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Janus Particles - Black Paramagnetic Microsphere Core with Partial White Coating (Bipolar and Bichromal Particles)
Janus Particles - Black Paramagnetic Microsphere Core with Partial White Coating (Bipolar and Bichromal Particles)
  • Janus Particles - Black Paramagnetic Microsphere Core with Partial White Coating (Bipolar and Bichromal Particles)
  • Janus Particles - Black Paramagnetic Microsphere Core with Partial White Coating (Bipolar and Bichromal Particles)
  • Janus Particles - Red Polymer Microsphere Core with Partial White Coating
  • Janus Particles - Blue Polymer Microsphere Core with Partial White Coating
  • Janus Particles - White Microsphere Core with Partial Green Coating
  • Janus Particles - Black Paramagnetic Microsphere Core with Partial Green Coating (Bipolar and Bichromal Particles)

Janus particles are microspheres with dual-functionality. We specialize in creating hemispherical coatings on microspheres of any material with diameters greater than 45micron. Custom colors, cores, sizes can be made as a special order.

The spheres were originally developed for very high tolerance electronic digital displays where functionalized janus microspheres are used to create an image that appears to the viewer.

Produced under Cosphreic Pat. 8,501,272

  • Core: Solid polymer microspheres, custom colors by request
  • Hemispherical Coating: Specified color (30-50% coverage), custom colors by request
  • Diameter: >90% of particles in specified size range. Currently 45um is the smallest diameter we offer with hemispherical coating
  • Shape: >90% spherical particles
  • Reactivity: Inert in most solvents
  • Temperature Stability: 90°C
  • Provided as a dry powder.

Liquid seal for compact micropiston actuation at the capillary tip, Antoine Barbot, Maura Power, Florent Seichepine, Guang-Zhong Yang, Science Advances, 27 May 2020: Vol. 6, no. 22.

Three-dimensional authentication and identification methods, devices, and systems,  Vladimir Mancevski, Paul Frederick McClure, Frank Nicholas Bruno, Authenticate, LLC,  WO EP US US10402831B2.

Select Particle Size and Density:
Item # Description/Size Status Price Qty
HCMS-BKPMS-FMG 45-53um
Hemispherically Coated Microspheres - Fluorescent Green Coating on Black Paramagnetic Core, 45-53um, ~0.08g, 1M Spheres
In Stock $495.00
HCMS-BLK-WHT 45-53um
Hemispherically Coated Microspheres - White Coating on Black Paramagnetic Core, 45-53um, ~0.04g, 500K Spheres
In Stock $295.00
HCMS-BLK-WHT 75-90um
Hemispherically Coated Microspheres - White Coating on Black Paramagnetic Core, 75-90um, ~0.07g, 200K Spheres
In Stock $295.00
HCMS-BLK-WHT 90-106um
Hemispherically Coated Microspheres - White Coating on Black Paramagnetic Core, 90-106um, ~0.5g, 1M Spheres
In Stock $295.00
HCMS-WPMS-BLK 250-300um
Hemispherically Coated Microspheres - Black Paramagnetic Coating on White Polyethylene Core, 250-300um, ~0.3g, 20K Spheres
In Stock $495.00
HCMS-WPMS-RED 250-300um
Hemispherically Coated Microspheres - Red Coating on White Polyethylene Core, 250-300um, ~0.3g, 20K Spheres
In Stock $495.00
HCMS-CPMS-BLK 850-1000um
Hemispherically Coated Microspheres - Black Paramagnetic Coating on Clear Polyethylene Core, 850-1000um, ~0.2g, 500 Spheres
In Stock $495.00
HCMS-CPMS-BLK 1.0-1.2mm
Hemispherically Coated Microspheres - Black Paramagnetic Coating on Clear Polyethylene Core, 1.0-1.2mm, ~0.2g, 300 Spheres
In Stock $495.00
HCMS-CPMS-BLK 1.2-1.4mm
Hemispherically Coated Microspheres - Black Paramagnetic Coating on Clear Polyethylene Core, 1.2-1.4mm, ~0.2g, 200 Spheres
In Stock $495.00
HCMS-CAS-RED-FMY 1.78mm
Hemispherically Coated Microspheres - Fluorescent Yellow Coating on Red Cellulose Acetate Core, 1.78mm, 100 Spheres
In Stock $295.00
HCMS-CAS-RED-FMB 1.78mm
Hemispherically Coated Microspheres - Fluorescent Blue Coating on Red Cellulose Acetate Core, 1.78mm, 100 Spheres
In Stock $295.00
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