Marquez M. – TechConnect Briefs

Intracellular Inclusions and Nanocrystals of magnetotactic coccus isolated from estuary in Colombia

Grisales S., Morillo V., Marquez M., Morales A., Salazar A., Universidad Nacional de Colombia Sede Medellín, CO

Magnetotactic bacteria containing intracellular membrane-bound nanocrystals of magnetite or greigite (Bazylinski, et al. 2004; Flies, et al. 2005). The bacteria may also have intracellular inclusions (Keim, et al. 2005). Magnetosome formation in magnetotactic bacteria provides [...]

Characterization of Intracellular Biogenic Crystals Synthesized by Freshwater Magnetotactic Bacteria (MTBs)

Morillo V., Morales A., Universidad Nacional de Colombia Sede Medellín, CO

Intracellular biogenic crystals synthesized by freshwater magnetotactic bacteria (MTBs) from Colombia were characterized. MTBs were separated from water/sediment samples using a magnetic field of 6 Gauss. Bacteria were observed by transmission electronic microscopy (TEM). Bacterial [...]

A Microfluidic Array with Micro Cell Sieves for Cell Cytotoxicity Screening

Wang Z.H., Kim M.C., Marquez M., Thorsen T., Massachusetts Institute of Technology, US

There is currently great interest in cell arrays for cell-based studies to improve experimental throughput. Microfluidics is an inherently scalable technology, offering an exciting new alternative to fabricate cell arrays for cell studies in a [...]

A Quasimolecular Approach to the Field-effect Molecular Transistor: Theory and Application

Zhao Y.-L., Allison T., Mujica V., Gonzalez C., Marquez M., NIST Center for Theoretical and Computational Nanosciences, US

DFT-based modified quasimolecular approach has been developed and implemented for studying molecular conductance successfully, in the case of molecular bridges attached to metal electrodes (Gonzalez et al. J. Phys. Chem. B. 2004, 108, 18414). In [...]