The present invention describes a microfabricated or nanofabricated structured diamond abrasive with a high surface density array of geometrical protrusions of pyramidal, truncated pyramidal or other shape, of designed shapes, sizes and placements, which provides for improved conditioning of CMP polishing pads, or other abrasive roles. Three methods of fabricating the structured diamond abrasive are described: molding of diamond into an array of grooves of various shapes and sizes etched into Si or another substrate material, with subsequent transferal onto another substrate and removal of the Si; etching of an array of geometrical protrusions into a thick diamond layer, and depositing a thick diamond layer over a substrate pre-patterned (or pre-structured) with an array of geometrical protrusions of designed sizes, shapes and placements on the surface.

In an embodiment, a polycrystalline diamond compact includes a substrate and a preformed polycrystalline diamond table having an upper surface, an interfacial surface, and at least one side surface extending therebetween. The interfacial surface of the polycrystalline diamond table is bonded to the substrate. The polycrystalline diamond table includes bonded diamond grains defining interstitial regions. The polycrystalline diamond table includes a first region extending inwardly from at least a portion of the upper surface and at least a portion of the at least one side surface. The first region spaced from the interfacial surface. The polycrystalline diamond table includes at least a second region extending inwardly from the interfacial surface to the upper surface. The first region includes at least a first infiltrant disposed interstitially between the bonded diamond grains thereof. The second region includes at least a second infiltrant disposed interstitially between the bonded diamond grains thereof.

A polycrystalline diamond (PCD) with diamond grains includes a first zone of the diamond grains and a second zone of the diamond grains. The first zone forms a working surface and a first catalyzing material is disposed within voids of the diamond grains in the first zone. A second catalyzing material is bonded to the diamond grains disposed in the second zone. The first catalyzing material in the first zone is connected to the diamond grains disposed in the first zone less intimately than the second catalyzing material is bonded to the diamond grains in the second zone.

Embodiments of the invention relate to polycrystalline diamond (“PCD”) fabricated by sintering a mixture including diamond particles and a selected amount of graphite particles, polycrystalline diamond compacts (“PDCs”) having a PCD table comprising such PCD, and methods of fabricating such PCD and PDCs. In an embodiment, a method includes providing a mixture including graphite particles present in an amount of about 0.1 weight percent (“wt %”) to about 20 wt % and diamond particles. The method further includes subjecting the mixture to a high-pressure/high-temperature process sufficient to form PCD.

A layer of matrix powder is deposited within a mold opening. A layer of super-abrasive particles is then deposited over the matrix powder layer. The super-abrasive particles have a non-random distribution, such as being positioned at locations set by a regular and repeating distribution pattern. A layer of matrix powder is then deposited over the super-abrasive particles. The particle and matrix powder layer deposition process steps are repeated to produce a cell having alternating layers of matrix powder and non-randomly distributed super-abrasive particles. The cell is then fused, for example using an infiltration, hot isostatic pressing or sintering process, to produce an impregnated structure. A working surface of the impregnated structure that is oriented non-parallel (and, in particular, perpendicular) to the super-abrasive particle layers is used as an abrading surface for a tool.

Embodiments of the invention relate to methods of fabricating a polycrystalline diamond compacts and applications for such polycrystalline diamond compacts. In an embodiment, a method of fabricating a polycrystalline diamond body includes mechanically milling non-diamond carbon and a sintering aid material for a time and aggressiveness sufficient to form a plurality of carbon-saturated sintering aid particles and sintering a plurality of diamond particles in the presence of the plurality of carbon-saturated sintering aid particles to form the polycrystalline diamond body.

Embodiments of the invention relate to polycrystalline diamond compacts (“PDCs”) comprising a polycrystalline diamond (“PCD”) table including a thermally-stable region having at least one low-carbon-solubility material disposed interstitially between bonded 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 diamond grains exhibiting diamond-to-diamond bonding therebetween and defining a plurality of interstitial regions. The PCD table further includes at least one low-carbon-solubility material disposed in at least a portion of the plurality of interstitial regions. The at least one low-carbon-solubility material exhibits a melting temperature of about 1300° C. or less and a bulk modulus at 20° C. of less than about 150 GPa.

