Thin film of the hard material lets batteries benefit from the metal’s electrochemical advantages while blocking unwanted reactions

Despite the Gujarat government’s order to pay salaries to workers during lockdown period, lakhs of diamond artisans in Surat have not been paid their wages by their employers, said Diamond Workers Union – Gujarat.

This paper examines how three multilateral environmental agreements (MEAs) incorporate transparency into their regulatory regimes: CITES (endangered species, especially tropical timber), the Basel Convention (hazardous e-waste), and the Kimberley Process (conflict diamonds)

A large group of Australians quarantined on a coronavirus-hit cruise ship in Japan for two weeks are now on their way home on a special Qantas flight, but 10 have been left behind.

Mineral inclusions in natural diamond are widely studied for the insight that they provide into the geochemistry and dynamics of the Earth's interior. A major challenge in achieving thorough yet high rates of analysis of mineral inclusions in diamond derives from the micrometre-scale of most inclusions, often requiring synchrotron radiation sources for diffraction. Centering microinclusions for diffraction with a highly focused synchrotron beam cannot be achieved optically because of the very high index of refraction of diamond. A fast, high-throughput method for identification of micromineral inclusions in diamond has been developed at the GeoSoilEnviro Center for Advanced Radiation Sources (GSECARS), Advanced Photon Source, Argonne National Laboratory, USA. Diamonds and their inclusions are imaged using synchrotron 3D computed X-ray microtomography on beamline 13-BM-D of GSECARS. The location of every inclusion is then pinpointed onto the coordinate system of the six-circle goniometer of the single-crystal diffractometer on beamline 13-BM-C. Because the bending magnet branch 13-BM is divided and delivered into 13-BM-C and 13-BM-D stations simultaneously, numerous diamonds can be examined during coordinated runs. The fast, high-throughput capability of the methodology is demonstrated by collecting 3D diffraction data on 53 diamond inclusions from Juína, Brazil, within a total of about 72 h of beam time.

Collecting back-scattered X-rays from vacuum windows using a pinhole X-ray camera provides an efficient and reliable method of measuring the beam shape and position of the white synchrotron beam. In this paper, measurements are presented that were conducted at ESRF beamline ID6 which uses an in-vacuum cryogenically cooled permanent-magnet undulator (CPMU18) and a traditional U32 undulator as its radiation sources, allowing tests to be performed at very high power density levels that were adjusted by changing the gap of the undulators. These measurements show that it is possible to record beam shape and beam position using a simple geometry without having to place any further items in the beam path. With this simple test setup it was possible to record the beam position with a root-mean-square noise figure of 150 nm.

A new diamond-anvil cell apparatus for in situ synchrotron X-ray diffraction measurements of liquids and glasses, at pressures from ambient to 5 GPa and temperatures from ambient to 1300 K, is reported. This portable setup enables in situ monitoring of the melting of complex compounds and the determination of the structure and properties of melts under moderately high pressure and high temperature conditions relevant to industrial processes and magmatic processes in the Earth's crust and shallow mantle. The device was constructed according to a modified Bassett-type hydro­thermal diamond-anvil cell design with a large angular opening (θ = 95°). This paper reports the successful application of this device to record in situ synchrotron X-ray diffraction of liquid Ga and synthetic PbSiO3 glass to 1100 K and 3 GPa.

For Heusler-type Ni–Mn–Ga ferromagnetic shape-memory alloys, the configuration of the martensite variants is a decisive factor in achieving a large magnetic shape-memory effect through field-induced variant reorientation. Based upon the spatially resolved electron backscatter diffraction technique, the microstructural evolution associated with the martensitic transformation from austenite to seven-layered modulated (7M) martensite was investigated on a polycrystalline Ni53Mn22Ga25 alloy. It was clearly shown that grain interior nucleation led to the formation of diamond-shaped 7M martensite within the parent austenite matrix. This diamond microstructure underwent further growth through an isotropic expansion with the coordinated outward movement of four side habit planes, followed by an anisotropic elongation with the forward extension of a type-I twin pair. A two-step growth model is proposed to describe the specific morphology and crystallography of 7M martensite. In addition, the habit planes were revealed to possess a stepped structure, with the {1 0 1}A plane as the terrace and the {0 1 0}A plane as the step. The characteristic combination of martensite variants and the underlying mechanism of self-accommodation in the martensitic transformation have been analysed in terms of the minimum total transformation strain, where the deformation gradient matrix was constructed according to the experimentally determined orientation relationship between the two phases. The present results may deepen the understanding of special martensite microstructures during the martensitic transformation in ferromagnetic shape-memory alloys.

