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Search Publications by: J Greg Gillen (Fed)

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Displaying 1 - 25 of 221

Improving Particle Collection Efficiency of Sampling Wipes used for Trace Chemical Detection

December 31, 2021
Author(s)
J Greg Gillen, Jeffrey Lawrence, Edward Sisco, Matthew E. Staymates, Liz Robinson, Jennifer R. Verkouteren, Alexander Bulk
Improvement of the particle collection efficiency of sampling wipes is desirable for optimizing the performance of many wipe-based chemical analysis techniques used for trace chemical screening applications. In this note, commercially available Teflon

Visualizing Shed Skin Cells in Fingerprint Residue using Dark Field Microscopy

March 5, 2020
Author(s)
Shinichiro N. Muramoto, William Alexander Osborn, J Greg Gillen
The proof of concept study was able to show that dark field microscopy could be used to provide sufficient contrast for cell visualization in fingerprints with high sebum content. Although the application is limited to smooth surfaces that do not scatter

Emerging techniques for the detection of pyrotechnic residues from seized postal packages containing fireworks

January 24, 2020
Author(s)
John Gillen, Thomas Forbes, Jennifer R. Verkouteren, Shannon T. Krauss, Karlijn Bezemer, Arian C. van Asten, Peter J. Shoenmakers, Mattijs Koeberg
High volume screening of parcels with the aim to trace the illegal distribution and selling of fireworks using postal services is challenging. Inspection services have limited manpower and means to perform extensive visual inspection. In this study, the

Review of the National Institute of Standards and Technology Research Program in Trace Contraband Detection

April 14, 2019
Author(s)
J Greg Gillen, Jennifer R. Verkouteren, R. Michael Verkouteren, Marcela Najarro, Edward Sisco, Matthew Staymates, Jessica L. Staymates, Robert A. Fletcher, Jeffrey Lawrence, Elizabeth Robinson, Alexander T. Bulk, Joe Bennett, Shin Muramoto, Thomas Forbes
Current national priorities in homeland security have led to an unprecedented level of utilization of explosives trace detection (ETD) systems for counterterrorism and law enforcement. Despite the widespread deployment of ETD instruments at airports

Targeting hMSC Response via Surface Carbonyl Groups, Contact Angle, and Protein Interactions

March 1, 2019
Author(s)
Max J. Lerman, Shinichiro Muramoto, Navein Arumugasaamy, Michael Van Order, Josephine Lembong, Anushka Gerald, John G. Gillen, John P. Fisher
Traditional 2D culture systems made of polystyrene (PS) require the addition of surface chemistry beyond the nominal phenyl groups present to facilitate and encourage cell adhesion. Determining the surface properties which enhance protein adhesion from