Embodiments of the invention relate to polycrystalline diamond compacts (“PDCs”) and methods of fabricating such PDCs. In an embodiment, a PDC includes a substrate and a preformed polycrystalline diamond table including an interfacial surface bonded to the substrate and an opposing working surface. The preformed polycrystalline diamond table includes a proximal region extending from the interfacial surface to an intermediate location within the preformed polycrystalline diamond table that includes a metallic infiltrant infiltrated from the substrate, and a distal region extending from the working surface to the intermediate location that is substantially free of the metallic infiltrant. A boundary exists between the proximal and distal regions that has a nonplanar irregular profile characteristic of the metallic infiltrant having been infiltrated into the preformed polycrystalline diamond table.

Methods for preparing a silicon bonded PCD material involving a one step, double sweep process and drilling cutters made by such processes are disclosed. The PCD material includes thermally stable phases in the interstitial spaces between the sintered diamond grains. The method sweeps a diamond powder with a binder to form sintered PCD, reacts said molten binder with a temporary barrier separating said binder and said diamond from a silicon (Si) source, and sweeps said sintered PCD with said Si source to form SiC bonded PCD.

A magnetically enhanced low temperature high density plasma chemical vapor deposition (LT-HDP-CVD) source has a hollow cathode target and an anode, which form a gap. A cathode target magnet assembly forms magnetic field lines substantially perpendicular to the cathode surface. A gap magnet assembly forms a magnetic field in the gap that is coupled with the cathode target magnetic field. The magnetic field lines cross the pole piece electrode positioned in the gap. The pole piece is isolated from ground and can be connected to a voltage power supply. The pole piece can have negative, positive, floating, or RF electrical potentials. By controlling the duration, value, and sign of the electric potential on the pole piece, plasma ionization can be controlled. Feed gas flows through the gap between the hollow cathode and anode. The cathode can be connected to a pulse power or RF power supply, or cathode can be connected to both power supplies. The cathode target and substrate can be inductively grounded.

A magnetically enhanced HDP-CVD plasma source includes a hollow cathode target and an anode. The anode and cathode form a gap. A cathode target magnet assembly forms magnetic field lines that are substantially perpendicular to a cathode target surface. The gap magnet assembly forms a cusp magnetic field in the gap that is coupled with the cathode target magnetic field. The magnetic field lines cross a pole piece electrode positioned in the gap. This pole piece is isolated from ground and can be connected with a voltage power supply. The pole piece can have a negative, positive, or floating electric potential. The plasma source can be configured to generate volume discharge. The gap size prohibits generation of plasma discharge in the gap. By controlling the duration, value and a sign of the electric potential on the pole piece, the plasma ionization can be controlled. The magnetically enhanced HDP-CVD source can also be used for chemically enhanced ionized physical vapor deposition (CE-IPVD). Gas flows through the gap between hollow cathode and anode. The cathode target is inductively grounded, and the substrate is periodically inductively grounded.

News you don't want to miss for April 13:

1. "If the country’s most popular coronavirus model proves accurate, California will reach the peak of its outbreak this Wednesday," the San Francisco Chronicle reports, when it will reach a predicted 66 deaths.…

News you don't want to miss for April 20:

1. Fifty-one employees at Safeway's distribution warehouse in Tracy have been infected with covid-19, including one death, the San Francisco Chronicle reports.…

News you don't want to miss for April 27:

1. Alameda County, along with five other Bay Area counties, announced the shelter in place order will be extended through the end of May, the San Francisco Chronicle reports.…

News you don't want to miss for April 28:

1. The upcoming school year could open early, maybe in July, Gov. Gavin Newsom said on Tuesday, the East Bay Times reports.…

News you don't want to miss for May 4:

1. Businesses such as bookstores, florists, clothing retailers, among others, can begin to reopen on Friday, Gov. Gavin Newsom announced, according to the Associated Press.…

HARRY Foyle stole the show with two best-yet individual performances as St Cross Symondians thrashed hapless New Milton by 162 runs to move fourth in the ECB Southern Premier Division.

