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Institute for Single Crystals

National Academy of Sciences of Ukraine

61001, Ukraine, Kharkiv, 60 Nauky Ave., phone/fax: +38(057)340-86-19, e-mail: info@iscrystals.com

We offer

Product innovation

Monodisperse Spherical Heteroparticles Nano-powders of "Core-Shell" Type

Details

Materials and Products - Large-Size Sapphire Crystals


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Sapphire Substrate Blanks

Sapphire substrate blanks for Micro- and Optoelectronics with diameter from 25 to 250 mm and thickness to 40 mm


Specification
Size, mmDiameter 25...250, thickness to 40
Accuracy of preparation, mm
in diameter
in thickness

±0.05

±0.05
Blocks, twins, twin layers and cracks, inclusions that are visible in polarized lightNot allowed
Quality of the surfacesGrinding finish
Roughness of the surfaces (Ra), Å< 1
Transmission (%):
visible and IR spectral region (to 4,5 μm)
UV spectral region (0,2 μm)

85-87

70
Internal voltages, kg/mm2≤2
Crystallographic orientation

Our adress:


61001, Kharkov, 60 Lenin Ave.
phone:  +38(057)340-86-19,
fax:       +38(057)340-86-19,
e-mail:   info@iscrystals.com