Stewart M. – TechConnect Briefs

Enhanced Kinetics of Enzymatic Nanosensors

Ancona M., Breger J., Medintz I., Stewart M., Susumu K., Walper S., Naval Research Laboratory, US

Nanosensors employing quantum dots (QDs) and functional moieties such as enzymes are promising for diagnostics and chemical/biological threat activity. Their small size permits cell penetration and their inherent photochemical properties are well-suited for rapid, optical [...]

Peptide-Mediated Cellular Delivery of Semiconductor Quantum Dots

Blanco-Canosa J., Dawson P., Delehanty J., Deschamps J., Gemmill K., Huston A., Medintz I., Oh E., Stewart M., Susumu K., US Naval Research Laboratory, US

Semiconductor CdSe/Zn quantum dots are ideal materials for biological imaging due to their superior optical properties over fluorescent proteins and organic dyes. However, cytosolic cellular delivery of quantum dots has been hindered by endosomal sequestration [...]

Quantification of Properties for Ferroelectric Thin Films Using Piezo-response Force Microscopy

Blackburn J., Cain M.G., Cuenat A., Lowe M.J., Stewart M., National Physical Laboratory, UK

Ferroelectric thin films are used within FE-RAM Memory devices, thermal imaging cameras and for new and emerging micro-integrated applications. Piezo Force Microscopy (PFM) is a method that can be used to probe (using a modified [...]