ECHO fishing correspondent Mark Simmonds landed his fifth Amazon Red Tail over 100 lb when taking Black Spot at 110 lb from Teak Trees, Chang Mai in Thailand.

PLANS for a new £15m ferry terminal in Southampton's flagship Royal Pier development are set to go on display.

The Carolina Times faces an uncertain future after its publisher Kenneth Edmonds died Saturday, May 2. His tenure at the historic black newspaper started when he was just 4 or 5 years old.

We've got a special "Ten O'Clock Doc" set for you this time, with two of Doc's visits to WNCW back in the 1990's: Doc with Wayne Henderson and Charles Welch from March of 1996, and with Jack Lawrence from March of 1997.

We go back in time to two years ago to the day -- May 11th, 2018 -- for this smokin' hot session from Samantha Fish and her band, not long after we'd discovered her music.

Thousands of people cheered Queen Elizabeth II during a trip to Stamford and Burghley House earlier this month

India, the world’s largest diamond polishing hub that employs over one million people, is likely to see a staggering 50% job loss. Diamond merchants are struggling to manage their inventories or pay salaries to their craftsmen. Knock-on effects are being felt by one million more workers employed in the gems and jewellery industry.

What day is it today? The woman on the other end of the phone asked, “How’s your day going?” “Oh, about the same as yesterday...” “Good one,” she says. At least I could inject a bit of humor. I don’t know about you, but for those of us quarantined at home, it seems as though every day is Sunday: one yawning day without very many milestones. I consider receiving the mail a major event. The governor’s daily address at 2:30 ish in the afternoon is another. At the beginning of this stay at home order I told myself that I would use noon as a cutoff: I had to be out of my pajamas by noon. Do I dare tell you that it is past 4:00 and I’m still in my nightgown? Let’s just say I’m getting in touch with my inner sloth. This order also breeds laziness. At one point I was counting out the number of underwear I had until I had to do laundry. What is wrong with me? I used to be a productive member of society: I read the newspaper daily. Now I collect the newspaper from the driveway every two days, I

Assuming the pandemic starts subsiding by June and trade channels normalise over the next quarter, CRISIL expects a revival in demand to be pushed into the second half of the fiscal.

India’s gross import of rough diamonds had declined by 13.43% to $12.39 billion between April 2019 and February 2020 from a year earlier.

Diamond trade at Surat has come to a halt because of the lockdown. Many workers have also left.

India, the world’s largest diamond polishing hub that employs over one million people, is likely to see a staggering 50% job loss. Diamond merchants are struggling to manage their inventories or pay salaries to their craftsmen. Knock-on effects are being felt by one million more workers employed in the gems and jewellery industry.

On today's show, we provide the latest highlights from the governor's daily coronavirus response briefing. Plus, we speak with representatives from Communities Unlimited about a new toolkit the nonprofit has put together to help people and small businesses navigate the relief options provided through the federal CARES Act. And, we find out how you can still get your Girl Scout Cookie fix.

On today's show, we have the latest from the governor's daily coronavirus response briefing. Plus, we hear from a pulmonologist who is treating COVID-19 patients at Mercy Hospital about what he's been experiencing on the ground. And, we launch a series of conversations with local seniors called Senior Portraits where we discuss what it's been like to finish high school during a pandemic.

On today's show, we have the latest from Governor Asa Hutchinson's daily coronavirus briefing, which aired at noon today overlapping a portion of the noon edition of Ozarks at Large . Plus, we speak with protestors and Tyson Foods representatives as the company closes several plants in other parts of the country because of coronavirus outbreaks in the facilities. And, we find out what local gym operators are doing to keep customers engaged as they wait for the governor to provide guidelines for reopening their businesses.

On today's show, we have the latest from Governor Asa Hutchinson's daily coronavirus response briefing. Plus, we continue our series of conversations with instructors for a University of Arkansas Honors forum taking place later this month called Pandemic. And, we find out about how unemployed and dislocated Arkansans can access free workforce training classes.

