Gary W Scheiffele

US Patent:

20030221996, Dec 4, 2003

Filed:

Jun 3, 2002

Appl. No.:

10/161019

Inventors:

Spyros Svoronos - Gainesville FL, US
H. Crouch - Chapel Hill NC, US
Hassan El-Shall - Gainesville FL, US
Kevin Powers - Gainesville FL, US
Gary Scheiffele - Gainesville FL, US
Rachel Worthen - Katy TX, US
Steven Wright - Hillsborough NC, US

International Classification:

B07B001/00

US Classification:

209/001000

Abstract:

An apparatus for classifying a mixture of fine and coarse particles in a fluid stream by size or density comprises a housing, a boundary layer momentum transfer device, and an inlet flow control mechanism. The housing comprises an inlet, an interior chamber, and a fine particle outlet. The boundary layer momentum transfer device comprises a plurality of disks stacked in spaced, parallel relation in the interior chamber. The disks are rotatable about a disk axis. The disks have respective central openings cooperatively defining a plenum having a closed axial end and an opposing open axial end. The plenum communicates with spaces defined between each adjacent disk to cooperatively define a fine particle flow path from the interior chamber, through the spaces, through the plenum and the open axial end thereof, and to the fine particle outlet. The inlet flow control mechanism communicates with the interior chamber and provides an adjustable inlet flow path into the interior chamber. The housing can include a cylindrical, conical, and/or scroll-shaped profile.

US Patent:

20110032521, Feb 10, 2011

Filed:

Sep 12, 2008

Appl. No.:

12/678017

Inventors:

Kevin W. Powers - Gainesville FL, US
Paul Louis Carpinone - Tampa FL, US
Kathryn Ann Finton - Seattle WA, US
Gary Wayne Scheiffele - Gainesville FL, US

International Classification:

G01J 3/44
B05D 3/00
B05D 3/06
B29C 43/02

US Classification:

356301, 427331, 427535, 264109

Abstract:

In accordance with the invention there are systems and methods of preparing surface enhanced Raman spectroscopy substrate and methods of enhanced detection of an analyte.

US Patent:

20160039673, Feb 11, 2016

Filed:

Feb 6, 2014

Appl. No.:

14/766157

Inventors:

- Gainesville FL, US
JIAQING ZHOU - WAYCROSS GA, US
PARVESH SHARMA - GAINESVILLE FL, US
SPYROS A. SVORONOS - GAINESVILLE FL, US
BRIJ M. MOUDGIL - GAINESVILLE FL, US
GARY WAYNE SCHEIFFELE - GAINESVILLE FL, US
AJOY K. SAHA - KOLKATA, IN

International Classification:

C01B 19/00
C22B 3/00
H01B 1/02
B22F 9/24
B01J 19/00
C01B 33/12

Abstract:

A continuous reaction system (CRS) allows a method to prepare quantum dots (QDs) in a continuous manner with high precision. The CRS pumps a plurality of reagent fluids into one or more mixing sites to form a reaction fluid that is carried through a heating chamber at elevated pressures to carry out hydrothermal growth of the QDs. The pumps and heating chamber are controlled with a high precision by employing a detector downstream of the heating chamber to provide a signal that is dependent on the composition and size of the QDs. The signal is provided to a signal processor that provides a signal that control the flow rates and temperature parameters in the system. The QDs produced in this manner are consistent in size and composition and can be of a single semiconductor composition or can be core-shell QDs with a shell semiconductor formed on a core semiconductor.