Enhancement of X-ray excited optical luminescence in a 100 µm-thick diamond plate by introduction of defect states via electron beam irradiation and subsequent high-temperature annealing is demonstrated. The resulting X-ray transmission-mode scintillator features a linear response to incident photon flux in the range 7.6 × 108 to 1.26 × 1012 photons s−1 mm−2 for hard X-rays (15.9 keV) using exposure times from 0.01 to 5 s. These characteristics enable a real-time transmission-mode imaging of X-ray photon flux density without disruption of X-ray instrument operation.

The first experimental results from a new transmissive diagnostic instrument for synchrotron X-ray beamlines are presented. The instrument utilizes a single-crystal chemical-vapour-deposition diamond plate as the detector material, with graphitic wires embedded within the bulk diamond acting as electrodes. The resulting instrument is an all-carbon transmissive X-ray imaging detector. Within the instrument's transmissive aperture there is no surface metallization that could absorb X-rays, and no surface structures that could be damaged by exposure to synchrotron X-ray beams. The graphitic electrodes are fabricated in situ within the bulk diamond using a laser-writing technique. Two separate arrays of parallel graphitic wires are fabricated, running parallel to the diamond surface and perpendicular to each other, at two different depths within the diamond. One array of wires has a modulated bias voltage applied; the perpendicular array is a series of readout electrodes. X-rays passing through the detector generate charge carriers within the bulk diamond through photoionization, and these charge carriers travel to the nearest readout electrode under the influence of the modulated electrical bias. Each of the crossing points between perpendicular wires acts as an individual pixel. The simultaneous read-out of all pixels is achieved using a lock-in technique. The parallel wires within each array are separated by 50 µm, determining the pixel pitch. Readout is obtained at 100 Hz, and the resolution of the X-ray beam position measurement is 600 nm for a 180 µm size beam.

It is shown that it is possible to perform combined X-ray and neutron single-crystal studies in the same diamond anvil cell (DAC). A modified Merrill–Bassett DAC equipped with an inflatable membrane filled with He gas has been developed. It can be used on laboratory X-ray and synchrotron diffractometers as well as on neutron instruments. The data processing procedures and a joint structural refinement of the high-pressure synchrotron and neutron single-crystal data are presented and discussed for the first time.

The Hope Diamond’s red glow has long been considered a unique property of that stone. Most blue diamonds produce a bluish-white phosphorescence if exposed to ultraviolet light. The few other diamonds known to emit red phosphorescence were commonly assumed to have been from the even larger original stone from which the Hope was cut.

The post Bombarded with ultraviolet light, the blue Hope diamond glows red appeared first on Smithsonian Insider.

The Cullinan Blue Diamond Necklace, featuring a bow motif with nine sparkling and extremely rare blue diamonds, recently joined the National Gem Collection in the […]

The post Cullinan Blue Diamond Necklace appeared first on Smithsonian Insider.

More than 500 carats of rough diamonds were recently donated to the Department of Mineral Sciences of the Smithsonian’s Natural History Museum by Jewlers Mutual Insurance Co. of Neenah, Wis.

The post 500 carats of rough diamonds donated to Natural History Museum appeared first on Smithsonian Insider.

Could the universe’s earliest stars have formed planets, and if so, what might they have looked like? That was the question Harvard-Smithsonian Center for Astrophysics […]

The post Diamonds are a planet’s best friend? In the early universe, perhaps appeared first on Smithsonian Insider.

Several weeks before it went on display in mid-November at the Smithsonian’s National Museum of Natural History, minerals curator Jeff Post stood in the museum’s […]

The post Colossal diamond’s eerie glow earns it a fiery name appeared first on Smithsonian Insider.

Patt Morrison's outfit for May 20. ; Credit: Michelle Lanz/KPCC

Here’s another version of those capris – these are a lace print from H&M – and while I’ve seen women wearing them with high heels, it just doesn’t seem right somehow. It so sullies the legacies of Mary Tyler Moore and Audrey Hepburn to pair them with anything but flats!

