), marquise, princess (square outline), heart, briolette (a form of the rose cut), and pear cuts.
	www.knowledgehunter.info /wiki/Diamond (9286 words)

	Double bevel construction of a diamond anvil - Patent 4776223
		To the extent that the diamonds are characterized or iillustrated (FIG.
		Another object is to provide improved diamond anvil cell apparatus that requires smaller applied force to achieve a given sample pressure and provide improved stability of the diamond anvil cell apparatus for a given sample cell pressure.
		The sample to one studied is placed in the aperture 15 of the sheet, the culet of one diamond is positioned at the bottom of the aperture and the culet of the second diamond is positioned parallel thereto at the upper end of the aperture, with the sample positioned between these two culets.
	www.freepatentsonline.com /4776223.html (2614 words)

	Diamond anvil spectroscope - Patent 6128075
		The second transmissive element is a focusing body of the proper size and shape to focus an image of an infrared source on a sample surface of the sampling element and re-focus the image of reflected light on a spectrometer detector.
		Diamond is the hardest known substance and provides the stage with a highly scratch resistant sampling surface, which is particularly important for a multi-bounce sampling element.
		The sample surface 26 is positioned beneath a micrometer anvil 28 such as may be used to compress a sample (not shown) downward against the sample surface 26 in the case of solid samples.
	www.freepatentsonline.com /6128075.html (5205 words)

	Reference.com/Encyclopedia/Diamond
		Diamond is the hardest known natural material and one of the two best known forms (or allotropes) of carbon, whose hardness and high dispersion of light make it useful for industrial applications and jewelry.
		Historically diamonds were known to be found only in alluvial deposits in southern India; India led the world in diamond production from the time of their discovery in approximately the 9th century BCE to the mid-18th century CE, but the commercial potential of these sources has been exhausted.
		It is important to distinguish that a synthetic diamond is a true diamond created by a technological process, whereas a diamond simulant is defined as a non-diamond material that is used to simulate the appearance of a true diamond.
	www.reference.com /browse/wiki/Diamond (9236 words)

	D'anvils - Diamond Anvils
		'Anvils is dedicated solely to the development and manufacturing of high-pressure devices based on diamond anvils technology intended for studies of materials at high-pressures.
		'Anvils main objective is to provide high-quality anvils and diamond anvil cells at an affordable price with fast delivery to benefit the high-pressure community needs.
		'Anvils is in continuous interaction with the fast-developing high-pressure sciences and keeps close relations with the high-pressure community to invariably improve, upgrade, and introduce new products.
	danvils.com (84 words)

	Almax Industries - Diamond Anvil Cells ( DAC ) the high-precision diamond micro-polishing laboratory .
		This means that these diamonds are white, with a light tint of yellow.
		Of course both types of diamonds are selected for their transparency and purity.
		The tolerances on the less critical dimensions of the diamond anvils are as follows:
	www.almax-industries.com /zr/diamond_anvil_cells.html (387 words)

	Putting the squeeze on materials
		They are using these new designer diamond anvils to study the magnetic susceptibility of lanthanides and actinides--that is, how they respond to strong magnetic fields while being subjected to extreme pressures.
		This type of designer diamond anvil delivers relatively large amounts of electrical current to the sample and heats it, much like a tiny heating pad would, but to temperatures of thousands of degrees.
		He foresees using two designer diamond anvils in combination for the first time to conduct the plutonium heating experiments: one to heat the sample and another to measure its magnetic susceptibility.
	www.eurekalert.org /features/doe/2004-12/ddoe-pts122204.php (3218 words)

	Diamonds \| American Museum of Natural History
		Research on planetary interiors and dense matter has been advanced greatly by the use of diamond anvil cells, using lasers, optics, and x-rays to probe these small samples to reveal their mysteries.
		The diagram above illustrates the principle of the diamond anvil cell, and opposite it is a photomicrograph of an actual diamond anvil.
		An early diamond anvil cell for optical studies used the lever-arm diamond anvil cell, as diagrammed here: by the application of leverage a turn of a screw could create many thousands of atmospheres of pressure.
	www.amnh.org /exhibitions/diamonds/research.html (354 words)