A GLASWEGIAN who once reached the final of hit TV show Stars in their Eyes has been delighting lockdown audiences by putting on live tribute performances of two country music icons.

Terri Windling (03/2020), "Once upon a time in Paris...": "As the vogue for fairy stories evolved in the 1670s and '80s, Madame d'Aulnoy emerged as one of the most popular raconteurs in Paris ... she soon formed a glittering group around her of nonconformist women and men, as well as establishing a highly successful and profitable literary career ... So how, we might ask, did Perrault become known as the only French fairy tale author of note?" Elizabeth Winter (12/2016), "Feminist Fairies and Hidden Agendas": "the term contes de fées ... was coined by ... d'Aulnoy in 1697, when she published her first collection of tales." Volker Schröder (2018-2019): this collection "is often described as 'lost' or 'untraceable'" and its "sequel has become just as scarce"; but d'Aulnoy's tales are available online, and mixed reviews such as those of the Brothers Grimm may call to mind her childhood marginalia: "if you have my book and ... don't appreciate what's inside, I wish you ringworm, scabies ... and a broken neck."

A couple of articles that are free to read online break down specifics of d'Aulnoy's stories. In "A Transformed Woman," part of her occasional column On Fairy Tales at Tor.com, Mari Ness discusses Madame d'Aulnoy's "The White Cat," a story that has also been recommended previously on Metafilter. And in "Early Modern French Feminine Narratives: Subverting Gender Roles and Sexual Identity in Mme d'Aulnoy's Beauty or the Fortunate Knight (1698)," [PDF] Harold Neeman discusses the story also known as "Belle-Belle" (likewise recommended previously on Metafilter).

More general thematic analyses of work by d'Aulnoy and her peers include Bronwyn Reddan's "Scripting Love in Fairy Tales by Seventeenth-century French Women Writers" [PDF] and "Thinking Through Things: Magical Objects, Power, and Agency in French Fairy Tales" [PDF] (the latter available temporarily from Project MUSE) and also Meghan Kort's "Imagining Girlhood in Seventeenth-Century Female-Authored Fairytales."

Works by several other authors writing in French from the 17th C. to the 19th C. illuminate d'Aulnoy's connections and her legacy (often via the collection Four and Twenty Fairy Tales, which is also at Gutenberg):

• Marie-Jeanne L'Héritier (Wikipedia): "The Discreet Princess; or The Adventures of Finetta," as discussed in Mari Ness's "Enchantment and Distrust." L'Héritier has also been credited as the co-author of the queer and/or trans (avant la lettre) romantic fairy tale, "Histoire de la Marquise-Marquis de Banneville," along with Perrault and L'Abbé de Choisy ("Une Collaboration Inattendue au XVIIe Siècle").
• Catherine Bernard (Wikipedia): Inès de Cordüe, which contains the story "Riquet à la houppe," which would later be retold by Perrault in a version available in English.
• Henriette-Julie de Murat (Wikipedia): "Perfect Love"; "Anguillette"; "Young and Handsome"; "The Palace of Revenge"; "The Prince of Leaves"; and "The Fortunate Punishment." Notes. See also Mari Ness's "Imprisonment and the Fairy Tales of Henriette Julie de Murat."
• Catherine Durand (Wikipedia.fr): Les petits soupers de l'esté, ou avantures galantes, avec l'origine des fées, which may only be available in English from Black Coat Press--one of many translations there by science fiction author Brian Stableford.
• Charlotte-Rose de Caumont de La Force (Wikipedia): "Fairer Than a Fairy"; and "The Good Woman." Notes.
• Gabrielle-Suzanne de Villeneuve (Wikipedia): "The Story of Beauty and the Beast." Notes. But see also Andrea H. Everett's thesis, Villeneuve's "La belle et la bête" (1740): An Annotated Edition in English. Incidentally, both translations include the surprising second half of the story in which Beauty and the Beast turn out to be cousins.
• Marguerite de Lubert (Wikipedia): "The Princess Camion"; "Princess Lionette and Prince Coquerico." Notes.
• Jeanne-Marie Leprince de Beaumont (Wikipedia): "The Prince Désir and the Princess Mignone"; "Prince Chéri"; "The Widow and Her Two Daughters"; "Prince Fatal and Prince Fortuné." Notes.
• Sophie Rostopchine, Countess of Ségur (Wikipedia): "Blondine, Bonne-Biche, and Beau-Minon"; "Good Little Henry"; "History of Princess Rosette"; "The Little Gray Mouse"; and "Ourson." See also Claire-Lise Malarte-Feldman's "La Comtesse de Ségur, a Witness of Her Time" [PDF] ("the adult reader today will find more than the dark sadomasochist that some critics have found"), available temporarily from Project MUSE.
• George Sand (Wikipedia): Légendes rustiques, available at Gutenberg in French, purports to tell local legends in a realist mode, but it also references fairies, ogres, and the fairy tale tradition in France. The version at Gallica features amazing illustrations by her son, e.g. "Les Demoiselles" or "Les Lavandières ou Laveuses de Nuit."

