particle size distribution – TechConnect Briefs

Ultrasonic Pulsed Doppler, a Novel Method for Nanoparticle Characterization

Africk S., Prodyne Corp., US

USPD is a unique ultrasonic backscatter technology for the characterization of nanoparticles. Particles are interrogated in motion and the backscattered energy is received at Doppler-shifted frequencies, allowing clutter-free detection of backscatter from particles in the [...]

New Powder Synthesis Technology: Cubic Nano Alumina

Fukuhara S., Tahara M., Miwa N., Ashitaka K., Tamai K., Morinaga H., Ogitani S., Fujimi Incorporated, JP

Alumina is chemically stable and excellent in hardness, heat resistance, and mechanical properties. That is the reason alumina is widely used as a structural material, an abrasive grain and a cutting tool. In general, alumina [...]

Multiangle dynamic light scattering for the improvement of multimodal and polydisperse particle size distribution measurements

Boualem A., Ferre C., Jabloun M., Jalocha A., Naiim M., Ravier P., CILAS, FR

This work brings a new and improving method to the determination of multimodal and polydisperse particle size distribution by Dynamic Light Scattering. In this context, we develop a Bayesian method for the estimation of the [...]

DNA detection using Laser Transmission Spectroscopy

Li F., Mahon A.R., Barnes M.A., Egan S., Feder J., Lodge D.M., Hwang C.-T., Schafer R., Ruggiero S.T., Tanner C.E., University of Notre Dame, US

Laser transmission spectroscopy (LTS) is a new quantitative and rapid technique for measuring the size, shape, and number of nanoparticles in suspension. We report on the application of LTS as a novel detection method for [...]

Modeling Aggregation and Size Distribution of Nanoparticles with Monte Carlo Simulation

Liu H., Surawanvijit S., Rallo R., Orkoulas G., Cohen Y., University of California, Los Angeles, US

The size distribution of the nanoparticles and their aggregates is crucial for predictions of the fate and transport of nanoparticles in the environment. A computational model was developed in the present work based on a [...]

Size distribution determination of nanoparticles and nanosized pores by small-angle X-Ray scattering on a multi-purpose X-ray diffractometer platform

Bolze J., Rekhi S., Macchiarola K., Litteer B., PANalytical B.V., NL

We present the small-angle X-ray scattering (SAXS) technique for the investigation of crystalline and amorphous materials on a mesoscopic length scale ranging from ca. 1 - 100 nm. Dry powders or dispersions of inorganic and [...]

Ultrasonic Pulsed Doppler (USPD): A Novel Ultrasonic Method for Characterizing Suspensions of Nanoparticles

Africk S.A., Colton C.K., Prodyne Corp., US

This paper describes a novel means for particle characterization, the Ultrasonic Pulsed Doppler (USPD) system. This system uses a single transducer to measure ultrasonic backscatter from moving particles to perform measurements of particle concentration, size [...]