Upcoming seminars

Seminars at DIFFER cover a wide range of topics and are held on Thursdays at 11.15 AM in the seminar room of the institute (unless otherwise stated). Seminars are open to everybody. If you are interested in visiting a DIFFER seminar or want to subscribe to our mailing list, please follow the instructions for external visitors.

List all past seminars organized at DIFFER

Ute Ebert
June 1st 2017
11:00 to 12:00
(Please note the deviating time) Pulsed discharges play a key role not only in various lightning phenomena, but also in energy efficient plasma processing, plasma horticulture, plasma medicine and in high voltage technology where the replacement of the extreme green house gas SF6 is an urgent issue. I will identify the common ground of these phenomena, sketch briefly the experimental access and then elaborate on the inherently multiscale processes in space and time. I will end with discussing methods and surprising results of our fully three-dimensional discharge simulations with adaptive mesh refinement.
Gerard van Rooij
June 8th 2017
11:15 to 12:15
Abstract will follow soon
Petra de Jongh
June 15th 2017
11:15 to 12:15
Many decades of research in heterogeneous catalysis have yielded a wealth of knowledge on how to prepare metal nanoparticles in mesoporous carbon and oxide supports [1]. However, it is seldomly realised that this knowledge might be extremely useful also for the development of new materials for energy storage and conversion, such as in batteries, supercapacitors, fuel cells, gas storage materials and solar fuels materials. Vice versa the search for new energy storage and conversion materials might inspire unorthodox approaches to identify new, promising catalysts based on low-cost and earth abundant elements.   In my presentation I will highlight two examples. In the first case study I will discuss how industrial catalysts preparation techniques have led to the preparation of Cu2O photocatalysts for the production of renewable hydrogen[2].  In the second case I will show that supported light metal hydrides, NaAlH4 and LiNH2, originally studied for reversible hydrogen storage, show intriguing catalytic properties[3,4].   [1] P. Munnik et al. Chem. Rev. 115 (2015), 6687; [2] G. Wang et al. Appl. Catal. B, 192 (2016), 199. [3] P.L. Bramwell et al. J. Catal. 344 (2016), 129; [4] P.L. Bramwell et al., J. Phys. Chem. C. 120 (2016), 27212. 
Reinoud Lavrijsen
June 29th 2017
11:15 to 12:15
In this talk I will give an overview of my work on ultra-thin magnetic films (<1 nm) and hope to convey my excitement of the incredibly rich physics playground it offers. For instance; the recent observation that relativistic effects, initially considered useless/undetectable, have huge (unexpected) impact on magnetic nanotechnology. After a review of the basics of magnetism and thin film engineering I will show that this is not an obscure field and the basic technology is already widely integrated in your standard day. This will be the starting point of our recent discoveries and how we at the group physics of nanostructures contribute to the fundamental understanding using an experimental physics approach. Especially, our recent participation in the NWO-Gravitation project where we try to integrate magnetic racetrack memories into photonic circuits will be discussed. In the process I will detail our recent NanoAccess lab, a state-of-the-art UHV thin film deposition, analysis and manipulation facility open for collaborative projects as already undertaken with DIFFER.
Thomas Morgan
July 13th 2017
11:15 to 12:15
For DEMO liquid metal plasma facing components are considered due to their resilience to erosion through flowed replacement, potential for cooling beyond conduction and inherent immunity to many of the issues of neutron loading compared to solid materials. The development curve of liquid metals is behind that of e.g. tungsten however and tokamak-based research is currently somewhat limited in scope. Therefore investigation in linear plasma devices can provide faster progress under controlled and well-diagnosed conditions in assessing many of the issues surrounding the use of liquid metals. The linear plasma devices Magnum-PSI and Pilot-PSI are capable of producing DEMO relevant plasma fluxes which well replicate expected divertor conditions, enabling the exploration of physics issues such as vapour-shielding by liquid metals, convective flow and overall power handing. This talk will give an overview of liquid metal research recently carried out in these devices.