Colby Ashcroft
6 Papers
29 Citations
Colby Ashcroft is an academic researcher. The author has contributed to research in topics: Particle & Nanoparticle tracking analysis. The author has an hindex of 3, co-authored 6 publications.
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Papers
Patent
System and method for characterizing particulates in a fluid sample
Colby Ashcroft,Brian DiPaolo,Gjergji Konica,Thomas Castner,Bernardo Cordovez,Christopher M. Earhart,David Erickson,Robert Hart +7 more
- 21 Feb 2017
TL;DR: In this article, a system for characterizing at least one particle from a fluid sample is disclosed, which includes a filter disposed upstream of an outlet, and a luminaire configured to illuminate the particle at an oblique angle.
16
Near-Field Light Scattering Techniques for Measuring Nanoparticle-Surface Interaction Energies and Forces
Perry Schein,Colby Ashcroft,Dakota O'Dell,Ian Adam,Brian DiPaolo,Manit Sabharwal,Ce Shi,Robert Hart,Christopher M. Earhart,David Erickson +9 more
TL;DR: The techniques for measuring the mechanical interactions between nanoparticles and surfaces using near-field light scattering are described and the reproducibility of and experimental uncertainty in the measurements made using the NanoTweezer surface instrument are characterized.
13
Patent
Using optical forces to measure the property of a substance
Robert Hart,Bernardo Cordovez,Christopher M. Earhart,Brian DiPaolo,Abbey Weith,Neha Thomas,Ian Adam,Colby Ashcroft +7 more
- 16 Mar 2015
TL;DR: In this article, the authors present devices, methods, and systems for measuring a property of a substance by using optical waveguides and the observations of substance-waveguide interactions.
1
Patent
Methods for identification of particles in a fluid sample
Colby Ashcroft,Brian DiPaolo,Gjergji Konica,Thomas Castner,Bernardo Cordovez,Christopher M. Earhart,David Erickson,Robert Hart +7 more
- 09 Jul 2020
TL;DR: In this paper, a method for distinguishing proteinaceous and non-proteinaceous particulates in a fluid sample is presented. But the method is not suitable for detecting polysorbate particles, silicone oil or protein monomers.
•Posted Content
Using single nanoparticle tracking obtained by nanophotonic force microscopy to simultaneously characterize nanoparticle size distribution and nanoparticle-surface interactions
Delyan R. Hristov,Dong Ye,Joao Medeiros de Araújo,Joao Medeiros de Araújo,Colby Ashcroft,Brian DiPaolo,Robert Hart,Christopher M. Earhart,Hender Lopez,Kenneth A. Dawson +9 more
TL;DR: Nanophotonic force microscopy has been shown as a viable method for measuring the force between surfaces and individual particles in the nano-size range and the methodology developed in this work can be used to study complex particle mixtures and the surface alteration of materials.