Application Library

The Measurement of Very Small Particles by Cross Correlation or Avalanche Photodiode Detectors

Walther W. Tcharnuter and Bruce. B. Weiner, Brookhaven Instruments Corporation, New York, USA The measurement of particle size using dynamic light scattering, also known as photon correlation spectroscopy, is well known. Scattered laser light is autocorrelated, fit either with cumulants to determine moments of the distribution, or with more sophisticated algorithms to determine the shape […]

Applications: CrossCorrSizingTheory
Instruments: BI-200SMBI-APDx

Behavior of Complex Solutions at Eastman Kodak

Researchers at the Eastman Kodak Company’s Dispersion Technology Laboratory based in New York, have used equipment from Brookhaven Instruments for several years now, to look at the solution behavior of water-soluble polymers and gelatine. Dr. Julia Tan explained some of the current applications of the Brookhaven equipment, which includes a BI-200SM goniometer and a TurboCorr […]

Applications: ColloidsComplex FluidsChemistry
Instruments: TurboCorr

BI-MwA praised by Rensselaer Polytechnic Institute

The Department of Chemistry and Chemical Biology at Rensselaer Polytechnic Institute, New York, has praised their Brookhaven BI-MwA Molecular Weight Analyzer for its ability to provide better quality and more detailed information than other light scattering instruments in the department. Assistant Professor Yvonne Akpalu explained: “Light scattering is a technique that everyone has problems with […]

Applications: Polymers
Instruments: BI-MwA

Hong Kong University of Science and Technology Uses Brookhaven Instruments

The Hong Kong University of Science and Technology physics department presented a study on the “Influence of liquid Phase on Nanoparticle-based giant electrorheological fluid.” The researchers, Xiuqing Gong and his colleagues, demonstrated how the chemical structures of silicone oils interacting with solid nanoparticles significantly influenced the giant electrorheological (GER) effect.In order to prepare and characterize […]

Applications: Gels
Instruments: NanoBrook Series

Brookhaven’s NanoBrook 90Plus Particle Size Analyzer Aids in Enhancing Intracellular Delivery of Therapeutic Nucleic Acids

A research on biomaterials entitled, “Degradable, Ph-Sensitive, Membrane-Destabilizing, Comb-Like Polymers For Intracellular Delivery Of Nucleic Acids” was featured in Science Direct. The study discussed the synthesis, characterization and membrane-destabilizing activity of a new series of degradable, pH-sensitive, comb-like polymers that could enhance the intracellular delivery of therapeutic nucleic acids. To facilitate this study, “smart” particles […]

Applications: Drug Delivery
Instruments: NanoBrook Series

BASF chooses Brookhaven again for chemicals research

BASF Agro Research, which develops chemicals for use in agriculture, has purchased a NanoBrook ZetaPALS from Brookhaven Instruments, based on Phase Analysis Light Scattering (PALS), for the determination of zeta potential of colloidal suspensions. Zeta potential is a useful indicator of a formulation’s stability. The new instrument has a particle sizing option based on DLS […]

Applications: Zeta
Instruments: NanoBrook Series

Researchers Study CN Micelles with Brookhaven’s NanoBrook 90Plus Particle Size Analyzer

The Journal of Dairy Sciences featured a research study entitled, “Effect of Solvent and Temperature on the Size Distribution of Casein Micelles Measured by Dynamic Light Scattering”, conducted by C.M. Beliciu and C.I. Moraru. The researchers used the NanoBrook 90Plus Particle Size Analyzer to investigate the effect of solvent on the accuracy of casein (CN) […]

Applications: Colloids
Instruments: NanoBrook Series

BI-200SM and NanoBrook ZetaPALS Invaluable in Studying MeO Nanoparticles

A research study entitled, “Stability And Aggregation Of Metal Oxide Nanoparticles In Natural Aqueous Matrices” was conducted to present a better understanding of the factors that influence fate and transport of metal oxide (MeO) nanoparticles in a diverse array of real environment media. In this study, the researchers dispersed MeO nanoparticles, TiO2, ZnO and CeO2 […]

Applications: NanoParticles
Instruments: NanoBrook SeriesBI-200SM

Sizing up Dispersions

Products as diverse as cosmetics, paints and inks, and drugs and polymer latexes all depend upon the dispersion of particles in a liquid phase. To produce these colloidal dispersions accurately and ensure that they perform according to specification, particle size needs to be monitored during manufacturing and as part of quality control of the final […]

Applications: ColloidsFormulations
Instruments: NanoBrook Series

New Analysis of Red Blood Cells (RBC) using the ZetaPALS

By Bruce B. Weiner Ph.D. Introduction: Zeta potential is a useful property to know for colloids, nanoparticles, and proteins. It is a substitute for the otherwise hard to measure surface charge. The zeta potential is not equal to the surface potential but rather it is the electrostatic potential difference between a rotationally averaged point at the […]

Applications: BiopharmaDiagnosticZeta
Instruments: NanoBrook Series