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SUMMARY:Plasmonic Magnesium Nanoparticles - Emilie Ringe (University of Ca
 mbridge)
DTSTART:20200825T094000Z
DTEND:20200825T100000Z
UID:TALK150451@talks.cam.ac.uk
CONTACT:Joseph Nelson
DESCRIPTION:Localized surface plasmon resonances have attracted much atten
 tion due to their ability to enhance light-matter interactions and manipul
 ate light at the sub-wavelength level. Recently\, alternatives to the rare
  and expensive noble metals Ag and Au have been sought for more sustainabl
 e and large-scale plasmonic utilization. Mg supports plasmon resonances\, 
 is one of the most abundant elements in earth’s crust\, and is fully bio
 compatible\, making it an attractive framework for plasmonics.\n\nThis tal
 k first discusses the hexagonal\, folded\, and kite-like shapes we modelle
 d using Crystal Creator\, our Wulff-based shape generation code for twinne
 d nanoparticles. Nanoparticles found in colloidal syntheses are then prese
 nted and match well with predictions. Then\, the optical response of Mg na
 noparticles is overviewed\, highlighting Mg’s ability to sustain localiz
 ed surface plasmon resonances across the ultraviolet\, visible\, and near-
 infrared electromagnetic ranges. The various resonant modes of hexagons\, 
 leading to the highly localized electric field characteristic of plasmonic
  behavior\, are presented numerically and experimentally. The evolution of
  these modes and associated field from hexagons to the lower symmetry fold
 ed structures is then probed\, again by matching simulations\, optical\, a
 nd electron spectroscopy data. Lastly\, results demonstrating the opportun
 ities and challenges related to the high chemical reactivity of Mg are dis
 cussed\, including surface oxide formation and galvanic replacement as a s
 ynthetic tool for bimetallics. \n\n*This talk will be held online using Zo
 om. Please "register your email address here":https://forms.gle/9Rpf2Bekoc
 wLpmHD9 to receive Zoom links via email.*\n\n*Workshop website*: https://w
 ww.mtg.msm.cam.ac.uk/events/msm-aimr-joint-online-workshop-2020
LOCATION:Online - Zoom
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