	Laser Heating in Diamond Anvil Cell (DAC) (Site not responding. Last check: 2007-11-01)
		The laser-heated diamond anvil cell (DAC) proposed by Bassett and Ming [1] is one of the most fundamental tools in the arsenal of high-pressure mineral physics research as it is the only device that can access the entire range of pressures and temperatures encountered in terrestrial planetary interiors.
		Three decades after the first application of laser energy to heat a sample in a diamond anvil cell, laser heating of the diamond cell has evolved into an advanced technique in the high-pressure and high-temperature research fields.
		Recently, the new diamond-like BC1.6 phase was obtained from the graphite-like BC1.6 phase in a laser heated diamond anvil cell at high temperature, 2230 K, and high pressure, 45 GPa.
	www.soest.hawaii.edu /~zinin/Zi-Laser.html (371 words)

	Deformation of the Diamond Anvil Cell from Finite Element Modeling (Site not responding. Last check: 2007-11-01)
		The Diamond Anvil Cell is used in ultra high pressures experiments.
		Although often considered as a rigid body, diamond was found to undergo very large elastic deformations near the sample region.
		Diamond Anvil Cell at 280 GPa, with the FEM grid
	merkel.zoneo.net /FEM/index.php?lang=en (222 words)

	Diamond Anvil Cell -- from Eric Weisstein's World of Chemistry
		A diamond anvil cell works by placing carved diamonds on the tips of piston cylinders so that the force of compression is concentrated over a very small area, and pressures of up to 2 Mbar of pressure may be achieved (the pressure at the center of the Earth is 1.3 Mbar!).
		At this pressure, however, the diamonds frequently shatter, so much lower pressures are routine.
		The pressure is measured by observing the fluorescence properties with a ruby laser.
	scienceworld.wolfram.com /chemistry/DiamondAnvilCell.html (88 words)

	Diamond Anvil (Site not responding. Last check: 2007-11-01)
		If a thin gasket or washer of metal is ferociously squashed between the faces of two diamond, it starts to flow.
		If the hole is filled with a soft material, this leads to very high and effectively hydrostatic pressures at the centre of the hole.
		Since diamonds are transparent to light and to X-rays, the material can then be studied at very high pressures (GPa) either under the optical microscope or by X-ray crystallography.
	www.personal.rdg.ac.uk /~spsolley/dianvil.html (74 words)

	Diamond anvil cells for infrared microscopes and spectrophotometers (Site not responding. Last check: 2007-11-01)
		Although the design varies in each instrument, all are composed of metallic bodies and each has a pair of opposed diamond anvils.
		One advantage of the diamond anvil cell is the ease of use.
		These diamond anvil cells are utilized worldwide in a broad range of scientific applications in private, industrial, forensic, and university research labs.
	www.labinternet.com /s009_008.htm (173 words)

	Diamond Anvil Cell map of canada Diamond Anvil Cell (Site not responding. Last check: 2007-11-01)
		Diamond Anvil Cell map of canada Diamond Anvil Cell
		Find diamond anvil cell and more at Lycos Search.
		The resultant high pressures – of as much as a million atmospheres – are produced when force is applied to small areas of the opposing diamond faces.
	www.find-ask.com /D/Encyclopedia/Diamond_Anvil_Cell/Diamond_Anvil_Cell.html (341 words)

	E270: A Diamond Anvil Cell Facility At The Advanced Photon Source (Site not responding. Last check: 2007-11-01)
		Ultrahigh pressures and temperatures in the diamond anvil cell are achieved at the expense of reducing sample volume.
		The diamond anvil cell (DAC) program is an important part of high pressure experimental programs at GSECARS.
		To accommodate the restricted scattering geometry imposed by diamond anvil cells, this diffractometer has two additional degrees of freedom compared to a classic Kappa diffractometer.
	www.hwi.buffalo.edu /ACA/ACA97/abstracts/text/E270.html (266 words)

	D'anvils - Diamond Anvil Cells
		Diamond anvil cells produced by D'ANVILS are made of Vascomax 350 (specifications.pdf) Copper-Beryllium (specifications.html) suitable for operation with magnets, and Inconel 718 (specifications.pdf) suitable for high temperatures applications (900 °C).
		Diameter: 22.5 mm, length:~ 20 mm (depends on anvils heights).
		For a simple introduction of Diamond Anvil Cells please download Introduction to DAC's.pdf
	www.danvils.com /dac.html (411 words)

	Low-Pressure Diamond Anvil Cell - Thermo Electron Corporation
		This Diamond Anvil Cell uses two Type IIA faceted diamonds with a 0.6 mm free working area.
		Analysis of samples requires the use of a beam condenser or microscope.
		The Low-Pressure Diamond Anvil Cell is useful for a variety of routine samples.
	www.thermo.com /com/cda/product/detail/1,1055,17701,00.html (155 words)

