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Home > Spherical Particles > By Material > Glass Spheres and Microspheres > Solid Glass Particles > Barium Titanate Glass Microspheres

Barium Titanate Glass Microspheres

Barium titanate glass is a unique optical glass formulation based on a large percentage of Barium Oxide (BaO) and Titanium Oxide (TiO2), as opposed to other traditional glass formulas which are mostly Silica (SiO2). Barium titanate glass offers a much higher refractive index compared to other glass formulations. Refractive Index is the ratio of the speed of light in a vacuum to the speed of light in the specified material - a description of how light slows down as it passes through an optical material. High refractive index microspheres are critical when used for optical systems where high refractive power is required such as endoscopy, micro-optics, defense and microscopy. Barium titanate glass microspheres will reflect back more light directly to the viewer. High index of refraction enables retroreflectivity which is often desired in guard rails, traffic signs, reflective paint, tape or clothing. Barium titanate glass hemispherically coated with aluminum ensures that the light bounces off the aluminum-coated half of the sphere and produces the retroreflective effect for high visibility in dark conditions.

Specific physical properties vary by product and lot number. The numbers below are general for barium titanate glass and to be used for reference only:
  • True Particle Density: ~4.2-4.6g/cc
  • Index of Refraction: ~1.9-2.2
  • Softening Temperature: ~600C

Please note that this material is barium titanate glass and does not have the dielectric properties of barium titanate powder.

CATEGORIES
Barium titanate glass spheres are desirable due to their high density, durability, and a much higher refractive index compared to other glass formulations.
Slightly conductive high density glass particles with thin gold (Au) coating on solid barium titanate glass core.
Retroreflective glass microspheres have a half-shell aluminum coating applied to solid barium titanate glass core.

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Products 1-13 of 13
Retroreflective Half-Shell Aluminum Coated Solid Glass Microspheres
Product Line: P2453BTA
Retroreflective Half-shell Aluminum Coating on Solid Barium Titanate Glass Microspheres
Density 4.1-4.5g/cc. Particle Size 30-100um. Uncoated, Silane and Fluorochemical Coatings
[more info...]
Price: $103.95-$557.00


Barium Titanate Solid Glass Microspheres and Spheres
Product Line: BTGMS
Classified Grades of Barium Titanate Solid Glass Microspheres - Density: 4.07-4.26g/cc - Sizes: 5um to 1000um (1.0mm) Index of Refraction: ~1.9 [more info...]
Price: $103.95-$261.00


Aluminum-Coated Solid Barium Titanate Glass Microspheres 4.2g/cc - 30-100um Diameter
Product Line: BTGMS-Al
Full Aluminum Coating (~500nm) on Solid Barium Titanate Glass Microspheres. Microspheres with high density and opacity offer a unique high-visibility solution to imaging in ultrasonic systems, optics and x-rays. [more info...]
Price: $131.25


Barium Titanate Solid Glass Microspheres 30-100 micron and 0.3-1mm Diameter
Product Line: BTGMS-B
Bulk Grades of Barium Titanate Solid Glass Microspheres - 4.05-4.25g/cc - Sizes: 30-100um and 0.3-1000um (1.0mm) - Index of Refraction: 1.9 [more info...]
Price: $52.50-$165.90


Gold-Coated Solid Glass Microspheres - High Density - Transparent Slightly Conductive Gold Coating on Glass Particles
Product Line: BTGMS-AU-4.49
Gold-Coated (~20nm coating thickness)
Solid Barium Titanate Glass Microspheres 4.49g/cc
Size range: 30-100um
[more info...]
Price: $293.48


High Index of Refraction Solid Glass Microspheres - Density 4.1-4.2g/cc
Product Line: BTGMS-HI
Classified Grades of High Index of Refraction Barium Titanate Solid Glass Microspheres
Density: 4.1-4.2g/cc
Sizes: 60um to 600um (0.6mm)
Index of Refraction: >1.93
[more info...]
Price: $131.25-$193.50


High Index of Refraction Solid Glass Microspheres - Density 4.1-4.2g/cc
Product Line: BTGMS-HI-B
Classified Grades of High Index of Refraction Barium Titanate Solid Glass Microspheres
Density: 4.1-4.2g/cc
Sizes: 60-75um, 70-90um, 125-190um, 180-265um, 325-600um
Index of Refraction: >1.93
[more info...]
Price: $107.10-$895.00


Barium Titanate Solid Glass Microspheres and Spheres
Product Line: BTGMS-ND2.2
Classified Grades of Barium Titanate Solid Glass Microspheres
Density: 4.35-4.38g/cc
Sizes: 5um to 85um
Index of Refraction: ~2.2
[more info...]
Price: $103.95-$261.00


Blue Fluorescent Hemispherical Coating on Solid Glass Microspheres 45-53 micron - 100X magnification
Product Line: HCMS-FMB
Fluorescent Blue Hemispherical Coating on Borosilicate, Soda Lime or Barium Titanate Solid Glass Spheres
Color: Bright Blue under daylight and UV illumination (445nm peak emission)
[more info...]
Price: $295.00-$495.00


Green Fluorescent  Hemispherical Coating on Solid Glass Microspheres 45-53 micron - 100X magnification
Product Line: HCMS-FMG
Fluorescent Green Hemispherical Coating on Borosilicate, Soda Lime or Barium Titanate Solid Glass Spheres
Color: Bright Green under daylight and UV illumination (515nm peak emission)
[more info...]
Price: $295.00-$600.00


Orange Fluorescent Hemispherical Coating on Solid Glass Microspheres 45-53 micron - 200X magnification
Product Line: HCMS-FMO
Fluorescent Orange Hemispherical Coating on Borosilicate, Soda Lime or Barium Titanate Solid Glass Spheres
Color: Bright Orange under daylight and UV illumination (606nm peak emission)
[more info...]
Price: $495.00


Red Fluorescent Hemispherical Coating on Solid Glass Microspheres 45-53 micron - 200X magnification
Product Line: HCMS-FMR
Fluorescent Red Hemispherical Coating on Borosilicate, Soda Lime or Barium Titanate Solid Glass Spheres
Color: Bright Red under daylight and UV illumination (607nm peak emission)
[more info...]
Price: $495.00-$550.00


Violet Fluorescent-Coated Glass Microspheres - Various sizes and densities fluorescent Violet glass, fluorescent Violet glass spheres, microspheres, particles, microparticles, beads, UV
Product Line: HCMS-FMV
Fluorescent Violet Hemispherical Coating on Borosilicate, Soda Lime or Barium Titanate Solid Glass Spheres
Color: Bright Violet under daylight and UV illumination (636nm peak emission)
[more info...]
Price: $495.00


Products 1-13 of 13

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About the Company:

Cospheric is a global leader in manufacturing and distribution of precision nanospheres, microspheres, and larger precision spherical particles. Scientists and engineers worldwide rely on us as a proven source to fulfill their needs for microparticles in narrow size ranges, wide selection of colors, densities, properties and formulations. We leverage our extensive technical expertise in micropowders to help each customer find an optimal microparticle solution for their needs. We ship worldwide daily out of our Santa Barbara, CA manufacturing facility.
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