4 May 2012 Investigating a drop-on-demand microdispenser for standardized sample preparation
Author Affiliations +
The existing assortment of reference sample preparation methods presents a range of variability and reproducibility concerns, making it increasingly difficult to assess chemical detection technologies on a level playing field. We are investigating a drop-on-demand table-top printing platform which allows precise liquid sample deposition and is well suited for the preparation of uniform and reproducible reference materials. Current research focuses the development of a sample preparation protocol for explosive materials testing based on drop-on-demand technology. Device settings were determined for optimal droplet formation and velocity. Droplet mass and reproducibility were measured using ultraviolet-visible (UV-Vis) absorption and a sensitive microbalance. The results presented here demonstrate the operational factors that influence droplet dispensing for specific materials (e.g. energetic and interferents). Understanding these parameters allows for the determination of droplet and sample uniformity and reproducibility (typical calibration goodness of fit R2 values of 0.991, relative standard deviation or RSD ≤ 5%), and thus the demonstrated development of a successful and robust methodology for energetic sample preparation.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ellen L. Holthoff, Mikella E. Farrell, and Paul M. Pellegrino "Investigating a drop-on-demand microdispenser for standardized sample preparation", Proc. SPIE 8358, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XIII, 83580V (4 May 2012); doi: 10.1117/12.918121; https://doi.org/10.1117/12.918121


W1.1 macro uniformity
Proceedings of SPIE (January 18 2009)
Recent progress in the development of ISO 19751
Proceedings of SPIE (January 16 2006)
Graphic arts color standards update: 1998
Proceedings of SPIE (January 01 1998)
How to ensure consistent color quality in inkjet proofing
Proceedings of SPIE (December 27 2001)
Graphic arts standards update: 1996
Proceedings of SPIE (March 28 1996)
Color standards activities in the graphic arts
Proceedings of SPIE (May 08 1994)
Graphic arts standards update for 1995
Proceedings of SPIE (April 26 1995)

Back to Top