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UID:0-5715@eng.ufl.edu
DTSTART;TZID=America/New_York:20230307T150000
DTEND;TZID=America/New_York:20230307T160000
DTSTAMP:20251201T205803Z
URL:https://www.eng.ufl.edu/news-events/events/mse-seminar-tuning-nanostru
 ctured-materials-for-combustion/
SUMMARY:MSE Seminar: "Tuning Nanostructured Materials for Combustion"
DESCRIPTION:Kerri-lee Chintersingh\, Ph.D.\nAssistant Professor\, Chemical 
 and Materials Engineering\nNew Jersey Institute of Technology\nDr. Kerri-l
 ee Chintersingh is an Assistant Professor within the Otto H. York Departme
 nt of Chemical and Materials Engineering at the New Jersey Institute of Te
 chnology. After completing her doctoral degree in Chemical Engineering at 
 NJIT\, Dr. Chintersingh joined the Hopkins Extreme Materials Institute and
  Department of Materials Science and Engineering at the Johns Hopkins Univ
 ersity (JHU) as a Postdoctoral Research Fellow in the Weihs group. She is 
 chemical engineering undergraduate alum of the University of Technology\, 
 Jamaica\, and has served as Process Control Engineer at a alumina refinery
 .\n\nCurrently\, her research focuses on tuning nanostructured metals\, al
 loys and composites as powders or varied architecture for combustion\, ene
 rgy\, and biomedical applications. She is also interested in utilizing mac
 hine learning to extract data from complex and extreme environments and to
  optimize reaction processes and material design. This effort has led to s
 everal peer- reviewed publications and multiple research awards. Outside o
 f research\, Dr. Chintersingh is a member of the Diversity\, Equity and In
 clusion Committee within her department and participates in outreach activ
 ities to stimulate STEM-based careers\, particularly in middle and high sc
 hool girls. She is also a member of the Society of Women Engineers and the
  American Institute of Chemical Engineers.\nAbstract\nMetals powders like 
 aluminum and boron are attractive potential fuel additives for pyrotechnic
 s\, propellants and explosives due to their high energy release upon oxida
 tion. However\, they tend to agglomerate\, have lengthy ignition delays\, 
 and low combustion rates/efficiencies. This study therefore aims to design
  and test metal powders with tuned microstructure or chemistries to mitiga
 te these challenges and favor the formation of desired products\; without 
 jeopardizing thermochemical performance\, safety\, and stability.\n\nOne a
 pproach used is to incorporate elements that can form exothermic intermeta
 llics (like Zr for Al). Ball-milling these elements form nanocomposite pow
 ders with lower ignition thresholds\, improved combustion efficiencies and
  lead to dual- phase combustion. Novel experimental and diagnostic tools l
 ike x-ray phase contrast imaging (XPCI) and snapshot hyper-spectral imager
  for emissions and reactions (SHEAR) have been coupled to capture condense
 d phase/internal particle features and external optical emissions\, temper
 atures\, and gas phase species\, respectively.\n\nMachine learning is used
  to obtain quantitative data: identify trends\, detect anomalies and class
 ify particle events from the videos produced of combustion scenes. Other a
 pproaches for tuning metals include modifying boron particle surface by wa
 shing with hydrocarbon solvents or introducing transition metals like Fe a
 s an oxygen “shuttle catalysts” to accelerate boron’s heterogeneous 
 surface reactions. Results show that washing boron reduces ignition delays
  by reducing the oxide layer present and doping boron with as low as 1wt% 
 Fe improves surface reaction rates.
CATEGORIES:Seminars
LOCATION:Rhines Hall Room 125\, 549 Gale Lemerand Drive\, Gainesville\, FL\
 , 32611\, United States
GEO:29.644403;-82.350403
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=549 Gale Lemerand Drive\, G
 ainesville\, FL\, 32611\, United States;X-APPLE-RADIUS=100;X-TITLE=Rhines 
 Hall Room 125:geo:29.644403,-82.350403
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