Application Library

pathlength's effect on scattering

Why are DLS Measurements at High Concentration Difficult?

Despite the versatility of the DLS technique, there are several important considerations that cannot be ignored when using light scattering to characterize high-concentration solutions.

Applications: DLSPolymersSample Prep
Instruments: NanoBrook SeriesBI-200SM

Brookhaven’s NanoBrook ZetaPALS Aids in Synthesizing Nanomagnetic Particle for Magnetic Hyperthermia

BioMed Central featured a study entitled, “Physically Synthesized Ni-Cu Nanoparticles For Magnetic Hyperthermia”, authored by Martin Bettge, Jhunu Chatterjee and Yousef Haik. The goal of the study was to demonstrate how self-regulating magnetic hyperthermia could be achieved by synthesizing nanomagnetic particles with desired Curie temperature. The process used in this study was composed of melting […]

Applications: NanoParticles
Instruments: NanoBrook Series

NanoBrook 90Plus Particle Size Analyzer Used in Silver Nanoparticles Characterization

The Indian Academy of Sciences’ National Chemical Laboratory conducted a study entitled, “Synthesis of Silver Nanoparticles by Sophorolipids: Effect of Temperature and Sophorolipid Structure on the Size of Particles”. Researchers used Brookhaven’s NanoBrook 90Plus Particle Size Analyzer to determine Dynamic Light Scattering measurements in characterizing silver nanoparticles including its ligand shell. This specific technique was […]

Applications: NanoParticles
Instruments: NanoBrook Series

New instruments further polymer research at Nanyang

Research characterizing polymer-surfactant systems at Nanyang Technological University in Singapore has been given a boost recently in the form of several new pieces of equipment from Brookhaven Instruments. Michael KC Tam, Professor at the School of Mechanical and Production Engineering, explained, “Our research focuses on the microscopic and macroscopic properties of self-assembly systems, such as […]

Applications: Polymers
Instruments: BI-200SMBI-MwA
migrating bands in Brookhaven's DCP centrifuge

A Useful Tool for Measuring Carbon Black: Disc Centrifuge Photosedimentometry (DCP)

Summary An industrial carbon black sample was used for the purpose of demonstrating the efficacy of the Brookhaven Instruments DCP. Due to the intrinsically differential nature of the results, it is possible to identify the existence of multiple species even from raw, uncorrected results. The basis of this technique is sedimentation, meaning that larger particles […]

Applications: Carbon BlackParticle Sizing
Instruments: BI-DCP

Agrochemical Research at BASF

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 useful indicator of a formulation’s stability. The new instrument has a particle sizing option based on dynamic light scattering (DLS, […]

Applications: ColloidsAgroChem
Instruments: NanoBrook SeriesBI-200SM

Why is Ionic Strength Relevant to DLS Measurements?

The measurement of particle size by dynamic light scattering (DLS) is heavily dependent on the stability of materials being investigated. Interactions between simple, spherical, colloidal particles are most frequently described by a balance between attractive and repulsive interactions.

Applications: ColloidsDLSHigh SaltPolymersZeta
Instruments: NanoBrook SeriesBI-200SM

Probing Sub-microscopic Particles

Colloids are complex physical systems, but understanding their properties is important in the development of of products in a variety of sectors. The Bristol Colloid Center (BCC) at the UK’s University of Bristol has been using two different instruments from Brookhaven in their research into colloidal systems Use of Brookhaven’s Bl-200SM dynamic and static light […]

Applications: Colloids
Instruments: BI-200SM

Brookhaven Instruments Chosen for Characterization of Colloidal Systems

“Brookhaven Instruments’ BI-200SM Research Goniometer and Light Scattering System is critical for the characterization of colloidal systems,” said John C. Berg, Rehnberg Professor of Chemical Engineering and Director of the Engineering Centre for Surfaces, Polymers and Colloids at the University of Washington. “We use the instrument to determine the size of dispersed particles and lipid […]

Applications: Colloids
Instruments: BI-200SM