Everything about Microspheres
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  • Bichromal Janus Particles, Microspheres, Microbeads – Stock selection or Custom-made

    Bichromal (half-white half-black or any other color) Microspheres, Janus Particles

    Bichromal (half-white half-black or any other color) Microspheres, Janus Particles. In this picture - Paramagnetic black microspheres with partial white coating - Magnification 40x.

    Cospheric offers unique capability to manufacture Janus microspheres and microparticles with partial coatings and dual functionality. Currently half-shell or hemispherical coatings can be applied to any sphere (glass, polymer, ceramic) in sizes 45micron in diameter and higher. Coatings can be customized for any color and coverage of between 20% to 60% of the sphere. Each coating is custom formulated for color, charge, magnetic, electric, and surface properties, and solvent resistance per customers’ needs.

    Half-coated glass microspheres - Partial coating on glass particles

    Half-coated glass microspheres - Partial coating on glass particles. In this picture - Soda lime glass microspheres with partial red coating - Magnification 40x.

    Hemispherical coatings of less than 1 micron with tolerances as low as 0.25 micron have been routinely demonstrated.  Color combinations are truly unlimited. White, black, silver, blue, green, red, yellow, brown, purple as well as transparent microspheres have been made. Sphericity of greater than 90% and custom particle size ranges are offered.

    We have successfully coated solid and hollow glass microsphere, including soda-lime, borosilicate, and barium titanate glass microspheres. We have also coated on silver.

    Half-coated Microspheres

    Half-coated Microspheres

    Optically anisotropic spheres and janus particles with magnetic half-shells have been originally developed for applications in electronic displays, such as e-paper, but are now widely used in numerous applications in diagnostics, medical research, microscopy and biotechnology, as well as electronics, due to their ability to orient themselves in response to electromagnetic field and show a visual response. This is achieved by making spheres both bipolar and bichromal, with dipole precisely aligned with two differently colored hemispheres. As the spheres align themselves, the viewer will observe the color of one hemisphere, while the other hemisphere will be hidden from view, providing an obvious strong visible indication of the presence of the field or other stimuli.  In alternating electromagnetic field, these microspheres have been proven to spin at hundreds of times per second.

  • Market Research Report – Microspheres: Technologies and Global Markets – 2013


    In summer of 2013 BCC Research has issued an updated market research report on Microspheres: Technologies and Global Markets. According to the report, the global market for microspheres was estimated to total nearly $2.2 billion in 2012 and is projected to increase to $2.4 billion in 2013; the market should total $4.4 billion by 2018 and have a five-year compound annual growth rate (CAGR) for of 12.6%.

    This report provides:

    • An overview of the global market and technologies for microspheres, which are spherical microparticles used as components in many advanced materials and composites, in the healthcare and personal care industries, and in many specialty research and development applications.
    • Analyses of global market trends, with data from 2012, estimates for 2013, and projections of compound annual growth rates (CAGRs) through 2018.
    • Identification of a variety of types of microspheres available on the market, as well as relevant industries, technologies and applications.
    • Examination of demand for microspheres in six major industries: composites, paints and coatings, oil and gas, cosmetics and personal care, biotechnology and life sciences, and medicine and medical devices.
    • Descriptions of different types of microspheres with respect to their chemical composition, including glass, ceramic, and polymer microspheres, and unique material properties that make them suitable for specific industries and applications.

    ($ MILLIONS)
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    BCC analyzes the global market for microspheres from both the manufacturing and demand points of view. Since there are several types of microspheres that vary drastically in quality, chemical properties, functionality and price, each type of microsphere is discussed in detail, including materials, manufacturing processes, advantages, prices and primary applications. Similarly, due to these variations microsphere use in six major industries are discussed and analyzed in detail.

    Detailed analysis and market forecasts are provided per industry, type of microsphere and geographic region through 2018. The report describes major players in the industry and examines recent advances in technology, newly evolving markets and companies as well other factors influencing supply and demand.

    This report analyzes microspheres—homogeneous microparticles of 1 micron to 1,000 microns in diameter. Microspheres can be solid or hollow and made from a variety of raw materials.


    BEWARE of rip-off reports that have been published this year by Research and Markets, Transparency Market Research, and other non-USA-based research firms, they contain partially plagiarized (reworded) and some completely inaccurate information.

    This authentic and accurate report was published by BCC research – a leading market research company specializing in reporting on changes driven by science and technology.  The analyst for this report is an expert in the field of microspheres. Yelena Lipovetskaya, CTO of Cospheric LLC, has more than 15 years of experience taking new technologies from concept to production in a variety of industries, including rotating microspheres electronic paper, charged microparticles for printing toner, digital displays, optical fiber, and medical devices.

    Yelena is the author of numerous applications, patents and published articles on microspheres technology and its applications and has held technical and managerial positions at Xerox Corp, Corning Inc., Cardinal Health, Gyricon, and Cbrite Inc. Yelena has a Bachelor’s degree in Chemical Engineering from Polytechnic University and a Master’s degree in Materials Science and Engineering from Rochester Institute of Technology, both in New York.

  • Microparticles for simulating fish egg dispersion and recruitment

    Understanding survival and mortality of fish in the early life stages has been a fundamental issue in biology and a central problem in fisheries oceanographic study for more than a century. It has been argued that most marine fishes begin life as an egg that floats in the sea, and, during their evolutionary history, the early life of fishes has surely been shaped to ensure the “continued existence of species” by the sheer pressure of natural selection, and stated that a fish to survive must deal with and exploit its physical and biological environments. However, although we are now in the 21st Century, there still remains a lot to be made scientifically clear in the early life of fishes. In the present lecture, I will talk about fundamental issues in the isolated floating eggs of marine fish, which many pelagic species spawn in thousands, millions, or sometimes almost billions during a life of an individual female. The topics contain description and discussion on the egg size, buoyancy and rising speed. Measurements on the eggs naturally spawned in aquaculture systems are firstly introduced. Several examples of egg vertical distribution, accumulation and dispersion observed through field surveys will be shown to consider how the egg size and buoyancy are adaptive to survive in the pelagic environment.1

    UVPMS-BG 180-212um - 40x MagnificationScientists who study fish require artificial micro-particles to simulate fish eggs and their dispersion behavior in water. In order to accurately simulate the dispersion of fish eggs it is important to use particles of the proper size and buoyancy/density. Particles with accurate size ranges and densities are now available from Cospheric LLC. Densities from 1.00g/cc up to 1.12 g/cc are available in size ranges from 10-27um on up to 0.85-1.0mm. Sea water particles of 1.025g/cc (UVPMS-BG-1.025), and fresh water beads of 1.00g/cc are in stock and available for quick delivery.

    Most fish eggs are in the size of 0.5-5mm1 with the typical size of 1mm being the most common.   Salt water fish eggs tend to be slightly less dense than medium saltwater at a density of about 1.020g/cc1.

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