Abstract: SERS-active materials are delivered to a remote zone, then optically interrogated to detect and analyze from a safe distance the presence of explosives or other materials which may or may not be hazardous. Delivery methods include deploying projectiles comprising SERS-active material(s) which distribute their contents upon deployment to a target zone.
Type:
Application
Filed:
November 29, 2010
Publication date:
January 3, 2013
Applicant:
SpectraFluidics, Inc.
Inventors:
Brian D. Piorek, Carl B. Meinhart, Seung Joon Lee
Abstract: For a rapid and real-time SERS detection of organic chemicals in the air and the interfaces of air/solids, colloidal silver and/or gold nanoparticles solution is sprayed, in the form of nano-/micro-sized droplets, at the desired target area where the analytes of interest are present, e.g., in the air or onto certain organic/inorganic interfaces.
Type:
Application
Filed:
November 4, 2011
Publication date:
November 8, 2012
Applicant:
SpectraFluidics, Inc.
Inventors:
Seung Joon Lee, Brian D. Piorek, Carl D. Meinhart
Abstract: A series of electronic-chemometric control processes to enhance the selectivity, concentration, analysis, and detec tion of chemical species (analytes) in the gas phase, such as when using SERS-based techniques. Controls consist variously of: 1) feedback of electronic signals corresponding to changes of static and variable parameters in targeted chemical species that vary according to a reduction, increase, maximization, linearization, or improved confidence in one or more chemometric output parameters; 2) methods for spatially locating the source of an analyte species; and, 3) variable duty cycling to save power and materials according to altered physical and environmental conditions within a monitored zone.
Type:
Application
Filed:
August 17, 2010
Publication date:
September 6, 2012
Applicant:
SpectraFluidics, Inc.
Inventors:
Brian D. Piorek, Carl D. Meinhart, Seung Joon Lee, Casey Hare, Norman Douglas Bradley
Abstract: Methods and apparatus for detection and/or analysis of gas phase analytes and chemical compounds. The apparatus can be formed with microfluidic cells containing a selected fluid that interacts with the analyte(s), wherein the fluid can selectively transition between a vapor phase and a liquid phase. During condensation of the fluid, the population of analytes present within the vapor phase region of the fluid can be transported into the liquid phase region of the fluid within the microfluidic cells. During evaporation of the fluid, the analytes can be substantially retained within liquid phase region of the fluid and within the cells. Repetitive cycling of this vapor/liquid exchange can provide a build-up of the analytes within the microfluidic cells where they can be detected/analyzed.
Type:
Application
Filed:
May 7, 2010
Publication date:
May 24, 2012
Applicant:
SpectraFluidics, Inc.
Inventors:
Brian D. Piorek, Carl D. Meinhart, Seung Joon Lee