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By Coating

Coated microspheres offer numerous advantages to scientists, engineers, and researchers, due to the combined properties of the core substrate material (e.g. solid or hollow glass, polymer, or silica) and the functional coating (e.g. metal, TiO2, ZnO, silane, or fluorochemical coatings).

For example, applying a thin gold coating to solid barium titanate glass microspheres produces slightly conductive high density glass microspheres. In another example of combined functionality, solid barium titanate glass microspheres are hemispherically coated with a thin aluminum coating and then further coated with either silane or fluorochemical to offer exceptional retroreflective properties. Hemispherical aluminum coating, the high refractive index of the solid glass barium titanate spheres, and the secondary coating that forces the spheres to "pop" to the surface, all work together to achieve superior retroreflectivity.

"Conductospheres" or nickel-coated hollow microspheres offer a unique combination of a lightweight conductive spherical powder, which can be used to provide electrical conductivity as a lightweight filler in paints, adhesives, and composites. While conductive silver-coated poly(methylmethacrylate) PMMA microspheres are ideal for applications where some deflection of core material is required for maintaining conductivity.

Many choices of coated microspheres are available, including custom partial coatings on glass microspheres and many metal-coated microparticles. If you don't see what you are looking for, please contact a microparticles expert for a recommendation.

CATEGORIES
Aluminum coatings on microspheres provide high reflectance while maintaining durability and withstanding harsh environments, particularly suited for demanding retroreflective beads applications.
A fluorescent coating is precisely applied to half of the core sphere, making the glass, ceramic or polymer spheres appear colorful and fluorescent in daylight, and exhibit bright fluorescent response under UV light.
Fluorochemical coatings increase hydrophobicity of retroreflective microspheres and are specifically designed for use in solvent-based (as opposed to aqueous) systems.
Gold coating on microspheres creates a slightly conductive, durable, and reflective surface, which will not tarnish or corrode, especially relevant for biological and medical applications.
Nickel-plating on microspheres offers a lightweight, lower cost, electrically conductive additive and an alternative option to expensive silver fillers.
Silane coatings on microspheres are designed to enhance retroreflectivity of spherical particles in aqueous (as opposed to solvent-based) systems.
Silver (Ag) coatings on microspheres are durable, highly reflective and create a thin conductive surface for electronics, aerospace, biotechnology, medicine and other demanding applications.
Titanium Dioxide, also known as TiO2 or titania, coatings on microspheres offers unique functionality. In the anatase form, titania exhibits photocatalytic activity under ultraviolet (UV) irradiation. In the rutile form, titanium dioxide demonstrates exceptional light scattering properties.

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Products 1-23 of 23
Bulk Grades of Solid Soda Lime Glass Microspheres 2.5g/cc. Optional Fluorochemical and Silane Coatings.<br>Mean Diameters 3-6um, 8-12um, 35-45um, 65-75um.
Product Line: P2000SL
Bulk Grades of Solid Soda Lime Glass Microspheres 2.5g/cc. Optional Fluorochemical and Silane Coatings.
Mean Diameters 3-6um, 8-12um, 35-45um, 65-75um
[more info...]
Price: $52.50-$174.00


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


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


250nm Silver on PMMA Cores
Product Line: PMMAMS-AG
Conductive Silver-Coated Poly(Methyl Methacrylate) PMMA Microspheres 1.2g/cc-1.3g/cc - Classified Grades [more info...]
Price: $315.00-$348.50


Silver Coated PMMA Micorparticles 5-125um
Product Line: PMPMP-AG
Conductive Silver-Coated Poly(Methyl Methacrylate) PMMA Microparticles 1.4-3.3g/cc - Classified Grades [more info...]
Price: $99.00


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


250nm Silver on PMMA Cores
Product Line: PMPMS-AG-1.3-1.6
Conductive Silver-Coated Poly(Methyl Methacrylate) PMMA Microspheres 1.3-1.6g/cc - Classified Grades [more info...]
Price: $162.50-$189.50


Silver Metal Coated Soda Lime Solid Glass Microspheres<br>Density 2.5g/cc
Product Line: SLGMS-AG
Conductive Silver Metal Coated Solid Soda Lime Glass Microspheres - Sizes between 1 and 180micron.
>90% in particle size range and >85% spherical particles.
[more info...]
Price: $103.95-$261.00


Soda Lime Solid Glass Silver Metal Coated Microspheres<br>Density 2.5g/cc
Product Line: SLGMS-AG-B
Conductive Silver Metal Coated Solid Soda Lime Glass Microspheres - Bulk Sizes between 11 and 160micron.
>80% in particle size range and >85% spherical particles.
[more info...]
Price: $103.95-$157.00


Conductive Silver Metal Coated Hollow Glass Microspheres - Density 0.49g/cc
Product Line: HGMS-AG
Hollow Glass Microspheres with Conductive Silver Coating
Densities From 0.1g/cc to 0.8g/cc
Sizes from 5um to 150um
[more info...]
Price: $103.95-$261.00


"Conductospheres™" Conductive Silver Metal Coated Hollow Glass Microspheres
Product Line: HGMS-AG-1.08
Highly electrically conductive microspheres can be used as a filler that is lighter than solid silver.
Add to paints, adhesives and composites to provide electrical conductivity.
[more info...]
Price: $248.50-$261.00


Conductive Silver Metal Coated Hollow Glass Microspheres - 10-150micron
Product Line: M-60-0.16
Conductive Silver Metal Coated Hollow Glass Microspheres 0.15-0.26g/cc
Various Sizes 10-150micron.
[more info...]
Price: $103.95-$261.00


Conductive Silver Metal Coated Hollow Glass Microspheres - Density 0.49g/cc
Product Line: M-40-0.49
Conductive Silver Metal Coated Hollow Glass Microspheres 0.41-0.72g/cc
Various Sizes 10-90micron
[more info...]
Price: $103.95-$193.50


Highly Electrically Conductive Hollow Glass Microspheres
Product Line: M-18-AG-0.75
Highly electrically conductive silver-coated microspheres with density of 0.75g/cc
Particle Size Range 5-30um. 45dB of EMI shielding at 20% loading.
[more info...]
Price: $103.95-$1,555.05


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


Nickel-plated Hollow Glass Microspheres 5-30um - Metal Coated Glass Beads, Spheres, Microparticles
Product Line: HGMS-Ni
Nickel-plated Hollow Glass Microspheres 5-30um [more info...]
Price: $103.95-$593.25


Photocatalytic Microspheres for Water Treatment, Titanium Dioxide Coated Hollow Glass Microspheres
Product Line: Photospheres
Photocatalytic Microspheres for Water Treatment, Titanium Dioxide Coated Hollow Glass Microspheres [more info...]
Price: $103.95-$874.13


Isospheres - Seeding Particles to Maximize Light Scattering for PIV Applications.
Product Line: Isospheres
Seeding Particles to Maximize Light Scattering for PIV Applications. [more info...]
Price: $103.95-$308.70


Conductive Silver Coated Silica Microspheres
Product Line: SiO2MS-AG
Conductive silica microspheres with the electrical conductivity and reflectivity of silver. [more info...]
Price: $279.50


Products 1-23 of 23

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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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