Does Shape of Microparticles Matter? Particle shape plays a critical role in how the particles travel, behave, interact with each other and their environment. It also influences particle flow characteristics. Flow characteristics (ball-bearing effect) of spherical particles: Spherical shape of microparticles is often desirable because spheres and microspheres are well-known for their ball-bearing effect. They … Read more
What is the density of material? Before we start talking specifically about measuring the density of powders, let’s look at the concept of measuring density in general. What does “density” mean? According to Encyclopedia Britannica, density is defined as mass of a unit volume of a material substance. The formula for density of a substance … Read more
By Allen Licha, PMP, Cospheric LLC Last month Cospheric attended the Quality Show in Rosemont, IL. As a global supplier of precision spherical particles, striving to provide the highest quality microparticles on the market, quality is a huge part of what we do at Cospheric. Performing accurate measurements is vital to our business. Metrology, the … Read more
What are microplastics? Microplastic (MP) is a broad term used to describe microscopic plastics with sizes ranging from 1um to 5mm1. Anything less than that can be considered nanoplastic (NP), which is also prevalent in the ocean. The shapes of microplastics can vary from fragments, fibers, pellets, film, and spheres((Luís Carlos de Sá, Miguel Oliveira, … Read more
Fluorescent Microspheres in Particle Dispersion Experiment Fluorescent microspheres produced by Cospheric LLC were used as part of ongoing work to to conduct particle dispersion experiments in plant canopies and study the mechanisms of fungal epidemiology in vineyards. The University of Utah in collaboration with USDA Labs in Corvallis, OR performed five field particle dispersion campaigns … Read more
Benefits of Microspheres in Drug Delivery There are numerous benefits of using microspheres in drug delivery due to their precise uniform dimensions, larger surface area per unit volume, as well as the ability to be surface-functioalized or loaded with active compounds and other additives. Typically microspheres in drug delivery are manufactured out of biodegradable materials … Read more
Density of particle vs. density of fluid in particle image velocimetry: Many flow visualization experiments are done in water but there are a variety of other liquids and even water-based solutions that will have differing densities whose velocity fields are being mapped or will be in the future. Therefore, having seed particles to match these … Read more
Particle size: Particle size is connected to many of the other parameters of seed particles in a PIV system. With size affecting visibility, flow conformity, and being integral in relation to pixel size. A rough number for ideal particle size is 1-100um though sizes in the nm and mm?s have been used for certain PIV … Read more
PIV is a vast field with varying techniques and differing areas of research. Techniques vary from 2D PIV, only viewing velocity in a plane of the fluid system, to high speed TOMO PIV which views a 3D area of fluid and can be time resolved allowing for acceleration data to also be obtained. Another difference … Read more
Particle Image Velocimetry (PIV) expresses a vast field with varying techniques and data acquisition methods. However, the main goal is providing an optical method of flow visualization. The exact information obtained depends on which method is used, with new algorithms and approaches being discovered constantly. There are generally two ways data is obtained PIV and … Read more
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