Super-resolution microscopy typically achieves high spatial resolution, but the temporal resolution remains low. We report super temporal-resolved microscopy (STReM) to improve the temporal resolution of 2D super-resolution microscopy by a factor of 20 compared to that of the traditional camera-limited frame rate. This is achieved by rotating a phase mask in the Fourier plane during data acquisition and then recovering the temporal information by fitting the point spread function (PSF) orientations. The feasibility of this technique is verified with both simulated and experimental 2D adsorption/desorption and 2D emitter transport. When STReM is applied to measure protein adsorption at a glass surface, previously unseen dynamics are revealed.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1021/acs.jpclett.6b02098 | DOI Listing |
Column chromatography is a widely used analytical technique capable of identifying and isolating a desired chemical species from a more complicated mixture. Despite the method's prevalence, theoretical descriptions have not advanced to accommodate today's common analyte, proteins. Proteins are increasingly used as biologics, a term that refers to biological pharmaceuticals, and present new complexities for chromatographic separation.
View Article and Find Full Text PDFLangmuir
June 2018
Department of Electrical and Computer Engineering , Rice University, MS 366 , Houston , Texas 77251-1892 , United States.
Insight into the mechanisms driving protein-polymer interactions is constantly improving due to advances in experimental and computational methods. In this study, we used super-temporal-resolved microscopy (STReM) to study the interfacial kinetics of a globular protein, α-lactalbumin (α-LA), adsorbing at the water-nylon 6,6 interface. The improved temporal resolution of STReM revealed that residence time distributions involve an additional step in the desorption process.
View Article and Find Full Text PDFJ Phys Chem Lett
November 2016
Department of Electrical and Computer Engineering, Rice University, MS 366, Houston, Texas 77251-1892, United States.
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!