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2018 Materials science lecture series: advanced materials - 12 November 2018

2018 Materials science lecture series: advanced materials - 12 November 2018
PRACTICAL

Nov 12, 2018 - 14.00 uur


Universiteit Hasselt

campus Diepenbeek

Agoralaan Gebouw D

3590 Diepenbeek

Lokaal Room C105


CONTACT

Mevrouw Aslihan BABAYIGIT

32-11-268825

aslihan.babayigit@uhasselt.be


MRS/E-MRS joint chapter of Hasselt University: 2018 materials science lecture series: advanced materials.

Speaker: Dr. Robert Hamers, Steenbock Professor of physical sciences, University of Wisconsin-Madison, USA

Topic:  Electron emission from diamond and from diamond-encapsulated naoonoparticle thin films

Chaired by: Prof. Dr. Ken Haenen, IMO-IMOMEC, Hasselt University

Monday 12 November 2018, 14:00 -15:00

Room C105, Building D, Hasselt University, Campus Diepenbeek.

Synopsis:

Diamond’s negative electron affinity allows us to be an unusually good  emitter of electrons when excited with above-bandgap light. While  these electron emissive properties have long been used in vacuum  applications, we have recently established that diamond can also be  used as a solid-state emitter of electrons into water and other liquids,  forming solvated electrons and other high-energy chemical species. The  efficiency of electron emission is limited by diamond’s weak  absorbance. In an effort to enhance electron emission, we have  incorporated silver nanoparticles into the diamond films by using  thermally induced de-wetting from continuous films, followed by  encapsulation by a second diamond layer. Here, I will discuss  diamond’s photo-excited electron emission into water and the  properties of diamond-encapsulated nanoparticle films.