This is my version of a cutaway coat. In a coat like this I could attend Royal Ascot, or invent the telegraph. Obviously it’s a girl version, but I feel empowered, even … princely. At least Fred Astaire-ish. Maybe a pair of spats would make me feel more so. And I could waltz facing forward, not dancing backward, a la Ginger.

As for the adornments, I am not a hearts-and-butterflies kind of girl, but I do like to wear themed brooches in clusters or multiples, and this pair of hearts – just like a poker hand – seemed to work. One is the arrow-pierced one [not to be confused with the Pierce-Arrow, one of the handsomest motorcars ever made].

And the other, the enormous bogus diamond heart, I got from Butler & Wilson, the imaginative London costume jewelry [or better yet ‘jewellery’] designer. It’s my homage to a recent auction of what may be the largest perfect diamond in the world, 101.73 carats.

Harry Winston, the legendary jeweler, bought it for nearly $24 million and has chosen to call it, I am sorry to say, the “Harry Legacy,” which is not the kind of name a diamond like this deserves, one redolent of romance and myth, like “the Hope Diamond” or “the Koh-I-Noor Diamond.”

If you have any suggestions about what to name this magnificent perfect diamond, I’d love to hear them.

My own faux diamond’s name, I have decided, is “The Rhinestone Corazon.” How do you like it?

This content is from Southern California Public Radio. View the original story at SCPR.org.

The companies are considering a new contract for 2021.

They might sound a little pricey, but these might be the longest lasting batteries ever created.

But for now only the penguins can enjoy them. (Turns out, mining is illegal in Antarctica.)

Physicists have gotten a first look at the way electrons spin in a tiny diamond wire, and it could mean big things for computer technology.

Massive gem, the second-largest ever found, measures a whopping 1,111 carats.

A company that turns cremated remains into diamonds has made headlines turning loved ones and celebrities into jewelry. Next up? Fido.

Nope, Superman can't crush a piece of coal into a diamond. And neither can ordinary humans. We bust the common myth.

Choosing the perfect diamond jewelry for your loved ones is often very difficult. Five easy steps will help you find what you are looking for.

On Saturday, June 25, starting at 11 AM, Morton Auctioneers will host the LAST auction for summer 2016 of their wide variety of fine art and collectibles.

The independent authority on Search vendors, topseos.com, has announced DiamondLinks.net as the second top rated reputation management firm for the month of February 2020.

Federation Internationale de Football Association (FIFA) has been awarded the prestigious Five Star Diamond Award during the 20th FIFA World Cup taking place in Brazil.

Dallas based Public Relations Firm who specializes in the Entertainment Industry launches Radio Promotion and Production Services

Glitzkoin launched the Diamond Price Estimator (DPE) to accurately measure the price of a 1 Carat Diamond.

Loveonly, Inc. unlocks the true asset potential of diamonds for all investors while re-establishing safety and trust through innovative transparent technology.

Diamond Trading Platform, Supports B2B And B2C Trade In Diamonds

New ecommerce site brings pre-owned diamonds, designer jewelry and luxury watches to consumers worldwide at unprecedented value.

ByEnzo Platinum Jewelry for Men

Military Spouse Advocacy Network (MSAN) is proud to announce that the Freedom Learning Group™ (FLG) has become a Diamond partner of MSAN.

Partnering with companies involved in all phases of S1000D integration and implementation gives JANA a unique perspective on the industry, and the company is proud to support this event.

BodyLase® has reached the pinnacle level of being in the top 2% of Allergan practices in the country.

The Blac Chyna collection is available online beginning Monday November 19, 2018 www.whitenicious.com/collections/blac-chyna.

Baladna Food Industries (BFI), Qatar's largest producer of fresh dairy & beverages, & a subsidiary of Baladna, will be the Diamond Sponsor of the upcoming 'Made in Qatar 2020' exhibition slated from February 19 to 22 at the Kuwait International Fair.

Baladna's stand received many exhibitors and visitors, who expressed their delight with the products the company exhibited, including milk, cheese, laban, labneh, and juices.