	High Pressure Experimental Facilities
		Although the available sample space in a DAC is small (typically a 300-700 um diameter cylinder, 60-120 um thick), two to six electrical leads can be attached to single crystal platelets only 100 um on an edge and as thick as 40 um.
		Type II diamond anvils will be available for infrared studies.
		Photo Caption: Diamond anvil cells are available for optical and transport measurements in both pulsed and DC fields.
	hannahsmac.magnet.fsu.edu /F_S/high_pressure.html (360 words)

	The Hydrothermal Diamond
		It should be emphasized that the main application of the HDAC is for the study of geologic processes in the crust in the presence of water or other fluids, and, as contrast to the traditional diamond anvil cell, it is not for the studies of Earth mantle or core (Hemley and Ashcroft, 1998).
		In both modified cells, the loss of intensity of X-ray due to scattering and absorption by the diamonds was minimized by removing as much solid material as possible along the path of the X-ray beam.
		O using the hydrothermal diamond anvil cell: Insights into the formation of gem pockets in miarolitic pegmatites.
	www.geochina.org /2meet/WCCOGS-Chou-f2.htm (1683 words)

	what is a diamond anvil cell.htm
		The diamond anvil cell is a machine used by physicists to put samples under extremely high pressures (up to...
		Most diamond experts acknowledge that there are four main factors to consider when buying a diamond ring.
		There are two blade designs, bypass and anvil, suited to cutting different types of material.
	www.wisegeek.com /s/what-is-a-diamond-anvil-cell.htm (491 words)

	[No title] (Site not responding. Last check: 2007-11-01)
		A general DAC contains two specially cut diamonds which can be pressed upon each other so as to apply a large pressure (thousands to millions of times the normal air pressure) on the medium between the two.
		This means that the X-rays have to be able to pass through the diamonds and the sample at the widest possible angle-range.
		And so the diamonds are mounted in Beryllium metal.
	www.rug.nl /msc/research/groups/vasch/research/diamondAnvilCell (240 words)

	New material breakthrough: Super-hard graphite cracks diamond
		It is hard to imagine that graphite, the soft "lead" of pencils, can be transformed into a form that competes in strength with its molecular cousin diamond.
		Using a diamond anvil to produce extreme pressures and the ultra-brilliant X-ray beams at the Advanced Photon Source in Illinois, scientists with the High-Pressure Collaborative Access Team (HPCAT)* have surmounted experimental obstacles to probe the changes that graphite undergoes to produce this unique, super-hard substance.
		The atoms in diamond, on the other hand, are tightly linked producing a strongly bonded structure.
	www.eurekalert.org /pub_releases/2003-10/ci-nmb101503.php (493 words)

	Hydrothermal Diamond Anvil Cell (Site not responding. Last check: 2007-11-01)
		Hydrothermal diamond anvil cell for XAFS studies of first-row transition elements in aqueous solution up to supercritical conditions
		University, Springfield, MO 65804, U.S.A. I-Ming Chou: MS 955, U.S. Geological Survey, Reston, VA 20192, U.S.A. A hydrothermal diamond anvil cell (HDAC) has been modified by drilling holes with a laser to within 150 µm of the anvil face to minimize the loss of X-rays due to absorption and scatter by diamond.
		These pressure-temperature conditions are more than sufficient for carrying out experimental measurements that can provide data valuable in the interpretation of fluid inclusions in minerals found in ore-forming hydrothermal systems as well as other important lithospheric processes involving water.
	mplmac.geo.cornell.edu /XAFS-HDAC.htm (180 words)

	Absolute temperature measurement in a laser-heated diamond anvil cell
		The laser-heated diamond anvil cell has been widely used to study mineral physics under high pressure and temperature, and these studies have provided valuable information in understanding planetary interiors; however, use of the spectroradiometric method in the studies has raised concerns about the accuracy of obtained temperature values.
		Energy spectra of iron were measured up to 58 GPa and 1700 K. The detailed balance principle applied to the inelastic x-ray scattering spectra provides absolute temperatures of the laser-heated sample.
		These temperatures are in very good agreement with values determined from the thermal radiation spectra fitted to the Planck radiation function up to 1700 K. Our data provide, for the first time, independent confirmation of the validity of temperatures determined from spectroradiometric method in the laser-heated diamond cell experiments.
	www.agu.org /pubs/crossref/2004/2004GL020599.shtml (320 words)

Try your search on: Qwika (all wikis)