Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > Press > Glidewell Laboratories Announces Nanozirconia Technology Breakthrough

High-resolution transmission electron microscopy (HRTEM) image of Glidewell Laboratories' 3 nm nanocrystalline zirconia material produced by gas-phase condensation "bottom-up" nanotechnology.
High-resolution transmission electron microscopy (HRTEM) image of Glidewell Laboratories' 3 nm nanocrystalline zirconia material produced by gas-phase condensation "bottom-up" nanotechnology.

Abstract:
Glidewell Dental Lab's Continued Research and Development Efforts Lead to New Ceramic Nanotechnology

Glidewell Laboratories Announces Nanozirconia Technology Breakthrough

Newport Beach, CA | Posted on February 15th, 2011

Glidewell Laboratories, industry-leading provider of dental lab products and services and manufacturer of BruxZir Solid Zirconia dental material, Research & Development team has moved closer to producing transparent nanozirconia by successfully synthesizing 3 nm zirconia nanocrystals produced by "bottom-up" nanotechnology.

The research team, led by Ken Knapp, Glidewell Laboratories' program manager and lead researcher, developed a method for producing non-agglomerated 3 nm nanocrystalline zirconia powder using a revolutionary bottom-up nanotechnology technique known as "gas-phase condensation." The focused effort of the nanozirconia research team over the last year has resulted in new discoveries about the nature of sub-5 nm nanozirconia crystals. Glidewell Laboratories has filed a U.S. patent application on the new ceramic nanotechnology (patent pending). This method consists of colliding high-energy yttrium, zirconium and oxygen ions together in an energetic gaseous phase and condensing yttria zirconia nanocrystal particles resulting from atomic collisions during flight in the gas phase. The condensed yttria zirconia nanocrystal particles are separated from the gas phase and collected in the form of nanocrystalline powder. According to Knapp, "The key to making transparent polycrystalline zirconia material is starting with a non-agglomerated yttria zirconia primary crystal size less than 5 nm. Glidewell's new gas-phase condensation nanotechnology for producing nanozirconia will allow us to overcome the fundamental polycrystalline birefringence barrier to manufacturing a transparent, high-strength monolithic dental ceramic product."

Conventional nanozirconia powder is typically produced by "top-down" nanotechnology methods such as hydrothermal synthesis (calcining followed by ball-milling). Many of the nanozirconia powders available on the market today are comprised of hard-agglomerated nanocrystals with a primary crystal size of approximately 30 nm. After sintering, typical nanozirconia grain size is between 500-1000 nm. The top-down method is widely used to produce nanocrystalline materials by breaking down larger particles and agglomerates into smaller ones, typically by ball-milling. The bottom-up nanotechnology method builds up nanoscale materials atom by atom or molecule by molecule. Bottom-up nanoscale science and technology is the state of the art for producing the next generation nanoscale materials and devices. The bottom-up method has a lower scale limit on the atomic or molecular level. Additionally, the bottom-up-produced nanocrystalline structures are not altered during the process of forming the nanoscale crystals, whereas top-down methods alter the crystal structure and surface chemistry.

Robin Carden, senior director of Glidewell Laboratories materials research and development said, "Glidewell's nanozirconia material produced by the gas-phase condensation method overcomes the inherent sub-5 nm crystal size production barrier and hard-agglomeration formations found in conventional nanocrystalline ceramic processing."

Common zirconia dental ceramics are translucent and not transparent as a result of light-scattering during transmission by birefringence and porosity. Light-scattering by birefringence is an intrinsic property of polycrystalline optical materials with an anisotropic crystalline index of refraction. Birefringence is reduced dramatically when the sintered grain size is reduced below 100 nm. Porosity causes light-scattering in the visible spectrum between 400-700 nm, which reduces the zirconia optical transparency.

