HERE - American Association for Crystal Growth

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our knowledge more effectively. The National ResearchCouncil has made some recommendations in Report #12640of September 2009 entitled Frontiers of Crystalline Matter:From Discovery to Growth. Four of the five recommendationsrelate to the education of the next generation of crystalgrowth engineers and scientists. This education should bedone before the rest of us experienced crystal growers aregone. Some details of my attempt to follow the advice of theNRC are presented in my blog “crystallinematerialsnetwork.blogspot.com”. The link to the NRC Report is also availablethere.DB: Can you give an example of how we can leverage ourknowledge to do smarter production?DW: Consider the silicon solar industry that is now on itsback and going bankrupt as Asian companies are coming into buy up the failed company resources. We need to use asmarter and more energy efficient approach to silicon crystalgrowth. The solar industry has followed the semiconductorindustry into the trap of a very energy intensive “polysilicon”synthesis and remelting process. The resulting oxygenprecipitation defects are beneficial for electronic grade wafers,gettering impurities during device processing. However,in solar wafers oxygen precipitates act as recombinationcenters, killing the lifetime. The oxygen comes fromthe dissolution of the quartz crucible during remelting andcrystal growth. We need a new paradigm that avoids remelting– a “disruptive technology” that will save about fiftypercent of the energy used in the present manufacturing process.In 1987, I collaborated with Mohendra Bawa on USpatent 4,710,260 “Deposition of silicon above its meltingpoint”. This patent was never reduced to practice becausethe containment method was unfeasible. I have recently inventeda new containment material and method based on anitrogen economy instead of oxygen. My provisional patentin March of 2009 was followed by a non-provisional patentapplication in March of 2010 which should issue in 2013.With appropriate investors and partners, ANAXTAL silicontechnology will enable direct melt transfer from a silanefeedstock source to the silicon crystal growth process andsave the energy now lost due to the lack of vertical integration.14AACG Newsletter Summer 2013
Announcing theACCGE-19Photo ContestSponsored byJournal of Crystal GrowthPhotographs portraying scientific, technical, or artisticaspects of crystals, crystal growth, or characterizationare solicited. The photos will be displayedeach day as a slide show in addition to beingdisplayed in a prominent location at the meeting.Submissions will be voted on by conference attendees,who will be asked to judge entries placedin the following 3 categories:1) Natural untouched micrographs or photographs2) Photographs including digital manipulation (andcomputational simulations)3) Student microscopist/photographerJudging and AwardsAt the ballot box, the images and associated textwill be displayed for viewing and judging purposes.Winners will be announced during the Banquet andAwards Ceremony.First-place entries will receive an award and a prizeof $150. If a student wins best entry in the othercategories, they are only eligible for one prize. Winningphotos will be published in the AACG newsletter.Contest Rules1) The contest is open to all registered meeting attendees.2) Contestants are allowed to submit one entry percategory.3) Entries must be submitted by email as a highresolution JPEG with a maximum size of 10MB.4) Please do not put text on the photo unless it ispart of the image.5) In a separate text or Word file, please includethe title, name(s), and affiliation(s) along with adescription of the technical significance of the entry,and/or the artistry that it represents (50 wordsor less). Identify the appropriate category for judging(untouched micrograph or digitally modified).Student entries should be clearly noted.Entries should be submitted by email to the photocontest organizer, Candace Lynch, by July 5,2013. Please direct any questions or comments tothe organizer:Candace Lynch, Inrad OpticsPhone: 201-767-1910Email: candace.lynch@gmail.comAACG Newsletter Summer 2013 15
Page 3 and 4: AACG newsletterEDITORCandace LynchI
Page 5 and 6: AACG Newsletter Summer 2013 5
Page 7 and 8: ObituaryIchiro SunagawaIchiro Sunag
Page 9 and 10: Upcoming EventsJuly 7-12, 2013Gordo
Page 11 and 12: At lunch on the harbor at Poulithra
Page 13: were continuing bonding problems be
Page 17 and 18: Recent Government Contracts Awarded
Page 19: Crystal IS- Albany, New YorkCrystal

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