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SUMMARY:Microfluidic-Based Nanocrystal Synthesis—Towards Ultra-Fast Para
 metric Space Mapping
DTSTART:20181105T131500
DTEND:20181105T141500
DTSTAMP:20260408T134320Z
UID:3660291d34a83ffefc24e18066edf8b3147152926160772fbc5cf44f
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Andrew de Mello\, ETH Zurich Switzerland\nRecent years h
 ave seen considerable progress in the development of microfluidic systems 
 for use in the chemical and biological sciences. At a primary level\, inte
 rest in such systems has been stimulated by the fact that physical process
 es can be more easily controlled and harnessed when instrumental dimension
 s are reduced to the micron scale. For example\, it is well recognized tha
 t when compared to macroscale instruments\, microfluidic systems engender 
 a number of distinct advantages with respect to speed\, analytical through
 put\, reagent usage\, process control and operational/configurational flex
 ibility. Put simply\, microfluidic systems define new operational paradigm
 s and provide predictions about how molecular synthesis and analysis might
  be revolutionized.\n \nNanomaterials exhibit optical and electronic prop
 erties that depend on their size and shape\, and are seen as tailored prec
 ursors for functional materials. These critical dependencies indicate that
  ‘bottom-up’ approaches for nanomaterial synthesis must provide for fi
 ne control of the physical dimensions of the final product. Synthetic rout
 es have attracted significant interest owing to their versatility and ease
  of use\, but for most applications deviations about the mean particle dia
 meter must be <1%. This is beyond the tolerance of standard macroscale syn
 theses\, and it is almost always necessary to post-treat to extract the de
 sired particle size. Conversely\, microfluidic systems provide an ideal me
 dium for nanoparticle production. Since both mass and thermal transfer are
  rapid\, temperatures may be defined with precision and reagents rapidly m
 ixed to ensure homogeneous reaction environments. I will describe how we h
 ave utilized microfluidic reactors for highly efficient nanomaterial synth
 esis. This discussion will include autonomous ‘black-box’ systems for 
 the controlled synthesis of nanoparticles\, such as CdSe\, ZnS\, ZnSe and 
 CdSeTe. I will also discuss how droplets can be used for the synthesis of 
 high-quality Cesium Lead Halide Perovskite nanocrystals on short timescale
 s.\n \n1.   Nano Letters\, 2016\, 16\, 1869–1877.\n2.   Accounts of
  Chemical Research\, 2017\, 50\, 1248–1257.\n3.   Nano Letters 2018\, 
 18\, 1246−1252\n \n \nBio: Andrew deMello is currently Professor of Bi
 ochemical Engineering in the Department of Chemistry & Applied Biosciences
  at ETH Zürich. Prior to this\, he was Professor of Chemical Nanosciences
  and Head of the Nanostructured Materials and Devices Section in the Chemi
 stry Department at Imperial College London. He obtained a first-class degr
 ee in Chemistry and Ph.D. in Molecular Photophysics from Imperial College 
 London and subsequently held a Postdoctoral Fellowship in the Department o
 f Chemistry at the University of California\, Berkeley\, working with Prof
 essor Richard Mathies. His current research interests cover a broad range 
 of activities in the general area of microfluidics and nanoscale science.
LOCATION:MXF 1 https://plan.epfl.ch/?room==MXF%201
STATUS:CONFIRMED
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