The future for high-strength esthetic nanozirconia is agglomerate-free sub-5 nm powder. James Glidewell, CDT, CEO and president of Glidewell Laboratories said, "Our continued nanozirconia research efforts, from the fundamental way that zirconia nanocrystals are formed to new sintering methods, will allow us to extend our BruxZir® product life into the next generation of nanocrystalline dental ceramics."

For a closer look at BruxZir Solid Zircoinia, visit www.bruxzir.com

####

About Glidewell Laboratories
Glidewell Laboratories is a privately owned corporation that has more than 40 years of history as a provider of high-quality services and products to dental laboratories nationwide. It has its own 73-person Research and Development team and is the most resourceful dental laboratory in the world. Its newly developed CAD/CAM processing capabilities are recognized as among the most advanced in the industry. To view our large selection of products and services, visit www.glidewelldental.com

For more information, please click here

Copyright © Glidewell Laboratories

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Organometallics welcomes new editor-in-chief: Paul Chirik, Ph.D. July 22nd, 2014

The Hiden EQP Plasma Diagnostic with on-board MCA July 22nd, 2014

Iran to Hold 3rd Int'l Forum on Nanotechnology Economy July 22nd, 2014

Nanometrics Announces Upcoming Investor Events July 22nd, 2014

Products

QuantuMDx announce prototype handheld lab for 15 minute malaria diagnosis and drug resistance testing April 23rd, 2014

Nanovations Sets new Benchmark in Automotive Windscreen Coating Durability: Nanovations new automotive glass coating Vision Protect, sets new benchmark in glass coating durability March 23rd, 2014

Tawada CleanTech to show fabric duct and eco cool coating in MegaBuild March 21st, 2014

NEI Introduces Self-healing Anti-corrosion Coating for Zinc-Plated and Galvanized Steel March 14th, 2014

Materials/Metamaterials

Penn Study: Understanding Graphene’s Electrical Properties on an Atomic Level July 22nd, 2014

NUS scientists use low cost technique to improve properties and functions of nanomaterials: By 'drawing' micropatterns on nanomaterials using a focused laser beam, scientists could modify properties of nanomaterials for effective applications in photonic and optoelectric applicat July 22nd, 2014

Steam from the sun: New spongelike structure converts solar energy into steam July 21st, 2014

Carbyne morphs when stretched: Rice University calculations show carbon-atom chain would go metal to semiconductor July 21st, 2014

Announcements

Nanometrics Announces Upcoming Investor Events July 22nd, 2014

Bruker Awarded Fourth PeakForce Tapping Patent: AFM Mode Uniquely Combines Highest Resolution Imaging and Material Property Mapping July 22nd, 2014

NIST shows ultrasonically propelled nanorods spin dizzyingly fast July 22nd, 2014

Penn Study: Understanding Graphene’s Electrical Properties on an Atomic Level July 22nd, 2014

Patents/IP/Tech Transfer/Licensing

Bruker Awarded Fourth PeakForce Tapping Patent: AFM Mode Uniquely Combines Highest Resolution Imaging and Material Property Mapping July 22nd, 2014

Rice's silicon oxide memories catch manufacturers' eye: Use of porous silicon oxide reduces forming voltage, improves manufacturability July 10th, 2014

Using Sand to Improve Battery Performance: Researchers develop low cost, environmentally friendly way to produce sand-based lithium ion batteries that outperform standard by three times July 8th, 2014

Let there be light: Chemists develop magnetically responsive liquid crystals - UC Riverside discovery has applications in signage, posters, writing tablets, billboards and anti-counterfeit technology June 26th, 2014

Dental

New Powder Nanocomposite Miracle in Bone Recovery May 10th, 2014

Newly-Produced Bone Cement Able to Carry Medicine April 21st, 2014

Plasma tool for destroying cancer cells: Inducing biological tissue damage with an atmospheric pressure plasma source could open the door to many applications in medicine March 26th, 2014

Scientists develop world’s first light-activated antimicrobial surface that also works in the dark March 24th, 2014

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More














ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







© Copyright 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE