Patent application number | Description | Published |
20090176081 | Method and apparatus for making a highly uniform low-stress single crystal by drawing from a melt and uses of said crystal - The method of making uniform low-stress crystals includes immersing a seed crystal held at a temperature under its melting point in a melt in a crucible and drawing it from the melt. The crystal and/or melt are rotated relative to each other and a planar phase boundary surface is maintained between them by detecting a surface temperature of the melt and/or crystal and controlling temperature fluctuations by increasing or decreasing the rotation speed. The single crystals obtained by this method have a diameter ≧50 mm and no visible growth strips in a fishtail pattern when a 2-mm thick sample is observed between crossed polarizers. These crystals have an index of refraction uniformity Δn of <1 ppm and a stress birefringence of <1 nm/cm at 193 nm, so that optical elements suitable for DUV lithography can be made from them. | 07-09-2009 |
20100177377 | USE OF UNDOPED CRYSTALS OF THE YTTRIUM/ALUMINUM/BORATE FAMILY FOR CREATING NON-LINEAR EFFECTS - The present invention concerns a method of producing blue or UV light. To produce blue or UV light with the described crystal family it is proposed according to the invention that a crystal of the family A | 07-15-2010 |
20110130266 | METHOD AND APPARATUS FOR MAKING A HIGHLY UNIFORM LOW-STRESS SINGLE CRYSTAL BY DRAWING FROM A MELT AND USES OF SAID CRYSTAL - The method of making uniform low-stress crystals includes immersing a seed crystal held at a temperature under its melting point in a melt in a crucible and drawing it from the melt. The crystal and/or melt are rotated relative to each other and a planar phase boundary surface is maintained between them by detecting a surface temperature of the melt and/or crystal and controlling temperature fluctuations by increasing or decreasing the rotation speed. A low-stress crystal of formula: (A | 06-02-2011 |
20120033292 | USE OF UNDOPED CRYSTALS OF THE YTTRIUM/ALUMINUM/BORATE FAMILY FOR CREATING NON-LINEAR EFFECTS - Crystals of the yttrium/aluminium/borate family are used for producing blue or UV light. To produce blue or UV light with the described crystal family a crystal of the family A | 02-09-2012 |
20140255974 | Method and Use for the Detection of a Component of Interest in Biological Samples - The present invention relates to a use of bismuth ferrite crystals to detect a part of interest in biological samples. In order to provide a method which is cost-effective and in which a measurement can be carried out with a high degree of accuracy and which is quantifiable, the invention proposed that the part is marked with one or more bismuth ferrite crystals in a biological sample to be examined and the part marked in this manner is detected in the biological sample using at least one magnetic measuring method and at least on one optical measuring method. | 09-11-2014 |