After last year's popular Nashville Diamond Week, King Jewelers has opted to dedicate the entire month of April to diamonds and diamond jewelry. Nashville clients can benefit from discounts, gift card offers and a chance to win a special gift package

WARNER RECORDS rockers DEFTONES are hosting a listening party in honor of the 10th anniversary of their sixth studio album "Diamond Eyes" on the DEFTONES' YOUTUBE channel … more

A component for a laser tool, the component comprising: a tubular body defining an internal channel and an aperture; and a window disposed across the aperture and bonded to the tubular body around the aperture, wherein the window is diamond, and wherein the tubular body comprises a material having a coefficient of linear thermal expansion α of 14×10−6 K−1 or less at 20° C. and a thermal conductivity of 60 Wm−1K−1 or more at 20° C.

The present invention relates to an HPHT method for synthesizing single crystal diamond, wherein a single crystal diamond seed having an aspect ratio of at least 1.5 is utilized. Single crystal diamond seeds having an aspect ratio of at least 1.5 and synthetic single crystal diamond which may be obtained by the method recited are also described. The growth surface is substantially aligned along a or direction in the plane of the growth surface.

Embodiments presented herein relate generally to the formation of diamond-like carbon, forms of diamond-like carbon and/or carbon dioxide fixation.

Diamond bonded constructions comprise a diamond body attached to a substrate, wherein the body includes a first diamond bonded volume, and a second diamond bonded volume attached thereto. The second volume may be provided in the form of a powder or a presintered mass prior to attachment, and the first volume may be provided in the form of presintered pieces when combined with the second volume. The first volume diamond volume content is greater than about 94 percent, and is the same or greater than that of the second volume. The first volume is sintered during a first HPHT process, and the second volume is sintered and/or attached to the first volume during a second HPHT process. The first HPHT pressure is greater than the second HPHT pressure. The substrate is not an infiltration substrate used to form the first diamond volume. The diamond body may be thermally stable.

Embodiments of the invention relate to polycrystalline diamond compacts (“PDCs”) comprising a polycrystalline diamond (“PCD”) table including at least a portion having aluminum carbide disposed interstitially between bonded-together diamond grains thereof, and methods of fabricating such PDCs. In an embodiment, a PDC includes a substrate, and a PCD table bonded to the substrate. The PCD table includes a plurality of bonded-together diamond grains defining a plurality of interstitial regions. The PCD table further includes aluminum carbide disposed in at least a portion of the plurality of interstitial regions.

Method for identifying CVD diamond comprises (1) placing a clean diamond on a fixed platform; (2) illuminating the diamond with light having various wavelengths; (3) receiving reflected light from the diamond; (4) calculating a reflectance value at each wavelength based on a light intensity at each wavelength of the reflected light, generating a spectral reflectance curve; (5) determining whether the spectral reflectance curve has a sharp trough, then storing the diamond if the spectral reflectance curve thereof does not have the sharp trough, while selecting the diamond for a further identification if the spectral reflectance curve thereof has the sharp trough; and (6) determining whether the sharp trough of the diamond selected from the step (5) is at a wavelength between 227 nm and 233 nm, and identifying the diamond to be the CVD diamond if the sharp trough is at the wavelength between 227 nm and 233 nm.

The present invention refers to a seal ring for a mechanical seal, comprising: a base body (2) with a diamond layer (3) which is applied to the base body (2) and configured as a sliding surface, wherein the diamond layer (3) has a thickness (D) which is less than or equal to 4 μm, particularly less than or equal to 3 μm, particularly less than or equal to 2 μm, particularly preferably about 1 μm, and wherein the base body (2) is without fissures or only comprises fissures that have a maximum longitudinal extension (L) on a surface of the base body (2) or in the base body (2) that is less than or equal to 5 μm.

A dressing blade for finishing and reconditioning new and used abrasive grinding and cutting tools has a slab-shaped shank with an extension protruding longitudinally from the shank. Superabrasive grains are disposed on the surface of the extension and held in place by a brazed metal composition. This composition is formed by brazing a powdered mixture of brazing metal components and active metal components. Specific extension configurations are provided which allow aligning the superabrasive grains in single layer arrangement for precise dressing and simple fabrication of the tool. The novel dressing tool exhibits excellent wear characteristics.