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X-WR-CALNAME:P&A Colloquium: Vinh Nguyen\, "Diffractive Optics for Focusing
  and Imaging on Flexible Materials"
X-WR-TIMEZONE:Eastern Time (US & Canada)
BEGIN:VEVENT
DTSTAMP:20260819T095241Z
UID:tag:localist.com\,2008:EventInstance_48676909919684
DTSTART:20250219T193000Z
DTEND:20250219T202000Z
DESCRIPTION:Join the Department of Physics and Astronomy on Wednesday\, Feb
 ruary 19 at 2:30pm in White Hall G09 for a colloquium presented by Vinh Ng
 uyen (Virginia Tech). The title of the talk is\, "Diffractive Optics for F
 ocusing and Imaging on Flexible Materials."  A reception will precede the 
 colloquium at 2:00pm in White Hall 105/111.\n\n \n\nAbstract\n\nThe emerge
 nce of planar meta-lenses on flexible materials has profoundly impacted th
 e long-standing perception of diffractive optics. Despite their advantages
 \, these lenses still face challenges in design and fabrication to obtain 
 high focusing efficiency and resolving power. A nanofabrication technique 
 combining photolithography and polyimide casting is demonstrated for creat
 ing membrane-based\, multilevel phase-type Fresnel zone plates\, photon-si
 eves\, and meta-surfaces with high focusing efficiency. By employing these
  advantageous techniques\, these lenses with nanostructures are directly p
 atterned into thin polyimide membranes. The potential impact of these lens
 es extends across various applications including microscopy\, imaging\, mi
 cro-diffraction\, remote sensing\, and space flight instruments which requ
 ire lightweight and flexible configurations. I will review recent advancem
 ents in diffractive optics for focusing and imaging\, highlighting how fla
 t optics could revolutionize lens manufacturing\, adapting planar technolo
 gies used for computer chip production to create CMOS-compatible diffracti
 ve optical components.\n\n \n\nBiography\n\nVinh Nguyen received his M.Sc.
  degree in physics from the Institute of Physics\, Hanoi\, Vietnam\, in 19
 99 and his PhD in experimental physics from the University of Amsterdam\, 
 The Netherlands\, in 2004.\n\nHe then joined the faculty of the Physics De
 partment at Virginia Tech. Previously. He was a research scientist at the 
 Institute for Terahertz Science and Technology\, University of California\
 , Santa Barbara\, and a senior United Kingdom Facility Scientist at the Du
 tch Free-Electron Laser for Infrared Experiment (FELIX)\, in The Netherlan
 ds.\n\nHis research interests include optoelectronic materials for optical
  interconnect\; terahertz coherent control for quantum information process
 ing\; ultra-fast dynamics of intersubband transitions in quantum systems\;
  diffractive optics\; dynamics of hydration shell and biomolecules/ions in
  liquid water by the terahertz spectroscopy for its biological functions.
GEO:39.632955;-79.954715
LOCATION:White Hall\, G09
SUMMARY:P&A Colloquium: Vinh Nguyen\, "Diffractive Optics for Focusing and 
 Imaging on Flexible Materials"
URL;VALUE=URI:https://cal.wvu.edu/event/pa-colloquium-vinh-nguyen-diffracti
 ve-optics-for-focusing-and-imaging-on-flexible-materials
CATEGORIES:Meetings and Conferences
CATEGORIES:Presentations
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