In this weekly series on being productive with technology, authors Jess Stratton, Garrick Chow, and Nick Brazzi introduce tools and tips to help make today's software and devices work more efficiently and powerfully for you. With everything from pointers on using Microsoft Office and Google platforms to learning social networking skills and discovering the most useful apps for your iPhone or Android device, there's something for everyone.

Note: Because this is an ongoing series, viewers will not receive a certificate of completion.

Amtrak is the latest transportation provider to require all passengers to wear facial coverings or masks to help prevent the spread of the coronavirus, beginning Monday. The intercity passenger rail agency joins most of the nation's passenger airlines and many public transit systems in requiring coverings or face masks on passengers. Customers will have to "wear a facial covering over their nose and mouth while in stations, on trains and [Thruway] buses," Amtrak said in a news release. "Facial coverings can be removed when customers are eating in designated areas, in their private rooms, or seated alone or with a travel companion in their own pair of seats. Small children who are not able to maintain a facial covering are exempt from this requirement." "The safety of Amtrak's customers and employees is our top priority," Amtrak President and CEO Bill Flynn said in a statement, "and requiring a facial covering is one more way we can protect everyone." To maintain physical distancing on

The station next to the Microsoft main campus is being expanded as part of the $3.7 billion Seattle-to-Overlake light-rail line to open in 2023.

Sound Transit is suing Microsoft for land and access to build light rail from Overlake to downtown Redmond, and even claimed the software giant was creating risks of missing the agency's August 2024 goal to complete the project. The institutions differ by $17.5 million over how much Sound Transit should pay to buy land next to Highway 520, plus easement rights for worker access and equipment storage.

The station next to the Microsoft main campus is being expanded as part of the $3.7 billion Seattle-to-Overlake light-rail line to open in 2023.

Mark Few called Corey Kispert Gonzaga’s ‘player of the game’ in their win against Baylor. Here's why the former King's High star is winning over his coach and teammates, and how he's fueling another tournament run for the Bulldogs.

Today on q: singer-songwriter Martha Wainwright, Canadian comedy couple Matt O’Brien and Julia Hladkowicz, industrial designer John Allen, Emmy-winning writer and producer Lena Waithe.

Today on q: author Margaret Atwood, filmmaker Ingrid Veninger, artist and author Douglas Coupland, hip hop veteran Sophia Chang.

April 27, 2020

May 4, 2020

Two relaxed, thoughtful helpings of Hammond side-by-side.

It's Mary's song today for our Alone Together series. She writes: "My son was helping me in the garden and announced 'There's a lobster in the grate!' A yabby had been washed out of one Adelaide's many creeks and had managed to climb up our drain and through narrow bars where it cowered under a leaf..."

As pure a life-affirming rush as the best pop music in any language.

Offers more than a whistle-stop tour of the hits.

Code revisions, short-term rentals and a donation of city land to the state's proposed billion-dollar freeway project through downtown are on the agendas of city meetings next week.

The post Little Rock schedules video ‘town hall’ Monday on code revision; city Board meeting Tuesday includes conflicting opinions on short-term rentals in Hillcrest appeared first on Arkansas Times.