quality control – TechConnect Briefs

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 [...]

Preparation and Characterization of Various Nanofluids

Williams W.C., Bang I.C., Forrest E., Hu L.W., Buongiorno J., Massachusetts Institute of Technology, US

As part of an effort to evaluate water-based nanofluids for nuclear applications, preparation and characterization has been performed for nanofluids being considered for MIT’s nanofluid heat transfer experiments. Three methods of generating these nanofluids are [...]

Preparation and Characterization of Various Nanofluids

Williams W.C., Bang I.C., Forrest E., Hu L.W., Buongiorno J., Massachusetts Institute of Technology, US

As part of an effort to evaluate water-based nanofluids for nuclear applications, preparation and characterization has been performed for nanofluids being considered for MIT’s nanofluid heat transfer experiments. Three methods of generating these nanofluids are [...]

A Novel Ultrasonic Method for Characterizing Suspensions of Nanoparticles

Africk S., Colton C.K., Prodyne Corp. and Massachusetts Institute of Technology, US

Originally developed to measure concentration of human Islets of Langerhans in transplant preparations, the Ultrasonic Pulsed Doppler (USPD) method uses a single transducer as both source and receiver of pulsed ultrasound to measure backscattered energy [...]

Imaging Ellipsometry: A Powerful Method for Biochip Development, QC and Evaluation

Laging M., Hoenig D., Eing A., Accurion, US

Biochip applications nowadays are taking the step from DNA to protein applications. Proteins show a vasting variety concerning their individual chemical behaviour, demanding new techniques regarding chip substrates and immobilization chemistries. Furthermore the use fluorescent [...]